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AOR Attic Oil Recovery Operations - Brent Charlie



Brent Charlie attic oil recovery operations from the concrete gravity based structure.


In 2025 Shell plan to undertake Attic Oil Recovery (AOR) at Brent Charlie. The planned operations will be undertaken in a split campaign with two phases, phase 1a and 1b. Campaign 1a covers cell access and fluid characterisation and campaign 1b covers the recovery of cell fluids.

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Diving Support Vessel (DSV) Activity at Kraken



Diving Support Vessel (DSV) 'Seven Atlantic' will be performing Inspection, Repair and Maintenance (IRM) activities at Kraken field.


Diving Support Vessel (DSV) 'Seven Atlantic' will be performing Inspection, Repair and Maintenance (IRM) activities at Kraken field.

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Diving Support Vessel (DSV) Activity at Thistle Platform



Diving Support Vessel (DSV) 'Seven Atlantic' will be performing Inspection, Repair and Maintenance (IRM) and decommissioning activities at the Thistle platform.


Diving Support Vessel (DSV) 'Seven Atlantic' will be performing Inspection, Repair and Maintenance (IRM) and decommissioning activities at the Thistle platform.

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OBN Seismic Survey ABP25201 - Northern North Sea



Additional information for Trawlers and Fly-Shooters: the area where the nodes are located on the seabed. Location of the nodes that Havila Subsea has on the seabed as of today, 14. July 2025. Havila Subsea has deployed all nodes on the seabed and begun recovering nodes from the south, working its way north. Please call Havila Subsea, Oceanic Champion or Thor Alpha on VHF ch 16 to get the latest update if you plan to fish around the survey area.


14.07.2025 - Update: Additional information for Trawlers and Fly-Shooters: the area where the nodes are located on the seabed.

Location of the nodes that Havila Subsea has on the seabed as of today, 14. July 2025. 

 

14. July

Havila Subsea has deployed all nodes on the seabed and begun recovering nodes. We work our way from south to north in the recovery process..

 

The estimated end of the survey is 18 july

 

Please call Havila Subsea, Oceanic Champion or Thor Alpha on VHF ch 16 to get the latest update if you plan to fish around the survey. 

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Survey Activity - Kyle Field



Survey Vessel to undertake Environmental Baseline Sampling / Grab Sampling activities at the Kyle field, between proposed well location and Bittern B manifold, where proposed pipeline may be installed.


Survey works expected to last 2 days.

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Rig - Askeladden



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


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Installation of Mattresses (part 2) - Atlantic & Cromarty



During a survey of the Decommissioning planning we have identified the presence of 49 concrete mattresses installed along the Cromarty pipeline. These mattresses are not located in 500m zones and were installed in 2003. The locations of the matt's are identified in the co-ordinates below, noting there are multiple matt's at some locations hence why there are 15 locations and 49 mattresses.


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Debris surveys - Leman 27A, Leman 27J, Trent, Ravenspurn North and Indefatigable 18A



Debris surveys centred around the Leman 27A (49/27), Leman 27J (49/27), Trent (43/24), Ravenspurn North GCD (43/26) and Indefatigable 18A (49/18) platforms. The surveys will utilise a combination of bathymetric Multibeam echosounder (MBES), Side Scan Sonar (SSS) and magnetometer.


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Environmental Survey - Atlantic and Cromarty



Environmental survey using Fugro Galaxy consisting of Hull mounted Multi-beam, towed Side Scan Sonar and magnetometer, environmental grabs and drop down camera. Centred on 16" GAS ATLANTIC MANIFOLD - ST. FERGUS pipeline (PL2029). Inshore end point is East of 1° 40' line.


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Nelson Pipeline & DC Environmental Surveys



Environmental survey using Fugro Galaxy consisting of Hull mounted Multi-beam, towed Side Scan Sonar, environmental grabs and drop down camera. Surveys centred on pipelines plus 3x3km boxes around drill centres.


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Subsea Well Abandonment including diving operations - Strathspey Satellite structure



Subsea well Plug and Abandonment operations at the Strathspey Satellite structure, using a Light Weight Intervention Vessel


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Site Survey - Gannet F



Geophysical and Environmental site survey with Fugro Galaxy utilising MBES, SSS, SBP, 2DHR, Drop Down camera and grab samples


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Site Survey - Penguins DC4



Geophysical and Environmental site survey with Fugro Galaxy utilising MBES, SSS, SBP, 2DHR, Drop Down camera and grab samples


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Nearshore Geophysical Cable Survey - Teesside



The geophysical nearshore survey for the Northern Endurance Partnership (NEP) (bp) which commenced on 26 April 2025 is now expected to end ~ 31st July 2025. The survey will utilise Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub Bottom Profiler (SBP) and Magnetometer equipment, some of which will be towed up to 150 metres astern of the survey vessel.


A simplified area is displayed within this Kingfisher Bulletin the full list of coordinates and extent of the planned survey within the NEP Teesside Cable Survey Area is shown in table 1 of attached notice. The EGS Echo will only survey areas >30m in water depth along the NEP cable survey area.

 

An NFFO Offshore Fisheries Liaison Officer (OFLO) will be onboard the vessel during the survey available on VHF Channel 16.

 

Contact details for the Fishing Industry Representative and Company Fisheries Liaison Officer are provided in attached.

