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.

  1. 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).
  2. The diving operations will be carried out by vessel ‘Skalmey’ on behalf of NRW and she will have restricted ability to manoeuvre during operations.
  3. 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.
  4. 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.
  5. Admiralty Charts 3274, 3273 refer.
  6. This Notice to Mariners will self-cancel at 23:59 on 11th June 2026. 

Diving Area 

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