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The Westland Wessex was the first British helicopter to have a gas turbine engine

It was brought back into full operational service when war with Argentina broke out in 1982 after the latter had invaded and then occupied the Falkland Islands. Seven reserve frigates and their helicopters were recommissioned for active service in the South Atlantic. During the conflict, a Wasp, operating from HMS Endurance, the Antarctic patrol ship, launched a number of torpedoes which homed in on and damaged the Argentine submarine Santa Fe, which posed a potential risk to the British Task Force that was steaming towards the Falkland Islands. The submarine was later run aground by her crew due to the damage she had sustained, thus becoming the first casualty of the sea war, as well as the first direct engagement by the Royal Navy Task Force.