WThe Admiralty Compass Observatory, originally known as the Compass Branch (1842–1917) and later known as the Compass Department (1917–1968) and Compass Directorate (1968–1971) was established in 1842 to provide the Royal Navy with services for the design, development, inspection, testing and repair of compasses and certain other instruments. It subsequently undertook requirements for the other services as appropriate. It existed until 1971 when it was absorbed within the Admiralty Surface Weapons Establishment.
WThe Admiralty Experiment Works (AEW) was the British Admiralty research establishment, responsible for improving propeller design, manoeuvrability and seakeeping in Royal Navy vessels. The Experiment Works existed from 1872 to 1977 and for most of its history was based at the Haslar Gunboat Yard in Gosport, South Hampshire. It ceased independent operations in 1977, merging with the Admiralty Marine Technology Establishment and ultimately with the Defence Research Agency in the Ministry of Defence.
WThe Admiralty Mining Establishment originally known as the Mine Design Department was a technical department of the British Royal Navy responsible for both the design of naval mines and the development of suitable countermeasures from 1915 to 1951
WThe Admiralty Signal and Radar Establishment (ASRE) originally known as the Experimental Department and later known as the Admiralty Signal Establishment (ASE) was a research organisation of the British Royal Navy established in 1917. It existed until 1959 when it was merged with the Admiralty Gunnery Establishment to form the Admiralty Surface Weapons Establishment (ASWE). Its headquarters were located in Haslemere, Surrey, England.
WThe Admiralty War Staff was the former senior naval staff operational planning organisation within the British Admiralty that existed from 1912–17. It was instituted on 8 January 1912 by Winston Churchill in his capacity as First Lord of the Admiralty and was in effect a war council whose head reported directly to the First Sea Lord. After the First World War ended, the War Staff was replaced by the Admiralty Naval Staff department.
WThe Battle Cruiser Fleet, (BCF), later known as Battle Cruiser Force, a naval formation of fast battlecruisers of the Royal Navy, operated from 1915 to 1919.
WThe Board of Invention and Research (BIR) was a British expert-level committee, initiated by the Admiralty of the Royal Navy. Established in 1915, the board was responsible for soliciting expert scientific assistance to solve tactical and technical problems. It was a sister organisation to the Munitions Inventions Department which had been set up in April 1915 and the Air Inventions Committee (AIC), once it became become fully operational in the summer of 1917.
WThe Chemical Department and later known as the Central Dockyard Laboratory was the Admiralty department that was responsible for the testing and trials of lubricants, metals and paints for the Royal Navy it was based at Portsmouth, England from 1870 to 1977.
WThe Department of the Director of Dockyards, also known as the Dockyard Branch and later as the Dockyards and Fleet Maintenance Department, was the British Admiralty department responsible from 1872 to 1964 for civil administration of dockyards, the building of ships, the maintenance and repair of ships at dockyards and factories, and the supervision of all civil dockyard personnel.
WThe Mercantile Movements Division originally known as the Convoy Section was a former Directorate of the British Admiralty, Naval Staff that coordinated, organised and plotted all Merchant Navy convoys, routing and schedules from 1917 until 1920.
WThe Mobilisation Division was the former Directorate of the British Admiralty Naval Staff responsible for mobilisation requirements, manning and war preparation planning from 1912-1918.
WThe Naval Artillery and Torpedoes Division was a Directorate of the British Admiralty, Naval Staff that was created in June 1918 to decide weapons employment policy and also to develop weapon requirements. This division was also responsible for requirements for ship protection against weapons it existed until 1920 when its responsibilities were divided into two new directorates the Gunnery Division and the Torpedo Division.
WThe Naval Intelligence Division (NID) was created as a component part of the Admiralty War Staff in 1912. It was the intelligence arm of the British Admiralty before the establishment of a unified Defence Intelligence Staff in 1964. It dealt with matters concerning British naval plans, with the collection of naval intelligence. It was also known as "Room 39", after its room number at the Admiralty.
WThe Naval Stores Department also known as the Department of the Director of Naval Stores was initially a subsidiary department of the British Department of Admiralty, then later the Navy Department responsible for managing and maintaining naval stores and the issuing of materials at naval dockyards and establishments for the building, fitting and repairing of Royal Navy warships from 1869 to 1966.
WThe Operations Division was a former Directorate of the Admiralty Naval Staff responsible for the creation and implementation of long-term policy in regards to the composition of all Royal Navy fleets, squadrons and commands and including operational planning and monitoring from 1912-1961.
WThe Signal Division was a Directorate of the Admiralty Naval Staff responsible for policy, control and management of all naval communications from 1914 to 1964.
WThe Training and Staff Duties Division and later known as the Tactical and Staff Duties Division was a directorate of the Admiralty Naval Staff of the Royal Navy responsible for the tactical use of naval weapons and the training of naval personnel in relation to operational requirements from 1917 to 1958.
WThe Victualling Department originally known as the Department of the Comptroller of Victualling and Transport Services or the Victualling Office, also known as the Department of the Director of Victualling was the British Admiralty department responsible for civil administration of Victualling Yards and the storing and supply of Naval Victuals for the Royal Navy from 1832 to 1964.