The Commissioners of Irish Lights are responsible for Safety at Sea.  Their motto is In Salutem Omnium - For the Safety of All.   See the files at the end of the page and www.irishlights.ie

From the 1800s they have managed all the lights, buoys and beacons round the coast.  The role has changed dramatically in the last few years as their funding used to be from shipping dues in British and Irish ports, paid out through Trinity House in London. This was ended and their funding now come from the Department of the Marine in Ireland.  With the development of satellite geo-positioning, the necessity for lighthouses and buoys is diminished.  However, they must be 

maintained for use in the event of a breakdown in communications.  All the functions of the lighthouses are now concentrated in a battery of computer terminals on a desk in Dun Laoghaire, Co. Dublin. The Irish Lights have also simplified the upkeep and costs of the individual lighthouses by installing LED lights superseding the Fresnel Lens lights.  The range of the LED lights is not as long as the Fresnel Lens lights.