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FishSAFE Website Terms and Conditions

Terms and Conditions - FishSafe Website This website, www.fishsafe.org and any associated sites, ("the Site") is provided to you ("you" meaning any person, firm, partnership, corporate body or any other legal person accessing or otherwise using, or benefitting from the use of, this Site) by FLTC Services Limited, a company incorporated under the Companies Acts (Registered No. SC348751) and havin...

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FishSAFE Unit Terms and Conditions

Terms and Conditions of Supply, Use and Maintenance of the FishSAFE Unit and Related Database Introduction These are the Terms and Conditions which govern the supply, use and maintenance of FishSAFE Units and the initial provision of (and subsequent updating of) the Data and Database associated with such Units.  We are FLTC Services Limited ("FLTCS") a not-for-profit organisation incorporated u...

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Terms & Conditions

Please select from the two choices below, to either read the terms and conditions for the FishSafe website or the FishSafe alarm unit: FishSafe Website FishSafe Alarm Unit  

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Useful Links

Oil & Gas UK Ltd               FLTC Services Limited               Scottish Fishermen's Federation               National Federation of Fishermen's Organisation               Kingfisher Information Services  

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Funding

Fishing Safely in Changing European Waters 2016-2019 Provision of FishSAFE Information, the Kingisher Fortnightly Bulletin and the Yellow Card, development of new terminology and symbology for oil and gas hazards during and after decommissioning and provision of enhanced images of such hazards form part of the project. It incorporates a review of criteria to include a pipeline span in Fish...

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Feedback

If you have some feedback to offer, or have a question you would like to ask, please complete the form below and we will contact you as soon as possible.

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About Us

The FishSAFE web site has been developed by FLTC Services Limited ("FLTCS") to promote fishermen's awareness of offshore surface and subsea structures within the UK Continental Shelf. FLTCS was formed to promote or supply information systems and devices which enhance safety in connection with oil and gas infrastructure in UK Waters. The parent company of FLTCS was formed by Oil and Gas UK, the ...

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Repair and Maintenance Procedure

If you have any issues with your FishSAFE unit relating to repairs or maintenance, please follow the procedures outlined below. Repairs during Warranty Period of Three Years A repair service is available to remedy any defect which may arise through ordinary use of the unit within three years from the date on which the units were delivered to FLTC Services Limited by the manufacturer. This ap...

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Data Updates

The update process differs depending which FishSAFE Unit you have installed on your vessel. For FishSAFE version 2 units (available from 2009-2019)  Please download the latest file from the download page, unzip and copy the *.dat file to an SD card before inserting into your FishSAFE unit   For FishSAFE version 3 units (available from summer 2020 - )  Providing your unit ...

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Use of the FishSAFE Unit

Please click here for the FishSAFE Unit Operation Manual (Opens in PDF Format). Within this document, there is information relating to: Installation FishSAFE overview Operating procedures Visual and audible alarms Updating the unit Unit repairs For information relating to the prcedure for any repair and maintenance of the FishSAFE unit, pl...

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How to buy a FishSAFE Unit

How to purchase a FishSAFE Unit Please click here to download the FishSAFE Unit Purchase Order Form. This Order Form is in Adobe PDF format. Print off the downloaded form and complete the details where requested. You can email the form to us at accounts@sff.co.uk or post the form to FLTC Services Limited, 24 Rubislaw Terrace, Aberdeen AB10 1XE. Once we receive the form and accept y...

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Latest FishSAFE News

FLTC Services Limited (FLTCS) is pleased to announce that the upgraded FishSAFE units (Mark 3) are hoped to be available later this year. This unit incorporates innovative features such as a touch screen, tracker ball facility and updating and messaging online among others. It has already proved popular in sea trials with skippers appreciating its benefits compared with previous versions. Grant...

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Glossary

Abandon To cease work on a well which is non-productive, to plug off the well with cement plugs and salvage all recoverable equipment . Also used in the context of field abandonment. Appraisal Well A well drilled as part of an appraisal drilling programme which is carried out to determine the physical extent, reserves and likely production rate of a field. Associated Gas Natural...

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Seismic Surveys

Seismic surveys are carried out extensively in the North Sea to search for potential reserves of oil and gas in the subsea rock formations. Large seismic survey vessels are used to tow steamers suspended below the surface which carry hydrophones. Sound waves are transmitted from the vessel using compressed air guns which travel down through the seabed and reflect back from the different layers of...

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Moorings

Offshore mooring buoys are commonly used on the UK Continental Shelf. A Single Point Mooring buoy (SPM) as seen on the right, is used by a shuttle tanker to secure to during loading/unloading operations. The buoy is attached to the subsea facility by flexible risers and is held in place by anchors and should be given a wide berth at all times. The images below show different moori...

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Pipelines

As stated on admiralty charts "Mariners are advised not to anchor or trawl in the vicinity of pipelines". The note goes on to say that damage to oil or gas pipelines could cause your vessel to lose buoyancy through escaping gas. Seabed conditions such as sand waves can create spans on pipelines which fishing gear can become snagged under and put your vessel in severe danger. Pipelines are used ...

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Subsea Templates & Manifolds

Templates A subsea template is a large steel structure which is used as a base for various subsea structures such as wells and subsea trees and manifolds. The image below shows a number of wellheads on a subsea template: The wellheads can be seen with their guidebases (4 x white rods) pertruding from each corner, which are used to locate other equipment, i.e. trees. The size of a templ...

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Surface Structures

Platforms, FPSOs, Drilling and Semi Submersible Rigs Alwyn North Platform FPSO whist off-loading Jack Up Drilling Rig Semi Submersible Drilling Rig   Platforms Most production platforms are placed directly above the wells from which they are extracting oil or gas. The visible topsides a...

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Contact us

The FishSAFE website is managed by Kingfisher Information Services on behalf of FLTC Services Limited. If you have a query, comment, or suggestion in relation to this website or the FishSAFE Unit, please contact Kingfisher or complete the form within the Feedback section of this website.   Kingfisher contact details: Kingfisher Information Services Sea Fish Industry Authority ...

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FishSafe Unit

Product Information For 10 years the original FishSAFE unit has been protecting fishing boat skippers in the North Sea, warning them of approaching hazards and clearly displaying where surface and subsea structures are located. The new and much improved FishSAFE unit is now available for supply. With many components of the original FishSAFE now becoming obsolete, FLTC Services Limited ha...

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Subsea Trees

Subsea trees are structures attached to the top of subsea wells to control the flow of oil / gas to or from a well. When attached to a subsea well the combined structures can extend to 7 metres above the seabed in height. They are made up of pipework and valves within a supporting steel framework and present a substantial hazard to towed fishing gear. When several subsea trees and asso...

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Subsea Wellheads

Production Wells When a well is drilled the structure placed on the seabed is called a wellhead. There may be a single wellhead, though often there may be several units grouped together to form a block. Attached to the top of the wellhead are the control units called subsea trees. The wellhead assembly is usually contained within a supporting structure called a template, with many...

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Subsea Structures

Subsea Structures The recovery of oil and gas from the subsea environment involves the use of many  seabed structures. These seabed structures present snagging dangers to the fishing community. Many subsea structures are protected by safety zones, though others do not have the benefit of safety zones and therefore, it is vital that their positions are known. The positions of all subsea st...

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Offshore Structures

There are many different types of structures associated with the offshore oil and gas industry on the UK Continental Shelf. Oil platforms and drilling rigs are easily visible but below the surface there are many more structures which if not avoided may become serious hazards to fishing operations.

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Subsea Safety Zones

Not all structures associated with the offshore oil and gas industry indicate their presence at the surface. For those subsea structures requiring a safety zone, a Statutory Instrument (S.I.) will be created to offer protection to / from other users of the sea. Subsea structures form a major part of the offshore oil and gas infrastructure on the UK Continental Shelf. These structures c...

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Surface Safety Zones

Offshore operators are keen to get the message across to fishermen working in and around offshore installations that safety zones are present for the protection of all parties and they must not be entered at anytime during fishing operations.

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Safety Zones

UK Continental Shelf Safety Zones Offshore operators are becoming increasingly concerned for the safety of their assets and the fishermen working around them. Recently there have been many incidents where fishing vessels have entered safety zones whilst carrying out fishing operations and several of these incidents have resulted in serious damage to subsea equipment and more seriously have put at...

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News

Hazard - Block (T22-0521) at Curlew D safety zone

During debris recovery, a large block was observed by the ROV. Large block with dimensions of 4.0m x 2.2m x 0.5m found in position 

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Hazard - Boulder (T22-0938) North of Fulmar

During debris recovery, a large boulder was observed by the ROV. Boulder dimension 3.0m x.1.6m x 0.6m.

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Geophysical survey - Morven offshore wind farm

A geophysical survey of the proposed Morven Offshore Wind Farm Project will commence on the 11th April 2022 for approximately 3-4 months. The survey involves the use of 2DUHR equipment, Multibeam Echosounder, Sidescan Sonar and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel. There will also be drop-down camera, grab samples, Cone Penetration Tests and boreholes undertaken.

A geophysical survey of the proposed Morven Offshore Wind Farm Project will commence on the 11.04.22 for approximately 3-4 months. The survey involves the use of 2DUHR equipment, Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel. Drop-down camera and grab samples will be collected at approximately 86 locations during the survey, the timing of which is not yet confirmed; Cone Penetration Tests (CPTs) will be undertaken at approximately 150 locations during August; approximately 15 boreholes will be undertaken during September/October.

 

All vessels are requested to maintain a safe distance (500 m) from the survey vessel Ocean Geograph at all times. Vessels will display appropriate shapes and lights when surveying.

 

An Offshore Fisheries Liaison Officer (OFLO) will be present aboard the survey vessel – see details below.

 

Any at sea, operational issues should be directed towards the OFLO in the first instance.

 

More general queries about the survey and/or proposed Project can be directed towards the Company Fisheries Liaison Officer (CFLO) – see details below.

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Ensco 92 move to North West Bell Well

Chrysaor (a Harbour Energy company) plan to move the Ensco 92 Jack-up drilling rig to the North West Bell field location to perform abandonment operations on the North West Bell 49/22-20Y development well. Throughout well abandonment operations there will be a dedicated ERRV on location monitoring the surrounding sea area.

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Cable HDD Punchout Works - Mercator Subsea Telecommunication Cable

Planned works for punchout work and buoy installation at Joss Bay, United Kingdom. The purpose of the works is to locate the Horizontal Directional Drilling head for the Mercator Subsea Telecommunications Cable shore landing. Once the HDD penetrates the surface of the seabed (i.e., breaks out) divers will enter the water and cut the HDD tube below the seabed surface.

They will fit it with a protected seal and attach a submerged marker buoy on clump weight so that the end can be found prior to cable installation. The end will be buried to remove the potential for navigational risk or snagging of fishing gear.

 

Briggs Marine will be undertaking the work with their work boat the Forth Drummer call Sign:2fig9. The works will incorporate 4 anchor buoys for the duration of the HDD works.

 

These will be lit whilst in use and removed once the works are complete.

  • The buoy will be installed at location 51° 23.1876’N, 1°28.5002’E
  • Installation start date is 10/07/2022 and is expected to last 2 weeks.
  • The submerged marker buoy shall remain on location on seabed until the main cable lay can begin. Current start date for the main lay is summer 2023.
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Decommissioning - Amethyst A2D

Please be advised that decommissioning activity will be taking place on the Amethyst A2D. Arrival and siting of jack up barge alongside the platform for rendering the platform hydrocarbon free in preparation for the removal of the platform. Earliest Start date 10th July 2022 estimated completion 22nd September 2022.

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Platform Removal Operations - Murdoch

During the 2022 summer season the Murdoch Platform complex shall be removed. The Murdoch complex consists of three bridge linked platforms, as depicted below and is surrounded by a statutory 500m safety exclusion zone. Infield operations shall remain ongoing for a period of ~30 days, commencing in field from ~1st July 2022

Heerema Marine Contractors shall utilise the Heavy Lift Vessel Sleipnir to remove the facilities. Offshore operations
shall be supported by three flat top barges and associated towing vessels. All structures shall be transported to the
disposal yard located at ABLE UK, Teesside.

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CPS Sensor Removal - Galloper Windfarm

Please be advised Diving, Survey & Marine Contracting UK (DSMC) will be conducting ROV operations for the removal of two CPS sensors from array cables on the North Field of Galloper Windfarm. The works are schedule to commence on 6th July for an approximate duration of 7-10 days using vessel Mareel Turquoise call Sign: 2GCR8, dependent on weather delays.

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Survey - Leverett Field (Ref: 1422)

A 15 Day Site Survey at the Leverett Field using vessel Ocean Reliance call sign: HP6391 between 25th July 2022 - 30th October 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Gardline

Ocean Reliance

HP6391

N/A

25/07/2022 - 30/10/2022

For 15 Days

21

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NUI NavAid Installation - Brent Charlie

Commencing August 2022 - a new NUI (normally unmanned installation) NavAid system will be installed on the Brent Charlie Oil and Gas Installation

Brent Charlie is a manned production platform which served the Brent and Penguins reservoirs. The installation has now entered the Cessation of Production (CoP) phase and is due to down staff in late 2022. From August 2022 a NUI NavAid lighting system will be in operation, through to mid-2023. The specification of the system is as follows:-

 

Two off main white lanterns with a minimum range of 10NM to be mounted in the north-east and south-west corners of the platform. Both lanterns will be synchronised and exhibit flashing a Morse ‘U’ character every 15 seconds. A photocell shall be provided to ensure the lanterns operate within the required period of 15 minutes before sunset to sunrise and whenever visibility is below 2NM. Each lantern shall have a backup in case of failure of the main lantern. The main white lanterns shall have an IALA Category 1 availability factor (99.8%).

 

It is proposed that that the installation and subsequent commissioning of the new NUI NavAid lighting system will commence around the 8th August 2022. Once successful commissioning has been executed, it the existing lighting as detailed in the CtL permit (CL/110/6 V1) will be switched off permanently. This will effectively mean that only the NUI NavAid lighting will be in operation from August 2022 (install date) to the date of topsides lift (mid 2023). Should a fault occur with the new NUI  NavAid lighting system, the existing system will be reenergised until such time as the new NUI NavAid is repaired and is back in service. The current foghorn capability as detailed in CL/110/6 V1 will be retained until down staff in December 2022 (current date). Foghorns will be switched off at down staff (there will be no power generation capability available after down staff).  

 

Further notifications as required by CL/110/7 V2 will be submitted in due course.

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Offshore Sub-station Hook Up & Commissioning Activity - Seagreen Offshore Windfarm Rev2

Commissioning activities will continue at the Seagreen Offshore Wind Farm Sub-Station platform. The Borr Ran jack up barge will depart the Seagreen site on the 9th of July.

On behalf of Seagreen Wind Energy Ltd, Petrofac will commission the Seagreen offshore sub-station platform.

The Jack Up Barge Borr Ran will depart the Seagreen site on the 9th of July. The Borr Ran will be assisted in departing the site by three tugs, details below.

 

- Pacific Discovery

- Bugsier 2

- Multratug 19

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Rig - Valaris Norway

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Well-Safe Guardian

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Transocean Endurance

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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2022 Inspection Campaign - North Sea

Atlantis Dweller (Call Sign C6DX6) will be carrying out Subsea Asset Inspection work both within and between (along pipeline routes) the locations noted below: Start Date = around 8th August 2022. Duration expected to be approx. 40 Days

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Underwater Noise Monitoring Survey Notification - Rampion 2

Please be advised that from the 4th July 2022, GoBe Consultants will be deploying underwater noise monitoring equipment at the two locations off the Sussex Coast. The equipment will comprise of a static hydrophone monitoring system with sub-surface riser and pick-up buoys. The total height of the single line deployment will be approximately 9m with the height of the hydrophone above the sea floor at approximately 2m.

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Rig - Valaris 120

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.

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Scottish Hydro Electric Power Distribution (SHEPD) Marine & Freshwater Subsea Inspections – 2022

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea and freshwater inspections of several cables within a defined corridor.

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea and freshwater inspections of several cables within a defined corridor.

 

Given the different conditions and water depths anticipated at each site, a range of vessels will be utilized across the project. The inspection works will be centered on a 50m cable corridor.

 

Survey operations at these locations are expected to commence in June 2022, with start dates and anticipated durations given in the attached NtM.

 

VESSEL DETAILS

All vessels to be used during the survey and inspection campaign are owned and operated by Aspect Land & Hydrographic Surveys Ltd. Operations will be limited to daylight hours only.

The vessels conducting these inspections will be restricted in their its ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (COLREGs Rule 16 & 18) during marine operations.

All vessels will monitor VHF Channel 16 throughout survey operations. Mobile contacts for the vessels are listed at the end of the attached NtM.

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Survey - North Haven, Fair Isle; Grutness, Shetland

A 2 day ecological survey within North Haven Harbour, Fair Isle and Grutness Harbour, Shetland between 11 July 2022-17 July 2022.

Please be advised that ABPmer will be conducting survey operations during week commencing Monday 11th July. Ecological survey work, consisting of grab and drop-down video monitoring, will be undertaken across two days within that period, one day at each site. Survey operations will be conducted using the 'Ruby May'.

 

 

Survey Vessel

Ruby May

MMSI: 235078698

Call Sign: 2DGG5

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Geophysical and Environmental Survey - Salamander Offshore WindFarm

Salamander Offshore Wind Farm Geophysical and Environmental Survey window will commence 26th July earliest and run until the 30th September 2022 latest (including potential for weather delays/downtime). Area includes 2km turning buffer for the survey vessel in the offshore and 500m turning buffer in the nearshore.

Salamander plan on undertaking geophysical survey and benthic drop-down video and grab survey activities. The survey window will commence on or around 1st July 2022 and, following a phased approach, is expected to take up to 42 days to complete to account for operational and weather delays. The anticipated survey window will run to 30th September 2022.

 

This survey will also aim to provide the necessary data to feed into the Environmental Impact Assessment (EIA) process. The Geophysical Survey will include Multibeam Echosounder (MBES), Acoustic MBES Backscatter (ABS), Side Scan Sonar (SSS), Magnetometer (MAG) and High Frequency Sub-Bottom Profiler (SBP) data at Windfarm Array Area (WAA) and Export Cable Route (ECR) locations. A coarse grid (1000 m x 1000 m line spacing) of Low Frequency SBP is also to be run at the WAA area and along the centreline of the ECR.

 

The geophysical scope of work will be divided in 3 main areas:

  • Offshore windfarm array area
  • Offshore section of export cable route
  • Nearshore section of export cable route

Water quality sampling will be required from the 8 m water depth contour up to the first 3 nm (from the shore) of the proposed ECR.

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Elgin-Franklin GWA Surveys

PGS Ramform Atlas (Call Sign C6AX2) will be carrying out Streamer 4D Seismic Survey work between the locations noted below: The Vessel will be towing 15 x 5000m streamers and will have limited manoeuvrability; please keep 3Nm minimum CPA. Seismic Source Volume = 3150cu.in source at 2000 psi operating pressure. Start Date = around 1st August 2022. Duration expected to be approx. 2 months to end-September

PGS Ramform Atlas (Call Sign C6AX2) will be carrying out Streamer 4D Seismic Survey work between the locations noted below:

The Vessel will be towing 15 x 5000m streamers and will have limited manoeuvrability; please keep 3Nm minimum CPA.

Seismic Source Volume = 3150cu.in source at 2000 psi operating pressure.

Start Date = around 1st August 2022.  Duration expected to be approx. 2 months to end-September

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Survey - Teal West Field

Survey activity on the Teal West Field in the UKCS. The MV GeoOcean V will be mobilising to the field to acquire Multibeam bathymetric data, single channel sub-bottom profiler data and 2D high-resolution seismic data (as a single-pass operation).   The vessel is due to arrive in the field 6th July. 

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New Safety Zone: Tolmount East Drill Centre, Tolmount East, Block 42/28d

A new safety zone has been granted by the Secretary of State for the above location/structure. For installations already on location the safety zone will come into force on 20th July 2022. Installation NOT Stationed at the time this order is made.

may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

 

Your FishSAFE Information will be updated in the next release v44

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New Safety Zone: Manifold M12, Foinaven, Block 204/24a

A new safety zone has been granted by the Secretary of State for the above location/structure. For installations already on location the safety zone will come into force on 20th July 2022. Installation Stationed at the time this order is made.

This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

 

Your FishSAFE Information will be updated in the next release v44

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R100 Seg 2.04 Fair Isle Branching Unit Telecom Cable

Please be advised that the R100 Seg 2.04 Fair Isle to BU telecommunication cable has been wet stored telecommunication cable (20m radius from buoy) and can be identified as a BLACK ROMAR surface buoy (reflective tape applied). This buoy is situated approx. 3.4km ESE from Fair Isle. This buoy's removal will depend on the weather; however, it will likely be removed within 1-2 weeks. Vessels should maintain a distance of at least ¼ NM from the deployed cable.

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ROV Inspection of Pipelines - Langeled

Remote operated vehicle inspection of pipeline sections on UKCS. Inspection of pipeline sections by Remote Operated Vehicle (ROV) deployed from survey vessel Edda Flora (including camera and multibeam sensor): Edda Flora call sign - LAJW3 from 29th June 2022 until 18th July 2022

Inspection of pipeline sections by Remote Operated Vehicle (ROV) deployed from survey vessel Edda Flora (including camera and multibeam sensor):

 

Edda Flora call sign - LAJW3

  • Martin Linge section - planned for 29th June - *completed*
  • Utsira High section - planned for 29th June - *completed*
  • Vesterled section - planed for 30th June - *completed*
  • Langeled section - planned commencement 7th July
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Bathymetric Survey - Morven Offshore Wind Farm

A bathymetric survey of the proposed Morven Offshore Wind Farm Project will commence on the 24th June 2022 for approximately 4 weeks. The survey involves the operation of up to 3 Uncrewed Surface Vessel (USV) equipped with Multibeam Echosounders.

A bathymetric survey of the proposed Morven Offshore Wind Farm Project will commence on the 24th June 2022 for approximately 4 weeks. The survey involves the operation of up to 3 Uncrewed Surface Vessel (USV) equipped with Multibeam Echosounders.

 

All vessels are requested to maintain a safe distance (1nm) from the USV's (X09, X11 & X15) at all times. Vessels will display appropriate shapes and lights when surveying.

 

Although the vessel is uncrewed, it is managed throughout the 24 hour operation, piloted remotely using 360 degree cameras and other navigational aids. A support vessel will escort the USV from the active ports to clear water.

 

The USV's will be launched and recovered from the ports of Arbroath & Eyemouth.

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Well Abandonment - Ettrick E4

COSL Innovator abandoning Ettrick E4

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Mariner Field 4D Seismic Survey

Multi vessel 4D seismic survey of the Mariner Field area: Main survey vessel SW Amazon Warrior (call sign 3FNE9) will be supported by the SW Cook, Mainport Pine and Apollo Moon

4D Seismic survey of Mariner Field area using vessels listed below planned for commencement August 2022:

 

The towed array from the Amazon Warrior (diagram attached) will be up to 525m wide and extend up to 3600m from the stern of the vessel. The guard vessel Apollo Moon will support during the duration of the survey and issue warnings as required.

 

Vessel Name Call Sign IMO Purpose
SW Amazon Warrior 3FNE9 9662394 Main seismic vessel
SW Cook 5BPC2 9488554 Secondary seismic vessel / source vessel for undershooting
Mainport Pine V7ZH8 9659335 Supply vessel
Apollo Moon HP9796 9305829 Guard vessel

 

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Shetland HVDC Cable Lay Works Campaign 1

Scottish Hydro Electric Transmission Plc, are due to commence the installation of Campaign 1 of the Shetland HVDC Link cable. Campaign 1 begins at Noss Head, North of Wick and runs to until approximately KP155.