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Development Project - Victory Field



The Victory Project is to develop the Victory subsea gas field as a single well tie-back to the Shetland Gas Plant. This is to be achieved by drilling a new well and installing a pipeline to route hydrocarbons via an existing hot tap tee into the existing Greater Laggan Area (GLA) pipeline system to export via the Shetland Gas Plant. Well control will be provide via an umbilical pipeline route from Edradour manifold location to the Victory Well.


Note: the Victory wellsite is within an Offshore Development Area and as such, it is advised not to fish within an ODA because of potential construction activities.

 

Vessel Plan for 2025 *UPDATED*

 

Vessel Name

Location

Arrival

Departure

Activity

Guard vessel 3  Victory 10/06/25 21/09/25 Guard Pipeline at Victory
Guard vessel 5 Victory 05/07/25 04/09/25 Guard Umbilical at Edradour
Deep Explorer Victory 01/07/25 8/07/25 DSV Deep Explorer - Diverless work from Skandi Africa incl. Umbilical Pr e-Lay Survey & Flexible  Pre-Lay Survey
Skandi Africa Victory 05/08/25 02/09/25 Flexible & Umbilical Installation
Deep Arctic Victory 31/07/25 21/08/25 Spool Install, Spool Tie-ins, Pre-Commissioning & Mattresses
Guard vessel  4 Victory 11/08/25 22/09/25 Guard Pipeline at H TT 1-2
Deep discoverer Victory 15/08/25 03/09/25 Victory Hot Tap Execution & Protection Structure Install
Deep discoverer Victory 04/09/25 16/09/25 Hot Tap Tee Flexible Tie-In & Valve Configuration at Victory

TBC

Victory

01/09/25

22/09/25 Rock Campaign 4b (Post tie-ins / Flexible)
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Umbilical retrieval - Gaupe



Workscope has been cancelled. New date to be submitted. Project will disconnect the umbilicals PLU2784 and PLU2785 within the 500m exclusion zone at the Armada Platform, in preparation for removing the umbilical sections between safety zone and the UK-Norway median line. Vessel: Skandi Hera


Project will disconnect the umbilicals PLU2784 and PLU2785 within the 500m exclusion zone at the Armada Platform, in preparation for removing the umbilical sections between safety zone and the UK-Norway median line. 

Vessel: Skandi Hera

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Pipeline and Umbilical Installation (Subsea) - Belinda



Installation of oil production flowline, gas lift pipeline and service umbilical.


An 8 inch oil production flowline will be installed (trenched and buired) from the exisiting GEEBB manifold (at Triton FPSO) to the new Belinda Valve skid located approx 5km south east of Triton. A 3 inch gas pipelines (piggy backed with the 8 inch) will also be was installed the same trence. 

A servise umbilical will be installed from the existing Evelyn valve skid to the Belinda valve skid located 7km north east of Evelyn. 

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Bittern WI Pipeline replacement and tie in spool works - North Sea



Notification of commencement of Bittern WI Pipeline replacement and tie in spool works as per the condition of the Consent to Locate permit.


The works shall comprise the installtion of the following subsea pipeline or cable, or system of subsewa pipelines and cables:

 

- Bittern WI pipeline replacment and tie in spool

 

Dana intend to reinstate water injection at the Bittern field through installation of a new 12” water injection pipeline between the Triton FPSO and Bittern WA and WB XTs. The pipeline will be deployed by way of a pipelay vessel and laid on the seabed. The pipeline will subsequently be trenched and buried using a jet trencher. The pipeline will be accompanied by a number of jumpers and spools to tie-in to the water injection system. Rock placement, grout bags and mattresses may be required over the length of the pipeline.

 

As part of the system, they intend to install a 33.3 m tie-in spool connecting the new water injection pipeline (PL6609) to the WB XT. A combination of grout bags and concrete mattresses will be used to protect the pipeline.

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Bittern Valve Skid (BIVS) - North Sea



Notification of the commencement of the Bittern Valve Skid (BIVS)Works as per the condition of the Consent to Locate permit.


The Works shall be located at: 57 04' 58.69" N, 00 53' 20.47" E Block 21/30.

 

The structure will be loaded onto the installation vessel in Peterhead and seafastened before undertaking the short transit to the field. Upon arrival, the seabed will be prepared by the temporary installation of transponder beacons to allow accurate positioning. The ship's crane will pick up the structure and overboard it clear of any subsea assets. The vessel will then step into the desired location and lower the structure to the seabed. The ship's ROV will disconnect installation rigging and recover all transponders and a structure based gyro.

 

As the structure is required to be located within the FPSO swing circle, heading control will be arranged for the FPSO to maintain a safe clearance between the FPSO and construction vessel. Once installed no further navigation aids are required.

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Rig - Noble Resolute



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


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Rig - Valaris 248 (ex Gorilla VI)



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


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Rig - Valaris 122



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


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Rig Move - Maersk Inspirer



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


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Rig - Linus



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


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Rig - Askepott



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


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Rig - Noble Lloyd Noble



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


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Rig - COSL Promoter



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


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Rig - Noble Reacher (ex Maersk)



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


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Rig - Noble Integrator



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


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Rig - West Elara



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


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Rig - Noble Invincible



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


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Rig - Seafox 4



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


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Rig - Ensco 92



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


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Rig - Valaris 123



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


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Rig - Valaris Stavanger



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


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Rig - Maersk Innovator



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


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Subsea Wells Decommissioning - Davy North



The HAEVA Jackup Barge will undertake well plug and abandonment (P&A) works and the removal of the Wellhead Protection Structure (WHPS) at the Davy North subsea well.


