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On This Day - August 20

1917E47Lost for reasons unknown.
1934Grampus (N56)Laid Down
1940Cachalot (N83)Torpedoed and sunk U-51 in the Bay of Biscay west of Nantes, France.
1940Undaunted (N55)Launched
1941Thrasher (N37)HMS Thrasher sinks the Greek sailing vessel San Stefano with gunfire off Cape Malea, Greece.
1941Unique (N95)HMS Unique torpedoes and sinks the Italian troop tansport Esperia 11 nautical miles off the Tripoli lighthouse, Libya.
1941Upholder (N99)HMS Upholder torpedoes and sinks the Italian merchant Enotria 5 nautical miles off Cape San Vito, Italy.
1944Satyr (P214)HMS Satyr fires four torpedoes against the German merchants Bochum and Emma Sauber off Skudesnes, Norway. All torpedoes missed their targets.
1962Otter (S15)Commissioned
2015Artful (S121)Arrived at Faslane for the first time

LossesSubmarine Badges