Activity
Renewables
Offshore Construction - Dogger Bank C Offshore Wind Farm
30 December 2025 12:29:30
Offshore Construction of the Dogger Bank C Offshore Wind Farm commenced on the 5th of October 2024. The development of the windfarm is made up of several elements - current ongoing elements are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.
Hazard
Renewables
Accidental Deposit of an Object at Sea - Seabed Frame
30 December 2025 12:23:47
Seabed Frame unable to be recovered from deployed location - risk of snagging, alert to all marine users.
Activity
Renewables
Recovery of an Object at Sea - Seabed Frame
30 December 2025 12:19:40
Vessel conducting search & retrieval activities to find & remove the Seabed Frame. This will involve a search area around the last known location. We request marine users to remain 500m away from all assets.
Activity
Renewables
Offshore Construction - Dogger Bank A Offshore Wind Farm
29 December 2025 22:16:45
Offshore Construction of the Dogger Bank A Offshore Wind Farm commenced on the 18th of March 2022. The development of the windfarm is made up of several elements - current ongoing elements are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.
Activity
Renewables
Offshore Construction - Dogger Bank B Offshore Wind Farm
29 December 2025 22:15:53
Offshore Construction of the Dogger Bank B Offshore Wind Farm commenced on the 21st of April 2023 with the installation of the OSP jacket foundation. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project. The intention is to give an overview of activities and vessels involved. Should anyone have questions regarding the operations, we kindly ask you to put them forward well in advance.
Hazard
Subsea cables
Cable Exposures - HVDC cable in the Thames Estuary
29 December 2025 13:44:35
Recent surveys have discovered 2 exposures on an HVDC cable in the Thames Estuary.
Activity
Renewables
Windea Clausius (OFCS Platform Commissioning Service Operation Vessel) - East Anglia THREE Windfarm
29 December 2025 13:43:03
Please be advised that the Commissioning Service Operation Vessel (CSOV) ‘WINDEA Clausius’ is expected to mobilise from the port of Emden circa the 24/11/2025. Earliest arrival at East Anglia THREE site circa 25/11/2025, The main working area is within the East Anglia THREE Offshore Windfarm area set out in section 2.1 of the attached document.
Activity
Renewables
Export Cable Guard Vessel Deployment - East Anglia THREE Offshore Export Cable Corridor
26 December 2025 10:38:15
Please be advised that NKT will be deploying Guard Vessels along the East Anglia THREE Offshore Export Cable Corridor as detailed in Section 2.2 of the attached document for protection of the pre lay matrasses and to protect the cable bundle from the start of cable lay until the cable is adequately protected by means of trenching or rock placement.
Activity
Subsea cables
Geophysical Survey Operations - Eastern Green Link 5 Project
24 December 2025 20:05:58
Mariners are advised that a geophysical survey is planned for the Eastern Green Link 5 (EGL 5) project. The marine survey activities for EGL 5 are planned to commence on the 12th of January 2026 and are expected to complete approximately end of February 2026.
Activity
Non specific
Cefas Endeavour CEND022026 Equipment Trial - North Sea
24 December 2025 11:56:54
RV Cefas Endeavour trial survey for camera equipment, survey equipment and staff training
Activity
Oil and gas
NEP Endurance Area - Passive Acoustic Monitoring (PAM) Service - BB Ocean
24 December 2025 11:05:41
Mariners are hereby advised that the Northern Endurance Partnership (NEP) is continuing to undertake an Offshore Passive Acoustic Monitoring (PAM) Survey within the Southern North Sea. This survey deployed of a series of PAM moorings to support ongoing environmental monitoring activities.
Activity
Oil and gas
Armada Kraken FPSO Navigational Aid Upgrade
24 December 2025 11:04:41
The Armada Kraken lighting and fog horn navigational aids will be upgraded between 12/02/2026 - 05/03/2026. During the works, there will be periods of partial or full navigational aid lighting and fog horn outages.
Activity
Renewables
Marine Mammal Monitoring - Passive Acoustic Monitoring Stations (Servicing, Deployment And Recovery)
24 December 2025 11:00:38
Please be advised that Seiche Limited will perform a Service on 12 Passive Acoustic Monitoring (PAM) Stations that have been deployed on the seabed in and at locations around the East Anglia THREE Offshore Windfarm Area, Seiche will additionally recover 5 Passive Acoustic Monitoring Stations Works are due to commence circa 13/01/2026 weather dependant. Seiche will utilise the vessel ‘BB Ocean’ for servicing and recovery works.
Activity
Oil and gas
Shelf Drilling Fortress - move to Invergordon
23 December 2025 15:06:56
Shelf Drilling Fortress - move from Teal West location to Invergordon
Activity
Non specific
Anglian Water Data Collection Buoy off of Lincolnshire and Norfolk coastlines
23 December 2025 15:04:01
A water quality sampling buoy was deployed off of Mablethorpe at Lincolnshire in August, 2025. The buoy will be deployed, serviced, and moved by the vessel 'AMS Spirit.'
Activity
Non specific
Cable Operations - Celtic Interconnector
23 December 2025 14:55:08
As part of the cable installation works for the Celtic Interconnector Project, protection works are being carried out along the entirety of the cable route.
Activity
Oil and gas
Rig - Swift 10
23 December 2025 13:48:29
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.
Activity
Oil and gas
Rig - Deepsea Atlantic
23 December 2025 13:46:45
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.
Activity
Oil and gas
Rig - Prospector 1
23 December 2025 13:45:38
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.
Activity
Renewables
Inter Array Cable Installation - East Anglia THREE Offshore Windfarm
23 December 2025 12:32:05
Mariners are advised that circa the 12/01/2026 cable laying activities will be carried out by CLV Seaway Aimery within the East Anglia THREE Offshore Windfarm, the vessel will be laying inter array cables between WTGs and the East Anglia THREE Offshore converter station (OFCS).