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Subsea Wells Decommissioning - Davy East



The HAEVA Jackup Barge will undertake well plug and abandonment (P&A) works and the removal of the Wellhead Protection Structure (WHPS) at the Davy East subsea wells.


The HAEVA will first be at Davy East from 15 July 2025 at the earliest for at least 35 days.

See detailed map on our bulletin website

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Rig - Deepsea Aberdeen



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


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Rig - Deepsea Atlantic



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


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Rig - Well Safe Protector



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


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2025 Decommissioning Trawl Survey



The MV Atlas will be completing decommissioning activities at the Viking field 500m zones. The vessel will be at location from the 3rd July for ~ 60 days.


The MV Atlas will be completing decommissioning activities at the Viking field 500m zones. The vessel will be at location from the 3rd July for ~ 60 days. 

See detailed map on our bulletin website

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Snagging Hazard - SCOTT Platform Pipelines



The South & West WI lines have suffered from Upheaval Buckling and they have locations that can potentially become snagging hazards. The pipelines start from the platform and end at the WI manifolds. The length of the West WI line is 1.8km (1NM), to the South is 3.6km (1.95NM).


Two pipelines from the Scott platform to the West Water Injection Manifold and South Water Injection Manifold may represent a snagging hazard to fishing vessels.  A section of each  lines lies within existing 500m zones.  The following guidance is specific for the sections of pieline lying outside of these. Note: this issue has been discussed with Scottish Fishermen’s Federation.  CPEL is aware that we cannot prohibit the transit or over trawl of the areas external to the 500m zones however we hope that fishing vessel's will not deliberately over trawl a site for which they have been warned has a snagging risk. The primary responsibilities of the field ERRV vessels remain unchanged and they will continue to warn vessels who are demmed to be encroaching into the area.  The following pertains only to the protection of the lines external to existing 500m zones where incursion rules do not apply: • Fishing vessels, likely to come pass over the lines given current heading at a distance not greater than 5nm travelling at speeds of below 6 kts; or vessels clearly demonstrating that they are performing fishing activities with gear deployed will be challenged;  Fishing vessels travelling at speeds of 6kts and above will not be challenged; • Challenge shall take the form of a clear warning to the fishing vessels of the existence of subsea snagging hazards; • When challenge has been made the ERRV shall include a note in the official bridge log detailing, date, time, vessel challenged and any actions taken by the fishing vessel; • Where a potential over trawl has occurred the ERRV shall notify the CNOOC representative using existing vessel 500m zone incursion process detailing, date, time, vessel(s) involved, point of overtrawl.

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Post Decommissioning Clearance - Drill cuttings within Safety Zone



Please note that although a successful SFF post decommissioning seabed trawl verification sweep has taken place in the Kingfisher 500 metre safety zone, this did not include the central wellhead location and surrounding drill cuttings and hazards may remain in the location highlighted.


Using best endeavours and practice available, no oilfield related obstructions were encountered in the remainder of the 500 metre safety zone and nearby section of rock dumped pipeline (from 58°46.3423'N, 001°28.6741'E to 58°46.3237'N, 001°28.8188'E). To the best of our knowledge the swept areas have been successfully cleared of all equipment / infrastructure and at the time of these trials the swept areas were found to be safe for normal fishing operations.

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Decommissioning - Galahad



The OBANA Heavy Lift Vessel will undertake topside and monopod removal activities at the Galahad installation. The OBANA will be located within the Galahad 500m exclusion zone.


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Offshore Geophysical Cable Survey - NEP Teesside



The geophysical and geotechnical offshore survey for the Northern Endurance Partnership (NEP) (bp) which commenced on 14 April 2025 is now expected to be extended until the ~ 03rd August 2025.


The geophysical and geotechnical offshore survey for the Northern Endurance Partnership (NEP) (bp) is scheduled to commence on 14 April 2025 and is expected to last for approximately 75 days, allowing for potential delays due to adverse weather conditions. The survey will utilise geophysical survey equipment (Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub Bottom Profiler (SBP) and Magnetometer equipment) some of which will be towed up to 150 metres astern of the survey vessel. It will also utilise geotechnical equipment (Cone Penetration Test {CPT} equipment, Vibracorer and Day Grab sampler). The extent of the planned survey within the NEP Teesside Cable Survey Area >30m in depth shown in Figure 1 of the attached notice. Coordinates of Teesside Cable Survey Area also provided in Table 1 in the attached notice. An NFFO Offshore Fisheries Liaison Officer (OFLO) will be onboard the vessel during the survey available on VHF Channel 16. Contact details for the Fishing Industry Representative and Company Fisheries Liaison Officer are provided in the attached.

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Well-Safe Protector - York platform P&A



The Well-Safe Protector will move location from well D15A in the Dutch sector to the York platform in UKCS block 47/3 to undertake well plug and abandonment, on or around 9th June 2025. This date is subject to change depending on weather and operational requirements. Operations at York are expected to finish in the area by the end of October 2025.