Planned Activities

 

The vessel, NKT Victoria, will be used to lay the cable on the seabed floor. Once the cable is laid on the seabed floor the vessel, Grand Canyon III, will be used to trench the cable to the required burial depth in the seabed. Any sections along the cable route that cannot be trenched, rock placement will be undertaken to achieve the required protection. The rock placement works will be completed in two campaigns. All works will be continuous, 24 hours a day.

 

Within the Noss Head Marine Protected Area the cable will be surface laid and protected by a cable protection system.

 

In the period between cable lay and cable burial, or protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention. For this reason, the cable corridor will remain closed for any fishing that interacts with the seabed, anchoring or use of other equipment with seabed intervention.

 

Please be aware that vessels NKT Victoria, Grand Canyon III and Grane R will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972). Masters of vessels are therefore requested to maintain their vessels at a minimum safe passing distance of 500 metres. NKT Victoria, Grand Canyon III and Grane R will display the appropriate shapes and lights in accordance with COLREGs Rules 16 and 18.

 

Co-ordinates of the cable corridor and charts of the working area are provided below. 

 

Guard Vessels

 

To protect the cable during installation activities Guard Vessels will be placed at approximately 15km intervals along the cable route. To provide the required coverage, approximately 7 guard vessels are expected to be utilised. The primary purpose of the Guard Vessels is to guard any unprotected cable along the cable route. The Guard Vessels will operate on a 24hr / 7 day per week basis. Any exchange of vessels shall be on site and coordinated so the unprotected cable is never unguarded.

 

It is requested that all vessels maintain a minimum of 500m safe distance from the installation vessels and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the cable corridor.

 

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Diving Operations in the Beryl Area

DSV Seven Kestrel will be carrying out diving operations in the Beryl Area from 15 July 2022 for 27 days. These operations will be within the Beryl Alpha platform 500m zone and Garten 500m zones.

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Geophysical Survey - Dogger Bank C Export Cable

The survey vessel, Northern Franklin, will conduct a geophysical Pre-lay survey along the Dogger Bank C export cable corridor in the Southern North Sea, between 9th March 2022 and approximately 1 Aug 2022. Survey operations will be continuous, 24 hours a day.

The works will contain both geophysical and seismic surveys, carried out using towed equipment. The towed streamer(s) is up to 320 m behind the vessel.  It is therefore requested that all vessels maintain a minimum 1800m separation distance from the survey vessel and pass at reduced speed.

 

A detailed survey will be carried out along several corridors within the survey area. The survey work will be hull mounted Multibeam sonar and subbottom profiler work, along with towed Side scan sonar and piggy backed magnetometer-up (tow max 320 m).

 

During operations the Northern Franklin will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

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Southwark to Thames Pipeline Installation Operations

IOG PLC have installed a 24 -inch diameter gas pipeline in the southern North Sea from the Southwark Gas Field to a tie-in point on the existing Thames pipeline. The trenching vessel is scheduled to bury the pipeline in mid-July. In the meantime the pipeline will remain surface laid.

The trenching Grand Canyon III will be on site from approximately 12th July to trench the pipeline into the seabed.  The operations are expected to take approximately 5 days to complete.

 

Call-sign : LACJ8

MMSI: 257 010 590

Length and Breadth : 128m x 25m

 

The vessel will have an ROV on the seabed which will restrict its ability to manoeuvre.  It is requested that all vessels operating within the area keep a safe distance (500m) and pass at reduced speed.

 

Operations will be conducted on a 24-hour basis.

 

PLEASE NOTE: Between the lay and the completion of the trenching activities the pipeline will be on the surface of the seabed and there is the potential for spans at any point along its length.  All vessels with interaction with the seabed are requested to keep clear until the completion of the trenching operations.

 

Throughout this period Safety Messages will be transmitted on ch16 by a vessel monitoring marine traffic in the vicinity.

 

The trenching operations are scheduled to be completed by 20th July but will be confirmed by the cancellation of this notice.

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Offshore Construction - Dogger Bank A Offshore Wind Farm

Offshore Construction of the Dogger Bank A Offshore Wind Farm commenced on the 18th of March 2022. The development of the windfarm is made up of several elements - current ongoing elements  are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.

The development of the windfarm is made up of several elements - current ongoing elements include:

 

Export Cable Burial

The trenching support vessel, Grand Canyon III, is currently conducting post-lay burial operations, including post-trench survey, on the Dogger Bank A export cable. The exact sequence of trenching and post trench survey will be subject to on-site conditions and operational planning, but in general is typically undertaken in 10-20 km blocks of alternating trenching followed by survey. 

 

Export Cable Guard Vessels

Guard vessels are deployed along the export cable route.

 

Scour Protection Installation

The fall pipe vessel Simon Stevin has completed the current scope of work to install scour protection at 95 monopiles foundations on Dogger Bank A and has now left site. The fall pipe vessel Fintstone will return to site at the end of July to complete the scour protection installation at the remaining locations

 

UXO Inspection Campaign

The Offshore Supply Vessel, KAMARA, will perform UXO Inspection operations within Dogger Bank A and Dogger Bank B Array construction areas

 

For further details of current offshore construction activities, please contact the people below or see attached Weekly Notice of Operations.

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Survey - Dogger Bank Easternmost Shoal S

Commencing from the start of April for a period of approximately five months, bathymetry survey operations will be undertaken in the Dogger Bank Easternmost Shoal S area using survey vessel 'Noortruck'.

A-2-Sea Solutions Ltd will be operating vessel 'Noortruck' on a 24-hour basis, sailing survey lines between 5-10 knots.

 

Equipment will not be towed and only a hull mounted multibeam echosounder will be used.

 

Vessel Noortruck will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Survey - Dogger Bight N

Commencing in August 2022 for approximately a period of two months , bathymetry survey operations will be undertaken in the Dogger Bight area using survey vessel 'Noortruck'. A-2-Sea Solutions Ltd will be operating vessel 'Noorttruck' on a 24-hour basis, sailing survey lines between 5-10 knots. Equipment will not be towed and only a hull mounted multibeam echosounder will be used. 'Noortruck' will exhibit the lights and shapes prescribed and will maintain a listening watch on VHF Channel 16.

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BP-7 spool and jumper installation - Western Isles South Drill Centre manifold

The new BP-7 wellhead will be tied in to the existing Western Isles South Drill Centre manifold with new flowlines and hydraulic/chemical electrical jumpers, which will be protected with new concrete mattresses and grout bags.

The tie-in work will be conducted by a DSV and divers. The flowlines and jumpers will be laid on the seabed and connected to the BP-7 tree and the South Drill Centre manifold. The new infrastructure will then be protected with new concrete mattresses and grout bags. The works will be entirely within the existing South Drill Centre 500 m safety exlcusion zone.

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Anasuria Field Pipeline works - Riser removal/recovery

A DSV will be on location to conduct the second phase of riser recovery and replacement operations within the 500m zone of the Anasuria FPSO, located within UKCS block 21/25 in the central North Sea, approximately 157km east of the Scottish coastline. Heading Control Tugs will also be in field.

The DSV is scheduled to mobilise in Aberdeen on 4th August 2022 . The activities are expected to take ca. 25 days to complete.  All activities will take place within the existing 500 m safety zone of the FPSO.

 

The activities are to recover and replace the test production riser and production riser. Grout bags will be installed to support the weight of the replacement risers.  

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Debris & Clearance Survey - Anglia A

Debris and Clearance using ROV operations from 4th July 2022 until 14th July 20222.

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Geophysical and environmental survey - Morgan and Mona Offshore Wind Farm Project

A geophysical and environmental (benthic) survey of the proposed Morgan and Mona Offshore Wind Farm Project will commence on the 02.04.22 for approximately 2 months. The survey involves the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel.

A geophysical and environmental (benthic) survey of the proposed Morgan and Mona Offshore Wind Farm Project will commence on the 01.04.22 for approximately 2 months. The survey involves the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel.

 

The extent of the planned survey is shown in Figure 1. The initial phase of the survey will cover the main offshore array areas, plus a larger buffer area (phase 1 survey). The survey vessel will start in the northern polygon and progress south. The second phase of the survey will cover the potential offshore cable corridors (phase 2 survey) up to the 15m water depth, with the vessel starting within the Mona potential cable corridor.

 

Coordinates of the offshore array are also provided below.

 

An Offshore Fisheries Liaison Officer (OFLO) will be present aboard the survey vessel – see details below.

 

Any at sea, operational issues should be directed towards the OFLO in the first instance.

 

More general queries about the survey and/or proposed Project can be directed towards the Fishing Industry Representative (FIR) and the Company Fisheries Liaison Officer (CFLO) – see details below.

 

All vessels are requested to maintain a safe distance (500m) from the survey vessel Ocean Observer at all times. Vessels will display appropriate shapes and lights when surveying.

 

Vessel Name:

Ocean Observer

Vessel Type / LOA(m):

Multi-Role Survey Vessel / 80.4 m

Vessel Function:

Survey vessel

VHF Call Sign:

GHXX

MMSI:

232217000

Vessel Operator Telephone:

+44 2039 917 728

+44 7584 686 311

 

  1. Project Contact Details

Offshore Fisheries Liaison Officer:

 

Chris Emerson (NFFO)

 

Email: nffo-flo@hotmail.com

 

Telephone: +44 750 748 4314

Fishing Industry Representative:

 

Tom Watson (NFFO)

 

Email: tomwatsonfleetwood@btinternet.com

 

Telephone: +44 790 317 3624

Company Fisheries Liaison Officers:

 

Beth Owens (MarineSpace)

 

Email:

yellow1-2cflo@marinespace.co.uk

 

Telephone: +44 783 355 7808

 

Jonny Lewis (MarineSpace)

 

Email:

yellow1-2cflo@marinespace.co.uk

 

Telephone: +44 781 764 4284

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Geophysical and environmental survey - Morgan and Mona Offshore Wind Farm

A geophysical, geotechnical and environmental survey of the proposed Morgan and Mona Offshore Wind Farm Project will be undertaken in June/July. The survey involves the use of Multibeam Echosounder (MBES) and Sidescan Sonar (SSS) some of which will be towed approximately 50m astern of the vessel.

The nearshore geophysical, geotechnical and environmental (benthic) survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project cable corridors will commence on the 10 June 2022. The survey involves the use of Multibeam Echosounder (MBES), Sub-bottom Profiler (SBP), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 50m astern of the vessel, during June. This will also include lowering equipment to the seabed to acquire environmental and geotechnical samples. Drop-down camera and grab samples will also be collected approximately every 1km during this period as well.

 

The survey area will cover areas inshore of the 15m water depth to approximately 2m. However, the survey vessel will only survey within a 1.5km width corridor within the survey area. The outline programme of works is provided below (not inclusive of weather delays).

 

All vessels are requested to maintain a safe distance (0.5 nm) from the survey vessel Titan Endeavour at all times. Vessels will display appropriate shapes and lights when surveying.

 

Approximate timings are as below:

 

Outline programme of works

Geophysical survey (inclusive of towed gear)

Mona

Start Date: 10/06/22

Estimated Duration: 10-12 days

Morgan

Start Date: 24/06/22

Estimated Duration: 10-12 days

Drop-down camera

Mona

Start Date: 03/07/22

Estimated Duration: 2-3 days

Morgan

Start Date: 05/07/22

Estimated Duration: 2-3 days

Benthic survey

Mona

Start Date:07/07/22

Estimated Duration: 2-3 days

Morgan

Start Date: 09/07/22

Estimated Duration: 2-3 days

 

Contact details for the Fishing Industry Representative are provided below.

 

Tom Watson (NFFO)

 

Email: tomwatsonfleetwood@btinternet.com

 

Telephone: +44 790 317 3624

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Survey - Ninian North

Mariners are advised that an environmental and geophysical survey will be conducted at the Ninian North site in the Northern North Sea, using vessel Ocean Endeavour starting around the 3rd July 2022 and will continue for 35 days (estimated).

Mariners are advised that an environmental and geophysical survey will be conducted at the Ninian North site in the Northern North Sea using vessel Ocean Endeavour starting around the 3rd July 2022 and will continue for 35 days (estimated).

 

Survey operations shall be conducted for CNR International (UK) Ltd. The survey will involve survey vessel MV Ocean Endeavour conducting environmental and geophysical survey operations. The surveys will consist of multibeam echo sounder, side scan sonar, and grab/camera sampling equipment. The side scan sonar sonar will be towed up to 600m behind the vessel and m above the seabed.

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Met Mast Special Mark Unlit

Please be advised that Moray East Met Mast Special Mark buoy has been reported as unlit. Update on vessel(s) involved in the repair work will be provided through future NtMs, These can be accessed in the Moray East website. Please be aware that while navigating the area to keep an extra look out for the unlit Met Mast Special marker buoy during the hours of darkness and reduced visibility, until such a time as the buoy is repaired.

Please be advised that Moray East Met Mast Special Mark buoy has been reported as unlit Further details on the buoy location are provided below

 

Name

WGS84

WGS84 UTM Zone 30N

Latitude (dms)

Longitude (dms)

Easting (m)

Northing (m)

Met Mast Special Mark Buoy, Pillar shaped with a Yellow X shaped top mark, exhibiting a Flashing Yellow light 5s

character

 

 

58° 10' 928" N

 

 

2° 49' 215" W

 

 

510574

 

 

6449000

 

 

Please be aware that while navigating the area to keep an extra look out for the unlit Met Mast Special marker buoy during the hours of darkness and reduced visibility, until such a time as the buoy is repaired.

 

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Well Drilling Campaign - Catcher Infill (Burgman)

Notice to alert sea users to drilling activity within the Catcher Area in block 28/09a, at the Burgman template location, using the Maersk Innovator MODU. The Maersk Innovator jackup drilling rig is currently on location in the Catcher Area, at the Catcher North template.  It is due to complete operations on the current well in late July 2022, then move to the Burgman template location.

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Survey - Strathspey

Mariners are advised that environmental sampling and a geophysical survey will be conducted at the Strathspey site in the Northern North Sea, 94nm off the coast of Lerwick, using vessel Ocean Endeavour starting around the 3rd July 2022 and will continue for 21 days (estimated).

Mariners are advised that an environmental and geophysical survey will be conducted at the Strathspey site in the Northern North Sea, 94nm off the coast of Lerwick, using vessel Ocean Endeavour starting around the 3rd July 2022 and will continue for 21 days (estimated).

 

Survey operations shall be conducted for CNR International (UK) Ltd. The survey will involve survey vessel MV Ocean Endeavour conducting environmental and geophysical survey operations. The surveys will consist of multibeam echo sounder, side scan sonar, and grab/camera sampling equipment. The side scan sonar sonar will be towed up to 600m behind the vessel and m above the seabed.

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Well Drilling Campaign - Catcher Infill

Notice to alert sea users to drilling activity within the Catcher Area using the Maersk Innovator MODU in Block 28/9. The Maersk Innovator Drilling Rig is due mobilise from Denmark to the Catcher Area in February 2022 and should be on location at the Catcher North drilling template in early March 2022. 

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Development Area Site Investigations - Inch Cape Offshore Wind Farm

Fugro will be performing vessel mounted bathymetry survey on behalf of Inch Cape Offshore Limited. The works are to be carried out within the Development Area (see Figure 1 below) for the consented Inch Cape Offshore Wind Farm located within the Outer Firth of Tay. This scope of works will commence on or after 02nd of July and are expected take up to 10 days to complete, weather permitting. The works will be undertaken using the vessel Mainport Geo call sign: V7A4270

Please be advised that Fugro will be performing vessel mounted bathymetry survey on behalf of Inch Cape Offshore Limited. The works are to be carried out within the Development Area (see Figure 1 below) for the consented Inch Cape Offshore Wind Farm located within the Outer Firth of Tay.

 

This scope of works will commence on or after 02nd of July and are expected take up to 10 days to complete, weather permitting. The works will be undertaken using the vessel Mainport Geo call sign: V7A4270.

 

During the survey the vessel will be displaying the relevant RAM lights and displays during periods of restricted manoeuvrability. Whilst not recommended, vessels entering the survey area are requested to maintain a 500 m safety zone. 

 

Vessel Name

Call Sign

Vessel Type

Operator

Phone Number

Email Addresses

Mainport Geo

V7A4270

Supply/Survey Vessel

Fugro GB Marine Ltd / Mainport Holdings Ltd

+353 21 202 8177

pc.mpgeo@fugro.com

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Location of settlement trays for European Lobster settlement Index

HFIG working with NEIFCA, have secured funding to deploy settlement cages within the NEIFCA district. This notice contains information for settlement cages deployed south of Flamborough Head only. The metal cages consist of a square cage (61.0 x 91.5 x 15.0 cm), filled with cobble weighing approximately 100 kg. Each cage is marked with a surface marker buoy labelled with HFIG. There are four cages deployed approximately 200 m apart in each of the sites.

The metal cages consist of a square cage (61.0 x 91.5 x 15.0 cm), filled with cobble weighing approximately 100 kg, each cage is marked with a surface marker buoy labelled with HFIG. There are four cages deployed approximately 200 m apart in each of the sites, three of which will remain deployed for the summer season (until late September), the other will be hauled and processed approximately every 2 weeks. The RV Huntress will be conducting the deployment and recovery in the Holderness area. Care is to be taken around these location to ensure no snagging of the cages occurs leading to hazard to the vessel or disruption to the experiment.

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Survey - Sheringham Shoal and Dudgeon Extension

Mariners are advised that a hydrographic and geophysical survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm on the North Norfolk coast using vessel Ocean Researcher starting around the 1st March 2022 and will continue for 180 days (estimated). UPDATE 08062022 - acquisition is continuing

Mariners are advised that a hydrographic and geophysical survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm on the North Norfolk coast starting around the 1st March 2022 and will continue for 180 days (estimated).

 

Survey operations shall be conducted for Equinor ASA. The survey will involve survey vessel MV Ocean Researcher conducting hydrographic and geophysical survey operations on sites as described below. The surveys will consist of multibeam echo sounder, side scan sonar and magnetometersonar, and towed magnetometer arrays. The side scan sonar and magnetometer arrays will be towed up to 300m behind the vessel and 10m above the seabed.

Boundary coordinates are as follows:-

Point

Latitude

Longitude

1

53°13'49”N

001°09'28"E

2

53°05'29"N

001°31'29"E

3

52°59'13"N

001°22'41"E

4

53°03'00"N

001°12'12"E

 

During the survey, the vessel will display the prescribed lights and signals for survey operations and will be monitoring VHF Channels 16 and 12.

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Construction of Wind Farm - Triton Knoll

Activities related to the development of the Triton Knoll wind farm continue, as detailed below. For background information visit: http://www.tritonknoll.co.uk Mariners are advised that the asset installation phase of the Triton Knoll OWF is now complete. Post-installation commissioning and repair activity is continuing and it is anticipated that construction vessels required for repair work will be returning to site occasionally in early 2022 and further notices will be issued accordingly.

Mariners are advised that the following vessel will be commencing operations at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined below:

 

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Ginny Louise Passenger vessel 2FCV4 235090162 - Grimsby 22/07/2022

 

Mariners are advised that the following vessels continue to be active at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined within previously issued NtM's:

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Windcat 11 Crew Transfer Vessel 2BIS9 235066459 N/A Grimsby 14/12/2020
Esvagt Havelok Service Operations Vessel OYFR2 219026496 9878981 Grimsby 25/09/2021
Seacat Courageous Crew Transfer Vessel 2IDC9 235108711 9758052 Grimsby 01/05/2022
Seacat Intrepid Crew Transfer Vessel 2HWU6 235107284 9758040 Grimsby 05/05/2022
Cerys Line Utlility Vessel MGMR5 232025503 8228842 Grimsby 13/06/2022

 

All vessels can be contacted via VHF channel 16 when operational in field.

 

Activities carried out over the previous 7 Days:

  • Ongoing activities at Offshore Sub Station Platforms East & West continues.
  • Ongoing activities at Offshore foundations continues.
  • Wind Turbine Generator Service and maintenance continues infield.
  • Arrival of Cerys Line and commenced Subsea Survey.
  • Arrival of Ginny Louise.

Activities planned for the next 7 days:

  • Ongoing activities at Offshore Sub Station Platforms East & West continues.
  • Ongoing activities at Offshore foundations continues.
  • Wind Turbine Generator Service and maintenance continues infield.
  • Onging Subsea Surveys undertaken by the Cerys Line.
  • Deaprture of the Jacobus.

*** Note ***

 

All 90 WTG's have now been fully installed, whilst WTG commissioning and service continues.

All Export Cables are fully installed/buried and need to be deemed live/energised.

All Inter Array Cables are fully installed and buried and need to be deemed live/energised.

Whilst the main installation works have been completed, major construction commissioning works are continuing.

 

*** Note ***

 

Whilst TKOWFL is reopening the site to fishing from the 14th December 2021, TKOWFL kindly request that all fishermen intending to fish within the boundaries of the Triton Knoll wind farm, contact the Triton Knoll control room prior to entering and exiting the field, and inform them of their fishing intentions.

 

This precaution is requested to safeguard all vessels operational at the TKOWF site (including fishing vessels) and your cooperation, to ensure the safety of all parties is appreciated. The following contact details should be used when notifying the Triton Knoll control room of fishing activity:

 

Control Room Manager: Derek Whyte

Radio: VHF channel 16

Callsign: TK MCC

Phone: +44 1793 896250

Email: tkcr@rwe.com

 

*** Note ***

 

Application of Triton Knoll Wind Farm Safety Zones During Construction

The Secretary of State has granted the Application of Safety Zones on the Triton Knoll Wind Farm Project as follows:

  • 500m “rolling” safety zones around any structure where construction is being undertaken (as indicated by the presence of construction vessels).
  • 50m pre-commissioning safety zones surrounding partial structures or completed structures prior to commissioning.

Mariners are advised that all foundations monopiles have been installed and all inter-array and export cables have been installed.

 

Local Notice to Mariners Recently

NtM 001-2022 (24th January 2022)

NtM 002-2022 (28th January 2022)

NtM 003-2022 (08th March 2022)

NtM 004-2022 (09th March 2022)

NtM 005-2022 (14th March 2022)

NtM 006-2022 (30th March 2022)

NtM 007-2022 (7th April 2022)

NtM 008-2022 (7th April 2022)

NtM 009-2022 (10th April 2022)

NtM 010-2022 (19th April 2022)

NtM 011-2022 (04th May 2022)

NtM 012-2022 (04th May 2022)

NtM 013-2022 (06th May 2022)

NtM 014-2022 (06th May 2022)

NtM 015-2022 (13th May 2022)

NtM 016-2022 (18th May 2022)

NtM 017-2022 (08th June 2022)

NtM 018-2022 (22nd June 2022)

 

Navigation Warning - 08th January 2021

 

Mariners are advised that the remnants of a Wave Rider Buoy sinker weight and partial rigging are located within the Triton Knoll Offshore Wind Farm Construction site at the following location;

 

53° 30.442N 000° 50.564E

 

It is advised that the partial rigging could potentially be floating up to 9.7m above the seabed, reducing the navigable safe water in the immediate area to 10m LAT.  Mariners are advised to avoid the indicated position by 250 metres.

