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Show PageFishSAFE 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... Show PageFishSAFE 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... Show PageTerms & 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 Show PageUseful Links
Oil & Gas UK Ltd FLTC Services Limited Scottish Fishermen's Federation National Federation of Fishermen's Organisation Kingfisher Information Services Show PageFunding
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... Show PageFeedback
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. Show PageAbout 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 ... Show PageRepair 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... Show PageData 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 ... Show PageUse 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... Show PageHow 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... Show PageLatest 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... Show PageGlossary
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... Show PageSeismic 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... Show PageMoorings
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... Show PagePipelines
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 ... Show PageSubsea 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... Show PageSurface 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... Show PageInteractive Video
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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 ... Show PageFishSafe 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... Show PageDownloads
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Show PageSubsea 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... Show PageSubsea 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... Show PageSubsea 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... Show PageOffshore 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. Show PageSubsea 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... Show PageSurface 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. Show PageSafety 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... Show PageMap
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Dropped steel cage/basket (West of Shetland)
A steel cage has been dropped from a fishing vessel following snagging and partial recovery. The cage is metal in construction and appears to be from the oil & gas industry. Dimensions: 1.7m x 1.7m x 1.6m (height). Weight: 132kg (in water); 575kg (in air)
Show MoreBrae Bravo Decommissioninig
Decommissioning and removal of the Brae Bravo Platform will be undertaken throughout 2021. Removal of topside modules and flare bridge will be undertaken ahead of removal of the main jacket in 2022.
Decommissioning and removal of the Brae Bravo Platform will be undetaken throughout 2021. Removal of topside modules and flare bridge will be undertaken ahead of removal of the main jacket in 2022.
Vessels will be operating near to and within the 500m safety zone as indicated.
Thialf
The Thialf will be alsongside the Brae Bravo platform between the 15th of April 2021 and the 24th of May 2021.
Bylgia
The Bylgia will enter the worksite between the 1st of May 2021 and 3rd of may 2021.
Sleipnir
The Sleipnir will be alsongside the Brae Bravo platform between the 15th of April 2021 and the 24th of May 2021. The Sleipnir will then return to the field to continue removal works circa 15th July2021.
Type See detailed map on our bulletin website
Seismic 2D Survey - RDI21 - MCG21001 (April to mid-May operations)
GeoexMCG will be acquiring the 'Regional Deep Imaging Project 2021' (RDI21) between April 15th and September 30th, 2021. The survey is a cross border 2D seismic survey in Norway, UK, Faroe Islands and Denmark.
The aim of the survey is to image deep seated crustal structures in the North Sea and a single source of 6,270 cu.in and one cable of 12 km length towed at 15-30m depth (slant) will be used. The survey will be carried out by the seismic vessel M/V Akademik Lazarev (UAJS) and Jan van Gent (YJVF4) will be the support vessel.
There will be two FLOs onboard, one Norwegian from Geograf Maritime and one from SFF Service Limited (Scottish Fishermen's Federation). In addition, the vessel will have MMO and PAM operators onboard.
Since RDI21 is a very regional survey, there will be some flexibility in deviating from the preplotted survey lines, if needed.
The survey has been divided into several notices where each notice contains the lines that are planned to be acquired within the time frame specified in the heading. The .png map shows the full RDI21 2D survey outline.
Type See detailed map on our bulletin websiteBuzzard Field - Pipeline bundle tow and installation
A pipeline bundle will be launched, towed to and installed in the Buzzard field.
A pipeline bundle will be transported using the Off Bottom Tow Mode (OBTM) and Controlled Depth Tow Method (CDTM). The bundle will be launched from Sinclair's Bay North of Wick and towed to the installation area suspended between one or more lead tugs and a trail tug and accompanied by a guard vessel and ROV support vessel.
Type See detailed map on our bulletin websiteConstruction of Wind Farm (Triton Knoll)
Activities are continuing related to the development of the Triton Knoll wind farm, as detailed below. For background information visit: http://www.tritonknoll.co.uk/
Mariners are advised of the following vessels commencing operations at the Triton Knoll Offshore Wind Farm as outlined below:
Vessel Name |
Type |
Call Sign |
MMSI |
IMO |
Operating Port |
Commence Date |
Margaret Mary | Guard Vessel | MGNM6 | 232025575 | N/A | Grimsby | 12/04/2021 |
Seacat Enterprise | Crew Transfer Vessel | MAPS9 | 232006483 | N/A | Grimsby | 24/02/2021 |
Mariners are advised of the offshore construction status at the Triton Knoll Offshore Wind Farm:
The following vessels continue to be active at the Triton Knoll as outlined within previously issued NtM's
Construction activities carried out over the previous 7 Days:
Construction Activities planned for the next 7 days:
*** 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:
|
Demarcation Buoys
Partrac Ltd have deployed x12 Demarcation Buoys and x2 Metocean Buoy at the Triton Knoll Offshore Wind Farm (TKOWF) to mark the perimeter of the TKOWF site boundaries.
Vessels are requested to leave a wide berth during the installation operations. The buoys will be deployed for a period of two years, and all equipment will be removed at the end of the installation.
Buoy |
Structure |
Latitude |
Longitude |
Individual Specification |
TK01 |
South Cardinal |
53°24.054'N |
000°57.935'E |
Pillar shaped with a south cardinal shaped top mark, exhibiting a Q (6) + L Fl 15s light character (5 nm nominal light range) RECOVERED |
TK02 |
Special Mark |
53°24.568'N |
000°54.433'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range) |
TK03 |
Special Mark |
53°26.132'N |
000°50.008'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range) |
TK04 |
Special Mark |
53°27.457'N |
000°45.927'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range) |
TK05 |
South Cardinal |
53°28.859'N |
000°41.181'E |
Pillar shaped with a south cardinal shaped top mark, exhibiting a VQ (6) + L Fl 10s light character (5 nm nominal light range) RECOVERED |
TK06 |
Special Mark |
53°30.807'N |
000°41.826'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range) |
TK07 |
North Cardinal |
53°32.196'N |
000°44.248'E |
Pillar shaped with a north cardinal shaped top mark, exhibiting a Very Quick (VQ) light character (5 nm nominal light range) |
TK08 |
Special Mark |
53°32.444'N |
000°47.678'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range |
TK09 |
North Cardinal |
53°32.428'N |
000°52.040'E |
Pillar shaped with a north cardinal shaped top mark, exhibiting a Q light character (5 nm nominal light range) |
TK10 |
Special Mark |
53°29.595'N |
000°55.306'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5 second (s) light character (5 nm nominal light range) |
TK11 |
Special Mark |
53°26.979'N |
000°57.974'E |
Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range) |
TK12 |
East Cardinal |
53°24.368'N |
001°00.228'E |
Pillar shaped with an east cardinal shaped top mark, exhibiting a Q (3) 10s light character (5nm nominal light range) |
TK13 |
Metocean Buoy |
53°26.002'N |
000°55.091'E |
Triaxys metocean wave and current buoy (South) exhibiting a Fl (5) Y 20s light character (3 nm nominal light range) |
TK14 |
Metocean Buoy |
53°30.581'N |
000°47.944'E |
Triaxys metocean wave and current buoy (North) exhibiting a Fl (5) Y 20s light character (3 nm nominal light range) |
Mariners are advised that all foundations monopiles have been installed and all inter-array and export cables have been installed, buried and need to be assumed as energised / live at all times.
Local Notice to Mariners Recently
NtM 001-2021 (05th January 2021)
NtM 002-2021 (20th January 2021)
NtM 003-2021 (17th March 2021)
NtM 004-2021 (24th March 2021)
NtM 005-2021 (06th April 2021)
Type See detailed map on our bulletin websiteSurvey - Glengorm South Appraisal Well VSP (Ref: 1134)
A 2 day Geological Glengorm South Appraisal Well VSP from the drilling Rig from 16th April 2021.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
CNOOC Petroleum Europe Limited |
N/A |
2m 5m |
16/04/2020 For 2 Days |
22 |
Power Cable Replacement Operations - Forties Field
Power Cable Replacement Operations between Forties Alpha Satellite Platform to Forties Echo Platform (MV Normand Cutter) mob date 19th April 2021
Show MorePenguins Field - Vessel Activity
Penguins Field Development - Bundle XT Tie-ins and DC2 Bundle XT Tie-ins
Seven Atlantic DSV – FPSO Bundle XT Tie-Ins (Subsea 7) Penguins Redevelopment Project - Infield 20/03/21 – Depart Field 03/04/21
Greenfield tie-in work within the Penguins field, connecting the 3 new DC7 flowbases to the newly installed FPSO bundle. The scope will include barrier testing, spool deployment and installation, TSCJ installation and subsequent mattress and grout bag protection works.
Seven Oceanic RSV – Wet Store Spools Ph1 (Subsea 7) Penguins Redevelopment Project - Infield 10/04/21 – Depart Field 20/04/21
Main scope will include the wet storing of new tie-in spools within the Penguins Field and also the Brent C 500m zone. Additional activities will include the installation of concrete corner blocks adjacent to the newly installed towheads and the recovery of buoyancy tanks from the newly installed bundle systems.
Seven Atlantic DSV – DC2 Bundle XT Tie-Ins (Subsea 7) Penguins Redevelopment Project - Infield 05/05/21 – Depart Field 19/04/21
Greenfield tie-in work within the Penguins field, connecting the PAN-N and Tybalt flowbases to the newly installed DC2 bundle. The scope will include barrier testing, spool deployment and installation, TSCJ installation and subsequent mattress and grout bag protection works.
Type See detailed map on our bulletin website
Seagreen LIDAR buoy removal
A LIDAR buoy will be removed from the the Seagreen Offshore Wind Farm site boundary.
On behalf of Seagreen Offshore Wind Farm Ltd, Fraunhofer IWES will permanently remove a LIDAR buoy located within the Seagreen site boundary. The work boat Isle of Jura is expected to conduct the works on or around the 12th of April, weather permitting.
Type See detailed map on our bulletin websiteRig Move - Maersk Resolve
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Seafox 4
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreClean Seas Environmental Monitoring Programme (CSEMP)
The Clean Seas Environmental Monitoring Programme (CSEMP) will use a Granton trawl to target dab for fish disease and chemical body burden analysis. The survey will also collect sediment samples from representative sediment stations using day grab.
This work is being undertaken to evaluate sediment contamination levels and benthic community abundance at a number of locations around the English coastline. The information generated during this survey will be used to meet UK’s obligations for reporting of contaminant, eutrophication and marine litter data to MERMAN and the ICES database and for subsequent assessments for OSPAR and Good Environmental Status (GES descriptors 5, 8, & 10) assessment as part of the 25 year Environmental Plan.
Fishing stations Farne 55°29.712’N 1°7.578’W Amble 55°17.802’N 1°15.3’W Off Tyne 55°0.498’N 1°7.998’W North Dogger 1 55°18.138’N 2°53.832’E North Dogger 2 55°4.08’N 2°5.4’E West Dogger 54°49.998’N 1°15.3’E Dogger Central 54°30.912’N 2°41.43’E North east Dogger ad 55°30.24’N 4°9.15’E Tees Bay 54°45.582’N 1°8.382’W Off Tees 54°43.998’N 0°52.998’W Flamborough 54°14.502’N 0°29.298’E Off Humber 54°3.798’N 1°47.4’E Outer Humber 53°19.002’N 0°25.698’E Indefatigable Bank 53°33.402’N 2°4.92’E Inner Wash 53°8.502’N 0°33.3’E Thames Gabbard 52°0’N 2°19.998’E Rye Bay 50°52.002’N 0°48.498’E Off Newhaven 50°45.588’N 0°0’E Smiths Knoll 52°48.666’N 2°45.33’E Alternative Smiths knoll 52°43.908’N 2°27.51’E Smiths knoll bank 52°46.476’N 2°17.25’E
Sediment Stations CSEMP245 55°0.498’N 1°7.998’W CSEMP295 54°43.998’N 0°52.998’W CSEMP285 54°49.998’N 1°19.998’E CSEMP345 54°0’N 2°0’E CSEMP376 53°19.998’N 0°34.998’E CSEMP386 52°58.98’N 0°20.082’E CSEMP475 52°0’N 2°19.998’E
Type See detailed map on our bulletin websiteSofia OWF - Turbine Array Seabed Operations
Mariners are advised that Gardline on behalf of Sofia Offshore Wind Farm Limited will be undertaking Seabed Operations within the Sofia Offshore Wind Farm turbine array.
The seabed operations are being undertaken by the M.V. Ocean Vantage and are expected to commence within the area from 7th April 2021 and last for approximately one week. All vessels are requested to remain at least 500 m clear.
Operations with the Ocean Vantage will be conducted on a 24-hour basis.
Vessel Name | Ocean Vantage |
Call Sign | HP6188 |
MMSI | 351149000 |
ISMO | 8405440 |
The following table details coordinates for the area of operations at the Sofia Offshore Wind Farm turbine array.
I.D | Latitude (DDM) | Longitude (DDM) |
1 | 55 11.049N | 002 11.082E |
2 | 54 58.641N | 002 33.221E |
3 | 54 48.370N | 002 15.792E |
4 | 55 00.726N | 001 53.669E |
Type See detailed map on our bulletin website
Boyla 4D towed streamer survey (ABP21001)
Aker BP ASA is conducting a 4D towed streamer acquisition with PGS Geophysical AS. The vessels on the field will be Ramform Vanguard and Sanco Chaser. This is a cross border seismic survey, with the main part of the survey on the Norwegian side.
AkerBP ASA is conducting a 4D seismic survey over the Boyla field. It is anticipated that the UK section will take a maximum of four days to complete. The Survey Area at Boyla will cover 37 square kilometres in UK waters. The Greater Work Area will cover 151 square kilometres in UK water. The Company will conduct line changes in the greater work area.
Type See detailed map on our bulletin websiteConstruction of wind farm - Moray East
Due to the construction of the Moray East Offshore Wind Farm, there are several elements to this notice - safety zones; construction schedule; and buoy positions.
For background information about Moray East, please visit: www.morayoffshore.com/moray-east
Safety Zones
Please be advised that the Scottish Ministers have authorised the use of the safety zones during construction and operation of the Moray East Offshore Wind Farm as detailed below.
During construction
- A 500 metre radius around each WTG and OSP where construction works are taking place that include sensitive activities being undertaken by vessels RAM. A maximum of three of such zones is permitted at any one time.
- A 50 metre radius around partially completed WTGs and OSPs where work is not underway and the risk assessments identify a need.
- A 50 metre radius around each completed WTG and OSP prior to commissioning and as required by a risk assessment process.
During major maintenance
- A 500 metre radius around all major maintenance works being undertaken around the WTGs and OSPs. No more than one major maintenance zone is permitted at any one time.
Construction Activities
It is currently anticipated that weather permitting offshore construction works will be carried out on a continuous basis (i.e. 24 hour working, seven days a week) unless notified otherwise.
Please be aware that by virtue of its mode of operation and the equipment deployed, construction vessels listed in the table below may be Restricted in their Ability to Manoeuvre as defined under COLREGS (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe distance from these vessels of 500 metres when they are undertaking it work and showing the appropriate shapes and lights. Further Notice to Mariners will be issued as construction progresses.
Company, Vessel & Call Sign |
Survey Area |
Survey Area |
Start Timeframe & Duration |
GV Replenish MASY7 |
As above |
As above |
1st May 2019 for approximately 34 months |
GV BOUNTIFUL MJLF4 |
As above |
As above |
30th April 2020 for approximately 20 months |
NSL Challenger |
As above | As above | 07th March 2021 until further notice |
Windcat19 2ATD3 |
As above | As above | 20th August 2020 Until further notice |
Windcat 6 MXFD |
As above | As above | from September 23rd 2020 onwards |
GV Kinnaird GHNE |
As above |
As above |
16th July 2020 Until further notice |
GV Ability | As above | As above | 16th July 2020 Until further notice |
Acta Centaurus |
As Above | As Above | 21st January 2021 until further notice |
World Bora OWJW2 |
As above | As above | 1st October 2020 Until further notice |
HST Harri | As above | As above | 28th January 2021 Until further notice |
Windcat 40 | As above | As above | 4th Feb 2021 until further notice |
Bold Tern | As above | As above | 5th Jan 2021 until further notice |
Ndeavor | As above | as above | 4th March 2021 until further notice |
Grand Canyon 3 | As above | As above | 30th March until further notice |
Siem Day | As above | As above | 21st March 2021 until further notice |
Waterfall | As above | As above | 30th March 2021 until further notice |
MHO Gurli | As above | As above | 07th April 2021 until further notice |
Rolling Stone | As above | As above | 09th April 2021 until further notice |
Type See detailed map on our bulletin website
Rig Move – Ensco 92 to Victor Field
Chrysaor plan to move the Ensco 92 Jack-up drilling rig from the Viking field location to the Victor field location perform abandonment operations on the Victor JM 49/17-11 development well.
Destination: Victor JM 49/17-11 development well 53° 21' 03.22" N 2° 17' 43.46" E Throughout well abandonment operations there will be a dedicated ERRV on location monitoring the surrounding sea area
Type See detailed map on our bulletin websiteMinor secondary works from CTV Waterfall
Please be advised that Moray Offshore Windfarm (East) Limited will be carrying out minor secondary works on various locations within bounds of the Offshore windfarm.