The Well-Safe Protector will move location from the D15 platform in the Dutch sector to the York platform in UKCS block 47/3 to undertake well plug and abandonment, on week beginning 9th June 2025. This date is subject to change depending on weather and operational requirements. Operations at York are expected to finish in the area by the end of October 2025.

 

  • When the Well-Safe Protector is in-situ, due to technical difficulties associated with synchronising navigational systems between the rig and the platform, the York navaids will be switched off. Dispensations from conditions 5 e) and 5 g) are in place. The Well-Safe Protector will maintain Standard Marking Schedule Requirements.
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Infill Drilling - Cygnus Field



The Valaris Norway is adjacent to the Cygnus Alpha, operating within the 500m zone. Anchors may extend beyond this point. *Please note that there is a slight delay between Cygnus A and Valaris Norway navigational aid activation, following assessment a dispensation has been approved under CL/63/8*


The Valaris Norway is adjacent to the Cygnus Alpha, operating within the 500m zone. Anchors may extend beyond this point. 

*Please note that there is a slight delay between Cygnus A and Valaris Norway navigational aid activation, following assessment a dispensation has been approved under CL/63/8* 

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Caisson removal on PUQ platform - Island Ocean vessel



Serica is proposing to remove two of the Bruce Platform caissons. Caissons C12 and C15 are seawater lift caissons that are being removed due to degraded integrity. Both caissons C12 and C15 are no longer in use. The caissons are mounted on the PUQ jacket with a termination depth of -53.5m. The Island Ocean MPSV will be working with the Bruce Platform 500m zone throughout the operation.


Serica is proposing to remove two of the Bruce Platform caissons. Caissons C12 and C15 are seawater lift caissons that are being removed due to degraded integrity. Both caissons C12 and C15 are no longer in use. The caissons are mounted on the PUQ jacket with a termination depth of -53.5m. The Island Ocean MPSV will be working with the Bruce Platform 500m zone throughout the operation.

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Noble Innovator - Mungo



Please be advised that the Jack-up rig 'Noble Innovator' is alongside the Mungo Platform, and will remain in this position for the foreseeable.


Please be advised that the Jack-up rig 'Noble Innovator' is alongside the Mungo Platform, and will remain in this position for the foreseeable.

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500m controlled zone - Abbey-2 WHPS Incomplete



The Subsea Abbey-2 WHPS (wellhead protective structure) is installed over the well, but the structure requires further work to complete. The work is planned to be completed in the spring, but in the meantime the location is to be guarded by a guard vessel, initially the Putford Terminator ERRV will maintain a controlled 500m zone around the Abbey-2 subsea well location. Work is expected to be complete in mid June and this controlled zone will end.


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North Morecambe DPPA Platform - Irish Sea



The EDT Protea will mobilise from Blackpool to the North Morecambe DPPA platform in UKCS block 110/2 to act as a walk to work vessel, on or around 15th June 2025. Operations will be conducted within the existing DPPA 500m exclusion zone and are expected to take 46 days with completion expected by the end of August 2025. These dates are subject to change depending on weather and operational requirements.


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Stena Don rig in Curlew D field



15th May: Install 12 x Pre-Lay Anchors. 21st May: Stena Don will be on location hooking up anchors and commencing operations. 10th September: Rig off location


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

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Metocean Buoy Installed - Pierce Area



A spherical wave buoy with a diameter of 0.4 meters was installed in the Pierce Field.


WGS84:  57° 09' 21.72''N, 002°16' 11.34'' E

Clump weight: 140 kg steel ballast with chain

Deployment date: 13/04/2025

Radius cone: ~120m  

Model: Sofar Spotter Buoy

Diameter: 0.43 m

Colour: yellow

LED light: 0.5s flash every 2.5s with a visibility of at least 1 nm.

There are two auxiliary floats, each with a diameter of 11'' and in red, within 20 m of the buoy.

See detailed map on our bulletin website

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Metocean Buoy Installed - Penguins Area



A yellow spherical wave buoy with a diameter of 0.9 meters was installed in the Penguins Field. The buoy has a clump weight of 500kg (steel ballast with chain) and has a radius cone of 300m. LED light: 5 flashes in 10 s 20 s repetition 360° around for 4 Nm distance


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Rig - JB-115 ACP HKW-B



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


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Decommissioning - Kilmar



The ERDA Jackup Barge will undertake hydrocarbon safe (HCS) and well plug and abandonment (P&A) works at the Kilmar installation. The ERDA will be located within the 500m exclusion zone .


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Decommissioning - Amethyst C1D



The OBANA Heavy Lift Vessel will undertake jacket removal activities at the Amethyst C1D installation. Works will be between 1 August 2025 and 31 August 2025.


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Decommissioning - Garrow



The ERDA jackup Barge will undertake hydrocarbon safe (HCS) and well plug and abandonment (P&A) works at the Garrow installation. Works will be between 10 June 2025 and 1 August 2025. The ERDA will be located within the Garrow 500m exclusion zone.


The ERDA jackup Barge will undertake hydrocarbon safe (HCS) and well plug and abandonment (P&A) works at the Garrow installation. Works will be between 10 June 2025 and 1 August 2025. The ERDA will be located within the Garrow 500m exclusion zone.

