Caernarfon Notice to Mariners 17/2026

On Saturday the 14th 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

For course charts and further information, see Caernarfon Harbourmaster Notices to Mariners.

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master