Please be advised that Moray Offshore Windfarm (East) Limited will be carrying out minor secondary works on various locations within bounds of the Offshore windfarm. The Works will be ongoing to approximately 18.04.2021, operating from the Port of Buckie or Wick using the CTV Waterfall.
Type See detailed map on our bulletin websiteScour Protection Operations
Moray Offshore Windfarm (East) Limited (Moray East) are planning to re- commence scour protection operations work scope at five locations within the bounds of Moray East Offshore Windfarm circa 09th April 2021.
Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to re- commence scour protection operations work scope at five locations within the bounds of Moray East Offshore Windfarm circa 09th April 2021.
The locations of each of the four assets where scour protection will be installed is shown in figure 1 and table 1.
The work will comprise of rock dumping from the Rollingstone via fall pipe, area covered on each asset location is shown in figure 1 below.
Type See detailed map on our bulletin websiteHDD Works at Boygrift, Lincolnshire - Viking Link Project
HDD (Horizontal Directional Drilling) works at Boygrift, Lincolnshire (English Landfall) planned for the Viking Link project which is a HVDC electricity transmission interconnector between Denmark & England,a joint venture National Grid and Energinet.
The HDD marine works are planned to commence on 25th February 2021 with expected completion in UK waters by the end of April 2021.
The HDD works cover the installation of two separate high-density polyethylene (HDPE) pipes, in separate drilled holes. Total length of each drilling is approximately 550m which will be progressed from the land side to the marine exit point.
The pipes to be installed are expected to arrive at the pipe temporary storage area outside King’s Lynn Port, having been towed from Norway between mid-February (first pipe) and late March (second pipe). The pipes will be stored at this site and transported individually for the installation works at the appropriate time. The installation (‘pullback’) of both pipes is expected to be completed by the end of April 2021.
The HDD marine works are being managed by Prysmian PowerLink carried out by Maritech International Ltd using the following vessels:
- HAVEN SEARISER 4 - Jack Up Barge (JUB) as the main marine support platform for the HDD back reaming works and pipe pullback, as well as a support platform for the excavation works
- Forth Drummer - for pipes transportation from King’s Lynn port to site and assistance to the HDD operations.
- Odin - Tug for HDD pipes transportation from Norway to King’ Lynn port
- Ariel - for crew transfers, if needed, during the operations.
- CRC Galaxy - for diving support only.
- Tristar, Catalina and Viscount - for support boats for the management of pipes installation as well as for the MBES survey works
Vessels:
Jackup Barge - Haven Seariser 4 call sign: 2IWO5
Multicat - Forth Drummer call sign: 2FIG9
DSV CRC - Galaxy call sign: 2JIT4
Crew Transfer - Ariel call sign: MEJB2
Support Vessel - Tristar call sign: 2FQW9
Support Vessel - Viscount call sign: 2FQW7
Support Vessel - Catalina call sign: 2FQW6
Ocean Tug - Odin call sign: OXIM2
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 maneuverability as it completes its work scope.
The Communication between the JUB and rest of the vessels will be through CH67 & 72.
HDD Works The JUB (“Heaven Seariser 4”) is planned to sail to the exit location of the HDD prior the completion of the drilling of each bore. Interface with the drilling rig will require diver intervention and support throughout its works.
The Ocean Tug (“Odin”) vessel will transport HDD pipe form Norway to King’s Lynn port for temporary storage prior to pipes installation.
While the HDD team onshore and the JUB (“Heaven Seariser 4”) team are preparing for the pipe pull in through the drilled bore, the Multicat “Forth Drummer” will collect the HDPE pipe from the mooring place in King’s Lynn port and transport it to the working site at Boygrift. The product pipe to be installed shall be positioned at the HDD exit point and supported by the marine spread.
On completion of the pullback operations the pipe ends will be exposed via excavation and the verification of the depth of the pipes below the seabed level shall be performed by conducting a MBES survey.
Type See detailed map on our bulletin websiteInter Array cable Termination and testing
Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are carrying out Inter Array Cable Testing and Termination Works within the bounds of site 1.
Inter Array Cable Termination and Testing.
Personnel and equipment for these works will be based on the Offshore Support Vessel, Siem Day. Personnel and equipment will be transported by Siem Day between OSPs and WTGs. Deep Cygnus and Siem Day will both be completing Testing and Termination works on the cable routes identified in Figure 3.
Siem Day will be restricted in their ability to manoeuvre during transfer of personnel and equipment to and from the OSPs and WTGs.
The overall work scope will be carried out in 2 campaigns – Campaign 1 commencing 11/11/20 to 23/01/21, now complete, and Campaign 2 commenced 24/02/21 and is scheduled to be completed on 11/06/21
Type See detailed map on our bulletin websiteMarine recorder mooring service, removal and installation.
The University of Aberdeen will be servicing existing hydrophone moorings in the Moray Firth, and will also be removing some existing moorings, and installing additional moorings.
Show MoreDogger Bank A & B Nearshore UXO Inspection and Clearance
The survey vessel Noordhoek Pathfinder will investigate previously identified, potential Unexploded Ordnance (UXO) in the nearshore section of the Dogger Bank A and B Export Cable Corridors (ECC).
Operations will be conducted on a 24-hour basis from a Dynamically Positioned (DP) vessel deploying a Remotely Operated Vehicle (ROV) to conduct the inspection works.
The works will not involve towing of equipment along the ECC.
Vessels are requested to maintain a minimum 1000m separation distance.
During operations the vessel will be restricted in its ability to manoeuvre and will display the appropriate day shapes and lights and will be monitoring VHF Channels 16 and 12.
During the operation, if any UXO are identified, disposal works will be initiated and a separate NtM will be issued.
Type See detailed map on our bulletin websiteHavhingsten Cable - burial works (Irish Sea)
Please be advised that the remaining post-lay burial works of the Havhingsten fibre optic telecommunication cable system are planned to commence early April 2021 in the Irish Sea.
Please be advised that the remaining post-lay burial works of the Havhingsten fibre optic telecommunication cable system are planned to commence early April 2021 in the Irish Sea.
The supplier of the Havhingsten cable is Alcatel Submarine Networks (ASN). Intertek are the environmental and permitting consultants.
Cable burial will be undertaken by the ASN Ile d’Aix vessel. The cable will be post-lay buried (PLIB) using Remotely Operated Vehicle (ROV) water jetting. The burial progress speed is normally between 0.5 – 1 km/hour and subject to seabed type, burial depth and weather.
Planned timings of PLIB works are as per below:
Segment |
Area |
Latitude |
Longitude |
Distance (km) |
Planned start date |
Duration |
S1.5 |
Area 01 – Hibernia/GTT Crossing |
53° 45.0953'N to 53° 44.9188'N |
003° 24.0854'W to 003° 24.4559'W |
0.522 |
Early April to early May 2021 |
1d |
S1.5 |
Area 03 – Port Grenaugh Integration |
53° 50.4663'N To 53° 50.5634'N |
004° 34.5189'W To 004° 34.8442'W |
0.399 |
Early April to early May 2021 |
1d |
S1.4 |
Area 01 – Hibernia/GTT Crossing |
53° 55.3559'N To 53° 55.0624'N |
004° 34.0032'W To 004° 34.0055'W |
0.544
|
Early April to early May 2021 |
1d |
S1.4 |
Area 02 – Western HVDC Crossing |
53° 53.9806'N To 53° 53.6811'N |
004° 34.1958'W To 004° 34.1574'W |
0.557
|
Early April to early May 2021 |
1d |
S1.4 |
Area 03 - Port Grenaugh BU Integration |
53° 50.6516'N To 53° 50.5634'N |
004° 34.4844'W To 004° 34.8442'W |
0.427
|
Early April to early May 2021 |
2d |
S1.3 |
Area 01 - Port Grenaugh BU Integration |
53° 50.5634'N To 53° 50.5701'N |
004° 34.8442'W To 004° 35.1360'W |
0.320
|
Early April to early May 2021 |
2d |
S1.3 |
Area 02 |
53° 50.9898'N To 53° 50.7722'N |
004° 59.0029'W To 004° 59.8411'W |
0.866
|
Early April to early May 2021 |
1d |
S1.2 |
Area 01 |
54° 02.4019'N To 54° 02.3343'N |
004° 54.4595'W To 004° 54.5145'W |
0.139
|
Early April to early May 2021 |
1d |
S1.2 |
Area 02 – Hibernia/GTT crossing |
53° 56.0771'N To 53° 55.7882'N |
004° 58.0798'W To 004° 58.1664'W |
0.545
|
Early April to early May 2021 |
1d |
S1.2 |
Area 03 – Western HVDC Crossing |
53° 54.8486'N To 53° 54.5411'N |
004° 58.3330'W To 004° 58.3772'W |
0.573
|
Early April to early May 2021 |
1d |
S1.2 |
Area 04 |
53° 51.1338'N To 53° 50.7723'N |
004° 59.1194'W To 005° 00.2870'W |
0.581
|
Early April to early May 2021 |
1d |
All fishing vessels are requested to maintain an appropriate and safe distance of 500 m when passing the cable burial vessel whilst operational and should pass at the lowest possible speed to avoid vessel wash effects.
Vessels will be working throughout 24 hours and will display appropriate day shapes and lights during reduced visibility and night operations.
Cable Installation Support Vessel: Ile d’Aix
(Installation support vessel working post-lay inspection and burial (PLIB))
Length Overall: 151.54 m
Breadth: 21.60 m
Following PLIB burial works there will be a maximum of 25m of cable surface laid with Uradact protection either side of the crossings listed below. Rock protection works will be carried out during the second half of 2021. It is advised that extra care is taken when vessels are operating near the areas and that no vessel should trawl within 0.25 nautical miles from the listed coordinates prior to rock placement. The rock berms will be over trawlable and in-line with industry standards.
Rock Placement Location Name |
Latitude |
Longitude |
Western HVDC (S1.5) |
53 ° 45.9867' N |
003° 48.9137' W |
Western HVDC (S1.2) |
53° 54.7007' N |
004° 58.3552' W |
Western HVDC (S1.4) |
53° 53.8396' N |
004° 34.1792' W |
For further information please contact the Fisheries Liaison Officer (FLO) / Fishing Industry Representative (FIR) numbers:
IoM Onshore FLO
Guy Sutton: rgsutton@outlook.com – 07624428332
FIR
Tom Watson: tomwatsonfleetwood@btinternet.com – 07903 173624
FLO (MarineSpace)
Bethan Owens: bethan.owens@marinespace.co.uk – 07833 557808
Claire Griffiths: claire.griffiths@marinespace.co.uk – 07498 550 586
Type See detailed map on our bulletin websiteDogger Bank B Geophysical Survey
The survey vessel, Fugro Venturer, will conduct a geophysical survey at the Dogger Bank B wind farm (DBB) array site
Fugro Venturer, will conduct a geophysical survey at the Dogger Bank B wind farm (DBB) array site in the Southern North Sea, between 4th April 2021 and approximately 25th May 2021. Survey operations will be continuous, 24 hours a day, the vessel towing subsea sensors up to approximately 100m behind the vessel. During operations the vessel will be restricted in its ability to manoeuvre and will display the appropriate day shapes and lights.
The Fugro Venturer will be surveying prescribed survey lines, which will require large turning circles. It is therefore requested that all vessels maintain a minimum 2,000m separation distance from the survey vessel and pass at reduced speed.
Type See detailed map on our bulletin websiteSurface-Laid Cable - Havhingsten Project, Irish Sea
There are 5 areas in the Irish Sea where the Havhingsten cable has been surface-laid. The exposed cables are subject to burial works, now expected to commence early April.
All Mariners are advised to avoid the area and to take extra care when operating near these areas. It is advised that vessels should not trawl within the boundary box of the exposed cable sections as listed.
Type See detailed map on our bulletin websiteSurvey - 30km off the Coast of Ramsgate
Pole mounted multibeam echo-sounder survey of a subsea cable, approximately 30km of off the Coast of Ramsgate.
Show MoreSnagging Hazard - Dropped Object Clump Weight (360kg)
The dropped object is a clump weight (360kg). This is part of the DP taut wire system. From C10 the clump weight lays 162m north of the structure. The object rests 8m east of C10-C11 RPL.
JSA and Task plan are being compiled for a recovery with vessel crane and ROV intervention.
Type See detailed map on our bulletin websiteSnagging Hazard - Dropped Object Weight 115kg
Wireless telemetry basket containing measuring 1.4 m x 1.4 m and weighs 115 kg when submerged.
As part of the initial drilling operations in 2019, the wellhead assembly was fitted with a cap containing a transponder for the relaying of monitoring data from downhole gauges and a basket was placed on the seabed adjacent to the well containing associated wireless telemetry equipment.
It has now been observed that both the cap and the basket are no longer present.
PFML are on location conducting an ROV based visual inspection of the suspended Well 205/26b-14 in the Lincoln field west of Shetland. The Olympic Taurus arrived at the well location and deployed the ROV for inspection at the seabed. On inspection neither the cap or basket were present.
No instances of snagged fishing gear or other debris have been identified on the wellhead.
The risk is that trawled gear may snag on the basket and cause damage. It is expected that he basket is too light to trap the vessel and cause any significant threat. The cap is smaller, so there is a risk the nets may lift the cap to surface and cause a risk to personnel on the vessel. However, as the cap is now off the wellhead, it is likely to be sitting flush with the seabed and is unlikely to be picked up by gear working in this area, as it is typically designed to bounce over the top of seabed obstacles (like the many boulders in the area).
The vessel and ROV has conducted a search around the well, 250 m x 250 m grid with 20m line spacing, and not identified the objects.
PFML intend to go back to abandon the well this year, which would include an as left survey, so further efforts will be made then to locate and recover. If not found, no other action will be taken.
Type See detailed map on our bulletin websiteMagallanes ATIR Installation
Leask Marine will be installing Magallanes ATIR platform at EMEC test site, Fall of Warness
Please find attached the following Notice to Mariners for Leask Marine operations:
LM-NTM-MAG-R01-ATIR INSTALLATION
Leask Marine moorings will be onsite for the stated duration.
Mooring buoys are marked with Colour yellow - flash yellow light – 1 FY5s – Light range 1nm. During peak times of tide, buoys may be submerged.
The device is marked with Colour yellow - flash yellow light – 1 FY5s – Light range 3nm
Vessels are requested to maintain a safe distance of 250 meters from the submitted coordinates.
Dates: 17th March to 17th April
Main Vessel: C-Fenna, Odin, ATIR, Uskmoor, C-Spartan
Location: Fall of Warness
Client: Magallanes
Type See detailed map on our bulletin websiteTemporary Mooring - Magallanes
Magallanes ATIR tidal platform temporary mooring
Please find attached the following Notice to Mariners for Leask Marine operations:
LM-NTM-MAG-R01-TEMP MOORING
Leask Marine moorings will be onsite for the stated duration.
The device is marked with Colour yellow - flash yellow light – 1 FY5s – Light range 3nm
Vessels are requested to maintain a safe distance of 250 meters from the submitted coordinates.
Dates: 17th March to 17th April
Main Vessel: C-Fenna, Odin, ATIR, Uskmoor, C-Spartan
Location: Deerness Anchorage
Client: Magallanes
Type See detailed map on our bulletin websiteCable Protection Works - SHEFA
Leask Marine LTD has been contracted to undertake the installation Shefa cable securing brackets.
Please find attached the following Notice to Mariners for Leask Marine upcoming operations:
LM-NTM-SHE-R01-Cable Securing
Leask Marine moorings will be onsite for the stated duration.
Colour yellow mooring buoys are marked with - flash yellow light – 1 FY5s – Light range 1NM
Vessels are requested to maintain a safe distance of 350 meters from submitted coordinates.
EXTENDED: 1st May
Main Vessel: C-Odyssey
Location: Water Sound
Client: Shefa
Type See detailed map on our bulletin websiteDecommissioning Ops - Wello Penguin
Wello Penguin Decommissioning Ops using Vessel C-Odyssey from 1st March to the 1st May 2021
Please find attached the following Notice to Mariners for Leask Marine upcoming operations:
LM-NTM-S30-Wello Decommissioning Ops
Vessels are requested to maintain a safe distance of 450 meters from submitted coordinates.
Extended to 1st of May
Main Vessel: C-Odyssey
Location: EMEC Test Site Billia Croo
Client: Orcades Marine
Type See detailed map on our bulletin website
Turbine Foundation Surveys - Burbo Bank OWF
Operations of a remotely piloted Unmanned Surface Vessel (USV) are planned at Burbo Bank and Burbo Bank Extension Wind Farm conducting survey operations within the Offshore Wind Farm.
Activity: Operations of a remotely piloted Unmanned Surface Vessel (USV) are planned at Burbo Bank and Burbo Bank Extension Wind Farm conducting survey operations within the Offshore Wind Farm
.
Dates: Tuesday 30th of March for up to 3 days until 1st April 2021..
Vessel Details:
- Name: X 03 UNMANNED
- MMSI: 232019976
- Length: 4.5m
- Beam: 2.2m
- Speed: 3.5kts
- Draught: 1.0m
- Tonnage: 750kg
Location: The USV will be launched from Rhyl harbour and transit directly to the Offshore Wind Farm. The USV will be working within the Offshore Wind Farm limits.
A support RIB “Maverick” will escort the USV throughout the operations from Rhyl harbour and will then continue transiting towards the survey site until the area is safe & clear of hazards.
It is requested that other vessels remain clear, so far as is practicable, during transit & survey operations.