 

Possible Dangers to Navigation - Properties of the polypropylene show that the rope is buoyant, this makes the line sensitive for thruster currents. Taking the site water depth into consideration (19.7m LAT) and the maximum expected height above seabed of the rope 9.7m the line is expected to be floating submerged at approximately -10m LAT. In addition, it is noted that over time sediments will be trapped between the fibres and the heavier rope may finally sink. The polypropylene rope may impose a risk to foul propellers / propulsion of vessels due to the buoyant nature of the rope. As the rope is submerged at a depth of ~-10m LAT the risk is considered minimum for vessels with a shallow draught (<5m) and medium for a vessel with a deeper draught (>5m). Over time sediments will be trapped between the fibres and the heavier rope may finally sink thereby reducing the risk to propellers/propulsion of vessels. The clump weight itself (chain) is expected to have sunk into the seabed and has no significant height above seabed. In addition, the edges of the clump weight are mostly rounded (chain), the risk the clump weigh imposes to fishing activities/gear is therefore considered to be minimal.

 

Navigation Warning - 16th March 2021

 

Mariners are advised that two UXO targets have been confirmed within the Triton Knoll Offshore Wind Farm Array.

 

Mariners are advised that the two confirmed targets are located within 20 metres water depth (LAT) and a 10 metre radius exclusion zone is required around each target.  The following table provides the coordinates and a description for each target.

 

Description of Target Latitude Longitude

Water Depth

(LAT) Metres

Required Exclusion

Zone (Metres Radius)

Archaeological - The item is thought to be an air-delivered bomb.  It appears to be in a stable condition and is resting on the seabed.  Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. 53°31'50.249"N 00°47'45.908"E 20 10
Archaeological - The item is thought to be an air-delivered bomb.  It appears to be in a stable condition and is resting on the seabed.  Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. 53°31'49.895"N 00°47'45.115"E 20 10
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Site Survey and Target Investigation - Sofia OWF Export Cable Route & Array

All Mariners are advised that vessel Go Electra will commence mobilising on or around 30th June 2022 in readiness for commencing site survey and UXO target investigation works from early July 2022. The works will entail two phases.

Phase One: Investigating seabed targets that have the potential to be UXO or archaeological items of interest by means of a Work Class ROV (WROV) along the proposed route of the Export Cable and within the Sofia Array (Foundation and Wind Turbine Generator locations).  Phase one will be undertaken 24 hours per day.

 

- Go Electra will visit the location of the target to identify the nature of the target.

- In the event UXO or archaeological targets are found both will be fully investigated and left in situ.

- In the event there is debris that could cause disruption to site works the debris will be moved to a safe area.

- Boulder recovery works from within the footprint of the Offshore Converter Platform using clamshell grab and relocation of boulders within the DCO order limits.

 

End of Phase One activities. Vessel returns to port for reconfiguration for Phase Two activities.

Phase Two: Removal / Relocation / Detonation (where required).

 

Phase two will be undertaken during daylight hours only.

 

A UXO target will be assessed by Explosive Ordnance Disposal / UXO experts onboard the vessel.

The condition, state of burial, size, etc. of the target is assessed.

The options for UXO clearance are limited to:

- Disposal (detonation) of the UXO.

- Relocate the target using remote means to a suitable location.

- Leave the UXO As-found.Note: Prior to any disposal by detonation, the following warning protocol shall be followed by the Go Electra: At Local Time minus four hours, thirty minutes and ten minutes, safety messages will be transmitted on VHF Channel 16 and as designated by the regional VTS authority if required.

- Securite x 3, All Ships x 3.

- This is Vessel “Go Electra” x 3.

- I am conducting Explosive Ordnance Disposal Operations.

- There will be a controlled underwater explosion in position: Lat:……… Long:……. At: (Local Time)

- All Vessels are requested to keep clear of position by one Nautical Mile.

- This is Vessel “Go Electra”

 

NOTE: The final ten second countdown leading up to the detonation will also be transmitted on VHF Channel 16. It is always requested that all vessels maintain a minimum of 500m separation distance from the Go Electra, adhere to Collision Regulations and pass at reduced speed during phase one works when exhibiting the shapes / lights identifying the vessel as Restricted in her Ability to Manoeuvre. During phase two works, a minimum of one Nautical Mile clearance is requested when detonation activities are taking place as outlined by the above safety broadcast on VHF. Go Electra shall be supported in her activities by the presence of Guard Vessels named “Atlas B” and “Moremma”  

 

Note: - Fishing gear shall not be deployed within 500m either side of the centre line as detailed by the coordinates of the works area. - Go Electra will frequently deploy two Met-Ocean Buoys within 500m either side of the line created by the coordinates of the works area. The latest positions of the Met-Ocean Buoys can be requested locally from Go Electra. - During Phase Two works, Go Electra shall be deploying noise monitoring equipment on the seabed to support the works. The positions of the noise monitoring equipment can be requested locally from Go Electra.

 

The following vessels will commence operations on the Sofia OWF project, as detailed within project Notice to Mariners;

 

Vessel Name Vessel Type Call Sign MMSI Number Length Beam Draught Tonnage IMO Number
Go Electra Survey & Clearance Vessel V7ZR6 538005197 79.67m 16.4m 5.6m 4071 9545481
Atlas B Guard Vessel MPUD3 235001670 21.8m 5.2m 3.0m 173 8792415

Moremma

Guard Vessel MKHC6 235007170 22.95m 7.07m 3.0m 172 9545481

 

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Carradale-Arran Wet Storage and Installation of HDD Ducts

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Carradale-Arran submarine electricity cable. As part of the cable replacement project, 2 off Horizontal Directional Drilling (HDD) operations will be carried out, with the aim to install 2 of 400mm SDR11 HDPE ducts that will allow the Carradale-Arran cable to reach the onshore connection point.

Overview Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Carradale-Arran submarine electricity cable.

As part of the cable replacement project, 2 off Horizontal Directional Drilling (HDD) operations will be carried out, with the aim to install 2 of 400mm SDR11 HDPE ducts that will allow the Carradale-Arran cable to reach the onshore connection point.

 

The purpose of this notice is to outline the area for the HDD duct installation works including temporary storage of two duct lengths of approximately 420m in length.

Nearshore Support Operations Location: Nearshore north of Port Crannaich

Dates of operations: 27th June 2022 - 31st July 2022

 

Vessels Operating on site

Works will take place in the nearshore area north of Port Crannaich. The 2 x 420m floating pipes will be pulled using the Oscar to the given storage location within the area indicated below. The pipes will then be pulled into the offshore HDD assisted by all the three vessels that are being operated for this this work.

Leask Marine moorings will be onsite for the stated duration. Leask Marine C-Defender will also be on site working as line and support boat.

 

Details of lights, buoys and other navigational aids Mooring buoys at each end of the 420m floating pipe are marked with Colour yellow - flash yellow light – 1 FY5s – Light range 1nm

 

Marker lights (4 white and 4 orange strobe) are also distributed throughout the length of the pipe and are on continuous flash.

Proposed routes of vessels involved in installation (from port to site) Main Vessel Route Port Crannaich to Site and site to Port Crannaich. Campbeltown harbor authorities will be notified of all operations and movements

 

Details of any areas to be avoided

Vessels are requested to maintain a minimum distance of 250 meters from the working area enclosed within the co-ordinates indicated in the attached NtM.

Instructions to vessels Vessels involved will be keeping continuous listening watch on Channel 16 and 6 and will display appropriate lights and marks as required by the International Rules for Preventing Collisions at Sea. Mariners are requested to give the works a wide berth.

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Foundation Installation Campaign - Dogger Bank A

The Offshore installation vessel, Innovation, will install monopile foundations, within the Dogger Bank A construction area.

The works will commence on the 13th of July 2022, continuing until approximately Q3 2023 The works will be continuous 24 hours a day. Charts of the DBA construction area and foundation locations are provided below. The first three foundation locations are highlighted in red. A running list of the next locations to be installed and completed foundation locations will be presented in the Weekly Notice of Operations.

 

During operations, the Innovation will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

 

During operations, a Statutory Safety zone of 500m radius will be in place around the Innovation during the installation of foundations.  The safety zones will be monitored by a guard vessel. The primary response will be to warn passing traffic of the ongoing works and any active safety zones, and to alert any vessels where an infringement may occur or has occurred.

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Seagreen Offshore Wind Farm – Scour protection installation

Subsea scour protection rock installation will continue on the Seagreen offshore wind farm wind turbine generator suction caisson foundation structures within the Seagreen site boundary

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install seabed scour protection rock to the wind turbine generator suction caisson foundation structures within the Seagreen site boundary.

 

The Flexible Fall Pipe Vessel (FFPV) Bravenes will transport the scour protection rock to the Seagreen site and install it on the seabed using it’s flexible fall pipe system. This allows scour protection to be installed around the suction caisson foundation structures to a high degree of accuracy. At the end of the fall pipe a remotely operated vehicle will be used to control the flow of rock to the seabed. The FFPV Braveness is expected to arrive on site to commence works on or around the 3rd of July 22.

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Construction Support Vessel -Saturn Banks Development

EDT Hercules CSV will be undertaking various activities to support the installation of the Saturn Banks Development

Subsea 7, on behalf of IOG, will be undertaking various construction support activities across the development from the vessel EDT Hercules.  This work will include installing mattresses at locations along the pipelines:

•    Blythe Export Pipeline (PL4956),  •    Saturn Banks Export Pipeline (PL5152).  

 

The vessel will also undertake FCGT and metrology activities on the newly laid section of PL5152 in the Southwark field.  

The vessel will be using a crane to install mattresses and deploying a remotely operated vehicle (ROV) in the water, severely restricting her ability to manoeuvre.

 

Whilst performing these activities the vessel shall either be static or moving at a maximum speed of <1 knot.  Vessel heading may not be indicative of direction of travel and operations will be conducted on a 24-hour basis.

 

It is requested that no marine activities occur within 500 metres of the vessel during this operational period.

 

Vessels in transit are also requested to maintain a minimum distance of 500 metres when passing the construction vessel.

 

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Survey - Dunlin Alpha (Ref: 1417)

A 30 Day Route Survey using the vessel Atlantis Dweller call sign: 8PAB3 between 8th July 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Fugro

Atlantis Dweller

8PAB3

N/A

19/07/2022 - 31/08/2022

For 30 Days

211

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Survey - Ben Lawers Site Survey (Ref: 1421)

A 9 Day Site Survey using the vessel Stril Explorer call sign: LAZT7 between 19th July 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Ocean Infinity

Stril Explorer

LAZT7

N/A

19/07/2022 - 31/08/2022

For 9 Days

204

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Survey - Schiehallion Site Survey (Ref: 1420)

A 13 Day Site Survey using the vessel Stril Explorer call sign: LAZT7 between 19th July 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Ocean Infinity

Stril Explorer

LAZT7

N/A

19/07/2022 - 31/08/2022

For 13 Days

204

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Dropped Pipeline - Carrack QA Platform

Dropped Pipeline 16 mtr x 4" section of redundant Pipeline resting on seabed. Plans to recover

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Survey - Schooner 500m Zone & Schooner Pipeline (Ref: 1419)

A 10 Day Route Survey using the vessel Normand Superior call sign: LATJ7 between 27th June 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Ocean Infinity

Normand Superior

LATJ7

N/A

27/06/2022 - 31/12/2022

For 10 Days

44

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Survey - Ketch 500m Zone & Ketch Pipeline (Ref: 1418)

A 82.5 Day Route Survey using the vessel Normand Superior call sign: LATJ7 between 27th June 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Ocean Infinity

Normand Superior

LATJ7

N/A

27/06/2022 - 31/12/2022

For 82.5 Days

44

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HVDC Pre-lay and Post-lay Mattressing Work

Pre-lay and post-lay mattress installation planned for the Viking Link project which is an HVDC electricity transmission interconnector between Denmark and England, a joint venture between National Grid and Energinet. Pre-lay mattressing installations are planned to take place from mid-June 2022 to July 31st 2022. Post-lay mattresses installation is planned to take place from July 8th to August 15th 2022. Using the Support vessel Aethra call sign: 5BHH4.

The route length of the main HVDC interconnection (2x bundles power cables + 1x Fibre Optic Cable) is in the order of 620km. The works covered within this Notice to Mariners are divided in the following activities:
activities:

  • Cable Pre-Lay and Post-Lay mattressing protection at Ketch to Murdoch crossing (UK waters)
  • Cable Pre-lay mattressing protection at:
  • D18a to D15a (NL waters)
  • D15-FA to L10-AC (NL waters)

The mattressing works are being carried out by:
Asso Subsea using TSV Aethra (IMO 9181481; Call Sign 5BHH4)
Vessels are requested to pass at a safe speed and distance and fishing vessels are advised to remain a safe distance, approximately 550m (0.3 nautical miles) from the areas identified. During these works the vessel will have restricted manoeuvrability as it completes its work scope.


VHF CH 16 will be monitored at all times and will be used to contact the coastguard in the event  of an emergency.
 

At service crossings the method of protection agreed has been the use of concrete mattresses/concrete bridge structure, to be placed before the Viking HVDC cable C5 lay at the crossings location reported below:
 

 

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Survey - Hornsea Four

Orsted Hornsea Project Four (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of Geotechnical survey works from the 20th of June 2022. The survey is being undertaken for the purposes of geotechnical investigations of the Hornsea Project Four Offshore Wind Farm (Hornsea Four) project, located within the UK Sector of the North Sea, off the coast of East Yorkshire. From 15th June 2022 for 91 Days using vessel Gargano call Sign: VSMW5

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Pre-Construction Survey Greenlink Interconnector

Pre-Construction Geophysical Survey of the Greenlink Interconnector Route. The survey works will be conducted by the Geo Ocean V (call sign 5BWE3/MMSI 253754000): a multi-disciplined Offshore Survey Vessel with hybrid propulsion fitted for Geophysical and Geotechnical survey work. The vessel will have stern deployed equipment and will be restricted in manoeuvrability.

All vessels operating within this area are requested to keep a 500m distance and pass at minimum speed to reduce vessel wash. The vessel will always be listening to channel 16 but can set any other channel as required.

 

Throughout operations, the vessel will be displaying the appropriate lights and shapes as required under the COLREGS Rule 27(b)  

 

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Survey - White Cross Offshore Wind Farm

From the 29th of May 2022, N-SEA will be conducting geophysical, (limited) UXO and environmental surveys within the area. The offshore works will be completed by N-Sea personnel on the survey vessel ‘Braveheart Spirit’ and the ‘Geo Focus’.

Please be advised that from the 29th of May 2022, N-SEA will be conducting geophysical, (limited) UXO and environmental surveys within the area provided. The survey consists of an offshore windfarm location, and its export cable route corridor. The geophysical and UXO survey will employ MBES, SSS, High-resolution Sub-Bottom Profiler, Single Channel Sparker and Magnetometers. The environmental survey will acquire drop down video footage and grab samples. Sparker operations are limited to the OFW only.

 

The offshore works will be completed by N-Sea personnel on the survey vessel ‘Braveheart Spirit’ and the ‘Geo Focus’. Full vessel details are presented in the Notice to Mariners.

 

The ‘Geo Focus’ will arrive end of May in the field, while the ‘Braveheart Spirit’ is expected to join operations mid June.

All environmental sampling will be executed by N-Sea subcontractor Ocean Ecology.

 

The survey operations involve towed survey equipment (SSS, Magnetometer and Sparker), and no equipment will be left on the seabed.

This notification is intended for circulation to all interested parties undertaking or managing activities in the vicinity of the planned survey works.  If you would like further details regarding the surveys please contact the N-Sea project manager using the contact details at the head of this communication.

 

Liaison and General Operational Principles

  1. The survey contractor will ensure advance notice of survey works is provided to all marine users.
  2. As near-shore areas have the potential to hold higher densities of static fishing gear, all survey operations will be undertaken during daylight hours.
  3. Where considered appropriate, a Fisheries Liaison Officer will be used to provide advice to the survey contractors and facilitate liaison with the fishing industry.
  4. During liaison, should areas of high fishing density be identified, best efforts will be made to modify survey plans (either the location of survey sites or timing of operations) to avoid damage to both survey and fishing gear.
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Development - Pierce Field

Installation of Gas Export Riser & Preparatory activities ahead of tying of the new riser.

Vessel activity scheduled for late June in the Pierce field.

 

CSV – (7 Oceanic) Pierce Field Development – Infield  28/06/21 – Depart Field 05/07/21

  • Installation of Gas Export Riser

 

DSV (Kestrel) – Pierce Field Development  – Infield  02/07/21 – Depart Field 09/07/21

  • Preparatory activities ahead of the tying in of the new riser
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Survey Operations - Morgan (North) & Mona (South) offshore wind farms project - Eastern Irish Sea

Nearshore Survey Operations - Eastern Irish Sea. Great Orme / Colwyn Bay - South Blackpool / Lytham St Annes

Attached is a Notice to Mariners issued by Marine Space concerning the GEOPHYSICAL, GEOTECHNICAL AND ENVIRONMENTAL (BENTHIC) SURVEYS of the proposed nearshore Export Cable corridors for the MORGAN and MONA ROUND 4 WIND FARM PROJECT. PLEASE READ THE NOTICE

 

The 14 meter survey vessel ‘TITAN ENDEAVOUR, currently in Barrow waiting on weather, will carry out survey operations of the Nearshore Area off SOUTH BLACKPOOL / LYTHAM ST ANNES as soon as weather and conditions improve. (picture of ‘TITAN ENDEAVOUR’ on page 2 of the attached notice)

 

This survey involves the use of Multibeam Echo Sounders (MBES), Sub-bottom Profiler (SBP), Side Scan Sonar (SSS) and Magnetometer equipment some of which will be towed approx. 50 meters astern of the survey vessel. It will also involve the lowering of equipment to the seabed to acquire environmental and geotechnical samples i.e. a Drop Down Camera with Grab Samplings collected at approx. every 1Km.

 

THEREFORE A WIDE BERTH, MINIMUM 500 METERS, IS REQUESTED AT ALL TIMES AROUND ‘TITAN ENDEAVOUR’ AND PASSING VESSELS ARE REQUESTED TO REDUCE SPEED IF POSSIBLE.

 

PLEASE NOTE

The survey will only cover areas inshore of 15 meters water depth and to approx. 2 meters water depth, the extent of the two planned survey areas are shown as two blocks on the small chartlet on page 3 of the attachment. The GREAT ORME / COLWYN BAY one is brown - The SOUTH BLACKPOOL / LYTHAM ST ANNES one is green , the co-ordinates are shown on pages 3 & 4. However it should be noted that survey operations will only take place within a 1.5Km wide corridor within each survey area or block

 

IT IS NOT INTENDED, OR EXPECTED, FOR THIS SURVEY TO INTERFERE WITH ANY FISHING OPERATIONS BUT IF ANY FISHERMAN HAS ANY GEAR DOWN IN THE AREAS OF SURVEY COULD THEY PLEASE MAKE SURE THAT THE GEAR IS CLEARLY MARKED AND SEND ME THE LAT. AND LONG. POSITIONS SO THAT I CAN PASS THEM TO THE SURVEY BOAT, OR THEY CAN CONTACT THE SURVEY BOAT DIRECT.

 

ANY INFORMATION GIVEN WILL BE TREATED IN THE STRICTEST CONFIDENCE.

 

PLEASE READ THE NOTICE and do not hesitate to contact me if you are unsure of anything or require any further information

 

A listening watch will be kept on VHF Channels 16 & 12 and ‘TITAN ENDEAVOUR’ can be contacted for information relating to vessel movement only.

 

Please pass this information to any of your colleagues who you think might be interested.

 

These notices are primarily aimed at fishermen who operate in the area of the survey but this information will also be of interest to all other mariners and users of the sea who operate in the Eastern Irish Sea.

 

If you know of any fisherman or any other user of the sea who works the area and does not receive this information or anybody else who would benefit from this information please let me know.

 

Regards  :  Tom Watson

Tel……..…..Home 01253 875565

                   Mobile 07903 173 624

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External Dive Works - Greater Gabbard Offshore Wind Farm

From 01st July 2022 for a period of approx. 5 weeks, external dive works will be conducted at the Greater Gabbard Offshore Wind Farm on 5 wind turbines and ROV works an 10 locations. Site work is planned to commence around 01st July 2022 using vessel MCS Kaver call sign:2GMB8 (subject to weather delays) and will be undertaken as weather permits, expected completion by 15th August 2022.

Description of works:
Works will include positions around the cable routes and entering the 50m exclusion zone on the following assets only.

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Disconnection of KIN-03 & Tow to quayside - Kincardine Offshore Windfarm

The floating wind turbine KIN-03 will be towed to a quayside facility for maintenance. The tow is due to commence on the 4th /5th July 2022. The site will have a guard vessel Genesis BF 505 call sign: MSDK3 on site from midnight on Sunday 3rd July 2022. The Guard vessel will be on site for 9 to 10 days.

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Rig - Valaris Gorilla V

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Hydrographic Survey - Enard Bay

The Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey in June in Enard Bay. The proposed works are planned from 23rd June 2022 and will last approx. 100 days Using vessel MV JiffWorker call sign:FFZL.

The deployment location will be marked by 1 yellow buoy, marked “survey”, and 1 orange buoy. Mariners are requested to navigate with caution in this area.
 

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Rig - Seafox 2

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Polymer Injection Flowline Installation - Captain EOR

A polymer injection flexible flowline will be installed between the Captain BLPA and the Captain Area B UTM structure (well b28). As part of the Captain EOR Stage 2 project a new 6" polymer injection flowline will be installed.  It will be installed between the Captain BLPA and the Captain Area B UTM structure (well b28). The flowline will be installed from a construction vessel and will be jet trenched for protection using ROV.

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Pipeline Installation - Abigail Project

A 12km 6”/10” pipe in pipe production pipeline with a piggybacked 3” gas lift pipeline, and an umbilical will be installed as part of the Abigail project. They will be installed between a new Abigail drill center manifold and the existing Greater Stella Area Main Drill Centre manifold. The pipeline installation is due to commence 10th June and complete by 30th June.  The pipelines will be installed by reel lay and will then be trenched and buried. A survey vessel will also be in-field.

As part of the Abigail project we will be installing a 12km 6”/10” pipe in pipe production pipeline with a piggybacked 3” gas lift pipeline. The pipelines will be installed between the Abigail drill centre (a new manifold will be installed and one production well initially) and the existing Greater Stella Area Main Drill Centre Manifold.  The pipelines will be installed using a reel lay vessel and will then be trenched and buried for protection.  The current project schedule indicates that the installation workscope is due to commence offshore in May 2022.

 

The pipeline coordinates for the start and end points are summarised in the table below.  The pipeline crosses the existing Ithaca Stella Gas Export Pipeline (trenched and buried), and the crossing will be rockdumped for protection, the location is also detailed in the table below.  The installation is planned to commence in May and conclude end of August/September.  The initial planned campaigns are structure installation early May, followed by pipeline installation, pipeline trenching, umbilical installation (into the trench) and then backfilling.  The Dive Support Vessel is the last workscope and mobilises in August to perform the spoolpiece tie-ins and leaktesting.

 

The pipeline installation is due to commence 10th June and complete by 30th June.  The pipelines will be installed by reel lay and will then be trenched and buried.

 

 

Easting

Northing

Comment

Abigail Manifold

432650

6294950

Planned location

Pipeline Crossing (Stella Gas Export)

443995

6294585

Crossing of existing Stella Gas Export Pipeline (trenched and buried)

Stella Main Drill Centre Manifold

444500

6294649

Existing

 

*coordinates are Universal Transverse Mercator (UTM) Zone 31 using international spheroid (ED 50), central meridian 3º East.

