HMS Porpoise (S01) was a Porpoise-class submarine of the Royal Navy. She was launched on 25 April 1956, commissioned on 17 April 1958, and was decommissioned in 1982. Finally, she was sunk as a target in 1985 in torpedo trials, for which purpose she was painted bright red.
She had been used as a training target while still serving with the Navy; in 1979 her casing, ballast tanks and vents were reinforced so that unarmed torpedoes could be fired at her without the risk of sinking.
In 2000, a glacier in East Greenland was named after her
Accidents and incidents
Notable accidents involving HMS Porpoise 18 October 1963: Suffered superficial damage departing Portsmouth harbour after colliding with the aircraft carrier HMS Centaur. 1 January 1969 - Entangled in the nets of the French trawler Belle Poule. 18 April 1982 - HMS Porpoise became entangled in the fishing nets of the Irish trawler Sharelga. The Sharelga, after travelling backwards two miles for twenty minutes, capsized and sank."The day 'Sharelga' was sunk by a sub" The Irish Independent.
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