Caernarfon Notice to Mariners 16/2021
![](https://psycle-wordpress.s3.eu-west-2.amazonaws.com/nwcc/production/2021/04/SW-Rock-S-Cardinal-Buoy-300x200.png)
Aid to navigation Llanddwyn Island “South West Rock” South Cardinal, Y.B is on its appropriate station, but is partially submerged.
Position: 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