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Geophysical and Unexploded Ordnance Survey

Seaway 7 will conduct a geophysical/unexploded ordnance survey within the boundaries of the Seagreen Offshore Wind Farm. On behalf of Seagreen Wind Energy Ltd. Seaway 7 will commence a geophysical/unexploded ordnance survey on four spare asset locations within the boundary of the Seagreen site. The survey vessel Mersey Guardian is expected to arrive at site on or around the 25th of June to commence calibrations and survey operations.

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Acoustic Receiver Cannisters Deployed on Seabed - Gunna Sound

NatureScot, in collaboration with University of Exeter, have deployed 10 Acoustic Receiver Cannisters in the Sea of the Hebrides around Gunna Sound. The ARCs are low profile (35cm height and <0.75m2) and consist of 3x11 inch floats fixed to a delrin plate that holds the acoustic receiver floating ~1m above anchor (~70kg chain links). The ARCs will be serviced twice a year remotely from a vessel and completely removed at end of 3-5 years. There is no surface marker associated with these devices.

NatureScot, in collaboration with University of Exeter, have deployed 10 Acoustic Reciever Cannisters in the Sea of the Hebrides around the Gunna Sound area (as part of Marine Scotland Science Alba Na Mara June research cruise).

The intention of deploying the ARCs is to collect acoustic information on the movement and residency of tagged basking sharks with the Marine Protected Area, to provide data to aid conservation.

 

The ARCs are low profile (35cm height and <0.75m2) and consist of 3 x 11 inch floats fixed to a delrin plate that holds the acoustic receiver floating ~1m above anchor (~70kg chain links). The ARCs will be serviced twice a year remotely from a vessel and completely removed at end of 3 - 5 year (end date will depend on battery life of tags and when the tags are deployed). There is no mooring line associated with these devices, and are retrieved by triggering (at surface) a recovery line from ARC unit, so there is no tether to the surface.

 

If an ARC is accidently recovered please retain and contact NatureScot (using point of contact).

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Temporary marker buoy - Export cable ducts of the Dogger Bank A and Dogger Bank B export cables

This notice to mariners (NtM) relates to the location of a temporary marker buoy positioned between the export cable ducts of the DB A and DBB export cables

This revised notice to mariners (NtM) relates to the location of a temporary marker buoy positioned between the DBA and B export cable ducts.

 

The Nearshore works for DBA export cable have now been completed, with the cables and cable ducts now fully buried. The temporary marker buoy has now been moved back to a position between the DBA and DBB duct exit points. The buoy will remain in this position until the nearshore works for DBB commence in 2023.

On completion of all the nearshore works, estimated for end July 2023, the temporary marker buoy will be removed from site. This NtM supersedes LF500013-MIP-DOG-NOT005 Rev03, issued on the 19th December 2021

 

The marker buoy characteristics are: Yellow Special Mark, light pattern: Fl(Y)5s Mariners are reminded to navigate with caution, keeping a safe passing distance from the temporary marker buoy and keeping a continuous watch on VHF Ch. 70/16 when navigating the area.

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Guard Vessel Deployment - Dogger Bank A Export Cable

Burial of the Dogger Bank A Offshore Windfarm Export Cable is ongoing. Guard vessels have been deployed to protect the cable bundle until the cable is adequately protected by means of trenching or rock placement. Update - Guard Zone 8 & 9 reached approved Dept of Burial. Guard Vessels have been released.

To provide the required coverage, approximately 15 guard vessels will be used in the period from the 12th April 2022 until the 14th August 2022. Durations at each location will depend on progress of the cable installation, trenching and rock placement operations. Not all the vessels are expected to be used concurrently.

 

The primary purpose of the guard vessels is to protect exposed cable along the Dogger Bank A Export Cable corridor by monitoring and issuing warnings to marine traffic operating within 6nm of the construction area with a Closest Point of Approach (CPA) < 1.5nm. More specifically, the focus will be on those vessels with potential to be engaging in bottom contact activities such as fishing and anchoring, as these activities pose a risk not only to the exposed cable bundle but also to the vessels themselves.

 

The guard vessels will be clearly marked and display a highly visible "GUARD" sign on each side. The vessels will operate 24hrs, in all but extreme weather. Exchange of vessels on site will ensure the relevant section of cable is never left unguarded.

 

In sections where cable protection has been completed, guard vessels will be released and sections will be opened up for fishing or use of other of equipment with seabed intervention. This may not necessarily be in a sequential order from shoreside outwards.

 

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Dogger Bank B Inter-Array Cables Route Clearance

The Offshore Supply Vessel, WORLD PEARL, will perform the Route Clearance operations on Dogger Bank B Inter-Array Cables routes. The works will be performed in a single campaign, commencing on the 29th of June 2022 and continuing until approximately 3rd of August 2022. The works will be continuous, 24 hours a day.

The operations include the relocation and/or removal of subsea objects, such as debris (e.g. steel wire) and boulders, by means of a subsea Grabbing Remoted Operated Vehicle (GROV) within the array cable routes.

 

During operations, the WORLD PEARL will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

 

It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Offshore Supply Vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

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Spirit Energy East Irish Sea Marine Survey

Spirit Energy, in conjunction with Harbour Energy, has contracted the Fugro-operated Fugro Mercator survey vessel to undertake a combined geophysical and environmental site survey of certain surface and subsea assets in the vicinity of the North Morecambe and South Morecambe gas fields (and associated fields) located in the east Irish Sea. An inshore section of the Calder pipeline will also be surveyed.

The geophysical component of the survey will involve multibeam echosounder and sidescan sonar techniques (with the vessel underway and towing survey apparatus). A sub-bottom profiler will also be used at Millom W. The environmental component of the survey will involve seabed (benthic) sediment ‘grab’ sampling, and seabed photo / videography techniques being undertaken at approximately 76 stations (with the vessel stationary).  The geophysical component of the survey will involve multibeam echosounder and sidescan sonar techniques (with the vessel underway and towing survey apparatus). A sub-bottom profiler will also be used at Millom W. The environmental component of the survey will involve seabed (benthic) sediment ‘grab’ sampling, and seabed photo / videography techniques being undertaken at approximately 76 stations (with the vessel stationary).  The geophysical component of the survey will involve multibeam echosounder and sidescan sonar techniques (with the vessel underway and towing survey apparatus). A sub-bottom profiler will also be used at Millom W. The environmental component of the survey will involve seabed (benthic) sediment ‘grab’ sampling, and seabed photo / videography techniques being undertaken at approximately 76 stations (with the vessel stationary).  

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Subsea Pipeline Activities - Pickerill

Perenco Gas UK Ltd is planning to cut and remove the decommissioned Pickerill A and Pickerill B pipeline ends. All pipeline operations are to be undertaken within the Pickerill A and Pickerill B 50 m safety zones. The Maersk Achiever will mobilise from the port of Blyth in the UK on the 4th July for a 12 days campaign

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White Cross - Floating LiDAR system deployment

Please be advised that from the 09th of July 2022, one Floating LiDAR system is to be deployed to the Celtic sea to record wind and metocean data.

Please be advised that from the 09th of July 2022, one Floating LiDAR system is to be deployed to the Celtic sea to record wind and metocean dataPosition and coordinates where the FliDAR buoy will be deployed are provided in the table and charts below. The buoy will be deployed from Padstow harbour. The buoys will be in situ for 12 months (but up to 24 months).

 

The FLiDAR equipment will undergo regular scheduled maintenance during the operation period estimated to be 4 times a year, further notice to mariners will be issued confirming the dates and maintenance activities.

 

Following system checks onshore, the buoys will be either towed into position by a small works vessel or be deployed from a vessel through lifting of the buoys from the deck into the water. Key stages of the deployment are listed below:

1. unit delivered by road and assembled ashore;

2. unit, concrete sinker and mooring system loaded onto multipurpose vessel and taken to site;

3. concrete sinker and mooring system deployed from the vessel; and

4. unit deployed from the vessel and then attached to the mooring system.

 

Floating LiDAR Description

The floating lidar buoy is approximately 5m in length, 3m wide and 4.75m in height, with an anchor (dead man) weighing 2500kg. The system is comprised of the measurement buoy itself and a site-specific single catenary mooring.

 

Liaison and General Operational Principles

  1. The survey contractor will ensure advance notice of the installation works is provided to all marine users and the location of the buoy once installed is provided.
  2. Where considered appropriate, a Fisheries Liaison Officer will be used to provide advice during installation of the buoy and during the full deployment period of 12 months. Name: Rhys Kibble         Email:  rhys.kibble@brownmay.com          Telephone: +44 (0) 7809 337 349  

Programme

Deployment Date

From the 9th July up to 23rd July 2022 dependent on weather conditions

This date is subject to weather permitting, and therefore there may be the potential for an extension to the work duration.

Operational period

1 Year (up to 2 years from)

 

 

Safety

Lighting System

Colour: Yellow

Location: Top side of the FLS

Height of light above water: 3 metres

Flashing Intervals ODAS FI(5) 20s (range 5 nautical miles)

 

24 Hour Emergency Contact Numbers:

AKROCEAN

Mathieu DADEN +33 (0) 6 78 03 72 15

Control room VALEMO +33 (0)5 47 30 20 60

 

EMERGENCY

112 / 999 ask for the Coast Guard

VHF Channel 16

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Survey - Liverpool Bay, Irish Sea

Commencing in mid July 2022, for approximately 1 week, bathymetry and object detection survey operations will be undertaken in the Irish Sea using survey vessel 'FPV Morven' (20m LOA).

A-2-Sea Solutions Ltd will be operating the vessel 'FPV Morven' on a 24-hr basis, sailing survey lines between 4-10 knots.

 

FPV Morven be towing survey equipment upwards of 100m astern in the two survey areas (Area 393).

 

FPV Morven will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Central North Sea Electrification Project - Cable Route Survey and Habitat Assessment

Harbour Energy intend to mobilise the survey vessel m/v "Geograph" (Gardline Ltd) on ~01/08/22, to execute a cable route survey in support of future Central North Sea electrification scopes. The near shore section shall be facilitated by Titan Surveys post 15/08/2022. Survey activity will include geophysical, environmental baseline (benthic) & habitat assessment components of the offshore cable corridor, the intertidal cable corridor, the connection cable corridors and the offshore hub area.

The PfS UK cable to the CNSE Offshore Hub will be approximately 224.4 km in length extending from a landfall location by Peterhead on the Scottish coast to the offshore hub location in the Central Graben area of the North Sea. The proposed coordinates of the offshore hub and UK landfall locations are provided below.

Power from Shore UK - 210km

Easting (m)

ED50 TM0

Northing (m)

ED50 TM0

Latitude (DD)

WGS84

Longitude (DD)

WGS84

Latitude (DMS)

WGS84

Longitude (DMS)

WGS84

Latitude (DMS)

ED50

Longitude (DMS)

ED50

CNSE Hub Location

600685.04

6333603.06

57.133

1.662

57° 07' 57.810" N

01° 39' 42.643" E

57° 08' 00.164" N

01° 39' 48.218" E

Peterhead

NA

NA

57.478

-1.789

57° 28' 40.800" N

01° 47' 20.400" W

57° 28' 43.263" N

01° 47' 14.450" W

 

Planned routing is between the following platforms;

Landfall near Peterhead ref attached charting

Offshore Hub location near Shearwater

Shearwater Platform

Judy Platform

Elgin Platform

Gannet A Platform

Etap Platform

 

Ref attached chartlet and coordinate list for further details of proposed routing.

 

Please contact the undersigned for further information.

 

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Greater Britannia Area Shallow Seismic Survey Operations

Harbour Energy PLC shall be mobilising the survey vessel Ocean Reliance to conduct 3DHR & 2DHR Shallow Seismic Survey Operations within the Greater Britannia Area from approx. 11th July 2022. Campaign duration approx 22 days

Site surveys shall be conducted at;

 

Balmoral Area                 - Commencement ~ 11/07/2022 for 10 days

Callanish Manifold Area  - Commencement ~ 22/07/2022 for 7 days

Leverett Area                   - Commencement ~ 29/07/2022 for 7 Days

 

Vessel shall utilise a 1200m streamer and be restricted in ability to manouvre all vessel requested to maintain a wide berth

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Dismantling & Removal - Brae Bravo Jacket

Please be advised that the SSCV Sleipnir is expected to leave the current Brae Bravo 500m Safety Zone on 25th June 2022 following removal of the Brae Bravo upper jacket. Only the footings and cuttings piles will remain, at an elevation of approximately 28m from the seabed.

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Stena Spey (MODU) on Site (Block 15/21a)

Stena Spey on location to carry out decommissioning operations to plug and abandon the 15/21a-51 Well. The Stena Spey is expected to arrive at the 15/21a-51 Well location to carry out P&A operations and remove the well head. The work scope is planned to take approximately 30 days. The MODU will be anchored utilising prelaid anchors, with a guard vessel in place.

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Sevan Hummingbird FPSO Offstation

Sevan Hummingbird FPSO Disconnect, Tow and Mooring Line Recovery. Sevan Hummingbird FPSO is currently being disconnected from her moorings. She will be under tow Friday 24/06/22 - Wednesday 28/06/22 from her field position to Port of Nigg, Cromarty Firth. The mooring lines will be recovered from the field location starting Friday 24/06/22 for up to 14 days. The 12 Suction anchors and a portion of ground chain shall remain thereafter to be recovered later in 2022.

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BP-7 wellhead and Xmas tree

BP-7 is a new subsea oil well. The wellhead supports a Xmas tree and integrated "fishing friendly" wellhead protection structure. BP-7 is a new subsea oil well. The wellhead supports a Xmas tree and integrated wellhead protection structure. The wellhead protection structure has legs that penetrate the seabed and a ‘fishing friendly’ profile with sloping sides designed to deflect trawls and offer protection against dropped objects

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Dye Study - Shapinsay and Puldrite

Carry out dye and drogue dispersion studies at 2 Scottish Sea Farm sites located at Shapinsay Island and Puldrite

The study will involve the release of surface patches of tracer Rhodamine WT (a pink dye that disperses in seawater over a few hours) over a 12.5 hour tidal cycle. The amounts of dye used will be in accordance with the approved list and guidelines. The resulting dye patch will be monitored and tracked for around 2 hours per patch and maximum travel of the dye patch will be around 1.0km before it has dispersed beyond the limits of detection. There will be a maximum of 6 releases per site to cover the 12 hour tidal cycle. Up to 4 surface drogues with 1m sail depth will be deployed at the same time as the dye release and these are fitted with gps loggers that will record their position every few minutes. These will be allowed to drift over the same time period as the dye dispersion before retrieval. An ADCP current meter will be deployed on the seabed within the confines of the cage sites mooring grid (or lease area if no mooring grid on site)  for the duration of these studies which is likely to last <10 days. The ADCP will be marked by an unlit red surface marker buoy. Timescale for these studies is expected to be early July 2022 with an planned mob date of 4th July

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Floating LiDAR buoys & metocean buoys - Morgan & Mona

Metocean and floating LiDAR instrumentation have been successfully deployed within the Morgan and Mona project sites.

Metocean instrumentation and floating LiDAR instrumentation have been deployed within the boundary of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project sites in the Irish Sea.

 

The metocean instrumentation within the Mona and Morgan Project site were deployed successfully in November 2021. It should be noted that instrumentation is deployed on the seabed some distance from the surface buoy, so marine users are requested to maintain the safe clearance distances as outlined in Section 3 below. Further details on the mooring design are available in Section 7. Metocean instrumentation at the Mona (South) location has now been successfully redeployed and will remain on location until planned recovery approximately November 2022. As-laid coordinates have been updated for the metocean equipment, following unplanned works which were undertaken during mid-June.

 

The floating LiDAR instrumentation were successfully deployed at the Mona Project site and the Morgan project site in March 2022. It should be noted that instrumentation is deployed on the seabed some distance from the surface buoy, so marine users are requested to maintain the safe clearance distances as outlined in Section 3 below. Further details on the mooring design are available in the attached NtM. The AIS on the Mona floating LiDAR is not currently operating, but all other safety measures remain active and functional; repair of this fault is planned for early July.

 

The previous Notice to Mariners indicated that an additional mooring was planned to be deployed at the Morgan site, however this is no longer planned.

 

The equipment will be maintained in position via appropriate mooring systems and will gather metocean data to inform the proposed Project. Details of the devices and relevant Aids to navigation are provided below.

.

All vessels are requested to maintain a safe distance (500m) from the maintenance vessels (Forth Jouster, Vital or Vector) at all times. All vessels are requested to maintain a safe distance (400m) from the deployed monitoring equipment at all times.

 

Further details can be found within the attached NtM.

 

Morgan

Name: Fugro Buoy WS188

MMSI: 992351368

 Mona

 Name: Fugro Buoy WS187

 MMSI:  992351369

 Morgan

 Name: Morgan 01

 MMSI: 992351367

 Mona

 Name: Mona 01

 MMSI:  992351366

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Dogger Bank South Geophysical Site Investigation

Fugro will be undertaking geophysical and environmental site investigation on behalf of RWE Renewables within the proposed Dogger Bank South (DBS) Offshore Wind Farms array site and export cable routes.

The Fugro Frontier has commenced geophysical survey operations within the Dogger Bank South array sites which are expected to be continue until approximately the 31st October 2022. The Fugro Searcher is expected to join the Fugro Frontier within the array sites surveying from the 7th July until the 15th August 2022.

 

As the Fugro Frontier and Fugro Searcher will be towing survey equipment, vessels will require large turning circles and will be restricted in their ability to manoeuvre. All vessels operating within the array area are requested to keep their distance, maintaining at least the 1,000m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

 

Geophysical survey operations have commenced on the Export Cable Routes and being undertaken by the following vessels:

  • Fugro Discovery from the 11th June to the 20th July 2022 (15m water depth out to the array sites)
  • Valkyrie from the 14th June to the 20th July 2022 (Nearshore to 15m water depth)

The Fugro Discovery and Valkyrie operating on the export cable routes will be towing survey equipment and request that passing vessels maintain a 500m safety zone around the survey vessel.

 

Please note that the exact start and finish dates for all survey vessels will be dependent on the prevailing weather conditions and work progress.

 

Guard Vessel 'Rover Alpha' will maintain a presence along the export cable route during survey operations and can be contacted on VHF channel 16 for any project and / or fisheries related queries.

 

A continuous listening watch will be conducted on VHF Channel 16 by all survey vessels.

Survey operations will be conducted on a 24-hour basis.

 

Vessel Name Vessel Type Call Sign MMSI Number IMO
Fugro Frontier Array Survey Vessel C6BH4 311000263 9723667
Fugro Searcher Array Survey Vessel C6EI5 311000904 9504011
Fugro Discovery Offshore ECR Survey Vessel 3EKE6 372698000 9152882
Valkyrie Nearshore ECR Survey Vessel 2BWA9 235069806 n/a
Rover Alpha Guard / Scout Vessel MLAS2 235010380 n/a

 

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Rig - Valaris Viking

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris 123

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Deepsea Stavanger

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Surveys - Culzean GWA Area

Olympic Taurus – Node Handling (Call Sign: LDXA3) and Sanco Star – Source Vessel (Call Sign: ZDIT8) will will be carrying out OBN (Ocean Bottom Node) 4D Seismic Survey work. Seismic Source Volume = 3790cu.in source at 2000 psi operating pressure. Start Date = around 23rd June 2022. Sanco Star has restricted manoeuvrability, please keep 3Nm minimum CPA. Duration expected to be approx. 2 months to mid-august (but planning to be complete by end-July).

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Ocean Endeavor Rig - Pan West Well

The Ocean Endeavor rig will be drilling the Pan West Well in the Penguins fields. The will be moored with 12 anchors. Some of these anchors extend outside of the rig 500m exclusion zone.

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104 & 107D CHANNEL BEAM TRAWL SURVEY 17.07-21.07 (2/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

1.To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme. 2.To obtain fisheries independent data on the distribution and abundance of commercial flatfish species. 3.To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations. 4.To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 

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104 & 107D CHANNEL BEAM TRAWL SURVEY 17.07-21.07 (3/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

1.To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme. 2.To obtain fisheries independent data on the distribution and abundance of commercial flatfish species. 3.To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations. 4.To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 

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Cable Exposure - R100 Seg 2.03a

Please be advised that the R100 Seg 2.03a telecommunication cable has been wet stored and can be identified as a yellow surface buoy deployed at 59° 31.1880? N, 1° 32.3730? W and is unburied for approximately 5.5km along the proposed cable route.

This buoy is situated approximately 4km east of Fair Isle and consists of a yellow CRP600 buoy with radar reflector and 20m buoy tail c/w 10x polyform floats.  The removal of this buoy will be dependent on weather however it is likely to be removed within 1-2 weeks. Vessels should maintain a distance of at least ¼ NM from the deployed cable bouy. Please distribute this information accordingly so that other sea users are aware.  

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CHANNEL BEAM TRAWL SURVEY 104 & 107D (3/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

  1. To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme.
  2. To obtain fisheries independent data on the distribution and abundance of commercial flatfish species.
  3. To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations.
  4. To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 
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104 & 107D CHANNEL BEAM TRAWL SURVEY 17.07-21.07 (1/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

1.To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme. 2.To obtain fisheries independent data on the distribution and abundance of commercial flatfish species. 3.To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations. 4.To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 

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Geotechnical Survey - Hornsea Three

Mariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of Geotechnical survey works from the 2nd of July 2022. The survey is being undertaken for the purposes of geotechnical investigations of the Hornsea Project Three Offshore Wind Farm (Hornsea Three) project, located within the UK Sector of the North Sea, off the coast of East Yorkshire.

Please be advised that the operations are anticipated to mobilise from the 2nd  of July 2022 with investigations targeting the site.  The works will last for approximately 50 days .  The exact survey dates are dependent on mobilisation time, weather and work progress.

 

Note that the vessels will have limited manoeuvrability and it is requested that all vessels operating near the survey vessels maintain a safe distance (at least 500m) and pass at minimum speed.

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CHANNEL BEAM TRAWL SURVEY 104 & 107D (2/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

  1. To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme.
  2. To obtain fisheries independent data on the distribution and abundance of commercial flatfish species.
  3. To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations.
  4. To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 
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CHANNEL BEAM TRAWL SURVEY 104 & 107D (1/3)

To carry out a beam trawl survey in the eastern Channel and southern North Sea using 1 x 4m beam trawl.

AIMS: PRIMARY AIMS:

  1. To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme.
  2. To obtain fisheries independent data on the distribution and abundance of commercial flatfish species.
  3. To collect biological data, including maturity and weight at age of commercial species, to satisfy the requirements of the EU data regulations.
  4. To identify the epibenthos by catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group. 
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Summer Vessel Traffic Survey - Morgan & Mona

A marine vessel traffic survey is due to be undertaken for the proposed Morgan and Mona Offshore Wind Farm project. The survey will be undertaken from one survey vessel, MORNING STAR, and will involve the collection of data of detected vessels and marine users through use of onboard radar, AIS and visual survey methods.

The survey will collect data within the two proposed main offshore bidding areas for the Morgan and Mona projects within which the array for each project will be located. The extent of the areas in which the survey vessel may be located during the survey are shown in Figure 1 and Figure 2 of the attached NtM with accompanying coordinates. The survey vessel will roam and/or remain nominally static within the Morgan and Mona project areas for approximately 28 days (14 days in each area) depending on weather conditions. Dates may be subject to change. The survey vessel will operate on a 24hr basis and display appropriate day shapes (mast head signals visually indicating the status of a vessel to other vessels on navigable waters during daylight hours) and lights at all times during operations.

