No. 4 of 2025: Dee Estuary Mostyn Deep / Mostyn Channel - Survey / Sample Work

Dee Estuary Mostyn Deep / Mostyn Channel - Survey / Sample Work

Mariners are advised that NRW, in collaboration with Briggs Marine, is scheduled to conduct a small-scale scientific survey involving sediment grab sampling in the Dee Estuary at Mostyn Deep. The operation will be carried out from the vessel CSV Severn Guardian and is expected to last a maximum of 1.5 hours.

Survey Details:

Date Window: 5th May – 31st May 2025
Planned Survey Date: 19th May 2025
Duration: 1 day
Activity: 10 seabed grab samples (Day Grab) collected at a single site
Location: 53°20'13.31"N, 003°16'31.25"W (WGS84)
Vessel: CSV Severn Guardian
MMSI: 235091052 Callsign: 2FGL5 VHF Channel: 16

Contacts:

Skipper (Briggs Marine): Mark Williams – MVSevernGuardian@briggsmarine.co.uk 
Survey Officer (Environment Agency): Richard Pritchard – richard.pritchard@environment-agency.gov.uk 

Mariners are requested to navigate with caution in the vicinity during the survey operations.

This notice will self-cancel on 1 June 2025.

Captain R Jackson
Harbour Master
25 April 2025

c/o Strategic Marine Services Ltd
12 Chapel Court 
Wervin Road 
Wervin 
Chester 
CH2 4BP 

Telephone : +44 (0) 1244 371428 
Email : harbourmaster@deeconservancy.org