Sailing in Company since 1928
Aid to navigation Starboard “Traeth Gwyllt” Fl(2)G.10s is off station.
53° 09.53 N 004°15.89 W
Mariners are advised to navigate with caution in this area.
Jennifer Jones
Harbwr Feistr Cynorthwyol Caernarfon Assistant Harbour Master
Aid to navigation Port No C8 Fl R 3s is NOT on station.
53° 07’.63 N 004°19’.43 W
Mariners are advised to navigate with caution in this area
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
| Yellow Highlight = | Change of position since last |
| AtoN | Depth 5 Meters off correct side of AtoN e.g 1.5m @ 15:30 | Depth (m) Adjusted to CD | Latitude | Longitude | Light Characteristic |
|---|---|---|---|---|---|
| LLANDDWYN ISLAND SW ROCK BUOY S CARDINAL | 53°07.89’N | 004°25.15’W | Unlit | ||
| LLANDDWYN ISLAND E ROCK BUOY S CARDINAL | 53°08.04’N | 004°24.47’W | Unlit | ||
| SAFE WATER MARK | 15:56 | 7.32 | 53°06.96’N | 004°25.11’W | L Fl.10s |
| C 1 STARBOARD | 15:53 | 5.39 | 53°07.00’N | 004°24.69’W | Fl.G.5s |
| C 2 PORT | 15:49 | 0.65 | 53°07.13’N | 004°24.35’W | Fl.R.10s |
| C 3 STARBOARD | 15:45 | 2.50 | 53°07.23’N | 004°23.88’W | Q.G |
| C 4 PORT | 15:38 | 2.42 | 53°07.12’N | 004°22.74’W | Q.R |
| GRAMPIAN CASTLE SOUTH CARDINAL | 16:44 | 1.38 | 53°07.26’N | 004°22.96’W | VQ(6)+LFl.10s |
| C 5 STARBOARD | 15:41 | 1.54 | 53°07.19’N | 004°23.37’W | Fl.G(2).5s |
| C 6 PORT | 15:36 | 2.50 | 53°07.16’N | 004°21.97’W | Fl.R.5s |
| MUSSEL BANK PERCH | 17:14 | 3.84 | 53°07.32’N | 004°20.92’W | Fl.R(2).5s |
| C 8 PORT | 15:28 | 1.91 | 53°07.63’N | 004°19.43’W | Fl.R.3s |
| C 10 PORT | 15:21 | 3.32 | 53°07.95’N | 004°18.25’W | Q.R |
| C 7 STARBOARD | 15:19 | 2.80 | 53°08.13’N | 004°18.02’W | Q.G |
| C 12 PORT | 15:15 | 2.44 | 53°08.48’N | 004°17.39’W | Fl(2)R.10s |
| C 9 STARBOARD | 15:12 | 3.20 | 53°08.54’N | 004°16.91’W | Fl.G.2s |
| CHANGE BUOY S CARDINAL | 17:40 | 3.51 | 53°08.80’N | 004°16.74’W | VQ(6)+LFl.10s |
| SEIONT RIVER BIFURCATION | 15:08 | -0.56 | 53°08.55’N | 004°16.81’W | Unlit |
| TRAETH GWYLLT STARBOARD | 17:44 | 3.21 | 53°09.27’N | 004°16.09’W | Fl(2)G.10s |
| C 13 STARBOARD | 17:48 | 1.91 | 53°09.53’N | 004°15.89’W | Fl(4)G.10s |
| C 11 STARBOARD | 17:50 | 3.31 | 53°09.88’N | 004°15.63’W | Fl(2)G.5s |
| C 14 PORT | 17:54 | 6.31 | 53°10.23’N | 004°15.41’W | Fl.R.5s |
| C TEMP PORT | 18:00 | 5.00 | 53°10.53’N | 004°14.67’W | Fl(2)R.5s |
| PORT DINORWIC | – | – | 53°10.69’N | 004°13.81’W | Fl(3)G.10s |
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Ymddiriedolaeth Harbwr Caernarfon Harbour Trust
Mariners are advised that Bangor University’s School of Ocean Sciences are scheduled to undertake fish trawl surveys in the Conwy Bay and north Constable Bank areas between 7th-10th October and 13th-20th October inclusive. The fishing surveys will consist of a maximum of two 1-hour long trawls per day. A sediment grab sampling survey will also be conducted in the Red Wharf Bay area between 13th-20th October.