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Platform Navaids Maintenance - Shearwater

The Shearwater platform will be undergoing a period of maintenance/changeout of the Navaids from 10th June to 8th July. There will be periods of reduced Navaid operations. This has been approved in an updated Consent to Locate.

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Shallow Burial - East Anglia One Inter Array Cable

East Anglia ONE Offshore Windfarm request all vessels to strictly follow a 250m exclusion zone around EA1 Inter Array Cable between WTG B10 and WTG B09 when dropping anchor or using fishing equipment in the following areas due to shallow burial.

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Cable Installation - Notice to Mariners for Iceni and Mercator subsea cable systems

Cable Installation operations will be undertaken on the route of the Iceni system between Winterton, UK to Callantsoog, Netherlands. The works will be undertaken between 15 June and 14 August 2022. Cable Installation operations will be undertaken on the route of the Mercator system between Joss Bay, UK to Ostend, Belgium. The works will be undertaken between 20 June and 16 August 2022.

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Exposed Subsea Cable Position - Lowestoft Southern Approaches

Mariners and Port-Users are advised that the single orange marker buoy deployed at a section of subsea cable off Pakefield detailed in the previous NTM No. 24-2022, has now been removed. The subsea cable is still exposed along the route as shown in the below chart / table. Fishing, dredging, anchoring and all other sea bed activities are prohibited 500m North & South of this line/route. The guard vessels Shannon and CRC Loadstar are currently in the vicinity and are monitoring VHF ch 14 and 16

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Deployment of Marker Buoys - Killowen Bank

Installation of 4 Special navigation markers at Killowen Bank to mark mussel Seed harvesting equipment. Type of Aid Beacon two outermost buoys (Lit) Yellow FL.Y5s Top mark X

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Survey - Anglia Field (Ref: 1414)

A 10 Day Survey using the vessel VOS Star call sign: PDCT between 17th June 2022 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
ROVCO

VOS Star

PDCT

N/A

17/06/2022 - 31/07/2022

For 10 Days

48

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Survey - Moray Offshore Windfarm (West)

Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out geophysical site investigations from a survey vessel at the Moray West Offshore Wind Farm Export Cable Corridor close to shore. Whilst the Moray West wind farm site located on the Smith Bank in the Outer Moray Firth, approximately 22.5km from the Caithness coastline, the shore end of the export cable routes is close to the town of Portsoy. From 14th June until 12th July using the vessel Titan Discovery call sign: 2HCR3.

The works are anticipated to commence on, and no earlier than, 14th June 2022, and survey duration is expected to be approximately 3-4 weeks. Geophysical surveys are forecasted to be completed by 12 July 2022, but the exact survey duration and completion date will depend on weather and progress of the works.
 

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Rig - Maersk Reacher

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Resilient

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Geotechnical Survey - Morgan and Mona Offshore Wind Farm

The offshore geotechnical survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project array areas will commence on the 14 June 2022 and 19 June 2022.

The offshore geotechnical survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project array areas will commence on the 14 June 2022. The investigation involves the drilling, sampling and coring of 30 boreholes throughout the two proposed areas, utilising the vessel Fugro Synergy. The vessel will be stationary at each borehole location for up to 3 days to allow the samples and cores to be taken from the seabed.

 

In addition to the above, further offshore geotechnical survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project array areas will commence on the 19 June 2022. The investigation involves acquiring up to 120 Cone Penetration Tests (CPTs) (deep push) throughout the two proposed areas, utilising the vessel Normand Mermaid. The vessel will be stationary at each CPT location for up to 6 hours to allow the samples to be taken from the seabed.

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Dogger Bank A,B&C UXO Inspection Campaign

The Offshore Supply Vessel, KAMARA, will perform UXO Inspection operations within Dogger Bank A and Dogger Bank B Array construction areas and the DBC nearshore area.

The works will be performed in a single campaign, commencing on the 20th of June 2022 and continuing until approximately 31st August 2022. The works will be continuous, 24 hours a day. Charts of the DBA / DBB Array and DBC Nearshore areas including are provided below. The operations include the inspection of potential subsea Unexploded Ordnance (UXO) objects by means of a work class ROV (WROV).

 

During operations, the Kamara will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

 

It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Offshore Supply Vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

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New Fishing Restriction: The Canyons MCZ 2022

A person must not use bottom towed fishing gear or anchored nets or lines in the specified area. A vessel transiting through the specified area must have all bottom towed fishing gear and anchored nets or lines inboard, lashed and stowed. Permit conditions may apply. Fishing gear types are to be used as a guide only and fishers should refer to the specific legislation. Measures have been added to www.kingfisherRestrictions.org Please see the link below in the 'Full Notice'.

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New Fishing Restriction: South Dorset MCZ 2022

A person must not use bottom towed fishing gear in the specified area. A vessel transiting through the specified area must have all bottom towed fishing gear inboard, lashed and stowed. Permit conditions may apply. Fishing gear types are to be used as a guide only and fishers should refer to the specific legislation. Measures have been added to www.kingfisherRestrictions.org. Please see the link below in the 'Full Notice'.

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New Fishing Restriction: Dogger Bank SAC 2022

A person must not use bottom towed fishing gear in the specified area. A vessel transiting through the specified area must have all bottom towed fishing gear inboard, lashed and stowed. Permit conditions may apply. Fishing gear types are to be used as a guide only and fishers should refer to the specific legislation. Measures have been added to www.kingfisherRestrictions.org. Please see the link below in the 'Full Notice'.

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New Fishing Restriction: Inner Dowsing Race Bank and North Ridge SAC 2022 - Towed Gear

A person must not use bottom towed fishing gear in a specified area of reef or a specified area of sandbank.A vessel transiting through a specified area of reef or a specified area of sandbank must have all bottom towed fishing gear inboard, lashed and stowed. Permit conditions may apply.Fishing gear types are to be used as a guide only and fishers should refer to the specific legislation.Measures have been added to www.kingfisherRestrictions.org. Please see the link below in the 'Full Notice'.

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New Fishing Restriction: Inner Dowsing Race Bank and North Ridge SAC 2022 - Static Gear

A person must not use static fishing gear in a specified area of reef. A vessel transiting through a specified area of reef must have all static fishing gear inboard, lashed and stowed. Permit conditions may apply. Fishing gear types are to be used as a guide only and fishers should refer to the specific legislation. Measures have been added to www.kingfisherrestrictions.org. Please see the link below in the 'Full Notice'.

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Foinaven FPSO Transit from station West of Shetland to Hunterston Port

The Foinaven FPSO will be transiting from it's station West of Shetland to Hunterston Port for redelivery to owner on the 15th of August and arriving at Hunterston Port on the 20th of August.  These dates are subject to change due to weather windows etc. which will be updated if they change.

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Paul B. Loyd Jr (PBLJ) MODU on Site (Block 3/24c)

PBLJ on location to carry out exploration drilling. The PBLJ is expected to arrive at North Eigg (Block 3/24c -NE1) to carry out exploration drilling . The work scope is planned to take approximately 4 months. The MODU will be anchored utilising prelaid anchors.

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Anchor Pre Lay - N.Eigg

Pre-lay of anchors at North Eigg (24/3c) An anchor handling vessel will be mobilised to Block 24/3c to pre-lay anchors and anchor chains prior to the arrival of the drilling rig. Chain ends will be marked with anchor buoys. Once a the pre-lay activity is complete a Guard Vessel will be remain onsite until the arrival of the drilling rig. Schematic of anchor and anchor chain end buoy locations attached. 

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2 x Metocean Buoy Deployments Blyth Met Mast – Floating Lidar Buoy Validation

Partrac are to deploy two Floating LiDAR FLS200 buoys (E03 and E13) at two locations , in close proximity to the ORE Catapult Blyth Met Mast. Once deployed, please maintain a 500m exclusion around each buoy. Deployment is expected to be carried out over one day from 22nd June 2022. The FLS200 buoys will be towed to the site by the vessel Tees Guardian. The two Floating LiDAR buoys will deployed under Marine Licence L/2020/00313/1.

METOCEAN BUOY

 

The metocean buoys record meteorological data and are anchored to the seabed by means of a mooring chain and a ground weight. The buoy has dimensions of 4m x 4m, and when deployed the tallest mast on the buoy sits approx. 4m above the water line.

 

The surface buoys will include: A day shape of yellow St Andrews Cross; radar reflector; and yellow navigation light.  The light will have a flash sequence 5Fl(20s).

 

VESSEL – TEES GUARDIAN

Call sign            2IJH2

IMO number      9759783

MMSI number    235110227

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Outfall Scour - Jarrow Staithes

The construction of an outfall scour below MHWS adjacent (just east of) Jarrow Staithes as part of a river water abstraction/discharge process to create energy for a district heating installation. The work will involve construction plant above MHWS, with workers on foot then assisting the positioning.

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Rig - Island Innovator

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Scarabeo 8

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Swift 10

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Resolute

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Bridge Construction between Staithes and Riverbank

The construction of a bridge between the existing staithes at Jarrow and the riverbank as part of a river water abstraction process to create energy for a district heating installation. Abstraction Bridge Construction – programmed to commence Monday 13th June 2022 subject to obtaining of transport permits for the delivery of the bridge to site, and then to continue for a further period of 10 weeks.

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Umbilical Trenching Operations - Forvie

Due to a delay the trenching work between the locations noted below will now be undertaken on 1st June 2022 with a planned duration of 10 Days. 7/6/22: Further Delayed until mid July.

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Mull – Coll Subsea Cable Installation

Mull – Coll: The project is experiencing significant delays for offshore cable install and no fishing gear clearance is required until further notice. The previous Notice to Mariners, dated 28th March 2022, is now cancelled. Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mull-Coll submarine electricity cable. The purpose of this notice is to outline the working area for the vessels along the cable lay route.

Mull – Coll: The project is experiencing significant delays for offshore cable install and no fishing gear clearance is required until further notice. The previous Notice to Mariners, dated 28th March 2022, is now cancelled. 

 

 

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mull-Coll submarine electricity cable. The purpose of this notice is to outline the working area for the vessels along the cable lay route. There will be two vessels associated with the Mull-Coll cable installation and post-lay survey process. In summary:

1. Boulder Relocation – Global Symphony (entire route)

2. Cable Lay Vessel – Global Symphony (entire route)

3. Post-Lay Inspection Burial (PLIB): Global Symphony (entire route)

4. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times.

 

Description of Installation/PLIB Operations CLV Global Symphony will be relocating boulders in preparation for cable lay operations and will then lay the Mull to Coll cable. The PLIB operations will be carried out by the Global Symphony immediately after completion of cable lay operations. The nearshore sections of the marine cables will be surveyed using the Delta 9151 (or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed. The duration of the operations is shown on Table 1. All vessels will be limited in maneuverability. Other vessels should maintain an appropriate and safe distance of 500m when passing the vessels undertaking cable operations and should pass at the lowest speed to avoid vessel wash effects. The vessel will be working 24 hours per day during these operations.

 

 

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Geotechnical Survey - Berwick Bank Windfarm

SSE Renewables will be undertaking a geotechnical survey within the Berwick Bank Wind Farm and export cable route area. The survey is planned to mobilise between 15 -20 June 2022 for a duration of up to 2 months dependent on weather and downtime. Please note that SSE Renewables are not expecting fishermen to relocate gear - on this occasion the vessel(s) will work around any gear on location. A scouting/guard vessel will operate ahead of the survey vessel to ensure that this can be achieved.

The survey work is being undertaken by GEO and will be conducted from the vessel Northern Ocean. The scouting/guard vessel will be the Artemis.

 

The scope of work within the main array area will comprise approximately 100 seabed CPTs to a maximum depth of 30 m below the seafloor (bsf) and approximately 100 co-located vibrocores to a maximum depth of 6 m bsf. The scope of work along the export cable route will comprise approximately 80 seabed CPTs and 80 co-located vibrocores to a maximum depth of 6 m bsf.

 

During the survey campaign, the vessel(s) will be deploying underwater equipment to gather cores and also assess the geology in the area. As a consequence of equipment being deployed and the modes of operation, all mariners are advised to keep a safe clearance distance of no less than 500 m from the vessel(s).

 

For vessel and contact information, please see the attached Notice to Mariners document provided with this notice. 

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Cable Repair - Gwynt Y Mor Export Cable

Vessel change: The Forth Warrior has replaced the Forth Jouster. Please be advised of this notice advising mariners of the Gwynt Y Mor export cable repair. Work on site will be from 27/05/22 in the Gwynt Y Mor export cable corridor for approximately 55 days subject to weather. A barge, the NP459, will be assisted by two anchor handlers, Sea Bravo and Forth Warrior, to carry out a cable repair. Zwerver III and a crew transfer vessel, Mareel Scarlet, will support these operations.

Nature of Operations

Concrete mattresses will be installed on Rhyl Flats cable crossing by the NP459. A cable repair will follow, executed by the NP459. The NP459 will be operating on an eight anchor mooring plan during cable lay and recovery operations.

 

The Sea Bravo and Forth Warrior will be anchor handling in support of the NP459.

 

The Zwerver III will be carrying out de-burial/burial operations before installing post cable lay concrete mattresses at Rhyl Flats cable crossing. 

 

The Mareel Scarlet CTV will support operations.

 

The work will be carried out in the cable corridor route as shown in figure 1. We kindly ask that all vessels in the local vicinity observe at least 1000m stand off from the NP459 at all times and a 500m stand off from the other vessels involved in the work scope.

 

During the works, the vessels will display the lights and signals relevant to the operations and will be monitoring VHF Channels 16 and 12.

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Subsea preparation work - New temporary precautionary areas.

Equinor will conduct subsea construction work at the tie-in areas for the new oil export pipeline which will be installed between Gina Krog and Sleipner A. The affected areas are located east of Gina Krog and north of Sleipner A.

Subsea preparation work at areas for tie-in of new pipeline section between Gina Krog and Sleipner A.

New temporary precautionary areas.

 

Between 20.06.2022 and 15.08.2022, Equinor will conduct subsea construction work at the tie-in areas for the new oil export pipeline which will be installed between Gina Krog and Sleipner A. The affected areas are located east of Gina Krog and north of Sleipner A.

 

The new pipeline will be designed to be overtrawlable when in operation, but trawl / bottom fishing activities near these construction areas must be avoided during parts of the construction period. Equinor will therefore establish temporary precaution areas at these locations which will be surveilled to prevent damages to fishing equipment and subsea infrastructure.

 

The zones have a radius of 500 m with centre as given in the table below.      

 

Positions (WGS84) of temporary precautionary areas / surveillance zones at the tie-in locations

 

Location

Latitude

Longitude

Gina Krog tie-in area

58° 34.349’ N

1° 42.524’ E

Sleipner Øst tie-in area

58° 23.735’ N

1° 54.962’ E

 

Sleipner Øst tie-in area will be overtrawlable after August 2023

Gina Krog tie-in area will be overtrawlable after October 2024

 

Questions can be directed to Equinor Marin:

+47 55 14 32 78, opcse@equinor.com, or VHF ch 14.

 

Vessels which will be involved in marine construction activities at the temporary precautionary areas

Vessel name

Activity

Period

Apache II

Subsea construction work – preparations of tie-in locations

July 2022

 

 

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Survey - Hornsea Three Offshore Wind Farm

Mariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of Geotechnical survey works from the 15th of June 2022. The survey is being undertaken for the purposes of geotechnical investigations of the Hornsea Project Three Offshore Wind Farm (Hornsea Three) project, located within the UK Sector of the North Sea, off the coast of East Yorkshire

Please be advised that the operations are anticipated to mobilise from the 15th of June 2022 with investigations targeting the site.  The works will last for approximately 91 days .  The exact survey dates are dependent on mobilisation time, weather and work progress.

 

Note that the vessels will have limited manoeuvrability and it is requested that all vessels operating near the survey vessels maintain a safe distance (at least 500m) and pass at minimum speed.

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Landfall Works at Boygrift - Viking Link Project

Mariners are advised about landfall works at Boygrift, Lincolnshire (English Landfall) being undertaken for the Viking Link project which is an HVDC electricity transmission interconnector between Denmark and England, a joint venture between National Grid and Energinet. The cable landfall works include cable burial work, diving operations and soil reinstatement with expected completion in UK waters by the end of August 2022.

The marine landfall works area is shown. Currently round Norwegian marker buoys are marking areas where spoil is temporarily left in place and poses a hazard to navigation.


The works will be managed by Prysmian PowerLink and operations will resume from August 2022. In the meantime, a dedicated guard vessel will be in position to guard the area at the landfall up to approx. 1km from the shore. 

 

Vessels are requested to pass at a safe speed and distance and fishing vessels are advised to remain a safe distance, approximately 1000m from the areas identified. Dive works will be ongoing and during the works the vessel will have restricted manoeuvrability as it completes its work scope.


The Communication between the vessels will be through CH67 & 72.


VHF CH 16 will be monitored at all times and will be used to contact the coastguard in the event of an emergency
 

 

 

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PrePARED Fish Tracking Array - Beatrice and Moray East Offshore Windfarms

Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works. PrePARED is a collaborative research project coordinated by MSS which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms. Deployed: 10 April 2022. Removed: 30 August 2026.

Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works. PrePARED is a collaborative research project coordinated by Marine Scotland Science which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms. The moorings hold research equipment that support hydrophone receivers. These receivers log the presence of fish, such as Cod, Haddock and Whiting which will be tagged with acoustic ID transmitter tag s (they will also record salmon and seatrout smolts migrating from Moray Firth Rivers tagged by the Atlantic Salmon Trust (AST) should they pass within range).

 

The moorings will be deployed from the 10th of April 2022 by a the Waterfall operated by Moray First Marine. The moorings will be removed by the 30th of August 2026.

 

Acoustic fish tracking moorings will not be surface marked and will be located on the seabed. The array moorings will extend vertically no more than 4 metres. The moorings will be serviced by boat, using the inbuilt acoustic recovery system. In the unlikely event of failure in the acoustic release system an ROV will be used from the same boat to service the mooring. Please note the acoustic fish tracking moorings are being deployed as close to the wind turbine generators as possible to minimise interference with fishing operations (50m), should these be accidently caught only the instruments are required to be returned and the location of the discarded weight should be supplied to MSS for recovery later.

 

Fish capture traps and timed-release cages (8 traps and cages in total) will be deployed in Moray East and Beatrice sites. These traps and cages will be used in the capture and managed release of fish needed for internal electronic tagging with acoustic ID transmitter tags. Traps and cages will be present at Moray East and Beatrice for up to 10 days commencing 13th of April. Traps and cages will move at 1 to 2-day intervals. All traps and cages will be marked with creel style floats and clearly marked “Marine Scotland Science” and be marked with an AIS beacon (visible as MARLAB 1 – MARLAB 8). Traps and cages will be at least 100 metres from turbine locations. Locations of traps and cages will be notified to the relevant windfarm Marine Control Centre as appropriate.

 

Contact details

 

All enquiries should be made to the Marine Scotland acoustics mailbox acoustics@scotland.gsi.gov.uk) marked for the attention of Robert Main. Switch Board Tel: 0131 244 2500

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Shallow Burial - Amitie Cable System

Alcatel Submarine Networks UK Ltd (ASN) was contracted to carry out construction activities for the AMITIÉ cable system. The AMITIÉ cable system spans nearly 6,600 km in total with the UK landing point in Widemouth Bay, near Bude, Cornwall. Shallow burial areas and short sections of surface laid/exposed cable in UK territorial waters. The areas of shallow burial and surface laid cable are due to hard ground or rock, where cable burial to the target depth was not possible.

The construction activities in the area shown were completed nearshore on 7th July 2021 using the vessel “Viking Energy”, and offshore on 24th August 2021 using the vessel “Ile de Brehat”. Post-lay inspection and burial (PLIB) works were completed on 29th November 2021 using the vessel “Ile d’Aix”.


This notice is issued to inform of as-laid shallow burial areas and short sections of surface laid/exposed cable in UK territorial waters. The areas of shallow burial and surface laid cable are due to hard ground or rock, where cable burial to the target depth was not possible. No further burial or protection works are planned for the AMITIÉ cable at this time.


It is requested that all vessels operating in this area keep their distance and avoid any works near the cable position. In view of the serious consequences resulting from damage to submarine cables, vessel operators should take special care when anchoring, fishing, mining, dredging, or engaging in underwater operations near areas where these cables may exist or have been reported to exist. In order to minimize the risk of such damage as much as possible, vessels should avoid any such activity at a minimum distance of 0.25 nautical mile, on either side of submarine cables.
 

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Drilling Operations - Central North Sea 22/11b

Capricorn are the license Holder for License P2379 in the Central North Sea, approximately 174km East of Aberdeen. On the 16th of May, we are planning to begin exploration drilling activities within UKCS block 22/11b (please see location map below). Drilling operations are planned to take 72 days (dry hole case) and 102 days (success case). However, permits have been requested until the 30th of November 2022 to account for any unforeseen delays.

Please also note that the start date of the 16th of May is subject to our drilling rig finishing its current operations as planned and this date may slip. 

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Exercise Freya - Lamba Ness, Unst, Shetland

SaxaVord Spaceport will be conducting a training exercise at Lamba Ness, Unst, Shetland. The exercise will culminate in the launch and recovery of a small rocket. From 6th - 8th July 2022.

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Beach Management Works - Saltfleet to Gibraltar Point

Van Oord and the Environment Agency would like to inform mariners that the Saltfleet to Gibraltar Point Beach Management Works are due to commence on or around the 30th of May 2022 along the North East Lincolnshire Coastline. These works involve the dredging of sand from licenced dredging areas and pumping the sand via a sinkerline onto various beach locations at high tide intervals. The format of works is the same as in previous years.

Lincshore Beach Management Outline Planning 2022

Start Date 30th May commence installation of the sinker Line from the Wollabank beach (date flexible around weather conditions)
Dredging Start 6th June Dredge operations to commence
Duration Approximately 6 to 8 Weeks depending on the weather. This includes mobilisation and demobilisation of project equipment.
Vessels (TBC) ‘HAM 316’ Dredger plus supporting multicats –and crew transfer vessel

 

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Exposed and Free Span - Greater Gabbard Offshore Wind Farm

Results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.

Please find attached a chart showing the results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.

 

The exposed/shallow burial areas are shown as the coloured dots on the cable route highlighted in a black box.  Equitix (Greater Gabbard OFTO) have asked that all Fishermen operate with caution when fishing anywhere on the cable route and particularly the areas that are shallow buried around KP10.’

 

Coordinates of exposed/shallow burial areas are shown on the attached chart.

 

The OFTO is updating its risk assessments to determine the extent of remedial measures that may be required. Equitix intend to provide an update on remediation after the risk assessment exercise is complete.’

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Rig - Safe Caledonia

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Noble Sam Turner

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Seabed instrumentation frame deployments - South Stack Irish Sea

A seabed instrumentation frame with associated ground line and clump weight is deployed and will be recovered in a suitable weather / tidal window. The ballasted frame weighs around 370kg, measures approximately 1.5m x 1.5m x 1.5m and is connected to a 100kg clump weight and remotely actuated pop-up buoy via a 100m wire ground line. Note: two frames were deployed initially, but one of these has been recovered already.

