Conwy Notice to Mariners 10/2025
All mariners are advised that Local Notice to Mariners No 9 is hereby cancelled.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Category: Sailing
Conwy Notice to Mariners 09/2025
All mariners are advised that passage through Conwy Bridge is temporarily unavailable due to a vessel lodged underneath it by its mast.
All mariners are advised to keep clear until we issue a notice to mariners that the area is clear.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Caernarfon Notice to Mariners 12/2025
Aid to navigation Starboard C11 Fl(2)G.5s is now demonstrating its appropriate day shape and is exhibiting its appropriate light characteristics.
53° 09’.88 N 004°15’.64 W
Mariners are advised that this notice herby cancels Notice 10/25
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Conwy Notice to Mariners 08/2025
Update to Local Notice to Mariners No 7
All mariners are advised that the sunken yacht is now buoyed with two orange buoys.
Co-ordinates 53°17.43N 003°49.76W
All mariners are advised to exercise extreme caution in this area.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Caernarfon Notice to Mariners 11/2025
A new Fixed South Cardinal 10s (Grampian Castle) has been affixed to the wreck of the “Grampian castle”.
53° 07’.30 N 04° 22’. 99 W
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 10/2025
Aid to navigation Starboard C11 Fl(2)G.5s is not demonstrating its appropriate day shape and is not exhibiting its appropriate light characteristics
53° 09’.88 N 004° 15’.64 W
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Conwy Notice to Mariners 07/2025
All mariners are advised that there is a sunken yacht on a mooring adjacent to Deganwy Marina entrance.
Co-ordinates 53°17.43N 003°49.76W
All mariners are advised to exercise extreme caution in this area.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Caernarfon Notice to Mariners 09/2025
Mariners are advised that this notice herby cancels Notice 08/2025.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 08/2025
Y Fenai – Siart 1464 – Menai Strait – Chart 1464
Two mooring buoys will be situated surrounding Swelly Rock from 13:00 on the 21/3/25 until a cancellation Notice to Mariners is issued. These are to allow access for routine repairs works to the AtoN. The moorings are not suitable for use and Mariners are prohibited from making use of the moorings.
Mariners are advised to navigate with caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 07/2025
Y Fenai – Siart 1464 – Menai Strait – Chart 1464
Mariners are advised that the vessel Seven Guardian will be undertaking a small-scale scientific survey (grab sampling) between the dates below in the Caernarfon Bay Area including the approaches to Caernarfon. Sampling will take
approximately 2 days and will involve lowering and retrieving a small sediment grab sampler at locations across the bay from Porthdinllean to around the Caernarfon Bar.
Survey work: Caernarfon Bay benthic survey
Survey Period: 31/03/2025 – 18/04/2025
Survey duration: 2 days
Time on station: 15-60 mins
Sample locations: attached
Survey Vessel: Severn Guardian
This Notice is only valid for the above dates.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master