Caernarfon Notice to Mariners 24/2021
![](https://psycle-wordpress.s3.eu-west-2.amazonaws.com/nwcc/production/2020/06/Llanddwyn-South-West-Rock-Buoypng-300x200.png)
Aid to navigation Llanddwyn Island “South West Rock” South Cardinal, Y.B is off station.
53° 07.81′ N 004° 25.06′ W
Mariners are advised to exercise extreme caution in this area.
David John O’Neill
Harbwr Feistr Caernarfon Harbour Master