See detailed map on our bulletin website

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Shell 2025 Annual Pipeline Inspection - Northern and Central North Sea



The Deep Vision (Call sign 2CVC8) will be carrying annual pipeline inspection along various pipelines and structures in the Northern and Central North Sea.


The Deep Vision (Call sign 2CVC8) will be carrying annual pipeline inspection along various pipelines and structures in the Northern and Central North Sea.  The vessel will work north to south, starting at the Penguins field and completing north of the Fulmar platform.   The vessel will be performing non-intrusive ROV survey both dynamically along pipelines and sometimes stationary along small lines and structures.

See detailed map on our bulletin website

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Subsea basket temporarily left on location - Jacky



Subsea basket left in place awaiting removal


A subsea basket containing a cut off of previously exposed pipeline at PL2557 has had to be left in situ due to problems with the vessel crane.  Vessel to return and remove basket at earliest opportunity.  The basket being left on the seabed is temporary.

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Rig - Safe Caledonia



The semisubmersible floatel Safe Caledonia is currently located at the Captain Field, positioned on the west side of the WPP platform. The unit is secured in place using a 10-point mooring system. While the floatel itself remains well within the WPP 500-meter safety zone, the majority of its mooring lines extend significantly beyond this boundary. These mooring lines are composed of chain, fiber, and rig wire, and are supported by intermediate buoys.


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Rig - Valris 72



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


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Rig - Paul B Loyd Junior



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


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Rig - Valaris 72



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


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Rig Move - Dolphin PBLJ to Joanne Field



Harbour Energy is scheduled to conduct subsea well intervention operations on five wells (30/07a-M5, M8, M9, M10, and M11Z) in the Joanne field. Operations will be carried out using the Dolphin PBLJ semi-submersible drilling rig, which will relocate from the shipyard in Olen, Norway to the Joanne field on 29 August 2025.


Harbour Energy is scheduled to conduct subsea well intervention operations on five wells (30/07a-M5, M8, M9, M10, and M11Z) in the Joanne field. Operations will be carried out using the Dolphin PBLJ semi-submersible drilling rig, which will relocate from the shipyard in Olen, Norway to the Joanne field on 29 August 2025.

See detailed map on our bulletin website

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Subsea Decommissioning - Durango



The HAEVA Jackup Barge will undertake subsea well plug and abandonment (P&A) works and the removal of the Wellhead Protection Structure (WHPS) at the Durango subsea well. Works will be between 15 June 2025 and 1 August 2025.


The HAEVA Jackup Barge will undertake subsea well plug and abandonment (P&A) works and the removal of the Wellhead Protection Structure (WHPS) at the Durango subsea well. Works will be between 15 June 2025 and 1 August 2025.

See detailed map on our bulletin website

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Subsea Construction scope - Murlach Project



Subsea construction activities associated with the Murlach project in block 22/24h.


Subsea construction activites including XT Commissioning, umbilical Installation, spool installations, gas lift line installation etc as part of the Murlach project, in block 22/24h of the Central North Sea.

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Offshore Development Area - Penguins Redevelopment Project



NOTE: The Penguins Field has been granted an extension to 31/05/26. The project includes extending the life of the existing wells and addition of eight new wells. The new wells will be tied into the existing Penguins infrastructure and connected into a new FPSO. The pipeline system will be split into a North and South production pipeline, with the FPSO positioned close to the centre of the field.


UKCS Block ID: 211/13a and 211/14a 

Water Depths refer to Lowest Astronomical Tide (LAT) with all depths quoted in metres. 

No visible marker (marker buoys) will be deployed. 

Schematic drawing has been attached.

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NORPIPE Wye Valve Replacement



ConocoPhillips Norge intends to undertake some pipeline works at the NORPIPE Wye connection.


ConocoPhillips Norge intends to undertake some pipeline works to replace the existing ball valves at the main NORPIPE Wye connection. The Deep Arctic Dive Support Vessel will be on location from the 30th May for up to 21 days. This will be followed by a Flexible Fallpipe Vessel to lay some deposits in July or August for approximately 1 day. This notification is until the 31st August to cover both vessels activities.

See detailed map on our bulletin website

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Subsea Installation Buoy - Rosebank Offshore Development Area



A submerged marker buoy has been placed. The buoy is tethered 167m above the seabed at a depth of 934m. Vessels are requested to avoid.


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Rig - Deepsea Nordkapp



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


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Irish Sea in Combined Operation with the Lennox Platform



Irish Sea Pioneer Rig Move from Hamilton to the Lennox Platform (Liverpool Bay) completed. Irish Sea Pioneer now in combined operation with the Lennox Platform


Will be in combined operations (COMOPS) for approximately 180 days supporting ctivities for CCS (Carbon Capture & Storage)

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

 

See detailed map on our bulletin website

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Rig Move - Dolphin PBLJ to Nicol Field



Harbour Energy are scheduled to complete P&A operations (using the Dolphin Paul B Loyd Junior – Semi Submersible) at Caledonia 16/26-25 – and then the rig to move to the Nicol field to abandon two subsea wells (15/25a-N1W & N2U). The move is currently planned for 20/05/25.


Harbour Energy are scheduled to complete P&A operations (using the Dolphin Paul B Loyd Junior – Semi Submersible) at Caledonia 16/26-25 – and then the rig to move to the Nicol field to abandon two subsea wells (15/25a-N1W & N2U). The move is currently planned for 20/05/25. 

