North Wales Cruising Club

Conwy Notice to Mariners 08/2026
The information below is an update to the local notice to mariners 06/2026 (https://nwcc.info/conwy-notice-to-mariners-06-2026/) issued on the
12/05/2026.

All mariners are advised ...

Conwy Notice to Mariners 08/2026 - North Wales Cruising Club The information below is an update to the local notice to mariners 06/2026 issued on the12/05/2026. 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....

Conwy Notice to Mariners 07/2026
All mariners are advised that the vessel Vanguard II is presently lying on the shore at ...

Conwy Notice to Mariners 07/2026 - North Wales Cruising Club All mariners are advised that the vessel Vanguard II is presently lying on the shore at the Great Orme, latitude 53° 19.9’ north, longitude 3° 52.5’ west. As of 0930 this morning, it was still afloat with one engine running. The vessel represents at potential navigational hazard should it floa...

Caernarfon Notice to Mariners 31/05/26
Open Water Swimming Event.

Sunday, 31st May, 2026.

An Open Water Swimming Event will commence at 10:40am from Menai Slipway and end at Y Felinheli – ETA 12:40pm . Swimmers will be keeping to the Anglesey side and will cross over at Plas Newydd – ETA 12:10pm . They will be accompanied by safety kayakers and powerboats.

Please exercise caution when navigating in the vicinity of the event.

Jennifer Jones
Harbwr Feistr Cynorthwyol Caernarfon Assistant Harbour Master
Ymddiriedolaeth Harbwr Caernarfon Harbour Trust

Caernarfon Notice to Mariners 31/05/26 - North Wales Cruising Club Open Water Swimming Event. Sunday, 31st May, 2026. An Open Water Swimming Event will commence at 10:40am from Menai Slipway and end at Y Felinheli – ETA 12:40pm . Swimmers will be keeping to the Anglesey side and will cross over at Plas Newydd – ETA 12:10pm . They will be accompanied by safety k...

Caernarfon Notice to Mariners 04/2026
Mariners are advised of the current positions of the Aids to Navigation listed below.

CAERNARFON HARBOUR TRUST FLOATING AtoN POSITIONS DEPTH IN CHANNEL

Aid to NavigationApproximate Depth

(5 metres off correct side of AtoN, adjusted to CD).
WARNING: Depth will be affected by wind, atmospheric pressure and sea state.LatitudeLongitude LightLLANDDWYN ISLAND
SW ROCK BUOY
S CARDINAL 10.1m53ᵒ 07’.81 N004ᵒ25’.05 WUnlitLLANDDWYN ISLAND
NE ROCK BUOY
S CARDINAL2.67m53ᵒ 08’.04 N004ᵒ24’.47 WUnlitSAFE WATER MARK7.58m53ᵒ 06’.95N004ᵒ25'.14 WL Fl.10sC 1 STARBOARD 5.01m53ᵒ 07’.00 N004ᵒ24’.69 WFl.G.5sC 2 PORT0.51m53ᵒ 07’.19N004ᵒ24’.32 WFl.R.10sC 3 STARBOARD1.99m53ᵒ 07’.23 N004ᵒ 23’.88 WQ.GC 4 PORT2.43m53ᵒ 07’.12 N004ᵒ22’.74 WQ.RGRAMPIAN CASTLE
S CARDINAL1.33m53ᵒ 07’.26 N004ᵒ 22’.96 WVQ(6)+LFl.10sC 5 STARBOARD1.46m53ᵒ 07’.28 N004ᵒ23’.21 WFl.G(2).5sC 6 PORT2.78m53ᵒ 07’.16 N004ᵒ21’.97 WFl.R.5sMUSSEL BANK PERCH3.94m53ᵒ 07’.32 N004ᵒ20’.92 WFl.R(2).5sC 8 PORT1.78m53ᵒ 07’.63N004ᵒ19’.43 WFl.R.3sC 10 PORT2.48m53ᵒ 07’.95 N004ᵒ18’.20 WQ.RC 7 STARBOARD3.08m53ᵒ 08’.14 N004ᵒ17’.99 WQ.GC 12 PORT2.54m53ᵒ 08’.49 N004ᵒ17’.37 WFl(2)R.10sC 9 STARBOARD3.38m53ᵒ 08’.56 N004ᵒ16’.89 WFl.G.2sCHANGE BUOY
S CARDINAL3.95m53ᵒ 08’.80 N004ᵒ16’.74 WVQ(6)+LFl.10sSEIONT RIVER
BIFURCATION-1.06m53ᵒ 08’.54 N004ᵒ16’.82 WUnlitTRAETH GWYLLT
STARBOARD3.92m53ᵒ 09’.27 N004ᵒ16’.09 WFl(2)G.10sC 13 STARBOARD1.66m53ᵒ 09’.53 N004ᵒ15’.89 WFl(4)G.10sC 11 STARBOARD2.26m53ᵒ 09’.88 N004ᵒ15’.63 WFl(2)G.5sC 14 PORT4.81m53ᵒ 10’.18 N004ᵒ15’.53 WFl.R.5sC TEMP PORT4.97m53ᵒ 10’.53 N004ᵒ14’.67 WFL(2)R.5sC 9 STARBOARD
PORT DINORWIC2.76m53ᵒ 10'.63N004ᵒ13’.82WFL(3)G.10s

