Travelling to Inis Oirr, the smallest of the Aran Islands, from Doolin in County Clare, I got an unexpected bonus when passing the Finnis Buoy, 0.8 nautical miles from the island. Not easy getting a good shot when trampolining up and down on a boat but you get the picture, so to speak. Incidentally I have labelled this post as county Galway, as Inis Oirr is county Galway but in fact it lies in the sea between Clare and Galway, so it could easily be Clare.
The Finnis Rock buoy is a First Class Cardinal Marker (as opposed to a fourth-rate one, presumably) It sends regular tweets (@FinnisBuoy) as to Wind Speed, Wave Height and Periods and Water Temperature. Not sure when she is there since, but probably about the turn of the millennium.
The Finnis Rock was the piece of marine topography that did for the MV Plassy (see below) now lying in rusting bliss on the coast of Inis Oirr. And, as Tedheads around the world will know, the Plassy features in the opening credits of Father Ted, as the camera sweeps across a supposed Craggy Island.