Activity
Oil and gas
Culzean Field - Seismic Survey
30 July 2026 14:34:33
Seismic OBN survey in and around the Culzean field.
Activity
Oil and gas
4D Seismic acquisition - Mariner
30 July 2026 12:51:35
EQUINOR on behalf of ADURA are planning to acquire another 4D survey at the Mariner field (P335, P726, P979, P2151, covering blocks 8/15, 9/11 & 9/12) during July 2026. • Vessel name : Amazon Conqueror (Streamer vessel), SW Gallien (source vessel for undershoot), Shemarah II (escort vessel), Ocean Dee (supply vessel) • Location and purpose : Mariner field, UKCS Block 8/15, 9/11 & 9/12 , 4D seismic acquisition + undershoot.
Hazard
Oil and gas
NEP Confirmed Unexploded Ordnance Disposal No.2
30 July 2026 12:50:14
Mariners are advised that the Northern Endurance Partnership (NEP) previously reported a Confirmed Unexploded Ordnance (CUXO) located within NEP Block 5 on 16h March 2026 while carrying out a UXO identification survey using the Olympic Taurus. The cUXO has been successfully disposed and rendered safe by low order deflagration. As a result, the hazard associated with NtM029v01 no longer exists, and the hazard warning may be cancelled.
Hazard
Oil and gas
NEP Confirmed Unexploded Ordnance Disposal No. 1 - Block 3
30 July 2026 12:48:49
Mariners are advised that the Northern Endurance Partnership (NEP) previously reported a Confirmed Unexploded Ordnance (CUXO) located within NEP Block 3 on 5th March 2026 while carrying out a UXO identification survey using the Olympic Taurus. The cUXO has been successfully disposed and rendered safe by low order deflagration As a result, the hazard associated with NtM027v01 no longer exists, and the hazard warning may be cancelled.
Hazard
Renewables
Moray West - Awareness of incorrect AtoN light characteristic
30 July 2026 12:46:14
This is to advise mariners that one of the Moray West Aids to Navigation (AtoN) is currently exhibiting an incorrect light characteristic. AtoN MW-D09 is presently displaying a yellow flash every 2 seconds, whereas the published characteristic is a yellow flash every 5 seconds.
Activity
Non specific
Dungeness B Decommissioning - Geophysical Survey
29 July 2026 16:17:09
Please be advised that from 11th August until 31st August 2026 Ocean Ecology Ltd (OEL) will be undertaking multibeam echo sounder (MBES) survey in support of the Dungeness B Decommissioning Project Environmental Impact Assessment (EIA).
Activity
Non specific
Celtic Interconnector - Cable Operations
29 July 2026 14:25:42
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.
Hazard
Oil and gas
NEP Confirmed Unexploded Ordnance No.3
29 July 2026 14:22:57
Mariners are advised that following UXO identification survey the Glomar Wave has identified a second confirmed UXO within NEP Pipeline Construction Area Block 5. Further investigations are being conducted and updated will follow.
Activity
Oil and gas
Alba - Southern Area Development Injection Equipment Disconnect
29 July 2026 14:07:01
As part of the Alba field decommissioning vessels will be in field to flush and disconnect the Alba xtreme south (AXS) and the Southern Area Development Injection Equipment (SADIE).
Activity
Oil and gas
Alba AXS Flush and Disconnect
29 July 2026 14:04:02
As part of the Alba field decommissioning vessels will be in field to flush and disconnect the Alba xtreme south (AXS) and the Southern Area Development Injection Equipment (SADIE).
Activity
Oil and gas
Leman Southwest - Subsea Decommissioning
29 July 2026 13:58:09
The HAEVA Jack-Up Barge (JUB) will facilitate decommissioning activity at the Leman South field. The Leman Southwest subsea well will be plug and abandoned (P&A) and the Wellhead Protective Structure (WHPS) will be removed.
Activity
Oil and gas
Durango - Subsea Decommissioning
29 July 2026 13:48:54
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.
Activity
Non specific
Bran Sands - ADCP Deployment - EGS Echo
29 July 2026 13:30:24
Mariners are advised that Northumbrian Water Ltd will be deploying Acoustic Doppler Current Profilers (ADCP) within the Bran Sands survey area (see Figure 1 and Table 1 attached), these surveys are in support of the Bran Sands Long Sea Outfall (LSO) Project.
Activity
Oil and gas
Wenlock - Decommissioning
29 July 2026 13:27:17
The OBANA Heavy Lift Vessel will undertake topside and jacket removal activities at the Wenlock installation.
Activity
Oil and gas
Kilmar - Decommissioning
29 July 2026 12:55:01
The OBANA Heavy Lift Vessel will be located alongside the Kilmar installation to facilitate the removal of the Kilmar topside and jacket structures.
Activity
Oil and gas
Garrow - Decommissioning
29 July 2026 12:48:24
The OBANA Heavy Lift Vessel (HLV) will be located alongside the Garrow installation to facilitate the removal of the Garrow topside and jacket structures.
Activity
Oil and gas
Dana Triton Area - Diving Operations
29 July 2026 12:26:07
Dana Petroleum will have the DSV Seven Kestrel in the Triton area for diving operations at the Triton FPSO and other diving operations in the Triton area.
Activity
Non specific
Irish Sea - Sediment sampling and seabed lander deployments
29 July 2026 12:16:14
The RRS Discovery will be conducting sediment sampling with box core, multicore and SPI camera, and sampling the water column behind a chartered fishing vessel in 4 sites during July and August. An instrumented seabed lander will also be deployed at each of the 4 sites for up to 5 days. These sites are fishing grounds and close to some navigation routes. The RRS Discovery will have restricted manoeuvrability during these operations.
Hazard
Oil and gas
NEP Confirmed Unexploded Ordnance No.10
29 July 2026 12:12:02
Mariners are advised that the Northern Endurance Partnership (NEP) has identified a tenth confirmed Unexploded Ordnance this is on the boundary of the extended NEP Pipeline Construction Area Block 5
Activity
Oil and gas
Liverpool Bay CCS - Dredge Support Surveys
28 July 2026 17:12:57
Mariners are advised that Liverpool Bay CCS Ltd will conducting dredge support survey activities using the NRH Cormorant and the Elysse. The Elysse is estimated to mobilise on site during the 10th August 2026