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Ymddiriedolaeth Harbwr Caernarfon Harbour Trust

Caernarfon Notice to Mariners 04/2026 - North Wales Cruising Club Mariners are advised of the current positions of the Aids to Navigation listed below. CAERNARFON HARBOUR TRUST FLOATING AtoN POSITIONS DEPTH IN CHANNEL Aid to Navigation Approximate Depth (5 metres off correct side of AtoN, adjusted to CD). WARNING: Depth will be affected by wind, atmospheric pressu...

Caernarfon Notice to Mariners – Benthic Survey 3
The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) from the vessel Severn Guardian.

Caernarfon Notice to Mariners - Benthic Survey 3 - North Wales Cruising Club The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) from the vessel Severn Guardian. Survey Details Survey Period: 20/05/2026 – 31/06/2026Survey duration: 1 dayTime on station: 15-60 minsSurvey Vessel: Severn GuardianSkipper: Mar...

Caernarfon Notice to Mariners 03/2026
Bar Caernarfon Bar

Caernarfon Notice to Mariners 03/2026 - North Wales Cruising Club Bar Caernarfon Bar Aid to navigation Fairway Buoy L FL10s is now on station. 53° 06’.95 N 004°25’.14 W David John O’NeillHarbwr Feistr Caernarfon Harbour Master

Conwy Notice to Mariners 06/2026
All mariners are advised that The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey ...

Conwy Notice to Mariners 06/2026 - North Wales Cruising Club All mariners are advised that The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) between 1st June – 31st June 2026 in Conwy Bay and Red Wharf Bay from the vessel Severn Guardian. Marine licence RML 2503, maps and locations all a...

Conwy Notice to Mariners – Cultch deployment
Notice of ...

Conwy Notice to Mariners - Cultch deployment - North Wales Cruising Club Notice of Exempted Activities for scientific instrumentsConnecting Conwy research project – Scientific monitoring An underwater video survey will take place on 01 April 2026 (weather dependent) within the licensed area of licence Ref: DEML2284. A copy of the location and coordinates are below. The...

Caernarfon Notice to Mariners – Benthic Survey 2
The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific ...

Caernarfon Notice to Mariners - Benthic Survey 2 - North Wales Cruising Club The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) from the vessel Severn Guardian. Survey Details Survey Period: 07/04/2026 – 23/04/2026Survey duration: 1 dayTime on station: 15-60 minsSurvey Vessel: Severn GuardianSkipper: Mar...

Caernarfon Notice to Mariners – Benthic Survey
The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey...

Caernarfon Notice to Mariners - Benthic Survey - North Wales Cruising Club The Environment Agency/Briggs Marine are scheduled to undertake a small scale scientific survey (sediment grab sampling) in the Caernarfon Bay area from the vessel Severn Guardian. Survey Details Survey Period: 07/04/2026 – 23/04/2026Survey duration: 2 daysTime on station: 15-60 minsSurvey Vessel:...