Type See detailed map on our bulletin websiteExport Cable Installation - Triton Knoll Offshore Wind Farm
Please be advised that vessels will be undertaking survey operations in the Triton Knoll Offshore Wind Farm export cable corridor.
For further information: Lee Cornwall, Triton Knoll Offshore Wind Farm, Tel: +44 (0) 7384 807293, email: l.cornwell@tritonknoll.co.uk
Triton Knoll Marine Coordination Centre, Mob Tel: +44 (0) 7384 807528, Tel: 0045 8213 6219, Email: tkmcc@smchse.com
Type See detailed map on our bulletin websiteRig Movement - Seajacks Leviathan
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreRig Movement - Deepsea Nordkapp
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreRig Movement - Safe Caledonia
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreRig Movement - Seafox 2
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreRig Movement - Deepsea Atlantic
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreRig - COSL Innovator
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Ensco 92
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreThames Pipeline PL370 - Inspection
During April and May 2021 Titan Environmental, on behalf of IOG, will be performing a survey along the Thames pipeline to determine burial.
The work will consist of using the vessel Titan Discovery, equipped with vessel mounted and towed sensors to scan the seabed, over and on either side of the pipeline, with no intrusive works.
Type See detailed map on our bulletin websiteSafe Boreas accommodation vessel in Buzzard field
The Safe Boreas accommodation vessel is mobilising to the Buzzard field on April 18th 2021 for a maximum of 190 days
The Safe Boreas accommodation vessel is being located into the Buzzard field for the turnaround period, beginning on the 18th April 2021. The accommodation vessel will use dynamic positioning and will be located within the 500 m exclusion zone of the Buzzard Platform for up to 190 days. The Safe Boreas will be linked to Buzzard QU Platform via a gangway interface.
Type See detailed map on our bulletin websiteSubsea installations in Buzzard Field
The Seven Falcon DSV is scheduled to mobilise 3rd April to carry out subsea installations in the Buzzard Field
The Seven Falcon DSV is scheduled to mobilise 3rd April to install the umbilical’s and complete the installation of the water injection tie in spool to the Central Water Injection flowline in the Buzzaard Field. Mobilisation activities and transit to field are estimated to take 1.5 days, post DP trials umbilical installation should commence 5th April.
Type See detailed map on our bulletin websiteSite and Pipeline Survey - Southwark Field (Ref: 1209)
Independent Oil and Gas (IOG) is developing the Southwark Field, involving the installation of a platform and pipeline connection to the Thames pipeline. This notice advises of survey activities being performed in advance of the installation.
During March & April 2021 Titan Environmental, on behalf of IOG, will be performing surveys, primarily located at the platform location, with additional surveys along the pipeline route to the south:
- a pre-installation debris and bathymetric survey for the platform will cover an area approximately 700-metres x 700-metres, centred at the proposed Southwark location, as listed below,
- a pre-installation debris and bathymetric survey of the proposed 24-inch pipeline between the proposed Southwark platform location and the Thames pipeline.
The work will consist of using vessel mounted and towed sensors to scan the seabed, with no intrusive works.
Type See detailed map on our bulletin websiteKincardine Offshore Windfarm - Development
Horizon Artic call sign: CHA2033 will shortly begin a campaign of moorings installation at the Kincardine offshore wind farm.
Additional work will be continuing for the commissioning of the turbine, requiring regular crew boat transfers on a daily basis.
The floating wind turbine KIN-03 complete with assembled wind turbine is moored in its operational location.
Location | Light | Sound Signal | |
North Corner (with Turbine C1) | 56°59.356’N 001°51.983’W | Yellow every 5 seconds | - |
South East Corner (C2) | 56°59.340’N 001°52.037’W | Yellow every 5 seconds | Morse “U” every 30 seconds |
South West Corner (C3) | 56°59.322’N 001°51.984’W | Yellow every 5 seconds | - |
KIN-03-ML1 Anchor As-Built | 56°59.587’N 001°51.749’W | N/A | N/A |
KIN-03-ML2 Anchor As-Built | 56°59.338’N 001°52.518’W | N/A | N/A |
KIN-03-ML3 Anchor As-Built | 56°59.048’N 001°51.709’W | N/A | N/A |
Horizon Artic call sign: CHA2033 will shortly begin a campaign of moorings installation at the Kincardine offshore wind farm.
Estimated Arrival of the Horizon Arctic in the field will be 01/04/2021 and the duration of the installation will be about 7 days. The works expected are as follows:
KIN-02 | 56°59.835'N 01°52.428'W |
KIN-05 | 57°00.632'N 01°50.861'W |
KIN-01 | 57°00.318'N 01°52.870'W |
Cable Guard Vessel: MV Fisher Boys FR54 call sign: MXHY7
Type See detailed map on our bulletin website
Survey - Dogger Bank B Windfarm
The Fugro Venturer is due to undertake a Geophysical survey at the proposed Dogger Bank B windfarm location in the Southern North Sea, 193 kilometres East of Newcastle, between 4th April 2021 and approximately 25th May 2021.
Survey operations shall be conducted 24 hours a day and the vessel shall tow subsea sensors approximately up to 100m behind the vessel. During operations the vessel will have restricted manoeuvrability. The Fugro Venturer will be surveying prescribed survey lines, which will require large turning circles, therefore, it is requested that all vessels operating within this area keep their distance, maintaining at least the 2,000 m exclusion zone around the vessel and pass at reduced speed.
Type See detailed map on our bulletin websiteSurvey - 2AFRICA SUBSEA CABLE SYSTEM
Alcatel Submarine Networks has contracted Fugro to carry out a cable route survey for the proposed 2Africa cable systems. MV Fugro Meridian - Call Sign: C6QR4.
Please be advised that Fugro will be carrying out marine operations on behalf of Alcatel Submarine Networks for the 2AFRICA SUBSEA CABLE SYSTEMS.
The operations along the route will be carried out from approximately 5 December for approximately eight weeks. The exact finish date will be dependent on the prevailing weather conditions and work progress.
The vessel will be running a hull mounted multibeam echo sounder along several lines in a 500 to 1000 metre wide corridor centred on the proposed route. Towing equipment such as magnetometer and side scan sonar will be used throughout the works. Time to time the vessel will slow down or stop to measure water properties, as well as perform geotechnical measurements, necessary for this kind of study.
It is requested that all vessels operating within this area keep their distance, maintaining at least a 1000 metre exclusion zone, and pass at minimum speed to reduce wake interference over the sensor readings.
Type See detailed map on our bulletin websiteGwynt y Môr Cable Repairs
A section of the Gwynt y Môr subsea cable is currently raised approximately 2m from the seabed. It is advised that extra care is taken when vessels are operating near these areas and that no vessel should trawl within 250m of the area.
Please be advised that during repairs of the Gwynt y Môr subsea cable a section of cable has been left raised approximately 2m off of the seabed. Guard vessels remain on site when weather permits, however it is advised that extra care is taken when vessels are operating near these areas and that no vessel should trawl within 250m of the given coordinates.
This work started in January, and is now expected to be completed by the 29th March 2021. In the coming days a fixed yellow special marker buoy will be deployed by Trinity House to mark the location of an exposed cable bight which is sitting approximately 2 metres proud of the seabed.
Special Marker Buoy
Trinity House are due to deploy a fixed yellow special marker buoy and moorings at a location approximately 70m NE of the cable bight (note that Guard Vessels will be on station prior to the installation of this buoy and will leave after its installation .
The purpose of this buoy is to alert mariners to the location of the cable bight. The cable bight and the buoy mooring are both a potential danger to commercial fishing and angling vessels operating in the area.
Photographs of the type of buoy due to be installed, a map of its location, and the buoy specification are given in a notice here. The key details are summarised below:-
- Location: 53°23.052'N 003° 35.489'W (WGS 84).
- Specification: Yellow buoy, 4.1m diameter, 3.5m tall piller.
- Lantern: Flashing Yellow every 5 seconds (Fl Y 5s).
- Mooring: 5 tonne pancake sinker.
To ensure the safety of mariners, all vessels are kindly requested to observe a 500m safety exclusion zone around this buoy.
The buoy will stay in place for the foreseeable future until a permanent solution is put in place allowing for the cable to be re-terminated and buried as originally planned.
Type See detailed map on our bulletin website
Survey - Catcher Area (Ref: 1203)
A 42 Day Catcher Area Survey between the 17th April 2021 - 29th May 2021. Using the vessels PGS Ramform Hyperion call sign: C6DB4, Thor Omega call sign: OZ2065, Groen Miranda call sign: 6CR7
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Petroleum Geo-Services |
PGS Ramform Hyperion C6DB4 Thor Omega OZ2065 Groen Miranda 6CR7 |
6650m 5m |
17/04/2021 - 29/05/2021 For 42 Days |
28 |
Survey - East Orkney Site Survey (Ref: 1206)
A 6 Day East Orkney Site Survey between the 9th April 2021 - 30th September. Using the vessel Geo Ocean III Call sign: LXGP.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
GEOxyz UK |
Geo Ocean III LXGP |
150m 3m |
09/04/2021 - 30/09/2021 For 6 Days |
6,7,12,13,14 |
Export Cable Installation (Beach) - Hornsea Project Two
Ørsted are expected to commence export cable installation works in the intertidal area on or shortly after 1st April 2021 as part of the ongoing construction of the Hornsea Project Two Offshore Wind Farm.
Landfall Preparation and Cable Installation Please be advised that export cable installation activities in the intertidal area, including beach preparation, are due to re-commence at the landfall at Horseshoe Point, Lincolnshire on or shortly after 1st April 2021 until approximately 30th September 2021. Works will be continual and intermittent throughout these periods.
It should be noted that export cable seabed preparation and installation seaward of mean low water springs is ongoing until end of 2021
Vessels:
Vessel & Call Sign | Activity |
Ndurance 5BVH3 |
Cable Installation and burial |
Coastal Vanguard PCFH |
AHT |
Linestroom PICW |
AHT |
Maagd | Landfall tranporattion barge |
Titan Endeavour 2ELT9 |
Nearshore Survey |
Type See detailed map on our bulletin website
Survey - Leman Pipelines (Ref: 1208)
A 5 Day Leman Pipelines Survey between the 15th April 2021 - 31st May. Using the vessel MV Ocean Reliance Call sign: HP6391.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline Limited |
Ocean Reliance HP6391 |
N/A |
15/04/2021 - 31/05/2021 For 5 Days |
49 |
Dredging - Area 457
Dredging will commence on the 15/08/2021 for a period of 10 weeks in the call off zone within Marine Aggregate Licence Area 457 (MA234).
Dredging within Marine Aggregate Licence Area 457 is restricted to two active zones and a third call off zone. In order for dredging to occur within the third call off zone, at least 6 weeks notice is required prior to dredging can commence.
In order for effective implementation and notification, this notice provides sufficient time prior to dredging is scheduled to commence. Dredging is sheduled to commence on the 15/08/2021 for a period of 10 weeks.
Type See detailed map on our bulletin websiteSurvey - Hornsea Four Offshore Windfarm
Hornsea Four Offshore Windfarm will be carrying out offshore geophysical survey using the vessel Northern Storm call sign: MISA7 from 6th April until end of July 2021.
Survey completion is anticipated by the end of July 2021. The full scope of the works is anticipated to take 90 days to complete, with approximately 45 days duration surveying the proposed export cable corridor and 60 days duration surveying the proposed windfarm array areas.
The vessel Northern Storm call sign: MISA7 will be utilised for this survey. A local scout vessel is also contracted to reduce potential for static fishing gear interactions.
The survey area will be covered using a full geophysical survey spread including towed equipment. It is requested that all vessels operating within the area keep a safe distance (at least 500m) and pass at minimum speed/reduced wash.
Type See detailed map on our bulletin website
Remedial Works - Western Isles - North Uist-Benbecula & Eriskay
Briggs Marine Contractors (on behalf of SHEPD) will be undertaking remedial works to two subsea electricity cable shore end landfalls on North Uist-Benbecula and Eriskay.
Remedial works will be from MLWS towards the shore end landfalls and will utilise an excavator for shore work operations. No vessels will be used during these operations.
Remedial works on the North Uist-Benbecula shore end will commence Friday 26th March and are expected to take approx. 4 days to complete (weather permitting), with works on the Eriskay cable to commence Tuesday 30th March 2021 and are expected to last for 1-2 days, weather permitting.
Type See detailed map on our bulletin websiteSeabed Frame Deployment - Passage of Tiree
On 19th March 2021 Partrac Ltd. deployed one seabed mooring frame containing scientific equipment in the form of an acoustic doppler current profiling (ADCP) instrument device for a period of ~30 days to be recovered from 18th April 2021
This device is deployed to measure oceanographic parameters including the water column current profile, water level and surface wave conditions throughout this period.
The seabed frame is 1.5 x 1.5 m and stands 0.6 m proud of the seabed. The location is not marked by a surface mark. Consent for this deployment has been provided by Crown Estate Scotland, the Northern Lighthouse Board and Nature Scotland.
The measurement device was deployed on 19th March 2021 and it is expected to be recovered from 18th April 2021. The frame will have no surface marker and will have a +/-200m weighted ground line laid NNE-SSW from its position.
Type See detailed map on our bulletin websiteRig - West Hercules
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Haeva
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Safe Zephyrus
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreElgood to Blythe & Blythe to Thames, Pipeline and Umbilical Surveys
This NtM relates to surveys being performed over the existing pipelines between the Elgood and Blythe Fields and the connection with the Thames Pipeline, in the UK sector of the southern North Sea.
During March & April 2021 Titan Environmental, on behalf of IOG, will be performing surveys, primarily located within the +/-100 metre pipeline fishing exclusion/safety zones at the following locations:
- A pre-installation survey for an umbilical, which will be laid immediately adjacent to the 6-inch pipeline between Elgood and Blythe,
- A survey of the existing 6-inch pipeline between Elgood and Blythe,
- A survey at the Blythe platform site, partly covered by the pipeline exclusion/safety zones,
- A survey of a site connecting the 12-inch Blythe pipeline to the 24-inch Thames pipeline connection site.
The work will consist of using vessel mounted and towed sensors to scan the seabed, with no intrusive sensors.
Type See detailed map on our bulletin website
Export Cable Installation - Hornsea Project Two
Ørsted will be commencing export cable remedial works where the cable is currently being wet-stored, as part of the export cable installation scope for the Hornsea Project Two Offshore Wind Farm.
Mariners are advised that the Titan Endeavour is mobilising to site to carry out survey works that will continue intermittently through 2021.
Activities are being carried out on the Hornsea Project Two Offshore Wind Farm export cable route. Mariners are advised that MaxSea and Olex plotter files of the proposed works area can be provided by the Project’s Commercial Fisheries Advisors at Brown and May Marine Limited and the Project’s onshore fisheries liaison.
Export Cable Installation
Please be advised that Boskalis will be undertaking cable remedial works on or around 15th March 2021 with the BokaBarge 82, Voe Vanguard, Lingestroom and Barney at the location where the cable is currently being wet stored. In addition to this, the Titan Endeavour will be mobilising to site shortly to carry out survey works that will continue intermittently through 2021.
Boskalis are temporarily wet storing a cable at the RCS and the OSS. A guard vessel will be present, subject to safe weather conditions, whilst the cable is wet-stored but it is advised that mariners maintain a safe clearance.
Note that the vessels will have limited manoeuvrability, some vessels will be operating on anchors, and it is requested that all vessels operating near the vessels maintain a safe distance (at least 500m) and pass all vessels at minimum speed.
Export Cable Corridor Boulder Clearance
Please be advised that Hornsea Project Two will be continuing boulder clearance within the export cable corridor using the Atlantic Tonjer call sign: HOBO on or around 25th March 2021.
The works will continue intermittently through to Q2 2021. This Notice will be updated and re-issued when works are completed.
Note that the vessels will have limited manoeuvrability and it is requested that all vessels operating near the vessels maintain a safe distance (at least 500m) and pass all vessels at minimum speed.
Array Cable Seabed Preparation & Installation
Ørsted will be commencing pre-lay surveys and seabed preparation for array cable installation with the Simar Esperanca and rock deployment with the Flintstone on or around 21st March 2021, shortly followed by array cable installation itself on or around 15th April 2021. In addition to this, Seaway Offshore Cables (SOC) and Sulmara may be trialling an autonomous survey vessel within the Hornsea Project Two array area which will be supported by a dedicated support vessel, queries related to this scope should be directed to SOC / Sulmara.
Works will be continual and intermittent throughout this period. The works will be undertaken by a number of vessels at different times according to the Project schedule. This Notice will be updated and re-issued when works are complete.
Note that the vessels will have limited manoeuvrability and it is requested that all vessels operating near the vessels maintain a safe distance (at least 500m) and pass all vessels at minimum speed.
Type See detailed map on our bulletin website
Sofia OWF - ROV Investigation
All Mariners are advised that Sofia Offshore Wind Farm Limited (SOWFL) has contracted Ocean Ecology Limited (OEL) to carry out ROV investigation work within the proposed Sofia Offshore Wind Farm (SOWF) turbine array.
Please be advised that from the 1st April 2021, Ocean Ecology will be undertaking an ROV survey within the SOWF turbine array. The ROV survey will consist of a work-class ROV equipped with 3D reconstruction system, 2D multibeam imaging sonar, 4K camera and dredge skim to investigate a seabed feature.
Survey operations will be undertaken aboard the 65.9m vessel ‘Glomar Wave’ and are expected to last between 2-3 days, with the exact start and finish dates dependent on the prevailing weather conditions and work progress.