See detailed map on our bulletin website

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Rig - Deepsea Stavanger



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


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Rig Move - COSL Pioneer



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


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Decommissioning preparation works - Eider Alpha



The Eider Alpha unmanned installation will have a construction vessel and ERRV working inside the 500m zone conducting preparation works for topside removal by HLV at latter end of working window provided.


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Nelson Platform Derrick & Substructure Removal Operations



Derrick & Substructure Removal Operations. Removal operations in advance of platform decommissioning. 


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Stena Don rig in Penguins Field



This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone. Max horizontal anchor distance from rig center 1400m.


8th May: 8x Pre-lay anchors will be spotted
13th May: Stena Don will be on location and hooking up anchors and commencing operations.
26th July: Stena Don will be off location moving to Curlew.

Max horizontal anchor distance from rig center 1400m.

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Subsea Facilities Inspections - North North Sea



Vessel based ROV inspection to inspect fixed subsea facilities (wellheads, manifolds, pipeline tie-in structures) using one or more remotely operated vehicles from ROVSV Deep Ocean Deep vision.


Scope will be to inspect fixed subsea facilities (wellheads, manifolds, pipeline tie-in structures) using one or more remotely operated vehicles from ROVSV Deep Ocean Deep vision.  Fixed locations are at Penguins FPSO, Penguins DC9/8/2/3, NL-WL PLEM,  NL-WL Tie-In 2, Knarr Tie-In Pipeline Structure, FLAGS PLEM Pipeline Structure, Nelson SSIV, Howe field, Arran North & South, Columbus, Gannet D, Gannet G, Gannet F,  Starling & Fram (abandoned wells and Fram field) infrastructure..  These have been inicated with coordiate references.

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Unknown Obstruction - Chestnut Field Well 16y 500m safety zone



During a recent survey an unknown obstruction was encountered at 57°56.915’N, 001°12.575’E. The vessel’s creeper was snagged on a heavy weight and lost in approximately this position. A 0.1nm exclusion zone around this was maintained during the trawl sweep operations - fishermen are recommended to keep clear.


The MV “Fruitful Harvest” PD50 has carried out a post decommissioning trawl verification sweep of the Chestnut Field concerning the locations noted below. In this area the seabed is fairly static and mostly sand and shells, in a water depth of 100-129 metres. Using best endeavours and practice available, we can confirm that at the time of these trials the majority of the swept areas were found to be safe for normal fishing operations – except the areas highlighted in the notes below.

 

Location

Central Position

Coordinates (WGS84)

Comments
Hummingbird FPSO
500m safety zone
57° 58.522’N 001° 14.260’E NOTE 1: At position 57° 58.500’N, 001° 14.300’E the vessel
encountered a small reduction in speed and gear spread, no
damage to gear was reported.
NOTE 2: At position 57° 58.000’N, 001° 15.100’E the vessel
encountered a small reduction in speed and gear spread while
crossing over Anchor 7 and 8, no damage to gear was reported.
WI Well 22-2a-12
500m safety zone
57° 57.281’N 001° 13.646’E NOTE 3: At position 57° 57.300’N, 001° 13.600’E the vessel
encountered a small reduction in speed and gear spread, no
damage to gear was reported.
PL2422 57° 58.140’N 001° 14.052’E NOTE 4: At position 57° 58.200’N, 001° 14.300’E the vessel
encountered a small reduction in speed and gear spread while
crossing the pipeline, no damage to gear was reported.
Well 16y 500m
safety zone
57° 56.997’N 001° 12.828’E

NOTE 5: An unknown obstruction was encountered at

57° 56.915’N, 001° 12.575’E. The vessel’s creeper was snagged on
a heavy weight and lost in approximately this position. A 0.1nm
exclusion zone
around this was maintained during the trawl
sweep operations - fishermen are recommended to keep clear.

Fishing vessels operating in the vicinity should do so with caution in the areas noted above.

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Rig Move - Crossway eagle



This jack-up accommodation rig will be moving to this new position around 28th April 2025. Rig is protected by a 500m safety zone but may have anchors extending beyond this zone.


This jack-up accommodation rig will be moving to this new position around 28th April 2025.  Rig is protected by a 500m safety zone but may have anchors extending beyond this zone.

See detailed map on our bulletin website

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Subsea Decommissioning - Western Isles Locations



Dana Petroleum (E&P) Limited has contracted Boskalis Subsea Services (BSS) for the Western Isles decommissioning project using the CSV Boka Northern Ocean.


Harris and Barra fields are located in Block 201/24a of the UKCS, 160km to the East of Shetland, and apprcximately 500km North-North East of Aberdeen. The water depth in the area varies from approximately 150m to 165m. The Western Isles production storage and offshore vessel (FPSO) has been disconnected and offstation, but production trees and water injections trees via 9-off flexible risers, 2 -off dynamic umbilical's, 2 -off bundle systems with associated spools and jumpers, 2- off mid-water arches (MWA), FPSO mooring piles, concrete mattressess remain on location. Boka Northern Ocean will carryout some of the decommissioning works commencising in early April for up to 90 days on location, note only ROV's operations from the CSV Boka Northern Ocean for this part of the project.

