Seagrass monitoring survey and seabed mapping will take place in Dale Bay from 14th–18th September 2025 by RV Gwenhidw and USV Blueboat.
- MARINERS ARE HEREBY ADVISED that diving operations to conduct seagrass surveys and seabed mapping will be undertaken in Dale Bay at position 51°42'17.6"N 005°09'34.9"W from 14th to 18th September 2025 (see below chart with operational area) carried out by ‘Project Seagrass Ltd’.
- Diving operations will be carried out by the vessel ‘’ RV Gwenhidw‘’, with transect lines marked by small orange buoys and USV Blueboat(1m long and remotely operated ) will conduct seabed mapping.
- RV Gwenhidw will display lights and shapes in accordance with COLREGS, Flag A will be displayed whenever divers are in the water. Vessel will remain in contact with Milford Haven VTS and always monitor VHF Ch. 12.
- Mariners are requested to navigate with caution, pass at a safe speed, and maintain a safe distance when operating in the area.
- Admiralty Charts 3274, 3275, IMRAY Y26, and 2600 Atlas refer.
- This Notice to Mariners will self-cancel at 23:59 on 18th Sept 2025.
BY ORDER
M RYAN
HARBOURMASTER
Port of Milford Haven
Gorsewood Drive
Hakin
Milford Haven
Pembrokeshire
SA73 3EP
Tel: 01646 696100
Email: enquiries@mhpa.co.uk