As the Glomar wave will be restricted in her ability to manoeuvre whilst equipment is deployed, mariners are requested to remain at a safe distance from the survey vessel, and of no less than 500m where possible.
Vessel Details - Glomar Wave
Length | 65.9m | Call sign | 3FXF4 |
Gross Tonnage | 2177 tons | IMO | 9682617 |
MMSI | 356301000 | Port of Registry | Panama |
Table of Coordinates for Activity
Point | Easting (UTM31) | Northing (UTM31) | DDM Longitude (WGS84) | DDM Longitude (WGS84) |
1 | 465989 | 6093527 | 54 61.7171N | 002 28.1088E |
Beach Survey - Hornsea Project Four
Orsted Hornsea Project Four Limited will commence beach based geotechnical surveys from early April 2021. This survey is being undertaken for the purposes of geological investigation of the cable landing of the proposed Hornsea Four Offshore Wind Farm.
Activities will take place in the Hornsea Four landfall area. The extent of the area in which the survey will be conducted is shown in the map overleaf. Survey personnel and equipment will arrive and undertake works from an all-terrain vehicle on the beach.
The operations will commence in early April 2021. Within the beach area up to a total of 8 samples to a maximum depth of 20m will be made.
The works are envisaged to take a maximum of 24 hours at each location (excluding any delays), with the survey team anticipated to be on site for approximately 3 weeks. The exact survey dates are dependent on weather and work progress.
Survey technicians will access the beach with an all-terrain vehicle(s) and the beach area will be surveyed by technicians on foot.
The beach will remain open to the public and every effort will be made to ensure that the survey does not inhibit existing beach use.
Type See detailed map on our bulletin website
Rig Move – Ensco 92 to Viking Field
Chrysaor plan to move the Ensco 92 Jack-up drilling rig from the Vulcan field location to the Viking field location to perform abandonment operations on the Alexandra exploration well 49/11a-6.
Destination:
Alexandra exploration well 49/11a-6.
53° 32' 23.30" N
2° 11' 46.04" E
Throughout well abandonment operations there will be a dedicated ERRV on location monitoring the surrounding sea area.
Type See detailed map on our bulletin websiteRosebank Field Metocean Monitoring Buoys
4 x metocean monitoring buoys in the Rosebank Field area 1 x surface wave buoy 3 x subsurface buoys at 40m, 160m, and 630m
4 x Metocean monitoring buoys will be in place at the Rosebank Field until approximately Q4 2021.
3 of these buoys are subsurface with only the wave monitoring buoy on the surface.
The wave buoy is painted yellow, equipped with solar panels, flashlight, active and passive radar reflectors. The active radar reflector responds to interrogating X-band radar (9.3-9.5 GHz)
Type See detailed map on our bulletin websiteSurvey - West of Gigha
The Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey in March, West of Gigha. The proposed works are planned to start on 17th March 2021 and will last approximately 110 days
Show MoreTolmount Development Area
Notice to alert sea users to the ongoing drilling activity of the Valaris 123 Jackup Drilling Rig at the Tolmount Platform in Block 42/28d .
The Tolmount minimum facilities platform has been installed on behalf of the Tolmount Development Project (comprising Premier Oil UK Limited, ODE Asset Management Limited and Humber Gathering System Limited (HGSL)) in UKCS Block 42/28d and an ERRV remains on location in field.
The Valaris123 Jackup Drilling Rig is in position over the Tolmount platform, with drilling operations underway. Drilling activity is planned for approximately 12 months (subject to further Kingfisher bulletins). NW well is now completed and the Valaris 123 has skidded to the SE well slot to recommence drilling operations.
Please note that an Offshore Development Area has also been requested for the Tolmount Development Project work.
The Boskalis BOKA Polaris Diving Support Vessel is scheduled to mobilise from Nigg, on the 22nd March 2021 for circa. 2 weeks diving operations at the Tolmount Platform.
Type See detailed map on our bulletin websiteBlyth Offshore Demonstrator - Post Construction Fish Trawl Surveys
Natural Power will be conducting otter trawl surveys at the Blyth Offshore Demonstrator wind farm. The surveys are proposed to commence from 17th March 2021 and will be completed 1 day after commencement (otter trawl survey duration 1 day).
The survey time may vary due to weather conditions as a calm sea state is required. The vessel undertaking these surveys will be the ‘Princess Royal’ call sign: 2EYM2.
The purpose of the survey is to assess the diversity and distribution of the fish population in and around the turbine array. Survey details:
Otter Trawl Survey
- Survey duration will be one day and consist of eight tows in total with duration of thirty minutes each at 3.5 knots. The trawl data will be collected across eight sampling stations.
West of Shetland – Power Reinstatement Project - Stage 1
The Far Superior (Call Sign: LATJ7) will be carrying out Rock Dump Removal / Dredging activities BETWEEN the various locations noted below :
The Far Superior (Call Sign: LATJ7) will be carrying out Rock Dump Removal / Dredging activities BETWEEN the various locations noted below :
Start date = 3rd April 2021
Duration expected to be approx. 14 Days
Type See detailed map on our bulletin websiteTriton Knoll Offshore Wind Farm - Confirmed UXO Targets
Mariners are advised that two UXO targets have been confirmed within the Triton Knoll Offshore Wind Farm Array.
Please be 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 |
Type See detailed map on our bulletin website
Survey - Viking & LOGGS (Ref: 1187)
A 18 Day Survey Viking & LOGGS Fields between the 3rd March 2021 - 30th April. Using the vessel Edda Sun Call sign: LARF7.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Edda Sun LARF7 |
N/A |
03/03/2021 - 30/04/2021 For 18 Days |
49 |
Planned Plug & Abandoned Operations - Alexandra 49/11A-6
The Valaris Rig 92 shall be utilised by Chrysaor Production (UK) Ltd to Plug and Abandon the Alexandra well, anticipated schedule is to position the rig at the location from ~16th March 2021 until the end of April 2021.
All vessels fishing within the area are requested to maintain a wide berth and acknowledge the 500m/z protocols following establishment of the rig at the location. Between the above dates it is requested that an area bounded by the below coordinates is avoided:
Type See detailed map on our bulletin websiteUnexplained Ordnance & Boulder clearance - Seagreen Offshore Windfarm
An unexploded ordnance and boulder clearance geophysical survey will take place within the Seagreen Offshore Windfarm site boundary.
The survey vessel, Geo Ranger will utilise towed array equipment with side scan sonar, sub bottom profiler and magnetometer to conduct the survey of all 114 Wind Turbine Generatorpositions and 1 Offshore Platform location within the Seagreen site boundary.The survey vessel is expected to arrive at site on or around Sunday the 21st of March and remain until August 21, weather dependant.
Type See detailed map on our bulletin websiteRig - Valaris 72
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreSurvey - Brodgar Infill 2021 (Ref: 1200)
A 3 Day Survey Brodgar Infill between the 15th April 2021 - 31st May. Using the vessels SW Amundsen Call sign: 5BXE2, MV Scorpio call Sign: ZDRF7 & Tess Call sign: YJUV8
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Shearwater GeoServices AS |
SW Amundsen 5BXE2 MV Scorpio ZDRF7 Tess YJUV8 |
8000m 15m |
15/04/2021 - 31/05/2021 For 3 Days |
21 |
Survey - Regional Survey (Ref: 1198)
A 81 Days Regional Survey between the 15th April 2021 - 30th September. Using the vessels SW Amundsen Call sign: 5BXE2, Support Vessel MV Scorpio call Sign: ZDRF7 & Astra-G sign: HP8120
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Shearwater GeoServices AS |
SW Amundsen 5BXE2 MV Scorpio ZDRF7 Astra-G HP8120 |
8100m 8m |
15/04/2021 - 30/09/2021 For 81 Days |
210, 211 |
Nearshore Pre-Cable Installation Works - Neart na Gaithe OWF
Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) are due to commence preparation works for the export cable installation, within the nearshore extent of the Export Cable Corridor. The works are due to commence on the 13th March 2021 at the earliest.
Two jack-up vessels, Capall Mara (MBSF3) and C57 Red Squirrel (J8B5722), will carry out a small amount of seabed preparation operations and undertake trenching works along a short section of the nearshore cable route.
The Capall Mara backhoe dredger will work along the two cables routes within the nearshore area, a first pass will be made where the vessel will reposition boulders between KP0.65 and KP1.4 followed by a second pass of each route where the vessel will excavate a trench within which the cable will be laid.
Excavated material will be temporarily repositioned to the side of the trench and will be backfilled by the Capall Mara once the nearshore cable installation is completed.
C57 Red Squirrel will work at KP0.65, to excavate two pits at the existing HDD exits and conduct minor construction works associated with the HDD exit point. The jack up vessel C57 Red Squirrel will arrive on site supported by two tugs, Forth Trojan (2FYM4) and The Battler (MGHD9).
A Crew Transfer Vessel, Celtic Guardian (21ZH5), will transfer personnel between the Capall Mara and C57 Red Squirrel and Eyemouth harbour each day. Celtic Guardian will also support with periodic minor surveys of the route. A dive vessel, CRC Tempest (MYUY7) will also work alongside the C57 Red Squirrel providing dive support associated with the minor HDD Construction works, as required.
Vessels are requested to remain at least 500 metres away from the Capall Mara and C57 Red Squirrel. Static fishing gear is requested to remain removed from the updated exclusion area
Area of Operations Mariners are advised that the Capall Mara and C57 Red Squirrel, alongside a number of supporting vessels, will be mobilised to work within the nearshore area of the NnG Export Cable Corridor' The nearshore exclusion zone will replace the existing exclusion area in place from the date of this notice.
Schedule The pre-enabling construction works are due to recommence on the 13th March 2021, at the earliest, and is expected to last approximately six weeks, until 30th April 2021, weather dependent. After this work, the preparation for cable installation will commence, in early May 2021, ahead of cable installation in June and July 2021. A further notice to mariners will be issued outlining the next phase in more detail.
Weather permitting, construction works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week) on the Capall Mara and on a daytime only basis (i.e. 12-hour working, seven days a week) on the C57 Red Squirrel.
Type See detailed map on our bulletin website
Survey - Amethyst C1D Noise Monitoring Survey
Perenco UK Limited plan to use explosive charges placed underground to perforate the well castings.
Subacoustech Environmental Ltd will monitor the underwater noise emissions resulting from these to generate a mathematic model of noise propagation (UKCS 47/14) utilising the Boston Putford Phoenix.
Type See detailed map on our bulletin websiteDecommissioning Activities – Hydrocarbon Free Activities on the Amethyst A1D Installation
Planned Hydrocarbon Free works are due to commence on the Amethyst A1D platform (UKCS 47/14).
The HAEVA Mobile Offshore Decommissioning Unit (Modu) will depart from Vlissingen in the Netherlands 3rd March 2021 (dependent on weather) and transit to the Amethyst field, where it will commence Hydrocarbon Free operations.
Type See detailed map on our bulletin websiteSurvey - Geological (Ref: 1201)
A 4 Day survey between the 29th March 2021 - 30th April.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline |
TBC |
3750m 4m |
29/03/2021 - 30/04/2021 For 4 Days |
8 |
Bathymetry Survey - HI1518 Mermaid Shoal
Please be advised that A-2-Sea Solutions will be carrying be carrying out a Civil Hydrography Programme nautical charting survey on behalf of the MCA.
A-2-Sea Solutions Ltd will be operating the vessel 'Cerys Line' on a 24-hr basis. The 'Cerys Line' (26.1m LOA) will be underway throughout operations, sailing survey lines at 5-12 knots. The 'Cerys Line' 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.
Please not that no towed equipment is to be deployed, this is an echosounder survey for nautical charting.
Type See detailed map on our bulletin websiteDeployment of Current Profiler - Mermaid Shoal
Mariners are to be advised that a seabed frame mounted Current Profiler, primarily measuring currents, will be deployed in one location in Mermaid Shoal.
The current profiler is scheduled to be deployed in early April 2021 by the vessel 'Cerys Line'. The current profiler will be isolated from the surface completely with no buoys or markers attached. The survey frame is approximately 1m high and will be attached to a clump weight by a weighted rope.
The current profiler will be in position on the seafloor for a minimum period of 30 days.
Type See detailed map on our bulletin websiteCable Fault - BritNed HVDC Cable
Following the repair of a recent fault, another fault has developed, believed to be further to the east, since the repair was completed. Consequently, the safety zone is being extended to include the area of the new fault.
Following a recent fault (caused by impact damage) and subsequent repair to the BritNed HVDC Interconnector, the repaired section although trenched, is still in the process of natural backfill and areas of exposure remain. A guard vessel (currently M/V FORTUNA) remains on site. Another fault, still under investigation, has developed, believed to be further to the east, since the repair was completed. Consequently, the safety zone is being extended to include the suspected area of the new fault.
We wish to remind ship’s captains of the presence of subsea cables and request that extra caution is exercised when operating near charted cables in order to avoid any incident. Due to changing seabed conditions it should not be assumed that all cables are buried.
Type See detailed map on our bulletin websiteIsabella Project - Site Survey
The Ocean Resolution (Call Sign: 3EIP9) will be carrying out a Site Survey within the area noted below:
Survey is expected to start on 16th March and take 2 to 3 weeks to complete.
Vessel will be towing 1.3km streamer.
Type See detailed map on our bulletin websiteSurvey - Alvhelm Prospect (Ref: 1193)
A 6 Day Site Survey at the Boyla Prospect between the 01st April 2021 - 31st August. Using the vessels Ramform Vanguard Call sign: C6TU8 & Sanco Chaser Call sign: ZDHH3.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
PGS Geophysical AS |
Ramform Vanguard C6TU8 Sanco Chaser ZDHH3 |
6500m 6m |
01/04/2021 - 31/08/2021 For 4 Days |
9 |
Survey - Boyla Prospect (Ref: 1192)
A 4 Day Site Survey at the Boyla Prospect between the 01st April 2021 - 31st August. Using the vessels Ramform Vanguard Call sign: C6TU8 & Sanco Chaser Call sign: ZDHH3.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
PGS Geophysical AS |
Ramform Vanguard C6TU8 Sanco Chaser ZDHH3 |
6500m 6m |
01/04/2021 - 31/08/2021 For 4 Days |
9 |
Survey - Ketch Platform 500m zone (Ref: 1195)
A 8 Day Ketch Platform 500m zone Survey between the 22nd March - 30th April 2021. Using the vessel Atlantis Dweller Call sign: 8PAB3.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Atlantis Dweller 8PAB3 |
N/A |
22/03/2021 - 30/04/2021 For 8 Days |
44 |
Survey - NW Schooner Platform 500m zone (Ref: 1197)
A 5 Day NW Schooner Platform 500m zone Survey between the 22nd March - 30th April 2021. Using the vessel Atlantis Dweller Call sign: 8PAB3.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Atlantis Dweller 8PAB3 |
N/A |
22/03/2021 - 30/04/2021 For 8 Days |
44 |
Survey - Schooner Platform 500m zone (Ref: 1196)
A 8 Day Schooner Platform 500m zone Survey between the 22nd March - 30th April 2021. Using the vessel Atlantis Dweller Call sign: 8PAB3.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Atlantis Dweller 8PAB3 |
N/A |
22/03/2021 - 30/04/2021 For 8 Days |
44 |
Scapa Field - Umbilical Installation & DSV Intervention
RSRUK give notice of DSV intervention in the Scapa Field, for the installation of a new control umbilical between the Claymore A Platform and the Scapa Template, including associated diving works.
The SCAPA production protection project will aim to safeguard production from the current 3 operating Subsea wells, and in addition will re-start production from E12.
Gas lift is required for production for each of the four Subsea Wells. Of the original 6 gas lift lines, 3 have been removed form service due to external corrosion and the others are to be retired during the project.
Gas life will be provided to the SCAPA template by re-purposing an existing 6" test line. Control of gas lift will be performed by the introduction of 4 new subsea gas lift chokes (one per well) and a dedicated control system to allow individual control feedback.
A new electro-hydraulic umbilical will also be installed to safeguard chemical injection routing from the Claymore platform to the field as part of the project. This will also provide the conduit for hydraulic and electrical control/feedback to the newly installed subsea chokes.
A water Injection Flowmeter and Pressure/Temperature Transducers shall also be installed to aid feedback from the Scapa Subsea system.
Type See detailed map on our bulletin websiteSeabed Frame Deployment - Kibrannan Sound
Partrac Ltd. have deployed one seabed mooring frame containing scientific equipment in the form of an acoustic doppler current profiling instrument (RDI 300kHz) device, for a period of ~30 days. Deployed on 5th March 2021 expected recovery 4th April 2021.
Partrac Ltd. have deployed one seabed mooring frame containing scientific equipment in the form of an acoustic doppler current profiling instrument (RDI 300kHz) device, for a period of ~30 days.
This device is deployed to measure oceanographic parameters including the water column current profile, water level and surface wave conditions throughout this period.
The seabed frame is 1.5 x 1.5 m and stands 0.6 m proud of the seabed. The location is not marked by a surface mark. Consent for this deployment has been provided by Crown Estate Scotland, the Northern Lighthouse Board and Nature Scotland.
The measurement device was deployed on 5th March 2021 and it is expected to be recovered from 4th April 2021.
