The Second Sea Lord and Deputy Chief of Naval Staff is deputy to the First Sea Lord and the second highest-ranking officer to currently serve in the Royal Navy and is responsible for personnel and naval shore establishments. Originally titled Second Naval Lord in 1830, the post was restyled Second Sea Lord in 1904. They are based at Navy Command, Headquarters.
The post of Controller of the Navy was originally created in 1859 when the Surveyor of the Navy's title changed to Controller of the Navy. In 1869 the controller's office was abolished and its duties were assumed by that of the Third Naval Lord whose title then changed to Third Naval Lord and Controller of the Navy. In 1904 the title was changed again to Third Sea Lord and Controller of the Navy. In 1965 the office of the Third Sea Lord was abolished. The post-holder is responsible for procurement and matériel in the British Royal Navy.
The Home Fleet was a fleet of the Royal Navy that operated from the United Kingdom's territorial waters from 1902 with intervals until 1967. In 1967, it was merged with the Mediterranean Fleet creating the new Western Fleet.
The Fourth Sea Lord and Chief of Naval Supplies originally known as the Fourth Naval Lord was formerly one of the Naval Lords and members of the Board of Admiralty which controlled the Royal Navy of the United Kingdom the post is currently known as Chief of Materiel (Fleet). As of 2017, it is also known as Chief of Fleet Support, Chief of Materiel (Ships) then as of 2020, Director General Ships.
The Channel Fleet and originally known as the Channel Squadron was the Royal Navy formation of warships that defended the waters of the English Channel from 1854 to 1909 and 1914 to 1915.
The Navy Command is the current headquarters body of the Royal Navy, and as of 2012 its major organisational grouping. It is a hybrid, neither a command, nor simply an installation. Royal Navy official writings describe Navy Command Headquarters both as a physical site, on Whale Island, Hampshire, a collective formed of the most senior RN officers, and as a budgetary grouping.
The Vice Chief of the Naval Staff (V.C.N.S.) was a senior appointment in the Royal Navy usually a three-star rank and had a NATO ranking code of OF-8 that existed from 1941 to 1985 and was a member of the Admiralty Naval Staff.
The Deputy Chief of the Naval Staff (DCNS) is a senior appointment in the Royal Navy currently held by the Second Sea Lord. The incumbent is usually a three-star rank and had a NATO ranking code of OF-8, but the position has previously been held by an acting two-star ranked officer and a four-star ranked officer.
The Deputy First Sea Lord (D.F.S.L.) was a senior Royal Navy flag officer on the Board of Admiralty of the Royal Navy.
The Admiralty War Staff was the former senior naval staff operational planning organisation within the British Admiralty that existed from 1912 to 1917. 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.
The 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 to 1961.
The Naval Mobilisation Department also known as the Mobilisation and Movements Department was a former department of the British Admiralty initially from 1909 to 1912 and then again from 1918 to 1932. It was mainly responsible for plans, mobilisation and manning during the pre-World War I and post war period.
The Mobilisation Division was the former Directorate of the British Admiralty Naval Staff responsible for mobilisation requirements, manning and war preparation planning from 1912–1918.
The Gunnery 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. It was established in 1920 when the Gunnery and Torpedo Division was separated into an independent Gunnery Division and Torpedo Division. It existed until 1964 when the Department of Admiralty was abolished and replaced by a new Ministry of Defence.
The 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.
The Admiral Commanding, Reserves, was a senior Royal Navy post that existed from 1875 to 1976.
The Assistant Chief of the Naval Staff (Capability) is a senior Royal Navy appointment responsible he is accountable for planning and delivering the larger part of future maritime effectiveness; he does this on behalf of the First Sea Lord.
The Assistant Chief of the Naval Staff (Personnel) is a senior Royal Navy appointment responsible for the sustainable delivery of sufficient, capable and motivated personnel to the Naval Service in support of Defence Outcomes; he does this on behalf of the First Sea Lord and Chief of the Naval Staff. It has now subsumed under Director People and Training.
The Directorate of Navigation and Tactical Control (Naval) was a directorate of the Navy Department, Naval Staff first established in 1912, as the Navigation Department of Hydrographic Department of the Admiralty. In 1945, it was renamed the Navigation Division and assigned to the Admiralty Naval Staff. In 1946, it was redesignated Navigation and Direction Division until 1966, and now part of the Navy Department Naval Staff it was renamed the Directorate of Navigation and Tactical Control (Naval). The staff directorate was administered by the Director Navigation Tactical Control (Naval) who reported to the Assistant Chief of the Naval Staff (Warfare) it existed until 1968.
The Naval Staff Directorate is a military staff directorate created in 1985 as the Directorate of Naval Staff Duties. The directorate was originally part of the British Ministry of Defence and is now under the Ministry of Defence as part of Navy Command. It is currently administered by the Commodore Naval Staff now based at MOD HQ.
