Conwy Notice to Mariners 14/2026
All mariners are advised that Conwy Harbour LNtM No 7 of 2026 is cancelled.
The wreck of the Vanguard II has been recovered.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Author: Austin Goudge
Caernarfon Notice to Mariners – Open Water Swim Event
Open Water Swim Event – Saturday, 18th July, 2026.
An Open Water Swim Event will commence at 13:50 from Menai Slipway and finish at Y Felinheli – ETA 15:50. Swimmers will be keeping to the Anglesey side and will cross over at Plas Newydd – ETA 15.20
They will be accompanied by safety kayakers and powerboats.
Please exercise caution when navigating in the vicinity of the event.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 12/2026
Aid to navigation Starboard “Traeth Gwyllt” Fl(2)G.10s is on its new station.
53° 09.24 N 004°16.06 W
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Conwy Notice to Mariners 12/2026
All mariners are advised that a pontoon and mooring have dragged to the south side of Conwy Bridge. The position is latitude 53° 16.7’ north, longitude 003° 49.1’ west. The pontoon should be passed at minimum distance of 50 metres as a submerged mooring buoy is also present. The pontoon is unlit.
A cancelation notice will be issued when the obstructions are removed.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Caernarfon Notice to Mariners 11/2026
Aid to navigation Starboard No C3 QG is on its appropriate station and is now lit.
53° 07’.23 N 004°23’.88 W
Mariners are advised that this notice herby cancels Notice 09/26
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 10/2026
Aid to navigation Port No C2 Fl.R 10s is on its appropriate station and now lit.
53° 07’.17 N 004°24’.32 W
Mariners are advised that this notice herby cancels Notice 07/26
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 08/2026
Aid to navigation Port No C3 QG is on its appropriate station and currently unlit.
53° 07’.23 N 004°23’.88 W
Mariners are advised to exercise caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 07/2026
Aid to navigation Port No C2 Fl.R 10s is on its appropriate station and currently unlit.
53° 07’.17 N 004°24’.32 W
Mariners are advised to exercise caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Conwy Notice to Mariners 09/2026
The information below is an update to the local notice to mariners 06/2026 and 08/2026
All mariners are advised that The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) .
Date: 1st June – 31st June 2026.
Duration: 2 Days
Activity: Day grabs at 2 locations in Conwy Bay/Estuary and 2 locations in Red Wharf
Bay.
Vessel: CSV Severn Guardian MMSI: 235091052 Callsign: 2FGL5 VHF: Ch. 16
Skipper (Briggs Marine): Mark Wiliams ([email protected])
Survey Officer (Environment Agency) :Richard Pritchard ([email protected])
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
Conwy Notice to Mariners 08/2026
The information below is an update to the local notice to mariners 06/2026 issued on the
12/05/2026.
All mariners are advised that The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) . The surveys are likely to be done between 12th June to 15th June.
Duration : 1 Day
Activity: Day grabs at 2 locations in Conwy Bay/Estuary and 2 locations in Red Wharf Bay.
Vessel: CSV Severn Guardian MMSI: 235091052 Callsign: 2FGL5 VHF: Ch. 16
Skipper (Briggs Marine): Mark Wiliams ([email protected])
Survey Officer (Environment Agency) : Tom Lord ([email protected])
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master