The work will be undertaken by Bangor University’s survey vessel ‘Prince Madog’, call sign ZNLJ5, monitoring VHF channel 77.
Please coordinate with the vessel during this period and note that the sampling locations may vary slightly depending on weather and other factors.
Contacts:
Scientific Lead (vessel mobile): 07860342451
School of Ocean Sciences, Askew Street, Menai Bridge, LL59 5AB
Dr Ian McCarthy ([email protected]): 01248 382862
Dr Michael Roberts ([email protected]): 01248 383966
| Contact Details | |
|---|---|
| Vessel name | Prince Madog |
| Call Sign | ZNLJ5 |
| IMO | 9229611 |
| MMSI | 235234000 |
| Vessel Contact | [email protected] |
| Vessel Specifications | |
|---|---|
| Length | 34.9m |
| Beam | 8.5m |
| Draft | 3.7m |
To research local demersal fish populations as part of an ongoing 50-year study, 1-hour rockhopper otter trawl surveys will be undertaken in the boxed areas indicated on the chart below. The surveys will be conducted between 7th-10th October and 13th-20th October inclusive. The exact locations (start and end points) for the trawls will be dependent on factors associated with weather, tide and time available. A maximum of two 1-hour trawls will be conducted each day as per dispensation from Welsh Government (DISP_2024_024)
Offshore 1 – within an area bounded by 53 28’ and 53 30’ N and 3 40’ and 3 52.5’ W
Offshore 2 – within an area bounded by 53 28’ and 53 30’ N and 3 40’ and 4 00.0’ W
4 Fathom Bank – within an area bounded by 53 21.2’ and 53 21.6’ N and 3 52.4’ and 3 58.5’ W
Puffin – within an area bounded by 53 58.5’ and 53 21.2’ N and 3 40’ and 4 03.5’ W
Inside Conwy – within an area bounded by 53 18.1’ and 53 21.4’ N and 3 52.8’ and 4 00.5’ W
A survey of the benthic infaunal community (animals living in the surface sediment) in Red Wharf Bay will be conducted between 13th and 20th October. Triplicate sediment samples will be collected using a Day grab from each of 15 sampling sites located along three depth profiles as shown in the figure below (see Table for planned co-ordinates)
At each sampling site, three grab samples will be taken as close together as possible. Each grab sample will collect sediment from 0.1m2 of seabed.
| Depth | Location | Long DD | Lat DD |
|---|---|---|---|
| D1 | D1L1 | -4.19306 | 53.33311 |
| D1 | D1L2 | -4.17866 | 53.33008 |
| D1 | D1L3 | -4.16729 | 53.32679 |
| D1 | D1L4 | -4.15541 | 53.32401 |
| D1 | D1L5 | -4.14353 | 53.32073 |
| D2 | D2L1 | -4.18472 | 53.36268 |
| D2 | D2L2 | -4.17234 | 53.35838 |
| D2 | D2L3 | -4.16046 | 53.35409 |
| D2 | D2L4 | -4.14707 | 53.3508 |
| D2 | D2L5 | -4.13191 | 53.34575 |
| D3 | D3L1 | -4.17386 | 53.39401 |
| D3 | D3L2 | -4.16097 | 53.38997 |
| D3 | D3L3 | -4.14909 | 53.38593 |
| D3 | D3L4 | -4.1362 | 53.38239 |
| D3 | D3L5 | -4.12155 | 53.37834 |
Aid to Navigation Starboard No C9 ( Y Felinheli) Fl(3).G 10s is now on its new station
53°10’.62 N 004°13’.82 W
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
All mariners are advised as follows:
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
All mariners are advised that a pontoon section has dragged up-river to a position south of Conwy Bridge in the vicinity of the RSPB bird sanctuary. The position is latitude 53° 16.41’ N, longitude 003° 48.43’ W. The pontoon is unlit.