Type See detailed map on our bulletin websiteRig - COSL Promoter
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig Move - Maersk Resilient
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreCatcher Field 3D / 4D Seismic Survey
Premier Oil UK have contracted PGS to conduct a Seismic survey over the Catcher Area assets located in block 28/9, the survey will also partly extend into blocks 28/3, 28/4 and 28/10. The survey is planned to commence 17th April 2021 and last 33 days.
The Seismic survey vessel to be used by PGS is the PGS Ramform Hyperion, call sign C6DB4, registered in the Bahamas. It is due to be mobilised from Flora in Norway on the 11th April and start shooting Seismic on 17th April 2021. The survey is due to last 33 days.
PGS Ramform Hyperion will be accompanied by two other vessels. The Thor Omega (support vessel) that will also mobilise from Flora and the Groen Miranda (escort vessel) , which will mobilise from Scheveningen, Netherlands.
Seismic survey operations will be by active surveying and the firing of airguns
Type See detailed map on our bulletin websitePipeline Activities - Arran Field
A Pipeline Initiation System (an arrangement of anchors, chains and wires) has been installed within the Arran South 500m safety zone (installed on 28/09/20). Further vessel activity will be taking place in the area as below.
CSV (Seven Arctic) – ASTIS Install (Subsea 7) Arran Field Development – Infield 15/03/21 – Depart Field 22/03/21
- Arran South Tie-in Structure installation
DSV (Seven Falcon) – Spool & Umbilical Installation (Subsea 7) Arran Field Development - Infield 18/04/21 – Depart Field 27/04/21
- 12” spool installation at Arran South
- Hook up umbilicals at Arran South
- Mattress protection at Arran South (12” spools and umbilicals)
DSV (Seven Falcon) – Pipeline Leak Test and Dewatering (Subsea 7) Arran Field Development - Infield 27/04/21 – Depart Field 18/05/21
- 12” spool installation at Shearwater
- Pipeline leak test at Columbus
- Mattress Reinstatement
- Dewater pipeline system at Arran North
- Umbilical tie-ins at Arran South
- 6” XT spools & TSCJ at Arran South
- Tree spool leak test
- OCH install at Arran South
Survey - Project Erebus Floating Offshore Wind Farm
A geophysical survey is due to be undertaken of the proposed Erebus and Valorous Floating Offshore Wind Farm (FLOW) projects. USing the vessel Geo Ocean IV call sign: LXHD from the 02 March 2021 until 30 April 2021.
The survey will involve the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub-Bottom profiler (SBP) and Magnetometer equipment, some of which will be towed sub-surface astern of the vessel.
The survey will cover the following:
- Erebus offshore array area, plus 1km buffer;
- Valorous offshore array area;
- Valorous offshore cable corridor; and
- Freshwater landfall options.
The extent of the planned survey is shown in the attached figure. Coordinates of the offshore array (and buffer) are also provided below. The work will be undertaken by one vessel, operated by the survey contractor, GEOxyz Vessel: Geo Ocean IV LXHD
Please note the Freshwater landfall area will be completed either on weekends during the estimated outline programme of works above or during the period from 29.03.21 to 10.04.21.
Type See detailed map on our bulletin websiteNeart na Gaoithe Offshore Wind Farm - HDD Marine Works
Mariners are advised that Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) have completed the HDD supporting works within the nearshore extent of the Export Cable Corridor.
As part of the completed works, the two separate HDD ducts have been cut back to a level just above the seabed and capped in preparation for upcoming export cable works. The height of the end of the ducting above the seabed (stick-up height). Each HDD exit location has been marked temporarily by a surface marker buoy. As-laid positions of the marker buoys are also provided.
The next scheduled works are due to begin the week commencing 15th March 2021, at the earliest. A notice to mariners will be issued in advance of these works, to notify of the start date.
Type See detailed map on our bulletin website
Cod Trawl Survey - Beatrice Offshore Wind Farm
Post-construction cod trawl surveys will take place at selected locations within the BOWL site, and adjacent areas, including within Moray East windfarm and the proposed site for Moray West windfarm.Trawls will take place in the 1st & 4th weeks March 2021
Post-construction cod trawl surveys will take place at selected locations within the BOWL site, and adjacent areas, including within Moray East windfarm and the proposed site for Moray West windfarm. Trawls will take place in the first and fourth weeks of March 2021 using the Fishing Vessel Reaper WK 83 call sign: MFIX5
The Beatrice windfarm is located approximately 11nm SE of wick.
Type See detailed map on our bulletin websiteDeployment of Buoys - West Gabbard
Recording oceanographic equipment has been moored at West Gabbard
There are a Smart Buoy and 2 yellow, Class 2 Guard Buoys carrying radar reflectors at the site.
All three buoys are fitted with a yellow light exhibiting the sequence FI Y (5) 20s.
Type See detailed map on our bulletin websiteDrilling - Grove Platform UKCS Block 49/10a
The Maersk Resolve drilling rig will be mobilising from the port of Esbjerg in Denmark on or around 10th March 2021. The rig will be undertaking drilling activities at the Grove platform in UKCS block 49/10a expected to arrive at Grove on 12th March 2021.
The rig is likely to be on location for a total period of 130 days.
Type See detailed map on our bulletin websiteSurvey - Drilling Hazard Site Survey (Ref: 1185)
A 10 Day Drilling Hazard Site Survey between the 15th March - 15th April 2021. Using the vessel Geo Resolution Call sign: 3EIP9.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline |
Ocean Resolution 3EIP9 |
N/A |
21503/2021 - 15/04/2021 For 10 Days |
30 |
Survey - Platform Surveys (Ref: 1184)
A 30 Day Platform Survey between the 12th March - 30th April 2021. Using the vessel Edda Sun call sign: 3EIP9
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Edda Sun LARF7 |
N/A |
12/03/2021 - 30/04/2021 For 30 Days |
44, 49 |
Survey - Caister CM 500m Survey (Ref: 1186)
A 2 Day Caister CM 500m Survey between the 03rd March - 30th April 2021. Using the vessel Edda Sun call sign: 3EIP9
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro |
Edda Sun LARF7 |
N/A |
03/03/2021 - 30/04/2021 For 2 Days |
44 |
Survey - Area Test Survey (Ref: 1190)
A 1 Day Area Test Survey between the 24th March - 15th April 2021. Using the vessel Geo Resolution Callsign: 3EIP9.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline |
Ocean Resolution 3EIP9 |
N/A |
24/03/2021 - 15/04/2021 For 1 Day |
30 |
Deployment of Buoy - Blyth Met Mast
Fugro have now completed planned SeaWatch LiDAR Buoy (SWLB) deployment and recovery operations in the vicinity of the Blyth Met Mast.
The SWLB referred to as WS180 has been recovered from the location south-east of the met mast and the SWLB referred to as WS155 has now been deployed on site to the north-west of the met mast. Exact locations are provided. The deployment location is within the UK Sector of the North Sea off the coast of Blyth, Northumberland.
The equipment will be deployed close to the Blyth Met Mast as part of a validation study within the existing met mast 250 m consent zone and will be deployed for a minimum period of 3 months.
Scheduled maintenance is not planned due to the short deployment duration, but unforeseen maintenance may be required.
The equipment will be moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.
Type See detailed map on our bulletin websiteSeabed Frame Deployment - Sound of Hoy
Partrac Ltd. have deployed one seabed mooring frame containing scientific equipment in the form of an acoustic doppler current profiling instrument (Nortek AWAC) device, for a period of ~30 days. The measurement device was deployed on 2nd March 2021.
This device is deployed to measure oceanographic parameters including the water column current profile, water level and surface wave conditions throughout this period.
The seabed frame is 1.5 x 1.5 m and stands 0.6 m proud of the seabed (Figure 1). The location is not marked by a surface mark. Consent for this deployment has been provided by Crown Estate Scotland, the Northern Lighthouse Board and Nature Scotland.
The measurement device was deployed on 2nd March 2021 and it is expected to be recovered from 1st April 2021
Type See detailed map on our bulletin websiteBuoy Deployment (Special Mark) - Moray East Windfarm
Intallation of a buoy (Special Mark) on the Moray East Windfarm. To be situated over the pre-existing Moray East Offshore Met Mast location
Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) have deployed an additional Buoy within the Bounds of moray East Offshore Windfarm. The Buoy (Special Mark) is situated over the pre-existing Moray East Offshore Met Mast location. The Buoy is attached to the debris cap covering the cut monopile and marks the site of obstruction which stands 21.7m in water depth above the seabed. The water depth at the location is 40.32m LAT. The obstruction consists of 1.7m gravel bed, 16m caisson height, 3m monopile stub and 1m debris cap.
The Buoy will remain in place until such a time when the remainder of the substructure will be decommissioned and removed.
Type See detailed map on our bulletin websiteSnagging hazard - Near Well 3/03-12
Unidentified snagging hazard at, or close to, the location of well 3/03-12.
Show MoreRoute Preparation Works UK - Viking Link Project
Mariners are advised about route preparation works planned for the Viking Link project which is a HVDC electricity transmission interconnector between Denmark and England, a joint venture between National Grid and Energinet.
The route preparation works covered by this notice include boulder relocation and debris removal in UK waters and they are planned to commence on the 24th February 2021 with expected completion by the end of March 2021.
In some locations of the cable route, previous survey results have indicated seabed obstructions and items that prevent the safe cable installation, in particular boulders, which cause problems when trying to lay the submarine cable and perform burial works that are planned later in 2021.
The route preparation works are being managed by Prysmian PowerLink carried out by ASSO Subsea and planned to be carried out by mobilizing Aethra call sign: 5BHH4. The Trenching support vessel is a multi-purpose vessel capable of performing preparation works and burial works.
In Figure 3, the expected vessel transit route (coming from Middlesbrough, UK) to the start and end of the route preparation scope of work is presented.
Vessels are requested to pass at a safe speed and distance and fishing vessels are advised to remain a safe distance, approximately 1000m (0.5 nautical miles) from the areas identified. During these works the vessel will have restricted maneuverability 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.
Type See detailed map on our bulletin websiteDecommissioning Activities – HCF / Topsides Dismantlement of the Amethyst C1D Installation
Planned Topside dismantlement works are due to commence on the Amethyst C1D Platform (UKCS 47/14).
The Jack up Barge, will depart from Leman 27BT (UKCS 49/27B) 25th February 2021 (dependent on weather) and transit to the Amethyst field, where it will commence HCF/Topsides dismantlement operations on Amethyst C1D Platform (UKCS 47/14).
Type See detailed map on our bulletin websiteInstallation of temporary marker buoy - as laid position
A Yellow Special Mark has been installed marking an exposed pipe
A temporary marker buoy has been positioned at the North of the end of the exposed duct shown in Fig 2 on the attached NtM (the highest point above sea level). The exposed duct protrudes approximately 20m from the seabed. The highest point is approximately 2.4m above seabed level or 6.5m below surface at LAT.
Type See detailed map on our bulletin websiteRig - Deepsea Yantai
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Transocean Endurance
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Prospector 1
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Erda - Amethyst 47/14-C1D
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreDiving and Decommissioning Works - Northern Producer FPF - Dons Fields
EnQuest Heather Ltd intends to undertake Pipeline flushing, Well isolation and disconnection works in relation to the Northern Producer FPF and Dons Field decommissioning commencing 01st April 2021
The workscope comprises of a Dive Support Vessel (DSV) performing the flushing and isolation of the Gas Export pipeline from the Thistle Alpha Platform to Northern Producer FPF, the isolation and disconnection of the Oil Export pipeline at the WYE structure, the isolation and disconnection of the subsea wells from the pipelines at the West Don Field and the isolation and disconnection of the subsea wells from the pipelines at the Don South West Field.
On completion of the flushing and diving activities, an ROV Construction Support Vessel (CSV) will perform the disconnection of the risers from the Northern Producer FPF in preparation for the Northern Producer FPF being taken off-station and towed to port.
The DSV will be positioned at the Thistle Alpha Platform 500m Zone, the WYE structure, West Don Field and the Don South West Field and the CSV will be positioned within the Northern Producer FPF 500m Zone only during these activities.
The earliest start date for operations to commence is 01st April with the operations expected to last until the end of April. The operations will be undertaken from the following vessels:
Operation | Vessel | Dates In Field |
Dive Support Vessel (DSV) | Deep Discoverer | 01/04/21 - 14/04/21 |
ROV Support Vessel (CSV) | TBA | 17/04/21 - 20/04/21 |
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.
The subsea safety 500m zones around the WYE structure, West Don & Don South West fields will remain in place for the foreseeable future.
Type See detailed map on our bulletin websiteBoulders Deposited within the Brighton MCZ (UPDATE)
It has been reported that on the 23 and 25 February 2021, the Greenpeace vessel 'Esperanza' has deposited a number of boulders within the Brighton Offshore Marine Conservation Zone (MCZ). Estimated weigh ~3 tonnes each.
Show MoreDogger Bank A landfall HDD pilot drilling First punchout and exposed pipe
This notice to mariners (NtM) relates to the landfall HDD pilot drilling at DBA. Specifically, it gives details of the first pipe punchout and shows the extent of the exposed pipe above the seabed.
The main DBA and DBB landfall HDD pilot drilling commenced beyond the MHWS location from the 4th January 2021.
The first of the pilot drills has punched out onto sea bed in the location shown in fig 1 and 2
A survey carried out to confirm accurate drill positions has shown that there is approx. 20m of exposed pipe protruding from the seabed.
At its highest point (Point A) the pipe end is approximately 6.5m below the surface at LAT
Type See detailed map on our bulletin websitePipeline Flushing and Riser Decommissioning - Balmoral Area
Premier Oil’s project to flush & disconnect the Greater Balmoral Area subsea infrastructure and removal of associated risers in relation to the float-off of the Balmoral FPV will be undertaken between 28th February and 31st December 2021.
Locations | Coordinates |
Balmoral FPV & Template |
58°13.727'N 001°06.427'E |
Tap Valve No.3 (Forties Pipeline System) | 58°06.622'N 001°09.449'E |
Balmoral Satellite Well B29 | 58°15.127'N 001°03.323'E |
Balmoral Satellite Well A2 | 58°13.970'N 001°07.953'E |
Brenda Drill Centre | 58°11.763'N 000°58.407'E |
Brenda Umbilical cut point | 58°13.810'N 001°06.318'E |
Nicol Drill Centre | 58°14.908'N 000°50.812'E |
Stirling 20z Well | 58°14.010'N 001°08.063'E |
Glamis A26 Well | 58°10.695'N 001°01.045'E |
Glamis A27 Well |
58°10.308'N 001°04.168'E |
Burghley WH1 Well | 58°16.052'N 001°14.148'E |
Beauly Well | 58°11.028'N 001°07.632'E |
Type See detailed map on our bulletin website
Exposed Cables - Galloper Offshore Wind Farm
Update from most recent subsea survey. There is evidence of sections of cable exposure in ten areas over seven cable routes of the Galloper windfarm. Locations noted below
Area | Start | Stop |
D1J - E2J | 51°48.489'N 002°02.339'E | 51°48.489'N 002°02.341'E |
E3H - E4H | 51°55.322'N 002°01.231'E | 51°55.322'N 002°01.224'E |
E4H - E5H | 51°54.568'N 002°01.180'E | 51°54.565'N 002°01.176'E |
OSP - D3A | 51°57.151'N 002°01.879'E | 51°57.127'N 002°01.876'E |
OSP - F3C | 51°57.455'N 002°02.816'E | 51°57.472'N 002°02.141'E |
OSP - F3C | 51°57.508'N 002°02.564'E | 51°57.513'N 002°02.587'E |
OSP - F4E | 51°57.100'N 002°02.148'E | 51°57.100'N 002°02.150'E |
OSP - F4E | 51°57.101'N 002°02.462'E | 51°57.101'N 002°02.462'E |
OSP - F6G | 51°56.400'N 002°01.586'E | 51°56.399'N 002°01.587'E |
OSP - F6G | 51°56.369'N 002°02.200'E | 51°56.369'N 002°02.200'E |
There is no cable exposure evident in the South Field of the windfarm.
Type See detailed map on our bulletin websiteRig - Maersk Integrator
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreCone Penetration Testing and Vibrocore Sampling at Dogger Bank A, B, C Windfarm
This notice to mariners (NtM) relates to cone penetration testing and vibrocore sampling on DBA, DBB, DBC wind farm array areas and Export Cable Corridors.
The Wilson Adriatic will be performing cone penetration testing and vibrocore sampling and will be stationary on locations for up to approximately 4 hrs.
The cone penetration testing and vibrocore sampling is expected to commence at midnight on 5th March, 2021 and conclude at midnight on 31th June, 2021 using the vessel Wilson Adriatic. Works are planned to commence in the DBC wind farm array area.
Type See detailed map on our bulletin websiteDamaged pipeline
Physical damage to pipeline
Physical damage to pipeline, current cause unknown. Vessel on scene assessing.
Type See detailed map on our bulletin websiteInter Array Cable Burial works - Moray East Wind Farm
Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are carrying out Inter Array Cable (IAC) burial works within the bounds of site
The cable trenching (post lay burial) will be completed by tracked- on bottom trenching tools. WROV surveys will be conducted once the cable is buried.
Two trenching support vessels ,Grand Canyon 3 and the Boskalis Ndeavor, will be completing operations on the cable routes identified in Figure 2.
Both vessels will complete launch and recovery operations of the trenching tools, and will be restricted in their ability to manoeuvre during trenching and WROV operations.
The overall work scope will be carried out in 2 campaigns – Campaign 1, commencing 07/11/20 to 03/01/20 and Campaign 2, commencing 20/03/21 to 12/05/21.
