The Royal Naval Air Service (RNAS) was the air arm of the Royal Navy, under the direction of the Admiralty's Air Department, and existed formally from 1 July 1914 to 1 April 1918, when it was merged with the British Army's Royal Flying Corps to form a new service, the Royal Air Force, the first of its kind in the world.

During its first year it continued to be the Naval Wing of the joint Royal Flying Corps (which had been set up in 1912), but was administered by the Admiralty's new Air Department, but on 1 August 1915 the RFC became the flying branch of the British Army while the RNAS became "an integral part of the Royal Navy".

Background

In 1908 the British government had recognised that the use of aircraft for military and naval purposes should be investigated. To this end the Prime Minister, H. H. Asquith, approved the formation of an "Advisory Committee for Aeronautics" and an "Aerial Sub-Committee of the Committee of Imperial Defence". Both committees were composed of politicians, army officers and Royal Navy officers. On 21 July 1908 Captain Reginald Bacon, who was a member of the Aerial Navigation sub-committee, submitted to the First Sea Lord Sir John Fisher that a rigid airship based on the German Zeppelin be designed and constructed by the firm of Vickers. After much discussion on the Committee of Imperial Defence the suggestion was approved on 7 May 1909. The airship, named Mayfly, never flew and broke in half on 24 September 1911. The then First Sea Lord, Sir Arthur Wilson, recommended that rigid airship construction be abandoned.

The Royal Navy is the United Kingdom's navy.

Royal Navy may also refer to:

Air service may refer to: