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 Between 1968 and 1970, Cliona, Maev and Macha were withdrawn from service.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
Britannia Royal Naval College Commonwealth students are part of the student body. The Royal Fleet Auxiliary sends its officer cadets to BRNC for an 10-week initial officer training course, before they start at a maritime college. Following the closures of the Royal Naval Engineering College, Manadon, in 1994 and the Royal Naval College, Greenwich, in 1998, BRNC is the sole naval college in the United Kingdom. Slightly removed from the main buildings is Sandquay, which is below the college on the River Dart. It is primarily used for seamanship and boat handling training. Cadets are required to know that there are 187 steps from