Matthew Forbes
MSc LLB (hons) BSc AFNI
Conwy Harbour Master
| Activity | Friday | Saturday | Sunday |
|---|---|---|---|
| Race Admin (When not Racing) | 15:00 – 17:00 | 09:30 – 16:45 | 10:30 – 18:00 |
| Scrutineering (Majority to be done on Friday) | 15:00 – 17:00 | 08:00 – 08:30 | 08:00 – 08:30 |
| OCR / Jet Ski / ProCat & Safety Briefing | 10:00 – 10:30 | 11:00 – 11:15 | |
| Launching Jet Ski / ProCat & Boat | N/A | 11:00 – 14:00 | 12:00 – 15:00 |
| Jet Ski Races 1 & 3 – 25min + Lap | 12:00 – 12:30 | 13:00 – 13:30 | |
| ProCat Races 1 & 4 – 10min + Lap | 12:45 – 13:00 | 13:45 – 14:00 | |
| PowerBoat Races 1 & 3 – 25min + Lap | 13:15 – 13:45 | 14:15 – 14:45 | |
| ProCat Races 2 & 5 – 10min + Lap | 14:00 – 14:15 | 15:00 – 15:15 | |
| PowerBoat Races 2 & 4 – 25min + Lap | 14:30 – 15:00 | 15:30 – 16:00 | |
| ProCat Races 3 & 6 – 10min + Lap | 15:15 – 15:30 | 16:15 – 16:30 | |
| Jet Ski Races 1 & 3 – 25min + Lap | 15:45 – 16:15 | 16:45 – 17:30 | |
| Social | TBA | N/A | |
| Prizegiving | 19:00 |
Further to NtoM 23/2025 please see the confirmed race times for the annual OCRDA Powerboat racing event.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
NORTH COAST OF WALES
COLWYN BAY
RHOSNEIGR BUOY
Latitude 53° 19.066’N., Longitude 003° 43.975’W.
Amendment:
Unlighted buoy converted to a lighted buoy, exhibiting a Fl G 2.5s light character.
No further notice will be given.
By Order,
Commander N. Hare
Director of Navigational Requirements
Trinity House,
Tower Hill,
London,
EC3N 4DH
7th August 2025
On Saturday the 15th and Sunday the 16th of August Caernarfon Harbour is hosting the annual OCRDA Powerboat racing.
Mariners are advised that there will be Powerboat and Jet ski racing in the area outside the River Seiont and Victoria Dock There will be potential delays in being able to navigate inbound and outbound of both the River Seiont and the Victoria Dock. Please be patient and follow the official’s requests.
Navigation inside the BLUE area is strictly prohibited during the racing times.
Please contact the Dock Master on VHF ch80 for further info on the race days.
Timings are subject to change at short notice
| Activity | Saturday | Sunday |
|---|---|---|
| OCR / Jet Ski / ProCat & Safety Briefing | 10:00 – 10:30 | 11:00 – 11:15 |
| Launching Jet Ski / ProCat & Boat | 11:00 – 14:00 | 12:00 – 15:00 |
| Jet Ski Races 1 & 3 – 25min + Lap | 12:00 – 12:30 | 13:00 – 13:30 |
| ProCat Races 1 & 4 – 10min + Lap | 12:45 – 13:00 | 13:45 – 14:00 |
| PowerBoat Races 1 & 3 – 25min + Lap | 13:15 – 13:45 | 14:15 – 14:45 |
| ProCat Races 2 & 5 – 10min + Lap | 14:00 – 14:15 | 15:00 – 15:15 |
| PowerBoat Races 2 & 4 – 25min + Lap | 14:30 – 15:00 | 15:30 – 16:00 |
| ProCat Races 3 & 6 – 10min + Lap | 15:15 – 15:30 | 16:15 – 16:30 |
| Jet Ski Races 1 & 3 – 25min + Lap | 15:45 – 16:15 | 16:45 – 17:30 |
| Prizegiving | 19:00 |
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master