821 Naval Air Squadron
| 821 Naval Air Squadron | |
|---|---|
| Active | 1933–1940 1941–1943 1944–1946 |
| Country | UK |
| Branch | Royal Navy |
| Type | Carrier based squadron |
| Role | Offensive Support |
| Part of | Fleet Air Arm |
| Battle honours | Libya 1942 Mediterranean 1942–3 |
821 Naval Air Squadron was a Royal Navy Fleet Air Arm carrier based squadron formed on 3 April 1933 with the transferral and amalgamation of the Fairey III aircraft from 446 and half of 455 Flight (Fleet Spotter Reconnaissance) Flights Royal Air Force to the newly formed Fleet Air Arm of the Royal Air Force. The squadron operated during the Second World War.
The squadron was upgraded to use the Fairey Seal aircraft, and then embarked aboard HMS Courageous with the Home Fleet in May 1933. The Abyssinian crisis in August 1935 caused the squadron to be briefly transferred to the Mediterranean, but it returned to the UK in February 1936. It then transferred its Seals to 822 Naval Air Squadron and received as replacements Blackburn Shark IIs, which it used to take up the role of Torpedo Spotter Reconnaissance. By September 1937 the Sharks had been replaced by Fairey Swordfish and the Squadron transferred to the new aircraft carrier HMS Ark Royal in November 1938. They sailed to the Mediterranean in spring 1939, and as war loomed they were transferred to Admiralty control on 24 May 1939.
Operating off Ark Royal the squadron was responsible for the first allied U-boat kill of the war, when they sank U-39, after she had unsuccessfully tried to torpedo Ark Royal. The squadron sailed with the carrier to the South Atlantic and Indian Ocean, searching for German shipping and commerce raiders. After briefly operating in the Mediterranean, the German invasion of Norway in April 1940 caused Ark Royal to be recalled to support allied operations in Norway. The squadron was used to attack enemy positions, but on 21 June an attempt was made to sink the German battleship Scharnhorst. The squadron sustained heavy losses in this unsuccessful operation and was forced to disband in December. A single flight, X Flight, continued in service though, with six aircraft. They sailed to Gibraltar aboard HMS Argus and then to Malta aboard HMS Ark Royal. They covered the Malta Convoys, before being absorbed in 815 Naval Air Squadron.
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