Inside the Morlais demonstration zone the frame sits on the seabed in more than 30m of water, with no surface infrastructure such as buoys or markers. Vessels will be able to pass safely through the area and above the frames. Use of static or mobile benthic fishing gear in the immediate area should be avoided to avoid the risk of snagging.

 

The position listed here is as deployed.

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Seabed instrumentation frame deployment - Yell Sound

A seabed instrumentation frame has been temporarily deployed in Yell Sound and will be recovered in a suitable weather / tidal window. The ballasted instrumentation frame weighs around 370kg, measures approximately 1.5m high x 1.5m wide x 1.5m long  and is connected to a 100kg clump weight via a 100m wire ground line.

The frame sits on the seabed in water of at least 35m depth, with no surface infrastructure such as buoys or markers. Vessels will be able to pass safely through the area and above the frame. Use of static or mobile benthic fishing gear in the immediate area should be avoided to avoid the risk of snagging.

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Well Suspension Activity - Foinaven Field

As part of well suspension activity in the Foinaven Field, five transponders are to be placed on the seabed on a temporary basis. Block 204/19, 204/24 and 204/25. Total seabed footprint of 20m2. 

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Rampion Wind Farm Component Exchange: June 2022

RWE Renewables UK Wind Ltd at Rampion windfarm would like to inform mariners that we are carrying out essential maintenance on the wind turbines. This work is due to commence on 10th June 2022 within the Rampion OWF Area, depending on weather.

RWE Renewables UK Wind Ltd at Rampion windfarm would like to inform mariners that we are carrying out essential maintenance on the wind turbines.

 

This work is due to commence on 10th June 2022 within the Rampion OWF Area, depending on weather.

 

The works involve; Using a jack up vessel to exchange large components in the nacelle of the turbine at L04, F06 & G11 location using the vessel crane.

 

The current outline planning is as follows:

 

Start Date: 10th June 2022

 

Vessel Name: Ziton Wind Server

The vessel will require a 200m exclusion Zone from their location at L04, F06, G11.

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Survey - Christian/Bligh Site Survey

A 10 Day Site Survey at the Christian/Bligh Field using vessel Geo Ocean V call sign: LXGV between 1st June 2022 - 30th November 2022.

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Survey - Greenwell Site Survey

A 12 Day Site Survey at the Greenwell Field using vessel Geo Ocean V call sign: LXGV between 1st June 2022 - 30th November 2022.

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Rig Move - Deepsea Atlantic

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Marine Aggregate Industry Survey Notification - South Coast Region

A geophysical and grab survey will be conducted in the regions attached to this notice during May and July 2022.

Please be advised that from 10 May 2022 the South Coast Dredging Association will be undertaking a geophysical and seabed sampling surveys along the South Coast region within the areas shown in the charts. The surveys will employ hull-mounted multibeam echo sounder and towed sidescan sonar systems to acquire seabed data and a Hamon grab and / or a seabed video system to acquired seabed samples.

 

The geophysical works will be completed by personnel from GeoXYZ on the Geo Ocean IV. The seabed sampling works will be completed by personnel from Eco Marine Consultants on the Aquatech Surveyor. Vessel details are presented in Table 1 below. The work is expected to take approximately 6 to 8 weeks in suitable weather conditions, although adverse weather conditions may mean that the total estimated survey time is spread over a longer period.

 

This notification is intended for circulation to all interested parties undertaking activities in the vicinity of the planned survey works.  Further details regarding the surveys can be obtained by contacting either the Liaison Programme Coordinator or the Fishing Liaison Representative using the contact details at the head of this communication.

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New proposed Active Dredge Zone on area 473/1 and 473/2

The Active Area available to be dredged is being extended to allow the dredging companies to maximise their productivity at the site. The Active Area at Licence 473/1 and 473/2 is being extended to the limits of the licence area and extent of the 2020 surveys.

Details are presented within the attached doucment and on the charts shown with this notice.

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Wave data buoy - Clift Sound

Deployment of an AquaNode Wave Buoy, moored with a block on the seabed with a mooring swing radius of <200m about the location given. Colour: Bright Yellow Markings: High-visibility reflective tape, marked 'SURVEY' Dimensions: 75cm Ø x 39cm. Deployment Start 30 April 2022. Deployment End 31 October 2023.

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Geophysical Survey - Triton Knoll

A-2-Sea Solutions will be carrying out a geophysical and environmental survey of the Triton Knoll infrastructure including WTG's, array cables and export cables.

Geophysical survey operations involving hull mounted multibeam echosounder and towed side scan sonar (SSS) of the Triton Knoll wind farm assets will commence in mid-June from the vessel Cerys Line (27m LOA).

 

The SSS will be towed up to 150m astern. A wide berth is requested at all times as the vessel will be restricted in her manoeuvrability. 

 

Environmental survey operations will commence in early-mid July, following completion of the geophysical survey.

 

Drop down video and sediment grab samplers will be deployed from the stern of the vessel, restricting manoeuvrability.

 

Cerys Line will exhibit lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Survey - Finlaggen Site Survey (Ref: 1402)

A 8 Day Site Survey at Finlaggen using vessel Geo Ocean V call sign: LXGV between 27th May 2022 - 30th November 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

GEOxyz Offshore

Geo Ocean V

LXGV

N/A

27/05/2022 - 30/11/2022

For 8 Days

21, 15

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Rig - Maersk Integrator

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Exposed power cable in free-span (up to 2 metres off the seabed)

A recent survey has detected a 17m long cable suspension (free-span), that is up to 2 metres high, on the BritNed Interconnector HVDC cable. This poses the risk of entrapment of trawling gear; all vessels fishing are advised to keep well clear. At its maximum height, the suspension is in the order of 1.5 - 2m clear of the seabed. BritNed are actively looking at remedial options, but in the meantime all fishing vessels are advised to give this location a wide berth.

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Survey - West of Shetlands

A 3 month Survey using vessels Subsea Viking, Veritas Viking, Artemis Odyssey, Marianne-G between 1st June 2022 - 30th September 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

PXGeo

Subsea Viking

Veritas Viking

Artemis Odyssey

Marianne-G

N/A

01/05/2022 - 01/08/2022 for 28 Days

Q204/20, 204/15, 204/18, Q204/19, Q204/24, Q204/25, Q205/16, Q205/21

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Survey - Former Guinevere Platform 48/17-Post Decom (Ref: 1408)

A 28 Former Guinevere Platform 48/17-Post Decom between 1st June - 31st October 2022

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Perenco UK Limited

TBA

N/A

01/06/2022 - 31/10/2022

For 28 Days

48

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Survey - Callanish Site Survey (Ref: 1399)

A 15 Day Site Survey at Callanish using vessel Ocean Reliance call sign: HP6391 between 1st June 2022 - 30th September 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

Ocean Reliance

HP6391

N/A

01/06/2022 - 30/09/2022

For 15 Days

15, 21

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Survey - Offshore Pipelines & wells (Ref: 1396)

A 31 Day Offshore Pipelines & Wells Survey using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis Subsea Services Ltd

Aberdeen (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 31 Days

48, 52

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Survey - Hewett Pipelines (Ref: 1398)

A 5 Day EBS & Habitat Assessment along Hewett Pipelines using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 5 Days

48, 52

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Survey - Nearshore Pipeline Inspection PL20 & PL21 (Ref: 1397)

A 5 Day Nearshore Pipeline Inspection PL20 & PL21 using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 5 Days

48, 52

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Survey - Site Survey Well 15/21a-51 (Ref: 1380)

A 5 Day Site Survey Well 15/21a-51 using vessel Noordhoek Pathfinder call sign: PBYN between 18th April 2022 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
N-Sea

Noordhoek Pathfinder

PBYN

N/A

18/04/2022 - 31/07/2022

For 5 Days

15

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Deployment of Buoys - Beryl SPM-3

Apache have installed to two cardinal buoys at the following locations. It would be appreciated to advise if any other stakeholder should be inform of the installation.

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Diver Works Noss Head - Shetland HVDC HDD

Scottish Hydro Electric Transmission Plc, as part of the Shetland HVDC Link Project will be undertaking diving operations at Noss Head. The works will commence on the 8th of June and are located approximately 400m offshore in around 19m of water.

 Scottish Hydro Electric Transmission Plc, will be undertaking diving operations at Noss Head to assist with cable pull-in for the Shetland HVDC Link. The works are located approximately 400m offshore in around 19m of water.

 

The Shetland HVDC link is a critical electricity transmission link and will form part of the electrical transmission grid that is essential to the transport of renewable energy between the locations where it is generated and areas of demand, and the delivery of both Scotland’s and the United Kingdom’s 2030 climate change targets.

 

Three Horizontal Directional Drilled (HDD) ducts were installed at the site in 2021. These ducts are currently protruding from the seabed. Diving operations are planned to be undertaken at the protruding duct locations between the 8th June 2022 and 6th of  August 2022 to assist with cable pull-in. A wider area, referred to as the ‘Mooring Area’, is the area in which the diving and cable pull-in operations will take place.   

 

Vessels are required to maintain a safe distance from the ‘Mooring Area’ until the estimated completion date of 09 August 2022.

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Rig - West Phoenix

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - West Linus

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Well Operations - Orlando 3/3b-13Y

PFML are due to conduct well intervention operations at the Orlando 3/3b-13Y well using the Island Innovator rig, pre-lay of 8 anchor mooring spread commencing 20th May 2022. Guard vessel is on location prior to the MODUs arrival in early June 2022 (provisionally 12-60 days post pre-lay operations). Stevpris MK VI anchor type and maximum of 2,680m of chain/fibre rope/wire per anchor.

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Geophysical survey- North Sea, Norway

The vessel Northern Storm will perform geophysical survey in the Norwegian part of the North Sea. Please be advised that the vessel will have limited maneuverability. Towed- and hullmounted equipment will be used. The survey will be performed between 26th of May and the 30th of August 2022. The aim of the survey is depth mapping on behalf of Norwegian Hydrographic Service and Kartverket.

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Dogger Bank A Boundary Buoy Installation - as installed locations

The Trinity House Buoy Installation Vessel, Galatea, has installed the Dogger Bank A boundary Demarcation Buoys in the Southern North Sea.

The 17 construction boundary demarcation buoys will remain in location until the windfarm construction activities have been completed and handed over to the Operations and Maintenance teams.

 

Once the permanent Aids to Navigation (AtoN) have been installed on the WTGs, Trinity House will approve the permanent AtoN and the boundary buoys will be removed.

 

If anyone finds a buoy that is off station or encounters a buoy location where it is not functioning or is missing, they should report this to the Dogger Bank Duty Marine Coordinator as soon as possible.

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R100 Telecom Cable Installation

Global Marine will be conducting the installation of the R100 telecommunications cables on behalf of British Telecommunications plc between May and September 2022. Timings are dependent upon weather and other operational conditions. Works will utilise the C S Sovereign and Normand Clipper vessels.

 

The vessels will be limited in manoeuvrability therefore, vessels working in the area should proceed with caution within 1NM from the cable ship during operations and all activity should remain clear 250m either side of the vessel, 500m corridor in total.

 

For a further breakdown of operations, please don't hesitate to get in touch.

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COSL Pioneer MODU - Captain Field

COSLPioneer MODU will be drilling in the Captain field for Ithaca Energy for approximately 128 days, with the anchors being pre-laid approximately two to four weeks prior to the rig arriving onsite. Activity will take place from 16th May until 14th November 2022.

Ithaca Energy (UK) Ltd is planning to use the COSLPioneer to drill UB05P well and suspend A2Y at Captain Drill Centre C.  The activity will last approximately 150 days (including anchor pre-lay).  The Captain platform ERRV will act as a guard vessel at the location from when the anchors are pre-laid until the COSLPioneer arrives.

The field lies within the United Kingdom Continental Shelf (UKCS) Block 13/22a, approximately 91 km North of Aberdeen and 191 km from the UK/Norway median line.

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Anchor Pre-Lay at Ettrick Location

Normand Prosper AHV to pre-lay 8x anchors at Ettrick Location. 8x anchors will be laid in the Ettrick field, prior to rig mobilisation forecast for 14th May. 8x anchors will remain laid for Ettrick campaign.

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Redeployment (Floating LiDAR Redeployment) - Valorous

The redeployment of the Floating LiDAR system within the proposed Valorous Floating Offshore Wind Farm project site, following recovery in January 2022, has been successfully undertaken.

Redeployment and Operation Floating LiDAR System

 

To inform the engineering designs and Environmental Impact Assessments (EIA) for the proposed Valorous Floating Offshore Wind Farm (FLOW), a Floating LiDAR and associated mooring system has been successfully redeployed within the boundary of the proposed Valorous Floating Offshore Wind Farm (FLOW) project site.

 

The Floating LiDAR is maintained in position via appropriate mooring systems. The Floating LiDAR will remain at the location listed below for a 11-month period. Details of the device and relevant Aids to Navigation are provided within the attached NtM.

 

All vessels are requested to always maintain a safe distance (100m) from the Floating LiDAR.

 

The Floating LiDAR equipment will undergo regular scheduled maintenance during the operation period, further notice to mariners will be issued confirming the dates and maintenance activities

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Drilling - Diadem Exploration Well

Capricorn Energy UK Ltd are drilling the Diadem exploration well using the Valaris 123 jack-up rig.

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Loss of Clump Weight - MarramWind

On the 6 May 2022 at 17:12 UTC, during sea acceptance trials for the MarramWind Site Investigation Surveys, a Sound Velocity Probe (SVP), Ultra Short Baseline (USBL) acoustic positioning system beacon and clump weight were lost. The lost equipment measures 100cm x 30 cm x 30cm. The depth of water where incident occurred is 125m. The Project is working to recover the object. Marine operators are advised to be aware of this object during any operations they undertake.

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Rig - Ocean Patriot

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Deepsea Aberdeen

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Prospector 5

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Kingmere MCZ

ABPmer will be conducting a geophysical and drop-down video survey in and around the Kingmere MCZ.

Geophysical Survey

 

It is expected that geophysical survey operations in the area will commence on Sunday 24th May for a period of 6 days. The survey will be conducted using the ‘Wessex Explorer’ using a vessel mounted multibeam echosounder.  Multibeam data will be acquired in nine small survey areas within the wider area detailed in this notice. ABPmer have completed these works successfully in previous years and understand the importance of working with the fishing industry and as such will always work around fishing gear and fishing activity.

 

Geophysical Survey Vessel

Wessex Explorer

MMSI: 235008166

Vessel Mobile: 07913 810292

 

Drop-Down Video Survey

Three one-day drop-down environmental video surveys will be conducted within the same survey areas (with the exception of area C). These will be conducted on w/c 23rd May OR w/c 5th June, w/c 4th July and w/c 18th July. The video will be towed up to 100m astern of the Littlehampton Harbour Board vessel, ‘Erica’.

 

DDV Survey Vessel

Erica

MMSI: 235080084

Littlehampton HM: 01903 721215

 

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Pipeline Installation - Evelyn Field

Tailwind Mistral Ltd intends to install pipelines and umbilicals from the existing Evelyn Well EV01 to the GEEBB Manifold and the Triton riser base, this will comprise: 8" production line with 3" piggyback gas lift line, Control umbilical line.

The Evelyn field is located within UK licence P1792 approximately 7.5km to the South West of the Dana Operated Triton FPSO. The development will consist of a single gas lifted production well EV01.

 

The 8" Pipeline route runs from the Evelyn valve skid (EVVS) drill centre tie-in structure in a north east direction to a comingling tie-in structure (GEEBB) which will comingle production fluids from Gannet E, Evelyn and Bittern. The GEEBB structure will be located outside the Triton swing circle, but inside its 500m safety zone. The 8-inch pipeline will be trenched and buried using trench backfill material. Areas which are not trenched at the Evelyn and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

The 3" Pipeline route runs in a south westerly direction between the GEEBB tie-in and distribution structure to the Evelyn valve skid (EVVS) drill centre tie-in structure. The GEEBB structure will be located outside the Triton swing circle but inside its 500m safety zone.  The 3-inch gas lift pipeline will be piggybacked to the larger 8-inch production pipeline and will be trenched and buried using trench backfill material. Areas which are not trenched at the Evelyn and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

The 9.5 km control umbilical will be installed from the EVVS to the umbilical riser base at Triton FPSO.  The umbilical will contain a total of 16 cores and will provide hydraulic, electrical and chemical supplies from the Triton dynamic umbilical at riser base SY9516A to the EVVS and wells

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Completion of Platform Decommissioning Activity - Ketch Field (44/28) and Snagging Hazard

Ketch platform decommissioning completed and the Sleipnir Heavy Lift Vessel has left the area (05:35 BST on 22nd April 2022). Snagging hazard remains and an EERV / Guard vessel will be on-station until July 2022 when the riser stub will be removed as part of the DNO North Sea Limited Pipeline decommissioning operation. Please also note that an 18” riser stub remains protruding approximately 1.5m above seabed level close to the platform location.

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Moorings and scientific equipment installed - Moray Firth

Mariners are advised that the University of Aberdeen has completed the installation / service & reinstallation of the moorings and equipment listed in the current notice. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022

The moorings support sound recording equipment, and / or acoustic loggers that record echolocation clicks of dolphins and porpoises. Where moorings are subsurface, they extend no more than 3 m vertically from the seabed. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022. 

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Uncharted Wreck - Fifeness to Montrose

Wreck observed outside of Lunan bay, south of Montrose. Wreck standing upright, slightly leaning to one side, measuring 41.5m in length, 7.2m in width and 6.5m in height at a depth of 19.3m. Matches description of wreck of armed trawler (ID 3044) positioned approximately 850m away, both in measured dimensions as well as bomb markings described in the middle parts of the wreck. In this case, the wreck is positioned far from its listed position in admiralty charts over the area.

Whether this is wreck 3044 or an uncharted wreck can however not be confirmed.

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Mooring and scientific equipment installed - Moray West offshore windfarm site

Mariners are advised that the University of Aberdeen has completed the installation of the moorings and equipment listed in the current notice. Moorings support sound recording equipment, and / or acoustic loggers that record echolocation clicks of dolphins and porpoises. Subsurface moorings extend no more than 3 m vertically from the seabed. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022.

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Dogger Bank A Export Cable Burial Operations

The trenching support vessel, Grand Canyon III, will perform post-lay burial operations, including post-trench survey, on the Dogger Bank A export cable in the Southern North Sea. The work will be performed in a single Campaign, starting on the 3rd May 2022 and continuing until approximately 29th July 2022. The work will be continuous, 24 hours a day.

During trenching operations and until the cable has been protected by means of burial or rock placement, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention.

 

The trenching operations are planned to commence from the nearshore end of the cable route, beginning at the pre-cut trench at HDD exit, working towards the Offshore Platform. The exact sequence of trenching and post trench survey will be subject to on-site conditions and operational planning, but in general is typically undertaken in 10-20 km blocks of alternating trenching followed by survey. At existing third-party crossing locations (Langeled pipeline and SEAL pipeline), trenching exclusion zones of +/-20m shall be applied (no part of the trencher is to enter the exclusion zone).

 

During operations the Grand Canyon III will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Grand Canyon III and pass at reduced speed.

 

Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor. In the period between cable lay and cable burial, or protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.

 

To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM). The guard vessels will contact vessels approaching within 1.5Nm.

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Rig - Maersk Resolve

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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IRIS Fiber-Optic Submarine Telecommunications Cable Installation

Please be advised that the cable laying ship CS DURABLE will be conducting telecommunication cable installation operations for the IRIS undersea cable system between Galway Bay, via Rockall, to Iceland, work is scheduled to be carried out between approximately 30th May and completing approximately 15th August 2022.

We kindly request that ships and fishing vessels keep a distance of at least 1 nm from the cable installation vessel to ensure safe operations.  We also kindly request that any towed, set or drift gear, such as longlines, trawls gillnets, and seine nets be moved off the route by a distance of 1/2 nm on either side at the locations and during these periods noted above above in order to avoid gear entanglement. 

 

Vessel Name:                       CS DURABLE

Call Sign                                V7DI8.

VHF Working Ch.                  Monitoring 16 & 13

Activity:                                 Underwater Cable Operations

Location:                               West coast of Ireland, Rockall and UK EEZ in Atlantic waters (north to Iceland)

Activity Period:                     May 30 to August 15, 2022 [Subject to change]

24 hr. contact:                       Mobile +1 732 294 3058 when in cell range

Bridge VSAT:                       +1 346 201 5210

Office VSAT:                        +1 346 201 5209

EMAIL                                  csdrmaster@subcom.com

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Subsea Cable Installation - Mainland Orkney to Hoy North and Centre

Mainland Orkney to Hoy North and Centre Cable Replacements: The projects are experiencing significant delays relating to offshore cable installation and no offshore operations will be taking place until further notice. The previous Notice to Mariners dated 1st April 2022 is now cancelled. Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mainland Orkney-Hoy North and Centre submarine electricity cables.

Mainland Orkney to Hoy North and Centre Cable Replacements: The projects are experiencing significant delays relating to offshore cable installation and no offshore operations will be taking place until further notice. The previous Notice to Mariners dated 1st April 2022 is now cancelled.

 

 

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mainland Orkney-Hoy North and Centre submarine electricity cables. The purpose of this notice is to outline the working area and operations for the vessels along the cable lay route. There will be three different vessels associated with the subsea cable installation process. In summary: 1. Cable Lay Vessel: Global Symphony (entire route) 2. Post-Lay Inspection of Cable: Global Symphony (entire route) 3. Post-Lay Stabilisation Works: C-Force (alternative vessels may be either C-Fenna or C-Odyssey) 4. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed in the attached NtM. The vessels will be working 24 hours per day during these operations.

 

Cable Lay & PLIB Vessel Details The vessel that will be carrying out the crossing construction works, the cable installation works and also the cable post lay inspection operations is the Global Symphony.

 

Post Lay Stabilization Works Vessel Details The vessel that will be carrying out the post lay stabilization works on both North and Centre cable is the C-Force (or one of the listed alternative vessels).

 

Description of Installation Operations CLV Global Symphony will be installing concrete mattresses on crossing points and then lay the Mainland Orkney to Hoy North & Centre cables. The offshore post lay survey operations will be carried out by the Global Symphony immediately after completion of each cable lay operations. The construction vessel will be installing concrete mattresses and rock filter bags on both North and Centre cables at pre-determined locations as part of the post lay stabilization works. The nearshore sections of the marine cables will be surveyed using the Delta 9151 (or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed.

 

Fishing Liaison Officers (FLOs) Fishing liaison for the cable lay operations will be co-ordinated by Brown and May Marine (BMM). For any commercial fishery queries please contact the Company Fishing Liaison Officers (CFLOs) Alex Winrow-Giffin on 07760 160039, alex@brownmay.com or Meg Kalafat on 07702 710176, meg.kalafat@brownmay.com

The local Fishing Industries Representative (FIR) Chris Davidson (07810 305100), cad17@hotmail.co.uk will also be in place to liaise with the vessels and fishing operations in the area.

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Power Cable Installation - Carradale to Arran

Carradale to Arran Subsea Cable Installation: The Project is experiencing significant delays relating to offshore cable installation and apart from works in Area A, no offshore operations are anticipated to be undertaken until further notice. The planned operation dates for Area A are now from the 15th May 2022 to the 15th July 2022. This Notice to Mariners supersedes the original Notice to Mariners dated 1st April 2022.

Carradale to Arran Subsea Cable Installation: The Project is experiencing significant delays relating to offshore cable installation and apart from works in Area A, no offshore operations are anticipated to be undertaken until further notice. The planned operation dates for Area A are now from the 15th May 2022 to the 15th July 2022.

