Local Notice to Mariners 2026 – Benthic Survey – Malltraeth
Benthic Survey (Malltraeth) NtoM
20/05/2026 – Bae Caernarfon – Siart 1970 – Caernarfon Bay – Chart 1970
The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) in the Malltraeth area from the vessel Severn Guardian.
Survey Details
Survey Period: 20/05/2026 – 31/06/2026
Survey duration: 1 day
Time on station: 15-60 mins
Survey Vessel: Severn Guardian

