Diving operations by vessel ‘Skalmey’ for a maerl bed survey will take place in the vicinity of South Hook LNG Jetty between 1st June 2026 and 11th June 2026.
- MARINERS ARE HEREBY ADVISED that, diving operations will be carried out in the vicinity of South Hook LNG Jetty at approximately 51.7047°N 005.08163°W, between 1st June and 11th June 2026, weather dependent (see below chartlet showing the operational area).
- The diving operations will be carried out by vessel ‘Skalmey’ on behalf of NRW and she will have restricted ability to manoeuvre during operations.
- The vessel will exhibit Flag ‘A’ in accordance with the International Regulations for the Prevention of Collisions at Sea when divers are in the water and maintain a listening watch on VHF Channel 12, remaining in contact with Milford Haven VTS throughout operations.
- Mariners are requested to pass at a safe speed, maintain a safe distance and navigate with caution when operating in the vicinity of the survey vessel.
- Admiralty Charts 3274, 3273 refer.
- This Notice to Mariners will self-cancel at 23:59 on 11th June 2026.
Diving Area


( For reference only – Not to be used for Navigation )