54°24′28.7″N 5°21′59.6″W / 54.407972°N 5.366556°W[1] Cannon Rock is a skerry in the North Channel off the coast of the Ards Peninsula near Cloughey, County Down, Northern Ireland. It is the easternmost named point of Ireland. Cannon Rock is east of South Rock, on which there is a disused lighthouse.[2]