Caernarfon Notice to Mariners 24/2021

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