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Rig Move - Swift 10 - Wingate Platform Activity



Mobilization of SWIFT 10 drilling rig and P&A activity of 6 wells on the Wingate platform. Preparations for the decommissioning of the platform including P&A of all wells, conductor removal as well as pipeline cleaning.


Around the first week of April the SWIFT 10 jack-up rig will be mobilized from the Dutch Sector to perform the P&A of all 6 wells on the Wingate platform. The estimated term for completion of this scope is 4 months. During the initial positioning and demobilization of the drilling rig there will be 4 anchors deployed at ~500m from the platform. These will be recovered after positioning of the rig and deployed again when the rig is ready to be demobbed and returned to the Dutch sector.

 

A further notice will be sent when the date for the move is confirmed.

 

Update on timing. Rig schedule now shows the start of the mobilization for April 12th.

 

Rig move update. Departure from Dutch sector now planned for Thursday April 17th with arrival in UK sector of April 18th

 

Update: Departure from Dutch sector now planned for Friday April 18th with arrival in UK sector on April 19th

 

SWIFT 10 Rig is ready to commence decommissioning operations and will remain alongside Wingate platform until end of July

 

See detailed map on our bulletin website

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3D OBN survey - Utsira North



The survey is a shooting methodology where ocean bottom nodes (OBN, single nodes, NO ropes) are rolled, and source operations are conducted centrally within the active node patch. Node Vessels: Havila Subsea. (dual ROV’s and a MantaRay vehicle with 6000 nodes) Source Vessels: Oceanic Champion


The survey will be acquired using the following vessels:

Node Vessels: Havila Subsea. The node vessel will be equipped with dual ROV’s and a MantaRay vehicle with a node inventory of 6000 Manta3000 nodes.

Source Vessels: Artemis Athene/Oceanic Champion. The source vessels are equipped with fully redundant hexa-source arrays of 800cu.in.

 

The survey will start from the south. 

The area where nodes are layed out (present on the seafloor, blue in hte attached picture ABP25201_weeklyprogress_Modelled.png) will be updated regularly by Equinor Marin on BarentsWatch/FiskInfo https://www.barentswatch.no/fiskinfo/ (Seismikk, olje og gass - Equinor aktsomhetsområder, see attachment for example)

 

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Plug and Abandonment Operations - Hudson Wells



Noble Patriot to complete plug and abandonment operations at Hudson wells. Positioned within radius of 61 15 38.99' North 00 42 33.20' East 2 and 61 15 11.08' North 00 44 09.40' East.


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Jackdaw Development - North Sea



The Jackdaw field is an ultra-high pressure/high temperature (uHPHT) reservoir that will be developed with a not permanently attended Wellhead Platform (WHP). Four wells will be drilled at the Jackdaw WHP. Produced fluids will be exported via a subsea pipeline to the Shearwater platform where these will be processed before onward export via the Fulmar Gas Line and the Forties Pipeline System. Vessels for 2025: Normand Drott/ Deep Arctic/Deep Discoverer & HLV Sleipnir.


Jackdaw Installation 2025/2026

New SSIV, tie-in spools and associated protection will be installed using DSV in the Jackdaw 500m zone between the Jackdaw wellhead platform and the new pipeline which was installed in 2024.

The pipeline ploughing, partially finished in 2024 will be fully completed using trenching support vessel. 

 

The pipeline will be flood, cleaned and gauged from the Shearwater 500m zone using either DSV or CSV supported by supply vessels for water transfer.

 

New tie-in spools and associated protection will be installed using DSV in the Shearwater 500m zone between the SSIV and pipeline.

New electro-hydraulic/chemical umbilical will be installed between Jackdaw wellhead Platform and New Jackdaw SSIV using DSV.

Rock dump of the pipeline will be carried out using a rock dump vessel

See detailed map on our bulletin website

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Freespan PL624/625 - Camelot Area Block 53 Southern North Sea



2 x Free Span identified on the Pipeline PL624/625 - 19.17m length x 0.89m height & 13.77m length x 4.11m height


624/625, block 53 SNS. All co-ordinates are based on International Spheroid 1924, European Datum 1950, Universal Transverse Mercator Zone 31N Projection, Central Meridian 3° E.

KP

Easting

Northing

Water Depth

Length

Height

5.303

447263.59

5870188.85

37.74

19.17

0.89

Freespan - Start

5.322

447279.17

5870200.03

38.53

19.17

0.89

Freespan - End

5.426

447363.15

5870260.33

43.11

13.7

4.11

Freespan - Start

5.44

447374.39

5870268.16

37.72

13.7

4.11

Freespan - End

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Transit and Location of HLV Rambiz and Gulliver for the Removal of Installations Hewett 48/29B & C



Transit and final location of Heavy Lift Vessels (HLV) Scaldis Rambiz & Gulliver. Scaldis will commence the removal of the decommissioned installations the Hewett 48/29B and 48/29C in April 2024. There will be HLVs located at the 48/29B and 48/29C completing the removal of the installation's topsides and jackets and will be transiting from the port of Flushing to the location on the 13th of April. The HLV is expected to be on location at the 48/29B on the 13th of April as per the schedule below.


The schedule below provides an overview of the planned works for HLV Rambiz, HLV Gulliver and their supporting vessels for the removal of the 48/29B and 48/29C platforms This schedule does not include possible weather delays.