This Notice to Mariners supersedes the original Notice to Mariners dated 1st April 2022.

 

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Carradale-Arran submarine electricity cable. As part of the cable replacement project, along with the cable lay and burial operations, 2 off Horizontal Directional Drilling (HDD) operations will be carried out, with the aim to install 2 of 400mm SDR11 HDPE ducts that will allow the Carradale-Arran cable to reach the onshore connection point. The purpose of this notice is to outline the area for the duct installation works (Area A) as well as the working area for the cable lay and burial vessels along the cable lay route (Area B).

 

There will be multiple vessels associated with Carradale-Arran cable installation process. In summary: - AREA A: 1. Marine assistance to duct installation limited to the HDD punch out locations: C-Force (alternative vessels may be either C-Fenna or C-Odyssey). This will include diving ops being carried out at the HDD exit points.

- AREA B 2. Boulder Relocation – Global Symphony (entire route) 3. Cable Lay Vessel – Global Symphony (entire route) 4. Post-Lay Inspection Burial (PLIB): Global Symphony (entire route) 5. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the above-mentioned subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed in the attached NtM.

 

Ducts Installation Works Vessel Details The vessel diving works will be carried out on the ducts#1 and #2 from is the C-Force (or one of the listed alternative vessels).

 

Description of Duct Works After the HDPE duct is pushed into the bore, divers will install over the duct temporary ballast to keep the duct in position in preparation for the cable installation works. Once the duct is stabilized, divers will remove the bullnose and install a bell mouth on each duct. The duration of the operations is shown on table 1. All vessels will be limited in maneuverability. Other vessels should maintain an appropriate and safe distance of 500m when passing the vessels undertaking cable operations and should pass at the lowest speed to avoid vessel wash effects. The vessel will be working 24 hours per day during these operations.

 

Cable Lay & PLIB Vessel Details The vessel that will be carrying out the boulder relocation works, the cable installation works and also the cable post lay inspection and burial operations is the Global Symphony.

 

Description of Installation/PLIB Operations CLV Global Symphony will be relocating boulders in preparation for cable lay operations and will then lay the Carradale to Arran cable. The PLIB operations will be carried out by the Global Symphony immediately after completion of cable lay operations. The nearshore sections of the marine cables will be surveyed using the Delta 9151(or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed.

 

Fishing Liaison Officers (FLOs) Fishing liaison for the cable lay operations will be co-ordinated by Brown and May Marine (BMM). For any commercial fishery queries please contact the Company Fishing Liaison Officers (CFLOs) Alex Winrow-Giffin on 07760 160039, alex@brownmay.com or Meg Kalafat on 07702 710176, meg.kalafat@brownmay.com

The local Fishing Industries Representative (FIR) George White on georgewhite0@gmail.com (07761 873965). will also be in place to liaise with the vessels and fishing operations in the area.

 

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Subsea Structure - Gannet E Tie-In Valve Skid (GETVS)

Tailwind Mistral Ltd intends to install the Gannet E Tie-In Valve Skid at the Gannet E Field

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Pipeline Installation - Gannet E Expansion

Tailwind Mistal Ltd intends to install pipelines between the Existing Gannet E Manifold (GEM) to the new Gannet E Tie-in Valve Skid (GETVS) and a 9" production line between the GETVS to the GEEBB Manifold.

Pipeline route runs from the Gannet E Tie in Valve Skid (GETVS) structure at the drill centre in an easterly direction to a comingling tie-in the GEEBB manifold. 

The GEEBB manifold will be located outside the Triton swing circle, but inside the 500m safety zone.

 

The 9-inch flexible flowline will be trenched and buried using trench backfill material. Areas which are not trenched at the Gannet E and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

Methanol will be delivered from the Gannet E Manifold (GEM) to the Gannet E Tie-in Valve Skid (GETVS) via a dedicated 3/4" thermoplastic hose within the GEM to GETVS chemical/hydraulic jumper bundle.  The jumper bundle containing the methanol hose and will be protected from fishing gear interaction and/or dropped objects by a concrete protection mattresses and additional grout bags where concrete mattress placement is not practical. 

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Subsea Structures - Evelyn Valve Skid

Tailwind Mistral Ltd intent to Install the Evelyn Valve Skid Located near the Evelyn EV01 Well

The Evelyn Valve Skid (EVVS) is part of the Evelyn field development, consisting of a gas lift flowline piggy-backed onto a new production pipeline and a new umbilical for carrying control, power, hydraulic lines and chemicals from Triton FPSO to Evelyn. 

 

Evelyn will be connected to Triton via the existing Triton P1 Bittern production riser. 

 

The Evelyn valve skid (EVVS), will be installed at Evelyn, near the location of the EV-01 well, it will be connected to the EVVS from the EV01 xmas tree by the rigid production and gas lift spools pipeline and electrical and umbilical jumper bundles.  A 9.5 km control umbilical will be installed to the EV01 well via the EVVS to the umbilical riser base at Triton FPSO.  The umbilical will provide hydraulic, electrical and chemical supplies from the Triton dynamic umbilical at riser base SY9516A to the EVVS and wells.

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Survey - North Sea (Ref: 1357)

CGG will acquire ~1800 km² of multi-client 3D seismic data in UK Quad 3 between May and September 2022. Two survey vessels will tow up to 14 8km long hydrophone streamers and a seismic source. The source will emit acoustic energy into the sub-surface that is reflected back to the streamers. The survey is part of a larger ~9000 km² program in Norwegian waters to be acquired concurrently. The UK survey duration is estimated to be 45 days, with 31 days of active source effort.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Shearwater GeoServices AS

Amazon Warrior

3FNE9

Linde-G

V7A2093

Mainport Pine

V7ZH8

Amazon Conqueror

3EBI3

Astra G

HP8210

Mainport Cedar

V7ZH7

8400m

8m

01/05/2022 - 30/09/2022

For 45 Days (in UK)

210,211

2,4

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Partially Exposed Conductor Stump - Ketch

Following Operational challenges during the Ketch conductor severance and removal campaign, the 26 inch conductor for KA08 has been severed at a shallower depth of -8ft, leaving a partially exposed stump. ROV footage has observed a crater around the conductor with approximately 2 ft of conductor sitting above the base of the crater. The crater is estimated to be 4 m in diameter with a maximum depth of10 ft.

The crater is known to be naturally backfilling with seabed sediment and is expected to continue to do so, particularly during winter months. The incremental risk posed by the 2 ft conductor stump is considered to be negligible.

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Rig - Prospector 1

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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ADCP deployments on the seabed - Skye and Summer Isles

Deployment of three scientific Acoustic Doppler Current Profilers on the sea bed for 12 months – no surface markers.

We will be deploying three scientific Acoustic Doppler Current Profilers on the sea bed for 12 months from May 2022 to collect currents data for environmental monitoring and hydrodynamic model validation.  The instruments have no surface markers and will be recovered using acoustic releases.  Two of the instruments will be inside low profile trawl-resistant frame (Little Minch, west of Skye, and Linn Crowlin, east of Skye) and one inside a steel frame (Summer Isles).  See attachment for photos of the frames, a chart with their position and their positional details.

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Subsea Foundation Inspection - Moray Offshore Windfarm (East)

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence subsea Remotely Operated Vehicle (ROV) foundation inspections at all locations within the bounds of Moray East Offshore Windfarm on the 1st April 2022 for 100 days. This includes scour visual inspections at all jackets, and Cable Protection Systems entering substructures at selected locations. The area of Operation is shown in Figure 1 below and will be carried out using the GXS Viking.

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Rig - Seafox 4

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Export Cable Corridor Survey - Outer Dowsing Offshore Wind Farm

Outer Dowsing Offshore Wind (a joint venture between TotalEnergies and Green Investment Group) shall be conducting a 3.5 month offshore geophysical survey between the 26th March and 15th July 2022 using vessel Geo Ocean III call sign: LXGP. The survey vessel shall be towing a cable up to approximately 75m behind the vessel (the end marked by a tail buoy) at depths of up to 3m below sea level. The survey vessel shall have limited maneuverability so please allow a safe distance.

Company: Outer Dowsing Offshore Wind

Contractor: GeoXYZ Limited

Survey vessel : Geo Ocean II

Survey vessel call sign: LXGP

 

Earliest start date: 26th March 2021 Latest finish date: 5th July 2022

 

It should be noted that the survey vessel is accompanied by a fishing vessel: Sorrento providing visual reconnaissance for any sea surface obstacles.

Company : Outer Dowsing Offshore Wind

Contractor : NFFO Services Limited

Support vessel : Sorrento

Support vessel call sign : 2XLE

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Cable Route Survey - Oceaniq Q&E North and South

Mariners are advised that survey vessels and equipment will be used in the offshore areas and coastal sea waters between UK, France and Belgium. Further nearshore and landfall survey work will be concentrated around Ramsgate,UK, to Oostende,Belgium on the Northern Q&E route and Newhaven,UK to Cayaux-surMer, France on the Southern Q&E route. The nearshore geophysical surveys work will be conducted by DeepBV using survey vessels Deep Seapal and Deep Marker the 24th January 2022 to 31st July 2022.

During this survey the vessels will be deploying underwater survey equipment at which such times the survey vessel may have restricted ability to manoeuvre and approaching vessels are requested to pass at a safe speed and distance. Passing vessels are requested to give a minimum passing clearance of 300 m.

 

Project Description
Oceaniq Q&E route surveys will be conducted by MMT on behalf of Oceaniq, Global Marine Group. Global Marine are turnkey installation contractors to two fibre optic cable systems; Q&E North and Q&E South. A pre-installation geophysical survey with towed/tethered-equipment and sensors is scheduled between January and March 2022, with the installation is scheduled for 2023. The proposed subsea fibre optic cables are required to increase internet bandwidth capacity to meet rising demand. The International Cable Protection Committee (ICPC) notes that approximately 99% of the World’s communication are provided by such subsea cables.


Survey task
A detailed geophysical & geotechnical survey will be carried along the proposed cable route corridor of Q&E north and Q&E south.

  • Q&E north is approximately 112 km long and a 500 m wide corridor.
  • Q&E south is approximately 141 km long and a 500 m wide corridor.

The geophysical survey work will be conducted by vessels Deep Seapal & Marker with hull mounted MBES and SBP with ROTV mounted sidescan sonar, sub-bottom profiler and tethered magnetometer beginning January 2022.

 

Port of Operation
Deep Seapal and Deep Marker will mobilise in the port of Ramsgate, United Kingdom from 24th January 2022.
 

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Survey - Tolmount East Site Survey (Ref: 1373)

A 2 Day Site Survey at Tolmount East using the vessel MV Ocean Resolution call sign: 3EIPG between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG

N/A

25/04/2022 - 31/08/2022

For 2 Days

42

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Wave data buoy - East of Shapinsay

Deployment of an AquaNode Wave Buoy deployed at a depth of 35m, moored with a block on the seabed with a mooring swing radius of <200m about the location given. Colour: Bright Yellow Markings: High-visibility reflective tape, marked 'SURVEY' Dimensions: 750mm Ø x 391mm. Deployment Start 13 April 2022. Deployment End October 2023.

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Survey - Hunter HK-1 Site Survey(Ref: 1369)

A 2 Day Site Survey at Hunter HK-1 using the vessel MV Ocean Resolution call sign: 3EIPG between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG

N/A

25/04/2022 - 31/08/2022

For 2 Days

44

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Survey - Bell ZX, Victor JM and Kelvin TM Site Survey(Ref: 1368)

A 6 Day Site Survey at Bell ZX, Victor JM and Kelvin TM using the vessel MV Ocean Resolution call sign: 3EIPG or MV Kommandor call sign: MCJO2 between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG or

MV Kommandor

MCJ02

N/A

25/04/2022 - 31/08/2022

For 6 Days

49, 44

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Guard Buoy Deployment - Berwick Bank OWF

Mariners are advised that a guard buoy associated with a bottom mounted ADCP device recording metocean data within the proposed Berwick Bank Wind Farm array area will be deployed.

This is part of a wider deployment of three guard buoys and associated equipment from October 2021. The guard buoy replaces one previously lost buoy in January 2022. It will be installed at the same location using the same methods. The Forth Warrior is the planned deployment vessel. A notification will also be provided on Kingfisher Information Services.

 

Expected arrival on site is 14th to 30th April 2022 with the works completed the same day where possible, weather conditions permitting. Therefore, we would like the validity period for this Notice to Mariners to be the 14th April 2022 – 31st October 2022 to allow for any eventualities during installation operations and to cover any ongoing O&M activities throughout the deployment period.

 

Please see the attachment pdf for further details. 

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Inter Array Cable Installation - Seagreen Site Boundary

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install and trench inter-array cabling between the wind turbine generator foundation structures and offshore sub-station platform within the Seagreen site boundary. Operations will commence with cable lay and trenching between wind turbine generator foundation structures, inter array cables will also be installed into the Offshore Substation Platform at a date to be confirmed. Two vessels will be involved in the operation.

Siem Stingray – This vessel will act as the Installation Support vessel, cable installation technicians will be deployed to the wind turbine generator foundation structures using the vessels’ motion compensated gangway system. The cable pulling equipment will be transferred onto the foundation structure and set up ready for the cables to be pulled into the structure and secured in the foundation basement. The motion compensated gangway system can be used for personnel and cargo transfers.

 

Seaway Phoenix – This vessel will lay the inter array cable between adjacent foundation structures. Once the cable has been pulled in and secured at the first foundation, the cable will be surface laid to the second foundation, pulled in and secured. On completion of this operation the cable will be trenched to a pre determined depth utilising a remotely operated trenching vehicle.

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Fishing Advisory Zone - Ninian North

Seabed snagging hazards following the removal of the Ninian North jacket in April 2022 and the removal of the automatic 500-metre Safety Zone.

Following removal of the jacket structure below sea level, there remain a significant number number of seabed structures & items that are potential snagging hazards, within approx. 200 metres of the jacket position. These include:

  • Jacket footings (to 46 metres above seabed)
  • SSIV structure
  • 12 impressed current anodes and associated cables
  • Umbilicals
  • Pipeline crossings, spans, exposed flanges/bolts
  • Pipeline repair clamps with exposed bolts.
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Survey - Storr 3 Debris Survey (Ref: 1362)

A 1 Day Debris site survey at Storr 3 using the vessel MV Kommandor call sign: MCJO2 between 9th April 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Geosurvey Limited

MV Kommandor

MCJO2

1250m

3m

09/04/2022 - 31/12/2022

For 1 Day

9

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Survey - Storr Field Survey (Ref: 1367)

A 1 Day Storr Field Survey using the vessel MV Kommandor call sign: MCJO2 between 24th March 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Geosurvey Limited

MV Kommandor

MCJ02

N/A

24/03/2022 - 30/08/2022

For 1 Days

9

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Hydrographic Survey - Firth of Clyde

The Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey April in the Firth of Clyde. The proposed works are planned from 30th March 2021 and will last approx. 100 days Using vessel Sound of Raasay call sign:ZNZP9.

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Noble Hans Duel Drilling Rig

The Drilling Rig Noble Hans Duel will be located next to the Southwark Platform for approximately 200 days from April 2022. The drilling rig Noble Hans Duel is locating to the south face of the Southwark Platform. The rig is expected to be on site in the region of 200 days.  It will be fully within the platform's 500m safety zone.

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Cement Overspill at Jacky Field

Cement over spill from historic drilling campaign. Noticed when Jacky platform was removed. This item could potential snag. Approximate size 4m x 5m. 2m in height.

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Lost Grapnel equipment - Shetland HVDC

MV SIMA has been undertaking PLGR works as part of the Shetland HVDC subsea cable link project.  During operations part of the Grapnel hook used to recover debris from the seabed along the cable route was lost. The piece of equipment is diamond shaped and  measures 0.5 x 0.5 m and is approx 50mm thick. Marine operators are advised to be aware of this object during any operations they undertake.

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Site Investigation Surveys - MarramWind Offshore Wind Farm

MarramWind Offshore Wind Farm Site Investigation Campaign will commence from 11th April and run until the 30th November 2022 (including potential for weather delays/downtime).

The Survey vessels Fugro Venturer and Fugro Galaxy will be used as main the vessels to carry out the MarramWind site investigation campaign. At this stage this campaign relates to the Offshore Windfarm (OWF) array area only. Vessel turning areas will extend up to 1km beyond the survey lines.

 

The Site Investigation campaign will comprise of the following surveys for the provision of the data outline below.

  • Geophysical survey - consisting of a bathymetry survey using multi-beam echo sounding (MBES), hydro-acoustic positioning tracking USBL system, seabed mapping (side scan sonar (SSS), sub-bottom profiling (SBP), and seismic 2DUHR. The purpose of the geophysical survey is to identify the seabed and sub-seabed conditions within the survey area.
  • Geotechnical survey - a sampling and testing programme within the survey area to evaluate the nature and mechanical properties of the superficial seabed sediments. The survey programme includes vibro-coring and piezocone penetrometer testing (PCPT).
  • Environmental survey - to map the distribution and extent of marine benthic habitats. This will comprise a benthic sampling programme to collect drop-down video (DDV) footage and grab samples for the analysis of benthic fauna, particle size distribution, and sediment chemistry.

The MarramWind Offshore Wind Farm Site Investigation Campaign will commence from 11th April and run until the 30th November 2022 (including potential for weather delays/downtime).

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Rig - Erda

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Seafox 7

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - West of Orkney Wind Farm

This geophysical survey shall take place from 2 April 2022 to 31 August 2022 and will occur in three phases: 1) Course survey lines over the offshore option agreement area and single survey lines along potential cable routes to Caithness; 2) Detailed survey in the offshore option agreement area. This phase is divided into three sub-sections and; 3) Detailed survey of potential cable corridors to Caithness. The Relume will carry out the work and the port of operation is Scrabster.

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Confirmation of Cardinal Buoys Deployment – at the Pickerill A Jacket

On the 29th March 2022, Leask Marine's C-Force completed its buoy deployment at 11:00 . The vessel Departed Pickerill A Field at 13:00 for transit to Great Yarmouth after the completion of work and arrived alongside at 20:00 the same day. This is a final notification to confirm the 4 cardinal buoys are in their final position and will remain in place until 30th June 2024 as per approval from ML/784/0.

Pickerill A former Platform Lat: 53° 32’ 57.0875” N Long: 01° 04’ 33.3425” E

 

The cardinal buoys will be deployed within the Pickerill 500 m zone at the following coordinates:

 

UPDATE: The latest version of the marine Licence accepts the 4 buoys final location is precisely as above.

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Deployment of Acoustic Receivers - Moray Firth

The Atlantic Salmon Trust have installed 15. moorings in the Moray Firth. The moorings hold research equipment that support acoustic ID tag transmitters (range testing tags) and hydrophone receivers that log the acoustic ID tag transmitters. The moorings will be removed by the 31st July 2022.

The acoustic receivers have riser lines with scientific instruments and extend vertically no more than 2m (LAT). The moorings will be recovered in their entirety.
All enquiries should be made to the Atlantic Salmon Trust Tracking Co-ordinator (lorna@atlanticsalmontrust.org).

 

If you trawl or dredge up a receiver (see photos), please do not throw it back into the water. Please retain it and contact lorna@atlanticsalmontrust.org to arrange collection.

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Completion of works - Moray East Offshore Transmission & Offshore Substation Platforms

The works associated with the Offshore Transmission (OfTI) and Offshore Substation Platforms (OSPs) were completed on the 13th January 2022. Overall care, custody and control of the works has been handed over to the Moray East Operations and Maintenance Team.  Please note, construction works associated with the Windfarm Infrastructure remain ongoing.  

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Survey - Greater Schiehallion (Ref: 1360)

A 100 Day site survey at the Greater Schiehallion using the vessels Subsea Viking call sign: LCPX, Veritas Viking call sign: LMIB3, Maria-G call sign: 3FMM5, Artemis Odyssey call sign: LNUT3 between 1st April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

PXGeo

Subsea Viking

LCPX

Veritas Viking

LMIB3

Maria-G

3FMM5

Artemis Odyssey

LNUT3

160m

8m

01/04/2022 - 30/08/2022

For 100 Days

204, 205

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Survey - Diadem Exploration Well (Ref: 1353)

VSP will be used to characterise the Diadem exploration well which will involve the use of a seismic array from the drilling rig. will involve a three-gun array suspended from the rig (3 x 250 cubic inch guns). The VSP will be undertaken for 7 days on the 16" section, 13 days on the 12¼" section and 8 days on the 8½ section. The temporary 500 m exclusion zone of the drilling rig has been assumed as the working radius. Between 1st April 2022 and 30th November 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Capricorn Energy UK Limited

N/A

N/A

01/04/2022 - 30/11/2022

For 1 Day1

22

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Uncharted Wreck - Outer Dowsing Offshore Windfarm

A marked wreck not on the Admiralty chart or wreckfinder has been discovered by the guard vessel Celena within the Outer Dowsing Offshore Windfarm.

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Deployment of a SeaWatch LiDAR Buoy (SWLB) - Awel Y Mor Offshore Wind Farm

Awel Y Mor Offshore Wind Farm Limited are planning the Deployment of a SeaWatch LiDAR Buoy (SWLB); this is a sea state measurement instrument (referred to as ‘the equipment’). The deployment location is within the UK Sector off the North Wales coast at Liverpool Bay. The equipment will be deployed within the Awel Y Mor Offshore wind farm array limits and will be deployed for approximately twelve months from March 2022.

The equipment will be located as close as reasonably practicable to the coordinates as provided within this Notice to Mariners.

 

The buoy was successfully deployed the 26th of March and the coordinates for the as laid main anchor position is updated.

 

Scheduled maintenance is planned in the autumn/winter of 2022, from September onwards.

 

Unforeseen maintenance may also be required. The mooring design is specific to each SWLB deployment and location. The equipment will be moored through a combination of steel chains, rope and rubber cord to approximately 3000 kg anchor weight at the seabed.

 

The equipment is an integrated Seawatch Wavescan buoy and ZX 300M LiDAR; the purpose of the equipment is to collect oceanographic and meteorological data using a single platform. The equipment is supplied and charged by an onboard power system which uses methanol fuel cells and solar panels to recharge onboard lead acid batteries.  

In order to minimise the risk to other sea users, the measures listed below will be adopted for this deployment:

 

The equipment will be equipped with a F1 (5) Y 20s light with 4-5 nautical mile range; the light will be mounted at the top of one of the masts, approximately 4 m above sea level.  

 

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Rig - Askepott

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Stena Spey

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Dropped object - Eastern Irish Sea

The seabed frame of the Mona metocean buoy has been lost in the Eastern Irish Sea. The last known location was: 53°40.268' N, 003°53.773' W. However, it seems likely that is has been dragged off location, potentially approx. 200m in a NW direction. The Mona buoy and accompanying chain have been recovered, but the seabed frame and approximately 30m of the combi rope groundline attached to the sea frame is lost. The Project is working to recover the object.

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Hazard - 600m tow wire - Dover Straight, Goodwin Sands

Please be advised that the Dover Coastguard has reported a hazard of 600 metre tow cable along the Dover straight Goodwin Sands. This will be a hazard to any fishing vessels.

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Anchor Block Removal - Wave Hub Site - Hayle, Cornwall

Mariners are advised that between 4th March and 15th August 2022, subject to suitable weather windows, operations will take place to remove redundant concrete and steel anchor blocks.

This will include ROV, subsea rigging, winching and under-slinging operations carried out from work vessels and heavy lift barges. Throughout said operations, these vessels shall be restricted in their ability to manoeuvre and shall be marked/ lit as such. A wide berth is requested.

