The British Aerospace Sea Harrier is a naval short take-off and vertical landing/vertical take-off and landing jet fighter, reconnaissance and attack aircraft. It is the second member of the Harrier family developed. It first entered service with the Royal Navy in April 1980 as the Sea Harrier FRS1 and became informally known as the "Shar". Unusual in an era in which most naval and land-based air superiority fighters were large and supersonic, the principal role of the subsonic Sea Harrier was to provide air defence for Royal Navy task groups centred around the aircraft carriers. The Sea Harrier served in the Falklands War and the Balkans conflicts; on all occasions it mainly operated from aircraft carriers positioned within the conflict zone. Its usage in the Falklands War was its most high profile and important success, when it was the only fixed-wing fighter available to protect the British Task Force. The Sea Harriers shot down 20 enemy aircraft during the conflict; 2 Sea Harriers were lost to enemy ground fire. They were also used to launch ground attacks in the same manner as the Harriers operated by the Royal Air Force. The Sea Harrier was marketed for sales abroad, but India was the only other operator after attempts to sell the aircraft to Argentina and Australia were unsuccessful. A second, updated version for the Royal Navy was made in 1993 as the Sea Harrier FA2, improving its air-to-air abilities and weapons compatibilities, along with a more powerful engine; this version was manufactured until 1998. The aircraft was withdrawn from service early by the Royal Navy in 2006, but remained in service with the Indian Navy for a further decade until its retirement in 2016. Development In the post-World War II era, the Royal Navy began contracting in size. By 1960, the last battleship, , was retired from the Navy, having been in service for less than fifteen years. In 1966 the planned CVA-01 class of large aircraft carriers was cancelled. During this time, requirements within the Royal Navy began to form for a vertical and/or short take-off and landing (V/STOL) carrier-based interceptor to replace the de Havilland Sea Vixen. The first V/STOL tests on a ship began with a Hawker Siddeley P.1127 landing on in 1963. A second concept for the future of naval aviation emerged in the early 1970s when the first of a new class of "through deck cruisers"