History of the Irish Naval Service started, and the ships were named "Cliona", "Maev" and "Macha". These three ships were to become a key part of the Naval Service in the 1950s and 1960s. The first formal training of Irish Naval Cadets took place at the Britannia Royal Naval College, Dartmouth, UK in 1947. Between 1968 and 1970, Cliona, Maev and Macha were withdrawn from service. These were replaced by three minesweepers commissioned in 1971: Grainne, Banba and Fola. In 1971 the Naval Service commissioned Verolme Cork Dockyard to build an offshore patrol ship. Named L.É Deirdre, it was the first naval vessel purpose-built in Ireland
HMY Britannia (Royal Cutter Yacht) marked the end of big yacht racing in Europe, with the smaller and more affordable International Rule 12 Metre class gaining popularity. Four known examples of "Britannia"s racing flags are preserved, one presented by Philip Hunloke to the Royal Cornwall Yacht Club, in whose Regattas "Britannia" was often a competitor between 1894 and 1935, the second at the Royal Northern and Clyde Yacht Club at Rhu and the third at the Royal St. George Yacht Club, which held two regattas in Kingstown for the first season of the RYA linear rating rule in 1896. "Britannia"s skipper William G. Jameson had