It provides the first beacon along the northern coast of Anglesey, followed by lighthouses, fog horns and other markers at North Stack, Holyhead Breakwater, the Skerries, the Mice and at the north-east tip of the island Trwyn-Du.
It provides the first beacon along the northern coast of Anglesey for east-bound ships. It is followed followed by lighthouses, fog horns and other markers at North Stack, Holyhead Breakwater, The Skerries, the Mice and at the north-east tip of the island Trwyn-Du.