Her Majesty's Naval Base, Devonport , is one of three operating bases in the United Kingdom for the Royal Navy . HMNB Devonport is located in Devonport, in the west of the city of Plymouth in Devon, England. It is the largest naval base in Western Europe and is the sole nuclear repair and refuelling facility for the Royal Navy. The co-located Royal Dockyard is owned and operated by the Marine division of Babcock International Group , who took over the previous owner Devonport Management Limited in 2007. The BM operation is commonly called Devonport Royal Dockyard. From 1934 until the early 21st century the Naval Barracks on the site was named HMS Drake . Recently, the name HMS Drake was extended to cover the entire Base; the barracks buildings are now termed the Fleet Accommodation Centre.In 2009 the Ministry of Defence announced the conclusion of a long-running review of the long-term role of three naval bases. Devonport will no longer be used as a base for attack submarines after these move to Faslane by 2017, and the Type 45 destroyers are based at Portsmouth. However, Devonport retains a long-term role as the dedicated home of the amphibious fleet, survey vessels and half the frigate fleet.