Type See detailed map on our bulletin websiteRig - West Bollsta
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreDrilling - Elgood Well 48/22c-H1
Petrofac Facilities Management Ltd (PFML) propose to drill and complete a production well at the Elgood Subsea location, from the 9th March 2021 for, the duration of, 89 days. The drilling operation will be carried out by Noble Hans Deul drilling rig.
Show MoreSurvey - Interim Pipeline Survey (Ref: 1177)
A 10 Day Interim Pipeline Survey PL22, PL23 & PL24. From the 16th February - 31st March 2021. Using Vessel Geo Focus callsign: PCOS
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
N Sea |
Geo Focus PCOS |
N/A |
16/02/2021 - 31/03/2021 For 10 Days |
48, 49, 52, 53 |
Survey - Leman 27B Debris Survey (Ref: 1162)
A 2 Day Debris Survey Leman 27B. From the 16th February - 31st March 2021. Using the vessel Geo Ranger Callsign: PHHV.
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
N Sea |
Geo Ranger PHHV |
N/A |
16/02/2021 - 31/03/2021 For 2 Days |
49 |
Drilling Operation - Columbus
Serica Energy is to perform a drilling operation and sub-sea installation at the Columbus location, located in the Central North Sea.
- Location Name: Columbus
- Well Co-ordinates: 57° 20.968′ N 002° 05.237′ E
- Tie-In Structure Co-ordinates: 57° 20.979′ N 002° 05.198′ E
- Start Date: 01 March 2021
- Duration: Approx. 70 Days
- Rig Name: Maersk Resilient
- ERRV: Esvagt Sigma
- Safety Zone: 500 metre radius
Galloper Windfarm - Defect of the Cable Protection System (CPS) inter-array cable GS-A1L
A recent ROV inspection at Galloper to assess the subsea structure of inter-array cable A1L identified a defect of the Cable Protection System (CPS) on top of the existing scour protection around the wind turbine foundation, at the point of burial.
A recent ROV inspection at Galloper to assess the subsea structure of inter-array cable A1L identified a defect of the Cable Protection System (CPS) on top of the existing scour protection around the wind turbine foundation, at the point of burial.
Asset Location GS-A1L 51° 43,972' N 1° 58,174' E
As cable exposure is a known risk at Galloper and across the offshore wind industry, we would remind Mariners of the safety information found on the KIS-ORCA website ‘The risks of fishing near cables and renewable energy structures.’ https://kis-orca.org/safety/the-risks-of-fishing-near-cables-renewable-energy-structures/
To avoid crossing cables when towing equipment follow the cable corridors- locations of the cables can be found on the Galloper awareness charts via KIS-ORCA.
An updated NtM will be issued once the remedial works is confirmed and scheduled
Mariners are requested to remain a distance of 50m2 away from GS-A1L, 51° 43,972' N 1° 58,174' E, until remedial works have been carried out.
Temporary exclusion area as per the below drawing.
Type See detailed map on our bulletin website
Sound measurement study - Hywind Scotland Pilot Park
Hywind Scotland Pilot Park is performing a sound measurement study where the purpose is to document the operational noise. Successful retrieval of control sound recorder performed January 24. Failed retrieval of the sound recorder in wind park.
Update February 5:
Successful retrieval of control sound recorder performed January 24. Failed retrieval of the sound recorder in wind park. A second attempt for retrieval of the sound equipment in the Hywind Scotland Pilot Park is being planned. The notice is prolonged and the location of the retrieved control equipment is removed from the notice.
-----
As part of the Hywind Scotland Wind Park, Equinor has subcontracted Jasco Applied Sciences to perform sound recordings in the park area and in a control location in Buchan Deep (near cross over point between the FORTIES to CRUDEN Bay oil line and the GAS line).
The purpose of the sound measurement study is to document the operational noise from floating offshore wind turbines and their substructures, mooring lines and cables. It is part of an internal Equinor Research &Technology project that aims to increase knowledge on possible environmental implications of floating offshore wind, i.e. in this particular study, the possible impact ranges of sound from the wind park on marine mammals and fish. The results from the sound measurement study is important also for further technology development.
The Equinor contracted “MCS Swath1” (crew vessel) will be used for the deployment and retrieval of the sound recorder equipment (hydrophones). The field activity in connection with both deployment and retrieval will take one day, however, the recording period will be approximately 3 months from ultimo October 2020 to ultimo January 2021.
The recorders were deployed October 21. Yet, no exact date is set for the retrieval of the equipment (ultimo January 2021).Activity prolonged.
All Equinor installed equipment shall remain in position for the duration of the survey, but all equipment will be removed from seabed when the recording period is over. Also, there will be no bouys on sea surface or lines in the water column. All equipment will be placed on sea floor at approximately 100 meters depth by the help of an anchoring plate, which fastens the equipment and eliminates drifting of equipment. The equipment will have a height of maximum 1 meter above seabed, and the plate mooring system has the dimension 914 x 527 x 864 mm.
This equipment collects data and information of environmental importance and could get damaged or lost if trawled over.
When the equipment is retrieved, the acoustic release will be activated and the equipment will be lifted by crane.
Positions for recorders in wind park (The Control was retrieved January 24 2021 and location is removed from the map in the active notice.)
Location |
Latitude |
Longitude |
Easting (m)† |
Northing (m)† |
Hywind Scotland |
57° 29' 04.2741" N |
1° 20' 33.8512" W |
599357.410 |
6372534.418 |
Control |
57° 31' 48.0000" N |
1° 07' 33.6000" W |
612209.809 |
6377933.954 |
Vessel Specification
Details of the vessel MCS Swath1 can be seen via the following document.
https://www.maritimecraft.co.uk/files/MCS-SWATH-1.pdf
According to information in the specification, a deck crane of load 500 kgs is installed. The crane and a mobile winch will be used to deploy and retrieve sound recording equipment.
Type See detailed map on our bulletin website
Surface laid cable - Havhingsten, Eastern Irish Sea
It is advised that extra care is taken when operating near these areas and that no vessel should trawl within 250m from the Western HVDC crossing, and within 450m from the Hibernia crossing. Burial & rock placement works are planned for early Q2 2021.
Please be advised that, installation of the Havhingsten fibre optic telecommunication cable system is almost complete in the Eastern Irish Sea.
The supplier of the Havhingsten cable is Alcatel Submarine Networks (ASN). Intertek are the environmental and permitting consultants.
The entire cable system will comprise marine elements that pass from Denmark to the UK (NE region); from the UK (NW) to the Republic of Ireland; with two segments being installed into landfalls on the Isle of Man.
Installation was via industry standard burial tools including water jetting and ploughing. Cable burial has been performed to a target of 1.5m.
The Havhingsten cable crosses 2 existing assets within the Eastern Irish Sea, 1 of which is a power cable which will require external rock protection (Western HVDC link). Post-rock installation is now expected in Q2 2021. The power cable crossing is located approximately 50km offshore, see Figure below.
Prior to rock placement there is a maximum of 25m of cable surface laid with Uraduct protection either side of the Western HVDC crossing. Coordinates of the crossing are provided in the table below. It is advised that extra care is taken when vessels are operating near the area and that no vessel should trawl within 250m from the listed coordinates.
Crossing |
Approximate distance offshore (km) |
Latitude |
Longitude |
Western HVDC Link |
50 |
53°45.9867’ N |
003°48.9137’ W |
Prior to Post-Lay Inspection and Burial (PLIB) works, there is a maximum of 255m of cable surface laid either side of the Hibernia/GTT fibre optic cable crossing. PLIB works at the crossing are planned in early Q2 2021. Coordinates of the crossing are provided in the table below. It is advised that extra care is taken when vessels are operating near the area and that no vessel should trawl within 450m from the listed coordinates.
Crossing |
Approximate distance offshore (km) |
Latitude |
Longitude |
Hibernia/GTT |
23 |
53°45.0048’ N |
003°24.2761’ W |
A guard vessel (the Silver Harvester) will be on location at both crossings once a week to notify vessels in the vicinity of the areas of surface laid cable.
Type See detailed map on our bulletin websiteMaersk Highlander at Elgin WHP B
The jack-up rig Maersk Highlander is alongside Elgin WHP B – within 500m zone for the next 6 months (approximately)
The jack-up rig Maersk Highlander is alongside Elgin WHP B – within 500m zone for the next 6 moths (approximately)
Type See detailed map on our bulletin websiteSuspended Wellhead - Tolmount Main NE 42/28d-16
There is a new suspended wellhead on the seabed. These can be up to 4 metres high, they are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - Tolmount Main SW 42/28d-17
There is a new suspended wellhead on the seabed. These can be up to 4 metres high, they are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - Tolmount Main SE 42/28d-18
There is a new suspended wellhead on the seabed. These can be up to 4 metres high, they are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSurvey - East Anglia HUB Offshore Wind Farm
Scottish Power Renewables (SPR) has contracted Fugro GM Marine Limited (Fugro) to carry out a geophysical and geotechnical site investigation located east of Lowestoft, in the southern North for the proposed East Anglia HUB offshore windfarm site.
The East Anglia HUB offshore windfarm site is split onto three zones: East Anglia ONE North (EA1N); East Anglia TWO (EA2); and East Anglia THREE (EA3). In 2021, Fugro will be initially operating in EA1N only with operations commencing on 5th February 2021, with operations in EA2 and EA3 commencing subsequently.
This Notice to Mariners will be updated and reissued periodically as additional vessels are planned to come on site. For operations in 2021, current planning indicates a total of 8 vessels being on site between the period 5th February and 18th August 2021. It should be noted these dates are subject to change and the total number of vessels could increase.
Vessel | Call Sign | Area | Dates | Duration |
Fugro Venturer | C6CG3 | EA1N - OWF & ECC | 05/02/21 | 8 Weeks |
Fugro Frontier | C6BH4 | EA1N - OWF & ECC | 12/04/21 | 3 Weeks |
Fugro Frontier | C6BH4 | EA2 - OWF & ECC | 01/04/21 | 9 Weeks |
Fugro Frontier | C6BH4 | EA3 - OWF & ECC | 11/03/21 | 3 Weeks |
Type See detailed map on our bulletin website
Installation of Special Mark Buoys - Scarborough
Please be advised that we have installed 4 x Special Mark buoys at the boundaries of our aquaculture site. Each buoy is a yellow can shaped Special Mark fitted with a topmark, radar reflector and light (Fl.Y.5s).
Whilst the boundaries of the aquaculture site are lit, marked and charted, equipment deployed within these boundaries may be unlit and lying close to the surface. Mariners are advised to exercise caution in the vicinity and to remain a safe distance outside the site boundaries.
Type See detailed map on our bulletin websiteNorth Hoyle Offshore Wind Farm - Exclusion Zone
Please be advised that RWE Renewables UK request that all vessels keep a minimum distance of 150m away from NH30 of North Hoyle Windfarm due to blade damage. Exclusion zone effective from 26/01/2021 and will remain in force until further notice
Show MoreSurvey - Pipeline Survey TGT to LOGGS PP (Ref: 1170)
A 27 Day Pipeline Survey TGT to LOGGS PP. Using unmanned vessel X09 Call Sign: MHIJ8 from the 25th January - 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
16/02/2021 - 31/03/2021 For 5 Days |
47, 48, 49 |
Survey - Pipeline Survey TGT to Viking AR (Ref: 1172)
A 5 Day Pipeline Survey TGT to Viking AR. Using unmanned vessel X09 Call Sign: MHIJ8 from the 16th February - 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
16/02/2021 - 31/03/2021 For 5 Days |
47, 48, 49 |
Survey - Pipeline Survey LOGGS to Viking Bravo (Ref: 1174)
A 5 Day Pipeline Survey LOGGS to Viking Bravo. Using unmanned vessel X09 Call Sign: MHIJ8 from the 16th February - 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
16/02/2021 - 31/03/2021 For 5 Days |
49 |
Survey - Pipeline Survey TGT to LOGGS PP (Ref: 1173)
A 5 Day Pipeline Survey TGT to LOGGS PP. Using unmanned vessel X09 Call Sign: MHIJ8 from the 16th February - 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
16/02/2021 - 31/03/2021 For 5 Days |
47, 48, 49 |
Survey - Sub-bottom Profiling Vulcan UR & Vampire OD (Ref: 1175)
A 5 Day unmanned Sub-bottom profiling (SBP) will be used at the Vulcan UR and Vampire OD platform footprints to ascertain depth of burial of pile stubs & conductor stubs. Using unmanned vessel X09 Call Sign: MHIJ8 from the 16th February - 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
16/02/2021 - 31/03/2021 For 5 Days |
49 |
Rig - Valaris 122
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreScientific mooring deployments - West of Orkney and Thurso Bay
Partrac Ltd. Installed marine sensors at 3 sites over the period 15th to 17th October 2020. Following the marker coming adrift from Thurso Bay, the Instruments and moorings from Thurso, have been relocated to north of Dounreay
Sub-surface moorings will be deployed at three survey locations, each marked with a simple surface buoy positioned ~200m from the instrument location. A surface moored wave buoy will also be deployed at Survey point 5. The wave buoy is fitted with a 2m whip antenna, with a light sequence of Y.Fl.5(20s)
Having come adrfit, the instrument and mooring that had been deployed at East Thurso Bay, was relocated to the north of Dounreay
Type See detailed map on our bulletin websiteRig - Maersk Invincible
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Maersk Intrepid
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Rowan Stavanger
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Ensco 120
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - 590021
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Transocean Spitsbergen
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Valaris Gorilla VI
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreSurvey - Debris Clearance LOGGS,Vampire OD, Vulcan UR (Ref: 1169)
A 27 Day unmanned debris clearance survey of LOGGS,Vampire OD, Vulcan UR. Using unmanned vessel X09 Call Sign: MHIJ8 from the 19th January until 31st March 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
XOCEAN |
X09 MHIJ8 |
N/A |
19/01/2021 - 31/03/2021 For 27 Days |
47, 48, 49 |
There will be a debris clearance and bathymetry survey at the sites of two LOGGS satellite installations that were removed in 2019 and 2020, Vampire OD and Vulcan UR. In addition, there will be two pipeline length surveys (PL0027/PL0161 & PL2643/PL2644) and pipeline span surveys conducted at eight points along five pipeline / umbilical’s, within the LOGGS and Viking fields. An unmanned survey vessel will undertake these activities.
Type See detailed map on our bulletin websiteDrilling Anchor Points - Jerv Prospect
Chrysaor Norge As are planning to drill the Jerv prospect on the Norwegian continental shelf, with the semi submerged drilling rig, COSL Innovator. Three (3) of the anchors and the belonging mooring lines will be placed on UK soil.
The Works shall comprise the installation of: three anchors and moorings of the COSL Innovator which cross the median line with Norway and extend into the UKCS.
Type See detailed map on our bulletin websiteLost CPT rod - Eastern Link 1
During CPT operations a CPT rod broke and was lost to the seabed. The rod is made of steel and is 3.6cm in diameter. It is estimated that 0.75m of rod is protruding above the seabed.
The cone and friction rod were also missing at recovery and are most likely curried under the seabed. These are also made of steel with the same diameter. The cone is 35cm long and the friction rod is 30cm long.
There may be a minor risk to trawler’s fishing gear if they trawl over this location, however, it is more likely that any trawling gear would break the rod below the seabed.
Type See detailed map on our bulletin websiteSurvey - Proposed Drilling Survey Diadem Well (Ref: 1166)
A 6 Day proposed drilling survey of the Diadem Well. Using Vessels Fugro Galaxy Call Sign: C6YY4 & Fugro Synergy Call Sign: C6XR3 from the 18th January until 01th June 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Fugro GB North Marine Ltd |
Fugro Galaxy C6YY4 Fugro Synergy C6XR3 |
700m 3m |
18/01/2021 - 30/06/2021 For 6 Days |
22 |
Rig - Rowan Viking
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Ocean Endeavor
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreTriton Knoll Offshore Wind Farm - Navigation Warning
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.
Mariners are advised that the remnants of a Wave Rider Buoy sinker weight and partial rigging remain in position at:
Latitude | Longitude | Water Depth (LAT) |
53° 30.442N | 000° 50.564E | 19.7m |
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.
***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.
Pile Installation - Penguins Field
A number of items will be left installed/wet stored on the seabed around the Penguins Field. Pile Fast Frame (together with pile stick-up) 8 x piles (completed with multiple clay protrusions/blocks) 9 x chains (210m long, 177mm diameter).
Details of Seabed - West Cluster
Pile No | Location | Clay plugs at pile location |
1 | 61°35.020'N 01°31.070'E | 1.30m height x 2.5 dia. |
2 | 61°34.990'N 01°31.070'E | 2.00m height x 2.5 dia. |
3 | 61°35.020'N 01°31.060'E | 1.50m height x 2.5 dia. |
4 | 61°35.050'N 01°31.070'E | 1.50m height x 2.5 dia. |
Note: 210m of 177mm dia. chain has been laid on seabed at each location towards the FPSO centre.
Details of Seabed - North East Cluster
Pile No | Location | Clay plugs at pile location |
5 | 61°35.550'N 01°33.430'E | 1.30m height x 2.5 dia. |
6 | 61°35.540'N 01°33.470'E | 2.00m height x 2.5 dia. |
7 | 61°35.520'N 01°33.510'E | 1.50m height x 2.5 dia. |
8 | 61°35.510'N 01°33.550'E | 1.50m height x 2.5 dia. |
Note: 210m of 177mm dia. chain has been laid on seabed at each location towards the FPSO centre.
