Hazard
Renewables
Accidental Deposit of an Object at Sea - Seabed Frame
31 October 2025 16:22:07
Seabed Frame unable to be recovered from deployed location - risk of snagging, alert to all marine users.
Hazard
Renewables
Dropped Object - Morgan Array
31 October 2025 16:18:11
Please be advised that the vessel Ocean Observer has dropped equipment on the seabed which it is currently unable to recover during geotechnical survey operations within the Morgan Array Area.
Activity
Non specific
Anglian Water Sea Water Sampling Campaign
31 October 2025 16:16:06
Atkins-Realis, on behalf of Anglian Water, is coordinating seawater sampling surveys off the Lincolnshire and Norfolk coastlines, having commenced on 13/10/2025. This is the third of four sampling campaigns scheduled to take place in 2025/2026. Sampling efforts are due to be completed by 23/11/2025, subject to weather.
Activity
Subsea cables
Southern Electric Power Distribution ED2 SEPD Submarine Cables Inspection Poole West Quay Marina
31 October 2025 16:15:05
Please be advised that Spectrum (on behalf of SEPD) will be undertaking a Geophysical Survey across a submarine electricity cable corridor across Hole Bay, Poole Harbour.
Activity
Subsea cables
Southern Electric Power Distribution - ED2 SEPD Submarine Cables Inspection Poole Round Island
31 October 2025 16:13:32
Please be advised that Spectrum (on behalf of SEPD) will be undertaking a Geophysical Survey across a submarine electricity cable corridor in Poole Harbour.
Activity
Subsea cables
Southern Electric Power Distribution (SEPD) ED2 SEPD Submarine Cables Inspection Poole Furzey Island
31 October 2025 16:08:24
Please be advised that Spectrum (on behalf of SEPD) will be undertaking a Geophysical Survey across a submarine electricity cable corridor across the Poole Harbour.
Activity
Renewables
Geotechnical Survey Campaign - Berwick Bank Offshore Wind Farm
31 October 2025 16:04:16
Mariners are advised that SSE Renewables will be returning to Berwick Bank Wind Farm area to continue Geotechnical survey work. The survey will be within the proposed Berwick Bank Wind Farm site boundary and Export Cable Route areas.
Activity
Subsea cables
Geophysical Survey - Western Link 2 Offshore
31 October 2025 16:02:47
Mariners are advised that Fugro, on behalf of Western Link 2 (WL2), will be undertaking survey work in the water depths greater than 50 m in the survey corridor, from the the Firth of Clyde at the northern end, through the North Channel, and into the Irish Sea at the southern end. Scottish Power Energy Networks and National Grid Electricity Transmission Plc are delivering the WL2 Subsea cable Project. WL2 will play a vital role in achieving UK, Welsh and Scottish Governments’ net zero targets.
Activity
Oil and gas
Jackdaw Development - North Sea
31 October 2025 16:00:49
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. The export system consists of a subsea pipeline to the Shearwater platform. Vessels for 2025/2026: Deep Arctic or Deep Discoverer, Sleipnir, Seven Kestrel .
Activity
Oil and gas
Decommissioning - Amethyst A2D
31 October 2025 09:20:21
The OBANA Heavy Lift Vessel will undertake jacket removal works at Amethyst A2D. Works will be between 7th November 2025 and 10th December 2025.
Activity
Renewables
Export Cable Joint Trenching - Inch Cape export cable corridor
31 October 2025 09:18:22
All mariners and stakeholders are advised that export cable joint trenching activities will commence within the Inch Cape export cable corridor.
Activity
Renewables
Geophysical Survey - East Irish Sea Transmission Project
31 October 2025 09:16:26
Mariners are advised that Orsted East Irish Sea Transmission Limited (hereafter ‘East Irish Sea Transmission Project) will be commencing a scope of geophysical survey works in August 2025, mobilising on or after 1st August and the survey will take approximately 2 months to inform route planning and site selection of the East Irish Sea Transmission Project.
Activity
Renewables
Demarcation Buoyage Unlit - Inch Cape
30 October 2025 16:35:15
The Inch Cape site demarcation buoyage noted below is unlit. Locations and coordinates are shown in the attached notice to mariners. • North Cardinal demarcation buoy unlit. • South Cardinal 1 demarcation buoy unlit. • South Cardinal 2 demarcation buoy unlit. • Special Mark 6 demarcation buoy unlit.
Activity
Renewables
Inch Cape Offshore Sub Station Platform - Rig Move
30 October 2025 16:29:16
All mariners and stakeholders are advised that the Jack Up rig, Noble Resilient will depart the Inch Cape site.
Hazard
Renewables
Debri following Collision - Unmanned Survey Vessel
30 October 2025 16:26:29
Unmanned survey vessel debri following collision
Hazard
Renewables
UXO - Greater Gabbard windfarm
30 October 2025 15:49:49
A UXO was found and is currently sitting in position 51'57.924'N 001'56.122'E as per NTM. This is inside the Greater Gabbard windfarm - we have no plans to remove/ move/ detonate. This has been surveyed and the risk of detonation is low however we would advise a 500m Exclusion zone
Activity
Non specific
Scientific Deployment of Autonomous Underwater Vehicles - East of Aberdeen
30 October 2025 15:46:02
Two [2] Autonomous Underwater Vehicles [AUVs] will be undertaking missions coordinated through the National Oceanography Centre [NOC]. The Autonomous Underwater Vehicles will be deployed East of Aberdeen and transit to the marked work areas, where the gliders will aim to remain for the duration of the deployment.
Hazard
Fishing restrictions
Potentially hazardous object - Frigg Area
30 October 2025 15:28:23
Potential snagging hazard identified
Hazard
Non specific
Potentially hazardous unknown objects (x3) - Frigg Area
30 October 2025 15:24:22
As part of an "as found" survey, 3 x potentially hazardous unknown objects have been identified on the seabed in the Frigg area.
Hazard
Renewables
Cable Exposure - Export Cable Route - Sofia Offshore Wind Farm
30 October 2025 10:36:39
Mariners are advised that a subsea survey carried out in July/August 2025 has identified multiple cable exposures along a 120km section the Sofia Export Cable Route. Fishing restrictions therefore continue to apply within the Sofia OWF export cable exclusion boundaries. The guard vessel 'Enterprise II' continues monitoring operations within the Sofia Export Cable Corridor between KP4 & KP90.
