Geophysical Survey Operation by Vessel ‘Northern Storm’

Geophysical survey operations will be carried out by the vessel ‘Northern Storm’ from 21st May to 10th June 2026.

1. MARINERS ARE HEREBY ADVISED that, geophysical survey operations will take place from 21st May to 10th June 2026 within the Milford Haven Port limits, around the East/West Channel (see below chartlet showing the operational areas). 
2. The surveys will be carried out by the vessel ‘Northern Storm’ on behalf of Greenlink/Njord and may have restricted ability to manoeuvre during operations. 
3. The vessel will exhibit the appropriate shapes and lights in accordance with the International Regulations for the Prevention of Collisions at Sea 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 10th June 2026. 

Operational Area 

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

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