Caernarfon Notice to Mariners 06/2021
Aid to navigation Port No C2 Fl. R 10s is now on its appropriate station.
53° 07’.140 N 004 °24’.361 W
David John O’Neill
Caernarfon Harbour Master
Caernarfon Notice to Mariners 05/2021
Aid to Navigation Starboard No C3 Q.G is now on its appropriate position.
53° 07’.25 N 004° 23’.87 W
David John O’Neill
Caernarfon Harbour Master
Caernarfon Notice to Mariners 04/2021
Mariners are advised that the the Swelly Rock South Cardinal is now lit.
53°13’.16N – 04°10’.45W
Mariners are advised that this notice hereby replaces Notice 01/2021
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 03/2021
Aid to Navigation Starboard No C9 (Y Felinheli) Fl(3).G 10s is now on its charted position.
53°10’.70 N 004°13’.86 W
Mariners are advised that this notice hereby replaces Notice 02/2021.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 02/2021
Aid to navigation Starboard No C9 ( Y Felinheli) Fl(3).G 10s is off station.
Position: 53 10’.70 N 004 13’.86 W
Mariners are advised to navigate with caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Caernarfon Notice to Mariners 01/2021
Mariners are advised that the the Swelly Rock South Cardinal is unlit.
Position: 53º 13’.16N – 04º 10’.45W
Mariners are advised to navigate with caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master
Conwy Notice to Mariners 10/2020
All mariners are advised that the netting underneath the Conwy Road Bridge is loose and hanging down. Please navigate with caution.
Matthew Forbes
MSc LLB (hons) BSc MNI
Conwy Harbour Master
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Trinity House Notice to Mariners 19/2020
Discontinuation of the Differential GPS Service
The General Lighthouse Authorities are planning to shut down the Differential Global Positioning System (DGPS) from 31st March 2022. The DGPS service is a land-based enhancement to GPS which was designed to increase the accuracy of the system during the period when an intentional location error was introduced into GPS to make it less accurate. This error was removed in 2000.
Please click here to read the full notice on the Trinity House website.
Conwy Notice to Mariners 06/2020
Dredging operations are due to commence in Deganwy Marina on the 1st of October 2020. A cancellation notice will be issued upon completion of dredging operations.
Matthew Forbes
MSc LLB (hons) BSc MNI
Conwy Harbour Master