Details of Seabed - Southern Cluster
Pile No | Location | Comments |
9 | 61°34.450'N 01°33.500'E |
Fast frame is currently located at pile location 9 (11.85m x 11.70m x 30m |
Note: 30m pile is installed in this fast frame
Type See detailed map on our bulletin websiteLeadon Area – Possible Trawl Hazards
Six small structures (approx. 0.5m high x 1.5m long and 0.6m across) were located on the top of the disused Leadon Bundles in UKCS Block 9/14. These small structures are located at the points listed.
Show MoreTopsides and Jacket Removal - Brent Alpha Platform
Brent Alpha Platform (topsides and jacket) have been removed. The Jacket footings protrude 55.24m metres above the seabed. There is no longer a Safety Zone around the Brent Alpha remaining structure.
Show MoreDecommissioning - Ninian Platform
Two cardinal buoys in proximity to Ninian North Platform, after removal of platform topsides (and associated navaids) in 2020.
West cardinal buoy (Fl. Q. (9). 15s), including ground tackle, with 400m excursion radius. Buoy fitted with AIS.
East cardinal buoy (Fl. Q. (3). 10s), including ground tackle, with 400m excursion radius. Buoy fitted with AIS.
Type See detailed map on our bulletin websiteCompletion of Explosive Ordnance - Hornsea Project Two
Mariners are advised that the Explosive Ordnance Detonation (EOD) phase for the pre-construction stage of Hornsea Project Two is now completed.
Hornsea Project Two confirms the presence of 7 Unexploded Ordnance (cUXO) and 2 suspected UXO (sUXO) which remain undetonated within the Hornsea Project Two Wind Farm area. There are no plans to clear these remaining UXO.
All vessels are requested to maintain the required safe distances as defined from the coordinates
It should be noted that ongoing seabed preparation for construction, as well as construction activities themselves, may identify further UXO which may need to be cleared from the site. Separate notices will be issued in this case.
Type See detailed map on our bulletin websiteUnexploded Ordnance
Two items of debris identified as WW2 unexploded ordnance
The as-built survey of the Mariner 6" Gas Import pipeline showed two items of debris that were later identified as WW2 unexploded ordnance.
The UXOs posses no immediate threat to the burried pipeline.
Plans are being reviewed to arrange for safe removal and destruction/disposal.
Type See detailed map on our bulletin websiteDropped drill pipe and collars (2,300kg / 33 metres)
Fugro has reported the loss of 33 metres of drill pipe, weighing a total of 2300kg from the MV Normand Flower whilst working on East Anglia 1 North wind farm. It is not known whether the item is sticking up above the seabed at this stage.
Dimensions of object: ~33 m of steel drill string consisting of: 4 X Drill Collars (each ~4.5 m long, ~8 inch diameter and ~500 kg in weight) 1 X API Drill String ~9 m long, 4.5 inch diameter and ~300kg weight
Type See detailed map on our bulletin websiteNinian North jacket
Top of Ninian North jacket 6m above sea level - no navaids or lights
The topsides has been removed from the Ninian North installation, leaving the jacket structure still in place. The top of the structure is approximately 6 metres above sea level. With the removal of the topsides, the remaining jacket structure is unlit and is not fitted with any navaids; cardinal buoys are located to the East & West.
Type See detailed map on our bulletin websiteBuzzard Field - unconnected subsea infrastructure
Drilling activity in the Buzzard Field will cease for 2020 in September leaving 4 x Xmas Trees and 2 x wellhead conductors unconnected in the field until the subsequent subsea campaign in 2021. The locations are in the table below.
|
Type See detailed map on our bulletin website
Dropped Anchor - Gwynt y Mor Offshore Wind Farm
The original anchor consisting of approximately 350kg of scrap chain at the previously as laid position:53°28.615 N 003°30.192 W could not be recovered and remains on the sea bed.
Show MoreExposed Cable - Tampnet Fibre Optic Cable - Penguins (UK) - Snorre A (NOR)
Please be advised that the installation of the Tampnet fibre optic cable is still ongoing and that there is currently approximately 4.5km of EXPOSED CABLE on the seabed. We advise all seafarers and fishermen to keep clear of using any bottom equipment.
Please be advised that the installation of the Tampnet fibre optic cable is still ongoing and that there is currently approximately 4.5km of EXPOSED CABLE on the seabed as per attached drawing. We advise all seafarers and fishermen to keep clear of using any bottom equipment that might interact and damage the cable in vincinity of the route. We are also broadcasting and raising awareness from land and nearby guard vessels to all fishermen approaching the cable route. The installation is expected to be ongoing until mid September.
Type See detailed map on our bulletin websiteExposed Cable - Beatrice Offshore Windfarm
Rock Replacement Operations on a short area (4m) of partial exposure of Export Cable EC2 is in the vicinity of the mid cable joint at the location where the cable changes direction. Vessel MV Olympic Artemis Call sign: LAFV8. Work Commencement date TBC.
ROn behalf of Beatrice Offshore Windfarm Ltd, MV Olympic Artemis Call sign: LAFV8 will deploy rock bags over a four-metre section of exposed export cable.
Work Commencement date TBC.
During this operation the MV Olympic Artemis will be restricted in its ability to manoeuvre and will be displaying the appropriate lights and day signals. All vessels are there for requested to give a wide berth when passing.
At present the MFV Reaper is acting as a guard vessel at this location, further information is available in previously issued Beatrice notice to mariners NTM-BE-00005 - Export Cable Guard Vessel. MFV Reaper will remain on location throughout operations until the partial exposure has been proven to be satisfactorily covered.
Type See detailed map on our bulletin websiteRelocated Unexploded Ordnance - Neart na Gaoithe Offshore Wind Farm
Following unsuccessful clearance activities at some of the confirmed Unexploded Ordnance (UXO) items, six UXOs have been relocated to date within the Neart na Gaoithe (NnG) Offshore Wind Farm and Export Cable Corridor.
These UXO items either do not contain a fuse or are confirmed as solid shots and clearance by detonation is not likely to be possible. As such, relocation of the item is necessary. The item will be relocated to a position outwith the construction areas, but within the boundaries of the NnG licensed area, as permitted by the Marine Licence.
Latitude | Longitude | Target |
56°14.752’N | 02°18.472’W | G_MAG_0029 |
56°14.760’N | 02°18.474’W | G_MAG_0010 |
56°14.154’N | 02°14.886’W | E_MAG_0683 |
56°13.677’N | 02°18.681’W | ERC_O_MAG_0332_A |
56°14.955’N | 02°17.445’W | E_MAG_0068 |
56°14.953’N | 02°17.437’W | E_MAG_0070 |
56°14.607’N | 02°17.618’W | E_MAG_0036 |
56°15.399’N | 02°19.521’W | G_MAG_0109 |
56°14.766'N | 02°17.025’W | E_MAG_0227 |
56°14.131’N | 02°18.011’W | E_MAG_0008 |
56°14.568’N | 02°18.617’W | E_MAG_0018 |
56°15.875’N | 02°14.986’W | C_MAG_0070 |
56°13.739’N | 02°18.685’W | ECR_O_MAG_0362_A |
56°13.784’N | 02°18.671’W | ECR_O_MAG_0378 |
56°02.740’N | 02°21.208’W | ECR_M_MAG_0708 |
56°17.788’N | 02°16.833’W | B_MAG_0200 |
Type See detailed map on our bulletin website
Dropped Mattress - Shell 34" Pipeline
The 6th mattress for the Shell 34” pipeline will be recovered between 14th November - 31st January 2021 by the Seven Falcon. The Fleximat dimensions are 6.4m x 3.0m x 0.5m Weight in Air 15860kg.
During overboarding of the 6th mattress for the Shell 34” pipeline, the crane wire parted when the matt was entering the splash zone at approx. 25m above seabed. The Fleximat dimensions are 6.4m x 3.0m x 0.5m Weight in Air 15860kg.
The mat was being overboarded 15m away from the 34” pipeline, the mattress and frame landed on the seabed 6m away from the 34” pipeline
- Fleximat 6.4x3.0x0.5m 2.4 & 3.2te/m3 Concrete Mattress – Weight in Air 15860kg
- Mattress Lift frame – 6.3x2.4m – Weight in Air 1.7te
- Approx. 25m Crane wire
- 0.5t Crane Block
25m Crane wire and 0.5te Crane Block safely recovered 13:50, 08/09/20.
Plan is to recover mattress but inspections into the current state of the mattress are required to determine a suitable recovery methodology.
A marine licence (ML/634) application has been submitted and approved by BEIS, A variation to extend the marine licence to 14th November 2020 was approved by BEIS on 2nd November, and a second variation for extension to 31st January 2021 is now pending with BEIS. This is due to scheduling delays due to poor weather. The mattress frame and mattress will now be recovered by the Seven Falcon offshore support vessel.
Type See detailed map on our bulletin website
Cable Repair - GTT Segment C
Following cable repair, cable exposed due rocky seabed conditions GTT Guard vessel is patrolling the area to promote awareness of the hazard to fisheries
Notice to fisheries and seabed users in the Irish Sea:
Please be advised that following a recent cable repair to the GTT (Hibernia) Segment ‘C’ between Southport and Dublin, the cable has been deployed as follows:
Initial Splice: 53° 48.3613’N 04° 30.1514’W
Standing bight: 53° 48.2208’N 04° 29.4494’W
Final Splice: 53° 48.1279’N 04° 28.2360’W
It should be noted that throughout the extent of the cable repair, despite repeated attempts at post lay burial by an ROV, the predominantly very rocky seabed has meant that cable burial and hence protection has not been possible.
It should also be noted that at the position of the ‘standing bight’ the cable is standing upright from the seabed at a height of 0.4 metres, with a length over the ground of 2.0 metres.
All seabed users are requested not to deploy equipment which engages with the seabed in this area, to avoid snagging of the cable and particularly so, at the standing bight area.
In case of any issues, please do not hesitate to contact the GTT Hibernia emergency contact number on: +353 1 867 3600 Option 2
Type See detailed map on our bulletin websiteExposed Pipelines - Scott Field
Pipelines in CNOOC’s Scott field have experienced upheaval bucking. As a result, in three locations, pipelines are now exposed and present a significant snagging hazard. Sea users are strongly advised to avoid these locations.
Detailed below, to avoid hazardous interaction with these sections of exposed pipeline, pending the execution of mitigation works.
Type See detailed map on our bulletin websiteDropped Object - Hornsea Two Offshore Wind Farm
Noise monitoring frame(steel 1m3 frame approx. 40kg), hydrophone,riser buoy,clumped(100kg chain clump weight) & 50m Dyneema riser line(dia.~25 mm)remain after the riser line was severed below the surface buoy.Surface marker buoy and pellet buoy recovered.
The riser line was severed below the surface buoy and it has not been possible to recover the items. Investigations as to the cause of the loss are ongoing.
Possible risk of entanglement from remaining riser line.
The SONAR imagery acquired during the recovery attempt indicated the riser line (the main aspect of concern) to be still attached to the anchor weight and suspended in the lower part of the water column. Given the elapsed time, the line will be fully saturated and neutrally buoyant and fully submerged. It is anticipated that the action of tidal currents on the line will cause it to knock down and eventually become entangled in the frame and other gear. Whilst it has not been confirmed, it is unlikely that the line would remain close to the surface.
Type See detailed map on our bulletin websiteRig Move - Askepott
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig Move - Maersk Inspirer
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Ocean Patriot
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreWTG Installation and Commissioning - Moray East Windfarm
WTG Installation and Commissioning installation on the Moray East windfarm
Please be advised that Moray Offshore Windfarm (East) shall commence WTG installation on the previously installed jackets (Figure 2). WTG’s will be installed by the JUV Bold Tern. Once the WTG’s have been installed Acta Centaurus will transfer teams of technicians using a walk to work system to carry out commissioning works in readiness for energisation. Acta Centaurus will be supported by 2 CTV’s (HST Harri and Windcat 40). Installation and commissioning works will commence circa 05th January 2021 until completion
Type See detailed map on our bulletin websiteDogger Bank A&B Landfall HDD Pilot Drilling
The offshore export cables, which will run from the offshore substation platforms (OSP’s) to the landfall, are 191 km in length for Dogger Bank A and 172 km for Dogger Bank B. These cables come ashore to the north of Ulrome on the Holderness Coast.
The main DBA and DBB landfall HDD pilot drilling will commence beyond the MHWS location from the 4th January 2021. A survey will then be carried out once each of the pilot drills has punched out onto sea bed to confirm accurate drill positions. The first survey is expected to be around 6th February subject to drilling progress.
Type See detailed map on our bulletin websiteSurvey - Alexandra, Victor Debris Clearance (Ref: 1164)
A 5 Day Gardline Alexandra, Victor Debris Clearance Survey. Using Vessel MV Ocean Reliance Call Sign: HP6391 From the 15th January until 31st July 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline Limited |
MV Ocean Reliance HP6391 |
N/A |
15/01/2021 - 31/07/2021 For 2 Days |
49 44 |
Survey - Millom West & Calder Debris Clearance (Ref: 1165)
A 2 Day Gardline Millom West & Calder Debris Clearance Survey. Using Vessel MV Ocean Reliance Call Sign: HP6391 From the 15th January until 31st July 2021
Company | Vessels |
Towed Cable Length & Depth |
Duration | Survey Block |
Gardline Limited |
MV Ocean Reliance HP6391 |
N/A |
15/01/2021 - 31/07/2021 For 2 Days |
110 113 |
Marine aggregate sampling survey - Area 481
Tarmac Marine Ltd and Van Oord UK Ltd are planning to undertake a vibrocore sampling survey in and around the marine aggregate dredging Area 481 in the Humber region.
The survey will involve a survey boat deploying a vibrocorer to retrieve seabed samples in and around Area 481.
Type See detailed map on our bulletin websiteDeployment of Buoys - Hornsea Project Two
Ørsted have relocated a 'measurement buoy', as well as two 'transponder buckets' as part of construction of the Hornsea Project Two Offshore Wind Farm.
The devices have been placed within the Order Limits of the Hornsea Project Two offshore wind farm.
Note that these devices will remain on location throughout construction of the Hornsea Project Two Offshore Wind Farm and mariners should take note of their presence.
Type See detailed map on our bulletin websiteRig - Transocean Equinox
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreWreck - Joanna C
Marine Accident Investigation Branch (MAIB) hereby PROHIBITS access to and/or interference with the wreck of fishing vessel Joanna C or its equipment and GIVES DIRECTION requiring that the same shall be left undisturbed until further notice.
Specifically prohibited are: anchoring in the vicinity of the wreck, fishing by nets, trawls or lines in the vicinity of the wreck, and any diving operations on the wreck or its outlying gear. For the purposes of this direction, the vicinity of the wreck shall be taken to be a circle, radius 200 metres, centred on the wreck’s location.
Type See detailed map on our bulletin websiteLidar Deployment - East Anglia Two Wind Farm
SeaWatch LiDAR Buoy (SWLB) has now been redeployed at the East Anglia TWO wind farm site. The SWLB is a sea state measurement instrument. The buoy has been recovered from site leaving some mooring components and the anchor weight on the seabed.
The equipment was deployed by the vessel Afon Wen on 28 November 2020. Grappling operations were also conducted on site and the majority of an old mooring remaining on the site were recovered from the location; the only remaining items on the seabed are an anchor weight, a short length of chain and approximately 10 m of dyneema rope. No further scheduled maintenance is planned on this project, although unforeseen maintenance may be required.
The mooring design is specific to each SWLB deployment and location. The equipment is moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.
The equipment is deployed within the East Anglia TWO wind farm array limits and will be deployed for approximately twelve months from July 2020.
Type See detailed map on our bulletin website
Suspended Wellhead - 47/09b-5
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 16/06a-V2
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 16/02b-5
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 9/19b-29A
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 9/19b-29
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 9/19b-28z
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreSuspended Wellhead - 9/19b-28
Suspended Wellheads are not protected by 500m Safety Zones and are not required to have an overtrawlable protection structure.
Show MoreRig Movement - Paul B Lloyd Junior
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.
Show MoreDeployment of Buoys - Outer Hebrides
Scottish Association for Marine Science (SAMS) has deployed ten moorings off of the Outer Hebrides in Scotland’s Atlantic Frontier. Moorings will be deployed at the ten locations until October 2021.
The moorings have been deployed as part of a European Maritime and Fisheries Fund project on behalf of Marine Scotland Science, and carry research equipment that records underwater noise and the echolocation clicks of marine mammals.
All moorings are sub-surface and extend no more than 6 metres vertically from the seabed. There is more than 50 metres clearance to the surface above every mooring.
Type See detailed map on our bulletin websiteWreck - H17 Wreck Archaeological Exclusion Zone
A known wreck lying to the south of London Array WTG H17 has become exposed. An archaeological Exclusion Zone (AEZ) already exists to protect this known wreck. Marine users are requested to maintain a safe distance around this wreck and current AEZ.
Show MoreDropped Boulders (~3 tonnes each)
In addition to the reported 15x boulder positions from 21 September, we have been informed of a further 19x boulders that have been dropped from the vessel 'Esperanza' in the Dogger Bank area. It is estimated these may be laying ~1m above the seabed.
These boulders have seemingly been deployed in groups at different times, with notification via the UKHO.