 

 

 

Mobilisation to Field 48/29B                       13/04/2025

Interim Demob                                            23/04/2025

Mobilisation to Field 48/29C HLV Ramiz    01/05/2025

Modules transporting to Sagro                   27/05/2025

Preparations  48/29C                                 17/06/2025

Transit to 48/29B                                        21/06/2025

Modules 1 shipping to Sagro                      28/06/2025

Modules 2 shipping to Sagro                      13/07/2025

Transit back to field                                     17/07/2025

48/29 C  Topside Removal HLV Gulliver     06/08/2025

Topside shipping to Sagro                           08/08/2025

Transit back to field 48/29B                        11/08/2025

Topside shipping to Sagro                          17/08/2025

Transit back to field 48/29B                        19/08/2025

48/29B Jacket shipping to Sagro                27/08/2025

Interim Demob                                            29/08/2025

Transit back to field 48/29C                        01/09/2025

48/29C Jacket shipping to Sagro                08/09/2025

Contingency Stub Removal                        12/09/2025

Leg Stubs shipping to Sagro                      16/09/2025

See detailed map on our bulletin website

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2025 DSV Decommissioning - B-Block



The DSV Boka Da Vinci will be completing decommissioning activities at B-Block. The vessel will be at B-Block from the 13th May for ~ 40 days. The vessel will be at Solan from the 24th April for ~ 20 days then will return once the B-Block scope is completed on the 19th June for 50 days.


The DSV Boka Da Vinci is due to mobilise in Aberdeen on 24th April to undertake a 110 day offshore campaign to execute the Decommissioning scopes at Solan and B Block within the Central North Sea. The vessel will be working at Solan and B-Block 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Aberdeen. During port calls for Solan, the vessel will utilise Lerwick, Shetland.

See detailed map on our bulletin website

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2025 DSV Decommissioning - Solan



The DSV Boka Da Vinci will be completing decommissioning activities at Solan. The vessel will be at B-Block from the 13th May for ~ 40 days. The vessel will be at Solan from the 24th April for ~ 20 days then will return once the B-Block scope is completed on the 19th June for 50 days.


The DSV Boka Da Vinci is due to mobilise in Aberdeen on 24th April to undertake a 110 day offshore campaign to execute the Decommissioning scopes at Solan and B Block within the Central North Sea. The vessel will be working at Solan and B-Block 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Aberdeen. During port calls for Solan, the vessel will utilise Lerwick, Shetland.

See detailed map on our bulletin website

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Gas Export Pipeline - Rosebank Development



Multiple vessels will be carrying out ROV survey, boulder clearance, pipelay, trenching and pipe burying operations along the Rosebank Development pipeline route between the charted Rosebank Development Area and the WOSPS Tie-in Safety Zone. Other vessels are requested to keep safe distance.


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Weather Buoy Installation – Rosebank Offshore Development Area



A tethered meteorological weather buoy will be installed at the given coordinates. Vessels are requested to keep safe distance.


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Marine Installation Operations – Rosebank Development Area



Multiple vessels will be carrying out pipeline and subsea structure installation activities within the charted Rosebank Development Area. Other vessels are requested to keep safe distance.


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Metocean Buoy - Victory Development



Metocean buoy installed at the Victory development area. Buoy is floating on surface with mooring consisting of steel ballast. Note that buoy can move up to 150 m around deployment location. Deployment vessel: MS Elisabeth Duration: 6 months


Markers:

Metocean buoy

Character: Fl (5) Y 20s

Color: Yellow disc

Mooring: 3000 kg steel ballast with chain

Buoy diameter: 3 m

AIS base station address: 1328842/1/Shell Victory Wave Buoy WS154

 

 

 

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PL24 Cut-point Freespan - North Sea



The cut-point of PL24 is exposed and is protruding significantly from the seabed; approximately 18m long and 6m high. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.


The cut-point of PL24 is exposed and is protruding significantly from the seabed; approximately 6m from the seabed at its highest point and overhanging approximately 18m long from where the line makes contact with the seabed again. This creates an increased risk of snagging of trawling equipment, or similar, compared to a regular freespan.

See detailed map on our bulletin website

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V120 at Judy Riser Platform



Harbour Energy are performing a drilling campaign using the V120 Jack-Up drilling at the Judy Riser Platform location in block 30/07a. The Judy installations have a dedicated Emergency Response and Rescue Vessel (ERRV) on location monitoring the surrounding area.


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Offshore Development Area - Victory Development



The Victory Project consists of the development of the Victory Subsea gas field as a single well tie-back to the Shetland Gas Plant. An Offshore Development Area has been put in place during the construction phase based upon the planned location of the Victory PLEM (North) between May 2024 and September 2025.  The offshore development area for Victory Project was granted on the 20th March 2024. (see Schematic drawing att.)


UKCS Block ID: 206/4a, 206/5c and 207/1a

Water Depths refer to Lowest Astronomical Tide (LAT) with all depths quoted in metres – 126m – 296m

No visible marker (marker buoys) will be deployed.

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Valaris V121 over Shearwater Alpha



Valaris V121 MODU jack-up rig will be situated over Shearwater Alpha platform. Valaris V121 MODU will be on location at Shearwater until June 2026.


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