No. 3 of 2026: Dee Estuary Mostyn Deep / Mostyn Channel - Survey / Sample Work

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

Mariners are advised that the Environment Agency, 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: 11 May - 31 May 2026
Planned Survey Date: 12 May 2026
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 Thames Guardian
MMSI: 23589286
Callsign: 2EYX7 VHF
Channel: 16

Contacts:

Skipper (Briggs Marine): Albert Atkinson – thamesguardian@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 2026.

Captain R Jackson
Harbour Master
20 Ebrill 2026
d/o Strategic Marine Services Ltd.
12 Chapel Court, Wervin Road, Wervin, Caer. CH2 4BP
Ffôn: +44 (0) 1244 371428
E-bost: harbourmaster@deeconservancy.org