Type See detailed map on our bulletin websiteDrilling - Glengorm Appraisal Campaign
The Borr Prospector 5 Heavy Duty Jack Up Rig will be positioned at the Glengorm South appraisal well location 22/26d-C.
The Borr Prospector 5 Heavy Duty Jack Up Rig will be positioned at the Glengorm South appraisal well location 22/26d-C.The rig will remain on location for approximately 216 days before departing to the second appraisal well location on Glengorm, well 22/21c-C.
Type See detailed map on our bulletin websiteRig - West Mira
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreRig - Valaris 123
Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.
Show MoreDeployment of oceanographic sensors - Dee Estuary
Oceanographic sensors will be deployed for a period of 12 months at 4 locations at the mouth and to the north of the Dee Estuary.
Oceanographic sensors will be deployed for a period of 12 months at 4 locations at the mouth and to the north of the Dee Estuary. The sensors will be deployed in early November 2020 using the Port of Mostyn workboat, Eileen. Each location will be marked by a yellow surface buoy with a yellow 'X' topmark and will be lit with characteristics Fl.Y.(5)20s.
A 50m exclusion is requested from the marker buoy. Each location will be visited at 3 month intervals for mooring maintenence, using the Port of Mostyn workboat, Eileen.
Type See detailed map on our bulletin websiteADCP deployment on the seabed - Loch Carron
Deployment of Scientific Acoustic Doppler Current Profiler on the seabed with no surface markers
We intend to deploy a scientific acoustic doppler current profiler on the seabed in outer Loch Carron, with no surface markers.
Location: 57°21.43'N 005°40.41'W
Water depth around 50 m
Type See detailed map on our bulletin websiteAnchor Weight Chain 800kg - East Anglia One
There is most likely an anchor weight remaining on site. This is a bundle of approx. 800kg scrap anchor chain. Dimensions of object: Wave buoy mooring consisting: Anchor chain bundle: approx. 1.5 m x 2 m x 1 m
There is likely <0.5m presence of the anchor at the seabed so no risk to navigation is perceived.
There is a small potential for entanglement with fishing gear should trawling be undertaken in the area should equipment remain on seabed surface. No navigational risks are perceived.
Type See detailed map on our bulletin websiteHavhingsten Cable Project - North Sea
Prior to rock placement there is a maximum of 50m of cable surface laid at each of the 4 crossings. It is advised that extra care is taken when vessels are operating near these areas and that no vessel should trawl within 250m from.
Please be advised that, installation of the Havhingsten fibre optic telecommunication cable system is complete outside of 12nm within the North Sea and at the Seaton Sluice landing. The Whitley Bay stub works are scheduled for March 2021.
The supplier of the Havhingsten cable is Alcatel Submarine Networks (ASN). Intertek are the environmental and permitting consultants.
The entire cable system will comprise marine elements that pass from Denmark to the UK (NE region); from the UK (NW) to the Republic of Ireland; with two segments being installed into landfalls on the Isle of Man.
The cable route in the NE region is shown below. Landfall was made at Seaton Sluice.
Installation was via industry standard burial tools including water jetting and ploughing. Cable burial has been performed to a target of 2m.
The Havhingsten cable crosses 4 pipelines within the UK North Sea, which will require external rock protection. Post-rock installation is now expected in March 2021. The cable crossings start at approximately 72km offshore and beyond.
Prior to rock placement there is a maximum of 50m of cable surface laid with Uraduct protection at each of the 4 crossings. Coordinates of the crossings are provided in the table below. It is advised that extra care is taken when vessels are operating near these areas and that no vessel should trawl within 250m from the listed coordinates.
Crossing |
Approximate distance offshore (km) |
Latitude |
Longitude |
CATS |
72 |
55°15.8028’ N |
000°21.9318’ W |
Norpipe |
113 |
55° 19.1679’ N |
000° 16.0266’ E |
Sleipner to Easington |
140 |
55° 22.3375’ N |
000° 40.9323’ E |
Shearwater to Bacton |
198 |
55° 30.7194’ N |
001° 34.1236’ E |
Type See detailed map on our bulletin website
Dropped Anchor Weight and Mooring
Anchor weight and mooring from lidar buoy, composed of approx 2250 kg scrap anchor chain, 19mm chain, 20 mm dyneema rope. Dimensions of object: Approx. 2.5 m2 (w) and 1 m height.
Show MoreConstruction of Wind Farm (Neart na Gaoithe)
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.
Type See detailed map on our bulletin websiteDeployment of Buoy - Neart na Gaoithe Offshore Wind Farm
Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) successfully deployed a Wave Rider Buoy (WRB) within the Wind Farm Area on 12th Sept 2020. The intention is that this buoy will remain in situ within the NnG Wind Farm site for up to 2 years (Sept 2022)
Show MoreDropped Cylindrical Pipe
Material is smooth cylindrical pipe drill casing. Dimensions of object: 12.2m x 0.2m presumed to be laying horizontal / sub-horizontal on the sea bed. May present some ‘snagging’ risk to fishing gear or similar. Planned Recovery of Item.
Details of any radio Navigational Warnings and/or Notices to Mariner’s:
- None as yet, but geotechnical spread remains at site and in a position to guard and notify as required.
Dropped Large Anchor
A large anchor has been dropped to the seabed by the fishing vessel 'Benarkle' (PD400). The anchor is approximately 3nm SSE of the Ninian South platform.
Show MoreFloating LiDAR System - Seagreen Alpha and Bravo windfarms
Seagreen Wind Energy Limited has replaced the Floating LiDAR System (FLS) at the location shown
The replacement FLS was deployed on the boundary of the Seagreen Alpha and Seagreen Bravo offshore wind farms in the Firth of Forth Offshore Wind Round 3 Zone off the east coast of Scotland. The replacement FLS is approximately 600m to the south-west of the previous location.
The FLS buoy will remain deployed for up to 1 additional year from this date. Service visits will occur at approximately 3-month intervals over this period.
The FLS is buoy mounted and is moored using 150 m long DIN 5683-II mooring chain Ø26 x 234 mm and 3 tonne concrete anchor. The buoy is powered by solar panels and micro wind turbine generators. The buoy is yellow (RAL 1023) in colour and will be clearly marked with two navigation lights (flashing amber, 5 flashes every 20 seconds, nominal range 3-6 nm visibility). The buoy is fitted with a Radar reflector. A service vessel will be on station for approximately four hours during service and recovery visits. Other vessels should maintain a safe distance when passing the vessel and should pass at lowest possible speed to avoid vessel wash effects.
Type See detailed map on our bulletin website
Wet Storage of Caisson Sections - Bruce 500m Safety Zone
Caisson Wet Storage Location
The wet storage area will, when complete, consist of eight by one tonne gabions with two sections of redundant caisson resting on them. The two caisson sections are 20 metres and 18.5 meters in length weighing 18.4 tonnes and 10.3 tonnes respectively. Six by one tonne gabions were placed on the seabed with the 20 meter section of caisson resting atop of them on the 12th of June 2020. The date when the second 18.5 meter section of caisson will be position in the wet storage area has not yet been determined.
Type See detailed map on our bulletin websiteDropped Anchor
Trawler J. Bergvoll Call Sign: LLAJ had come fast to an anchor in Position: 61°32.500'N 001°33.200'E and was dropped in Position: 61°30.371'N 001°40.812'E . Trawl damaged.
Show MoreDrilling - Noble Sam Hartley Golden Eagle Infill
Noble Sam Hartley HDJU undertaking infill drilling from the Golden Eagle platform.
The Noble Sam Hartley will be positioned by wellhead platform 'W' from August 2020 for up to 1 year. The Noble Sam Hartley has three jack-up legs with spud cans to support and stabilise the rig on the seabed and is held in position by a 4-anchor mooring spread. Once the rig is in position, the anchors and chains will be removed.
Type See detailed map on our bulletin websiteExposed Subsea Cable - Apollo South
On behalf of Apollo SCS Ltd, fishermen are advised that following a repair to the Apollo South subsea telecoms cable there now exists a section of exposed/unburied cable.
Due to the nature of the seabed in this area the cable may be exposed and could be a hazard to fishing. Fishermen are asked to ensure that they have the route of the Apollo South cable accurately plotted on their fishing charts. Trawler skippers are respectfully asked to exercise caution when trawling in the vicinity of the Apollo South cable and to keep beyond a distance of at least 500 metres from the charted cable route and, where at all possible, to avoid trawling directly over the cable route. Static gear fishermen are advised not to deploy anchors and end weights in close proximity to the cable.
Type See detailed map on our bulletin websiteClump Weight - Triton Knoll Offshore Windfarm
A 500kg clump weight made from scrapped anchor chains has been dropped
Dimensions of object:
- Various lengths of anchor chain (max 1.3mtr)
- Held together by steel sling and shackles
- Total mass ±500kg
- Connected is a white polyprop line - ± 25-30mtr in length with sinker at end.
Fishing Hazard
Details of fishing hazard
A fishing vessel had to release a large clump of concrete back to the sea bed after having become snagged. The concrete clump could pose further risk to fishermen. The lump had broken into two parts.
Type See detailed map on our bulletin websiteDeployment of Buoys - Neart na Gaoithe OWF
Neart na Gaoithe Offshore Wind Limited (NnGOWL) have completed the deployment of four Cardinal buoys around the Neart na Gaoithe Offshore Wind Farm site.
The marker buoys will remain in place until the construction of Neart na Gaoithe Offshore Wind Farm is complete.
Name | Coordinates |
NNG N - North Cardinal - Quick (Q) White light character | 56°20.424'N 002°14.616'W |
NNG E - East Cardinal - Q (3) 10s White light character | 56°14.329'N 002°08.557'W |
NNG S - South Cardinal - Q (6) + Long (L) FL 15s White light character | 56°12.293'N 002°09.760'W |
NNG W - West Cardinal - Q (9) 15s White light character | 56°17.057'N 002°21.083'W |
The buoys will be deployed for the duration of the construction of Neart na Gaoithe Offshore Wind Farm. The buoys will be inspected and maintained at least every 12 months.
There are currently two Guard Vessels present on site, which will be on site for the duration of the Neart na Gaoithe Offshore Wind Farm construction period. The guard vessel is either:
- Artemis, call sign MVIX5;
- Tranquillity S, call sign MJUH9 or
- Seagull, call sign MVBO2.
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 websitePlugged 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 websiteMacCulloch Area – Location of Donan (Dumbaton/GP3) Gas Export Tie-In Skid
Post decommissioning of the MacCulloch FPSO / Field in UKCS Block 15/24, a Guard Vessel is no longer in position at the location of the Tie-In Skid at MacCulloch
After the decommissioning of the MacCulloch FPSO / Field in UKCS Block 15/24, a Guard Vessel is no longer in position.
The Donan (Dumbarton) Field, located in UKCS Block 15/20, has an out of use Gas Export pipeline (PL2324) which is still connected to a Tie-In Skid located within the previous MacCulloch subsea 500m zone.
Please be aware that this subsea Tie-In Skid remains in place at this location. The structure has been notified and recorded on the NDR / FishSafe websites since 2006/07, but has been previously monitored by the guard vessel.
Type See detailed map on our bulletin website
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 websitePlugged and Abandoned Well : Alwyn South
Alwyn South UKCS 3/9 : Abandoned Wellhead (3/9a-11)
No overtrawlability trial done yet, rough ground may be experienced.
Type See detailed map on our bulletin websiteCoils of Steel Rope - Neart Na Gaoithe Offshore Wind Farm
The Glomar Wave has discovered two seabed hazards, within the boundaries of the Neart na Gaoithe Export Cable Corridor. A 50-metre exclusion zone is requested around each of the following locations for safety reasons, until they can safely be removed.
Show MoreFreespans - Breagh Pipelines
Two freespans have been identified on the 20” gas export line (PL2768). Please exercise caution in this area.
Start Position | End Position |
Length (m) |
Height (m) |
54°36.952'N 00°14.608'E | 54°36.952'N 00°14.599'E | 23.15 | 1.00 |
54°39.576'N 00°49.814'W | 54°39.577'N 00°49.827'W | 30.37 | 1.00 |
Type See detailed map on our bulletin website
Pipeline Span - PL3088, Cygnus Field
The PL3088 Cygnus Export Pipeline Span located ~21km South West of Neptune’s Cygnus Alpha Complex.
The PL3088 Cygnus Export Pipeline Span located ~21km South West of Neptune’s Cygnus Alpha Complex, as reported during the 2019 pipeline inspection campaign. The 29m span length and 0.26m span depth shown below could present a Hazard to Fishing.
Start Position | End Position | Length (m) | Height (m) |
54º27.672’N 02º01.612’E | 54º27.664’N 02º01.589’E | 29m | 0.26m |
Type See detailed map on our bulletin website
Exposed Cable Sections - EirGrid East West Interconnector
Following a recent marine survey along the route of the EirGrid East West Interconnector power cable, is was found that the cable is currently exposed at two locations within UK 12-mile territorial waters fishery limit off the North Wales coast.
In the interests of maritime safety, mariners/fishermen are advised not to anchor, trawl or deploy bottom contact fishing equipment in the vicinity of the EirGrid East West Interconnector power cable route and within the boundary box of the exposed cable sections as detailed.
Type See detailed map on our bulletin websiteBreagh Pipelines - Exposed Fibre Optic Cable
The Breagh fibre optic cable (PL2770) is exposed on the seabed along various stages of the route between Redcar and the Breagh A platform.
A scallop dredger became snagged on an exposed section of the fibre optic cable in June 2019 causing serious damage to the fibre optic cable and subsequently had to abandon retrieval of his gear for safety reasons. This notification is made to the fishermen, operating between Redcar and the Breagh A platform, to be advised that the fibre optic cable represents a serious snag risk to both scallop dredgers and static gear fishing in the vicinity of the line.
Fishermen are advised to stay away from the line to avoid the risk of becoming snagged on the unburied sections of cable.
Breagh Alpha Platform | 54°35.693'N 000°25.926'E |
IP1 | 54°36.372'N 000°24.471'E |
IP2 | 54°37.462'N 000°06.365'W |
IP3 | 54°38.642'N 000°40.856'W |
IP4 | 54°39.893'N 000°55.992'W |
IP5 | 54°37.757'N 001°04.765'W |
Type See detailed map on our bulletin website
Cable spans
Surveys at Greater Gabbard show that there are 8 free-spans which are listed below.
Location |
Span Length (m) |
Span Height (cm) |
Start of Span |
End of Span |
L1 cable |
6 |
0 |
52° 12.284'N 001°39.364'E |
52°12.283'N 001°39.369'E |
L1 cable |
8 |
13 |
52° 12.271'N 001°39.434'E |
52°12.270'N 001°39.441'E |
L1 cable |
8 |
20 |
52° 12.064'N 001°40.559'E |
52°12.061'N 001°40.565'E |
L2 cable |
15 |
5 |
52° 12.128'N 001°40.524'E |
52°12.124'N 001°40.535'E |
L2 cable |
8 |
76 |
52° 12.119'N 001°40.560'E |
52°12.118'N 001°40.567'E |
L3 cable |
3 |
11 |
52° 12.169'N 001°40.502'E |
52°12.169'N 001°40.504'E |
L3 cable |
13 |
34 |
52° 12.148'N 001°40.594'E |
52°12.146'N 001°40.604'E |
L3 cable |
17 |
10 |
51° 59.194'N 001°57.431'E |
51°59.187'N 001°57.442'E |
Whilst the results continue to be processed, Balfour Beatty have asked that in the interest of safety and the integrity of the cable, extreme caution be used when Fishing near the export cables and that Fishermen refrain from using towed gear across the export cables wherever possible.
Type See detailed map on our bulletin website
Exposed sections of cable
Surveys at Gunfleet Sands offshore wind farm have illustrated that some array/in-field cables are lying exposed on the seabed and are no longer buried and there is one freespan. These may represent a hazard to fishing.
These are the following cables located in the eastern part of Gunfleet Sands 1 and the north eastern part of Gunfleet Sands 2.
Location |
Exposure Length (m) |
Start of Exposure |
End of Exposure |
Between turbines C06-D06 |
4 |
51°44.447'N 01°15.045'E |
51°44.445'N 01°15.046'E |
Between turbines F06-F07 |
23.7 |
51°44.204'N 01°16.057'E |
51°44.209'N 01°16.076'E |
Between turbines F07-F08 |
78.4 |
51°44.471'N 01°16.744'E |
51°44.448'N 01°16.688'E |
Between turbines F08-F09 |
851.7 |
51°44.485'N 01°16.777'E |
51°44.726'N 01°17.398'E |
Between turbines G06-G07 |
21.7 |
51°44.008'N 01°16.270'E |
51°44.002'N 01°16.255'E |
Between turbines G07-G08 |
21.9 |
51°44.273'N 01°16.948'E |
51°44.267'N 01°16.932'E |
Between turbines G08-G09 |
20.7 |
51°44.276'N 01°16.953'E |
51°44.280'N 01°16.969'E |
Between turbines G08-G09 |
16.6 |
51°44.522'N 01°17.591'E |
51°44.527'N 01°17.603'E |
There is a freespan at the following array Cable Position:
Location |
Exposure Length (m) |
Start of Exposure |
End of Exposure |
Between turbines C06-D06 |
4 |
51°44.447'N 01°15.045'E |
51°44.445'N 01°15.046'E |
Type See detailed map on our bulletin website
Exposed Cable Section (SHEFA)
There is an exposed section on the SHEFA cable coming out of Orkney between the two positions below.
Show More