HMNB Devonport (Plymouth)

 military, navy

One of three UK operating bases for the Royal Navy, HMNB Devonport is the largest naval base in western Europe. The co-located Devonport Royal Dockyard is now owned and operated by Babcock International Group.

Ships based at the port are known as the Devonport Flotilla, and consist of amphibious assault ships, Type 23 frigates, Trafalgar class submarines, and hydrographic surveying vessels. Vessels of the former Royal Maritime Auxiliary Service, now operated by Serco Denholm, are also based here.

The Royal Navy Dockyard consists of 14 dry docks, four miles (6 km) of waterfront, 25 tidal berths, five basins and an area of 650 acres (2.6 km²). It is the main refitting base for all Royal Navy nuclear submarines.

Devonport serves as headquarters for the Flag Officer Sea Training, which is responsible for the training of all the ships of the Navy and Royal Fleet Auxiliary, along with many from foreign naval services.

Plymouth Naval Base Museum is a maritime museum under development at Devonport.