Survey vessel ‘PRINCE MADOG’ continues conducting geophysical nearshore multibeam surveys at Turbot Bank and Gowan Shoals from 22nd September 2025 to 26th September 2025.

  1. MARINERS ARE HEREBY ADVISED that, nearshore multibeam geophysical surveys will continue to be undertaken in the areas of Turbot Bank and Gowan Shoals, from 22nd September to 26th September 2025. (See attached images with marked operational areas).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Operational Area                                                                                 A map of the sea AI-generated content may be incorrect.                                                                                                                                                                                                                                                                                                                                                                                                 Turbot Bank Operational Area                                                                                  A map of a sea AI-generated content may be incorrect.
  2. The surveys will be carried out by Bangor University’s 35m research vessel ‘PRINCE MADOG’ on behalf of NRW (Natural Resources Wales), which may have restricted ability to manoeuvre during the operations.
  3. The vessel will exhibit the prescribed shapes and lights in accordance with the International Regulations for the Prevention of Collisions at Sea and will maintain a listening watch on VHF Channel 12.
  4. The Master of the survey vessel will remain in contact with Milford Haven VTS and will keep clear of the Port’s approach channels when requested, to allow safe passage of inbound/outbound vessels. 
  5. Mariners are requested to pass at a safe speed, maintain a safe distance of at least 200 metres from the vessel, and navigate with caution when operating in the area. 
  6. Admiralty Charts 3274, 3273 refer.
  7. This Notice to Mariners will self-cancel at 23:59 on 26th September 2025.