Caernarfon Notice to Mariners 16/2021

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