 

Prior to commencing operations, an all-ships safety call shall be broadcast on VHF Ch16 confirming vessels on site and times of operation. All vessels will be contactable on VHF CH16, DSC70 for further information or Working Channel VHF 17.

 

The work will be carried out by Keynvor Morlift Ltd, Unit 15, Falmouth Wharves, Falmouth, Cornwall TR11 2TF. Tel:+44 (0)7791642452  Fax: +44 (0)845 014 9735 info@keyvormorlift.co.uk  www.keynvormorlift.co.uk.

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Construction of Wind Farm - Neart na Gaoithe Offshore Wind Farm Limited

Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) will commence construction work for Neart na Gaoithe (NnG) Offshore Wind Farm, from the 9th August 2020, with the start of casing and pile installation operations on the wind farm site.

NnGOWL is developing the NnG Offshore Wind Farm, jointly owned by EDF Renewables and ESB, which is located in the outer Firth of Forth, Scotland. The NnG wind farm area is 15 km east off Fife Ness and 29 km from the East Lothian coastline and covers an area of 105 km2

The wind farm consists of 54 no. wind turbines (WTGs) and 2 no. Offshore Substation Platforms (OSPs), with a total capacity of approximately 45 0MW. Water depths across the offshore wind farm area generally range from 40 to 60 m below LAT. The generated power will be transmitted to the grid via two subsea export cable circuits which will reach landfall at Thorntonloch Beach, East Lothian, Scotland. Specific details and location of activities within the Wind Farm Area and Export Cable Corridor will be provided via subsequent notices as work progresses.

 

Buoyage

 

Five special markers are now in position:

 

Name Location

SP 1 - Special Mark - Fl Y 5s light character

56°18.180'N 02°12.075'W

SP 2 - Special Mark - Fl Y 5s light character

56°15.643'N 02°09.329'W

SP 3 - Special Mark - Fl Y 5s light character

56°12.294'N 02°15.796'W

SP 4 - Special Mark - Fl Y 5s light character

56°14.038'N 02°18.975'W

SP 5 - Special Mark - Fl Y 5s light character

56°18.924'N 02°18.951'W

 

Four cardinal buoys are due to be deployed the week commencing 16th March. Planned deployment locations

 

Name Location

NNG - North Cardinal - Quick (Q) white light character

56°20.425'N 02°14.617'W

NNG - East Cardinal - Q (3) 10 s white light character

56°14.329'N 02°08.558'W

NNG - South Cardinal - Q (6) + Long (L) FL 15 s white light character

56°12.294'N 02°09.760'W

NNG - West Cardinal - Q (9) 15 s white light character

56°17.057'N 02°21.084'W

 

A steel chain will be connected to each marker buoy, and the chain will be present through the water column, connected to an anchor placed on the seabed.

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Hywind Tampen installation

Activity: Installation of 11 floating wind turbines with anchor system on Hywind Tampen, in the area between Snorre, Visund and Gullfaks. Two export cables will also be installed from Hywind Tampen to Snorre and Gullfaks.

Period: From 1 April until the notice is canceled in Efs, autumn 2022. Precautionary area: (1)

 

Vessels: "Skandi Skansen" (MAXR6): Installation of anchor system 1 April - 1 June.

"Skandi Iceman" (LFMY): Towing and installation of floating wind turbines from approx. 15 May until autumn 2022.

 

Note: To avoid damage to unprotected equipment on the seabed and in the water column, as well as on fishing gear, all fishing with bottom gear within the precautionary area is to be avoided. The area will also be monitored by the Equinor Operations Center, which can be reached on VHF channel 14 or on telephone +47 55 14 32 78. Until completion, this will be an extended precautionary area. We will provide an updated Notice to Mariners regarding the permanent precautionary area that will be established when the wind farm installation is completed. Charts: 304, 307.

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Survey - Liverpool Bay Reservoir Survey (Ref: 1324)

A 99 Day reservoir survey in Liverpool Bay between 15th March 2022 - 15th July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI

 

 

15/03/2022 - 15/07/2022

For 99 Days

110

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Rig - West Elara

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Seagreen Offshore Wind Farm – Maintenance of Acoustic Monitoring Devices

Maintenance works will be undertaken on the five acoustic monitoring devices located in and around the Seagreen Offshore Wind Farm site.

Mariners are advised that maintenance works on the five acoustic monitoring devices in an around the boundaries of the Seagreen Offshore Wind Farm will be undertaken. The Marine Scotland Science vessel Alba na Mara plans to service the 3 monitors outside the site boundary this evening 14th of March. The 2 monitors inside the site boundary will be serviced tomorrow, 15th March. These acoustic monitoring devices collect real-time noise measurements for a period of 36 months. The devices will be inspected and maintained at least every four months.

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Seagreen Offshore Wind Farm –Installation & Commissioning of Wind Turbine Generators

Installation of wind turbine generators (WTG) will commence within the boundaries of the Seagreen offshore wind farm.

On behalf of Seagreen Wind Energy Ltd, MHI VestasOffshore Wind will commence the installation and commissioning of 114 wind turbine generators.There shall be four vessels utilised during thisoperation.The Jack up Vessel Wind Orca will be the main installation vessel. Wind Orca will transport the WTG components to site, jack up to the required height next to the foundation structure and install the WTG components.The Service Operation Vessel (SOV)Acta Centaurus will provide accommodation for the WTG commissioning technicians. Personnel will utilise the Acta Centaurus’s walk to work gangway system to access the WTG structures for commissioning activities.Two Crew Transfer Vessels(CTV’s), HST Euan and the HST Harri will support the above two vessels during installation and commissioning activities.The above vessels are expected to arrive at the Seagreen site on or around the 5thof December, WTG installation activities shall continue until late 2022.

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Decommissioning Activity at the Indefatigable 18A Installation

Decommissioning related activities – HCF Campaign at the Indefatigable 18A Installation. Planned HCF works are due to commence on the Indefatigable 18A Platform (UKCS 49/18A). The Jack up Barge Haeva, departed from Bessemer on 9th February 2022 and transited to the Indefatigable field, where it has been holding for a suitable weather window to come alongside the platform.

The HCF operations will commence around  8th March 2022 following the interface activities .The HCF campaign duration is 142 days and finish approximately 25th July 2022.

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Drilling Activity - Valaris 122 at Edinburgh

The Valaris 122 (jack up drilling rig) will be conducting drilling operations at the Edinburgh field on the 30/14a-Edinburgh well. The Valaris 122 will be drilling at a standalone location in the Edinburgh field on a single well campaign. The total duration of drilling and completion activities is expected to last approximately 160 days.

Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone. 

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Subsea Clearance Project - Ex Northern Producer FPF 500m Zone

EnQuest Heather Ltd intends to undertake the seabed clearance works in the ex Northern Producer FPF 500m zone in relation to Dons Field decommissioning works commencing 01 April 2022.

The workscope comprises of several ROV Construction Support Vessels (CSV) performing the seabed clearance of the risers, Mid Water Arch, Riser Base Structure and surface laid spoolpieces, pipelines and umbilicals up to the point of burial.

 

Initially an ROV Construction Support Vessel (CSV) will perform the recovery of the concrete protection mattresses from over the surface laid spoolpieces, pipelines and umbilicals and will perform the cuts on these items up to their point of burial at full trench depth or start of rockdump. This will be followed by an Anchor Handling Tug (AHT) which will recover the Flexible risers and the surface sections of the flowlines and umbilicals before releasing the Mid Water Arch (MWA) and floating it to the surface. The MWA will then be towed to Lerwick in the Shetland Isles for disposal.

 

Finally another CSV will be in field to perform the recovery of the MWA clump weights, Riser Base Structure, rigid spoolpiece and pipeline sections along with any remaining concrete protection mattresses and grout bags. The 500m zone will then be surveyed for debris, the debris will be recovered and a final 500m zone MBES clearance survey will be performed to confirm the 500m zone is clear of any oil field related debris and that no snag hazards remain. An over trawl survey will then be performed by the SFF to confirm there are no snag hazards before issuing a seabed clearance certificate and opening up the area to fishing activity.

 

All the vessels will be positioned within the ex Northern Producer FPF 500m Zone during these activities with the AHT also towing the MWA to Lerwick along a predetermined tow route.

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Survey - Goldeneye Seabed Clearance Survey (Ref: 1344)

A 0.5 Day Seabed Clearance Survey at the Goldeneye using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 0.5 Day

14

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New Safety Zone: Kyle/Curlew DUTU Structure

A new safety zone has been granted by the Secretary of State for the above location/structure. For installations already on location the safety zone will come into force on 1st March 2022.

This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

 

Your FishSAFE Information will be updated in the next release.

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Survey - Minke & Orca Survey (Ref: 1355)

A 4 Day survey Minke & Orca using the vessel MV Kommandor call sign: MCJO2 03rd March 2022 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd 

MV Kommandor

MCJO2

N/A

03/03/2022 - 31/07/2022

For 4 Day

44

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Abandoned Well - 15/24b-5

No structure left on the seabed – decommissioned fully.

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Anchors on seabed - Tybalt Well

12 pre-laid anchors will be left on the seabed complete with lengths of chain when the rig departs location late December and as such may cause a hazard to fishing vessels. Anchors will be on location for 2-3 months until the rig returns. Update: Due to a change in well sequence, the expected duration of storage has been extended to Summer 2022.

As laid anchor pattern with rig in position attached, notice will be updated after rig departure to show only the remaining equipment.

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Possible Hazards (initial ‘trawl sweep’ findings)

The Moray East Over Trawl Survey (Export Cable Trawl Sweep) was undertaken by the MV Sardonyx between the 1/9/2021 and the 5/9/2021. The work was undertaken using appropriate gear types for the locations outlined below, with the crossings being undertaken successfully. At Section 1, at crossing position 57°41.962'N 002°33.078'W, the gear encountered a peak tension and a reduction in gear spread.

At this location, the export cables are buried to the required depth and the trawl gear did not pass over any rock protection or any known boulders, as such the cause of the peak tension is unknown. This will be investigated by the project at the earliest available opportunity.

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Rig - Valaris 72

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Noble Lloyd Noble

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Intrepid

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Rowan Stavanger

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - 590021

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris Gorilla VI

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Curlew Pipeline and Seabed Clearance Survey (Ref: 1335)

A 5 Day Clearance survey at Curlew B,C,D and pipeline and umbilical routes using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 5 Days

29

Type See detailed map on our bulletin website
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Survey - Kingfisher PL & Umbilical Seabed Clearance Survey (Ref: 1340)

A 2 Day Clearance survey at Kingfisher PL & Umbilical using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 2 Days

16

Type See detailed map on our bulletin website
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Area 458/464 - Change of Active Dredge Zone

Tarmac Marine Ltd. and Cemex UK Marine Ltd. have applied to the MMO to amend the Active Dredge Zone in Areas 458/464 West Bassurelle in the East Channel Region.

The application is for the Active Dredge Zone in Area 464 to be removed and the Active Dredge Zone in Area 458 to be extended by an equal extent.

 

The changes are planned to come into effect after 22/02/2022.

Type See detailed map on our bulletin website
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Snagging hazard - Near Well 3/03-12

Unidentified snagging hazard at, or close to, the location of well 3/03-12.

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Snagging Hazards - Decommissioned Murchison jacket footings - Fishing Advisory Zone

600m x 600m box covering the remaining jacket footings post-decommissioning. Area inside this region has NOT been verified by overtrawl survey.

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Seabed hazards following removal of Banff FPSO anchors & moorings

A series of deep, steep sided trenches at mooring line touchdown points and areas of disturbed seabed with clay boulders at the anchor locations, caused during recovery of the anchors. Moorings and anchors have been removed, leaving the seabed features.

10 mooring line trenches, varying in length from 70m to 180m; up to 8 metres wide and up to 9 metres deep. These trenches are steep-sided (in many cases vertical, cut into the clay seabed).

 

10 anchor scars, consisting of shallow trenches (20-90 metres long), shallow-sided depressions (less than 2 metres deep) but with areas of significantly disturbed seabed, including clay boulders up to 3 metres in size.

Type See detailed map on our bulletin website
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MetOcean Buoys - NEP Project

7 MetOcean buoys will be installed to monitor the local metocean conditions within the NEP carbon capture project area. Each location shall have a seabed frame with a navigation buoy on the surface.

The 7 units will have the following equipment:

Units 1, 3, 4, 5, 6 & 7 - Seabed Frame with attached acoutstic release mechanism & surface navigation buoy within 150m of the seabed frame

Unit 2 - Seabed Frame with attached acoutstic release mechanism & surface navigation buoy within 150m of the seabed frame. This unti will also have a second surface buoy attached to the seabed frame to measure additional information.

It is advised to give 200m clearance to these units

Type See detailed map on our bulletin website
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NW Schooner Subsea Well - Missing Debris Cap

The Debris Cap for the NW Schooner subsea well has been identified as missing, leaving the wellhead more vulnerable to snagging on fishing nets. The Debris Cap is 4.5m x 3.9m x 1.4m and approx 3.5 tonnes, whilst the wellhead stands 6m off the seabed.

The approximate dimensions of the Debris Cap is 4.5m x 3.9m x 1.4m with a weight of approximately 3.5 tonnes. It is not known whether the Debris Cap is lying within a 500m zone of the well. A 200m x 200m area centred on the well has been searched, with no sight of it. Therefore the exact location of the Debris Cap is unknown. The loss of the Debris Cap leaves the NW Schooner wellhead more vulnerable to snagging from trawler/fishing nets. The approximate size of the tree with over trawl legs deployed is 7.8m x 7.8m x 6m high.

Type See detailed map on our bulletin website
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Rig Move – Valaris 121 to Judy field

Chrysaor (a Harbour Energy company) plan to move the Valaris 121 Jack-up drilling rig from the Dunnottar field location to the Judy Riser Platform to perform drilling operations on the Judy 30/07a-RD development well. Throughout well operations there will be a dedicated ERRV on location monitoring the surrounding sea area.

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Deployment of Two Metocean Buoys, with Co-Located Guard Buoys - Dogger Bank

Partrac are to deploy two metocean buoys at two locations within the Dogger Bank South Project Area in January 2021, for a period of 6 months. The metocean buoys will be deployed alongside two guard buoys which will be co-located ~200 m NNW from the Metocean Buoys. Please maintain a 500 m clearance from the deployed equipment.

The guard buoys are yellow pillar shaped special marks, exhibiting a yellow St Andrews Cross day shape and radar reflector.  The buoys are each fitted with a yellow light, flash sequence: Fl (5) Y 20s 

 

The metocean buoys are 1.1 m diameter spherical buoys, fitted with a navigation light, flash sequence: Fl (5) Y 20s. 

 

Further details, including vessel informaiton, will follow ahead of deployment operations. 

 

 

Type See detailed map on our bulletin website
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Rig Move - Maersk Inspirer

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Deployment of Spherical Directional Waverider Buoy - Northern North Sea

Shell deployed a new wave buoy in the Northern North Sea on 05-October-2021. Colour: Yellow, Size: 0.9 diameter, Fl: 5 10s

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Rig - Haven

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Anchor Listing for Safe Caledonia at Elgin PUQ

The Flotel Safe Caledonia is alongside ELGIN PUQ – within 500m zone. Providing additional accommodation for ongoing fabric maintenance campaign. Anchor Location Listing

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Safe Caledonia at Elgin PUQ

The Flotel Safe Caledonia is alongside ELGIN PUQ – within 500m zone. Providing additional accommodation for ongoing fabric maintenance campaign. Duration extended to over Winter at site and recommence work in Spring 2022 to Oct 2022

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Deployment of Floating LiDAR Buoy - Berwick Bank Wind Farm

Mariners are advised that SSE Renewables will be deploying a floating LiDAR Buoy within the proposed Berwick Bank Wind Farm array area.

The LiDAR buoy will measure the wind conditions to provide valuable meteorological data to the offshore community that is needed for offshore wind resource characterisation

 

All locations referred to are outlined in Table 1 and displayed Figure 1 within the Notice to Mariners (provided as an attachment to this notice). These locations are all within the Berwick Bank Wind Farm (BBWF) in the outer Firth of Forth on the east coast of Scotland.

 

Expected arrival on site is 5th to 22nd November 2021 with the works completed the same day, weather conditions permitting. Therefore, we would like the validity period for this Notice to Mariners to be the 01 November 2021 – 30 November 2022 to allow for any eventualities during installation operations and also to cover any ongoing O&M activities throughout the deployment period.

Type See detailed map on our bulletin website
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Seagreen Offshore Windfarm - Foundation Grout Installation

Grout will be installed in the Wind Turbine Generator foundation suction caisson voids within the Seagreen site boundary

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install grout to the Wind Turbine Generator foundation suction caisson voids within the Seagreen Site Boundary. The vessel EDT Hercules will transport the grouting mix to site and set up at the requisite foundation location. A grout hose will be connected to the suction caisson with the grouting mixture being injected into the caisson void. A remotely operated vehicle (ROV) will also be utilised in this operation.

Type See detailed map on our bulletin website
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Carradale - Arran North and South Subsea Cables Charting Errors

The charted locations of the Carradale to Arran subsea electricity cables in the Kilbrannan Sound may be inaccurate and are being reviewed. Any corrections required will be issued as soon as possible. Mariners should be aware that the true cable locations may be up to ~300m from the presently charted positions. The location of this hazard notice is not indicative of any true cable location and is for information only.

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Fishing Hazard - Dons Fields Decommissioning Works

The Northern Producer FPF has been removed from it’s moorings and towed to port for decommissioning but the subsea assets within the Northern Producer FPF 500m zone will remain in place on the seabed and could pose a snag hazard to fishermen

The Northern Producer FPF has been removed from it’s moorings and towed to port for decommissioning but the subsea assets within the Northern Producer FPF 500m zone will remain in place on the seabed and could pose a snag hazard to fishermen therefore the Thistle Alpha Platform ERRV will act as a guard vessel until the 500m zone clearance is performed in 2022.

 

This includes the 8 No Risers draped over the Mid Water Arch (MWA), the MWA Clumpweight Guide Frame, the Riser Base Structure (RBS) and the surface laid pipelines / Umbilicals.  The MWA will remain in the water column at a depth of 112m and will remain tethered to the seabed via the clumpweight guide frame. The risers will remain draped over the MWA with one end on the seabed and the other end will remain connected to the RBS so that they remain stable. The existing stabilisation mattresses will remain in place over the surface laid pipelines/umbilicals.

Type See detailed map on our bulletin website
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Seagreen Offshore Wind Farm - Scour Protection Installation

Subsea Scour Protection rock installation will commence on the Seagreen Offshore Windfarm foundation structures within the site boundary.

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install seabed scour protection rock to the foundation structures within the site boundary. The Flexible Fall Pipe Vessel (FFPV) Bravenes will transport and install the rock on the seabed using its flexible fall pipe system. This allows the scour protection to be installed with a high degree of accuracy. An ROV at the end of the fall pipe will be utilised to control the flow of rock to the seabed.

Type See detailed map on our bulletin website
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Seagreen Offshore Windfarm - Deployment of a Guard Vessel

Due to construction activity commencing within the Seagreen development site a guard vessel will be deployed.

In conjunction with the commencement of wind turbine generator foundation installation activities, Seaway 7 will deploy a site Guard Vessel on behalf of Seagreen Wind Energy Ltd. The vessel will be deployed on or around the 01st October and will make six hourly VHF radio broadcasts containing information regarding the Seagreen development, including installation activity, safety zone information and site demarcation buoyage information. The first guard vessel to arrive will be the Renown FR246.

Type See detailed map on our bulletin website
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Construction work - Seagreen Offshore Windfarm

On behalf of Seagreen Wind Energy, Seaway 7 will commence installation of 114 three legged suction caisson foundation structures. The foundations will be towed from Nigg,Cromarty Firth.On arrival at site the foundations will be installed by the Heavy Lift vessel Saipem 7000.The tug Nicobar will assist the Heavy Lift vessel with barge mooring operations.Foundation grouting operations will take place from the vessel EDT Hercules. Installation is expected to commence on or around 1st October 2021.

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Wave Buoy Deployment - London Array Offshore Wind Farm

A Wave Rider Buoy will be deployed onsite from 24th September until further notice as part of ongoing monitoring of offshore conditions to support operations. Spectrum Offshore will be engaged to deploy the buoy. Description of wave rider buoy: Yellow spherical buoy, transparent top dome with solar panels and flashing light. Weight: 197kg Size: 1.10m Diameter. The buoy is connected to a subsea weight on a surface line. Vessels are requested to always maintain a 250m clearance around the buoy.

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Survey - Devil's Hole Horst (Ref: 1290)

A 71 Days Site Survey at Devil's Hole Horst using vessel Akademik Nemchinov call sign: UETM between 1st September 2021 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

North Sea Natural Resources Ltd

Akademik Nemchinov

UETM

N/A

01/09/2021 - 31/07/2022

For 71 Days

27, 28

Type See detailed map on our bulletin website
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Application for Offshore Development Area - Seagull Umbilical

Neptune E&P UK Ltd would like to request to establish an additional offshore development area in Block 22/29C for the Seagull Umbilical location.

The Seagull Field is located on UK licence P1622 Block 22/29C. 17km south of the Eastern Trough area Project (ETAP) Central Production Facility (CPF). Neptune will develop the Seagull reservoir as a subsea tie‐back to existing seabed infrastructure over the BP operated ETAP CPF. The development is high pressure and high temperature and Neptune is the Operator for the subsea development. Neptune will also drill and complete the Seagull Wells and shall retain overall Project responsibility.

The Seagull development will require installation of new subsea equipment as follows: Four Xmas Trees; a 4 slot manifold; a 17km control umbilical (including hydraulic, electrical and chemical supplies) direct from ETAP to Seagull; a 5km 10” production pipeline; a 5km 3.5” wash water pipeline from Seagull to the existing Egret manifold; and a Wye manifold adjacent to the existing Egret manifold, through which the new Seagull production pipeline will connect with the Heron cluster pipeline system connected back to the ETAP CPF. From ETAP CPF Seagull oil and gas will be exported to shore through the GAEL and FPS pipeline systems to the Kinneil Terminal onshore.

 

We already have an ODA established covering the Seagull drill centre and the Egret manifold and would like to request to extend the ODA to incorporate the entire Seagull works area. The extended Offshore development area will be required commencing from September 2021 ‐ March 2023.

 

 

Type See detailed map on our bulletin website
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Survey - Dunnottar Exploration Well VSP (Ref: 1270)

A 1 Day Vertical Seismic Survey between 31st August 2021 and 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Chrysaor Petroleum

Company U.K Limited

 

5m

31/08/2021 - 31/08/2022

For 1 Day

30

Type See detailed map on our bulletin website
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Pipeline Span - Dunbar to Alwyn: PL1043

Significant free-spans have been identified along the PL1043 Dunbar to Alwyn pipeline

Significant free-spans have been identified along the PL1043 Dunbar to Alwyn pipeline : Please exercise caution in these areas

Type See detailed map on our bulletin website
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Plugged and Abandoned Well : Sween

Sween UKCS 3/30 : Abandoned Wellhead (3/30-7)

No overtrawlability trial done yet, rough ground may be experienced.

Type See detailed map on our bulletin website
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Plugged and Abandoned Well : Balvenie

Balvenie UKCS 3/14: Abandoned Wellhead (3/14d-18)

No overtrawlability trial done yet, rough ground may be experienced.

Type See detailed map on our bulletin website
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