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British Submarine Losses in World War Two

In Date Order

Oxley10.9.39Sunk by accident off Norway. Mistaken for U-boat and torpedoed by HMS/M Triton.
Seahorse7.1.40Sunk in Heligoland Bight, North Sea, by 1st German Minesweeping Flotilla.
Undine7.1.40Sunk in Heligoland Bight, North Sea. Depth charged by German minesweepers.
Starfish9.1.40Sunk in Heligoland Bight, North Sea. Depth charged by German minesweeper.
Thistle10.4.40Torpedoed and sunk off Skudenes, Norway, by German U-4.
Tarpon14.4.40Sunk by German minesweeper in North Sea.
Sterlet18.4.40Depth charged and sunk by German A/S trawlers, in Skagerrak
Unity29.4.40Sunk in collision with Norwegian ship SS Atle Jarl, off the River Tyne, in North Sea
Seal5.5.40Surrendered off the Skaw, in Kattegat. Taken to Kiel and became the German "UB"
Grampus13.6.40Sunk off Port Augusta, Sicily, in Mediterranean, by Italian torpedo boats
Odin14.6.40Sunk in Ionian Sea, Mediterranean, depth charged by Italian naval units.
Orpheus26.6.40Sunk by gunfire from Italian ship Strale in the Gulf of Taranto, in Mediterranean.
Shark6.7.40Sunk off Norway. Attacked by German aircraft, sunk in tow.
Salmon9.7.40Sunk off Norway, presumably mined.
Phoenix17.7.40Depth charged and sunk by Italian torpedo boat off Sicily, in Mediterranean.
Thamesca.23.7.40Sunk off Norway/Denmark, presumably mined.
Narwhal1.8.40Sunk off Norway, presumably mined.
Oswald1.8.40Rammed and sunk by Italian destroyer Vivaldi in Mediterranean
Spearfish5.8.40Torpedoed and sunk by torpedo from German U-34 off Norway
H4918.10.40 Depth-charged and sunk by German Jaeger-boats Uj116 and Uj118 off Texel, Dutch coast, in North Sea
Rainbow19.10.40 Sunk in Mediterranean. Rammed and sunk by the Italian merchant Antonietta Costaoff Durazzo in the Adriatic (some reports, for many years, stated that she was sunk by Italian s/m Enrico Toti, but general consensus is that she was lost as above - probably confusion caused by the loss of Triad, below
Triad20.10.40Sunk in Mediterranean. Possibly by Italian s/m Enrico Toti by gunfire.
Swordfish7.11.40Mined and sunk off Isle of Wight.
Regulus6.12.40Lost in Strait of Otranto, Mediterranean, cause unknown.
Triton18.12.40Lost on patrol in lower Adriatic.

Snapper12.2.41Sunk in Bay of Biscay
Usk3.5.41Mined and sunk off Cape Bon, Tunisia, Mediterranean
Undaunted13.5.41Lost off Tripoli, Mediterranean, probably mined.
Umpire19.7.41Sunk in collision with British A/S trawler Peter Hendricks in North Sea
Union22.7.41Sunk in Mediterranean by Italian torpedo boat off Pantellaria.
Cachalot4.8.41Rammed and sunk by Italian torpedo boat Papa off Cyrenaica, in Mediterranean. Scuttled to avoid capture.
P3320.8.41Sunk in Mediterranean, believed mined off Tripoli.
P3223.8.41Sunk in Mediterranean, believed mined off Tripoli.
Tetrarch2.11.41Sunk in Mediterranean, believed mined in the Strait of Sicily.
Perseus1.12.41Hit mine and sunk off Cephalonia, Greece.
H3124.12.41Sunk in Bay of Biscay

Triumph20.1.42Sunk in Mediterranean, presumed mined in Aegean Sea, off Milos.
Tempest13.2.42Attacked and sunk by Italian torpedo boat in Mediterranean
P3825.2.42Depth charged and sunk by Italian torpedo boat in Mediterranean
P3926.3.42Bombed beyond repair at Malta, beached at Kalkara
P361.4.42Bombed and sunk by aircraft at Malta
Pandora1.4.42Bombed and sunk by aircraft at Malta
Upholder14.4.42Depth charged and sunk off Tripoli, in Mediterranean.
Urge6.5.42Depth charged and sunk by Italian torpedo boat off Tripoli, in Mediterranean
P551/Jastrzab 2.5.1942Acting as an escort to convoy QP.11 when attacked in error by Destroyer HNoMS St. Albans (former RN Lend/Lease 'Clemson' destroyer) and Minesweeper HMS Seagull, in Norwegian Sea in position 71º30'N, 12º32'E. 5 men died.
Olympus8.5.42Hit mine and sunk in swept channel leaving Malta.
P51421.6.42Mistaken for U-boat and rammed by minesweeper HMCS Georgian in Western Atlantic, between Newfoundland and Nova Scotia.
Thorn6.8.42Depth charged and sunk by Italian torpedo boat Pegaso between Crete and Tripoli, in Mediterranean
Talisman18.9.42Sunk in Mediterranean, presumed mined in Strait of Sicily.
Unique24.10.42Sunk in Atlantic, on passage from UK to Gibraltar.
Unbeaten11.11.42Sunk in Bay of Biscay, Atlantic, in error by Wellington of No 172 Sqdn RAF Coastal Command, 110nm SSW of Ushant.
Utmost24.11.42Depth charged and sunk by Italian torpedo boat off west coast of Sicily.
P22212.12.42Sunk by Italian torpedo boat off Naples, Mediterranean.
Traveller12.12.42Sunk in Mediterranean, presumed mined in Gulf of Taranto.
P4825.12.42Depth charged and sunk by Italian corvettes off Zemba Island in Gulf of Tunis.

P3118.1.43Sunk in Mediterranean, presumed mined north of Corsica.
Vandal24.2.43Sunk by accident in Firth of Clyde
Tigris10.3.43Sunk in Mediterranean, presumed mined.
Thunderbolt13.3.43Depth charged and sunk by Italian A/S boat Cicogna off St.Vito, north of Sicily.
Turbulent23.3.43Depth charged and sunk off Maddalena, Sardinia.
Regent16.4.43Sunk in Mediterranean, presumed mined.
P61518.4.43Torpedoed and sunk off West Africa by German U-123.
Splendid21.4.43Sunk in Mediterranean. Scuttled after depth charge attack by German destroyer off Corsica.
Sahib24.4.43Depth charged by Italian corvette Gabbiano, abandoned and scuttled, in Mediterranean
Untamed30.5.43Sunk during exercises off Scotland - Salvaged and renamed Vitality
Parthian11.8.43Sunk in Mediterranean, presumed mined in southern Adriatic.
Saracen18.8.43Depth charged and sunk by Italian corvette off Bastia.
X817.9.43Lost in attack on Tirpitz. (Lost en route).
X522.9.43Lost in attack on Tirpitz
X622.9.43Lost in attack on Tirpitz
X722.9.43Lost in attack on Tirpitz
X103.10.43Lost in attack on Tirpitz (Scuttled on return trip).
Usurper11.10.43Sunk in Mediterranean, presumed mined.
X915.10.43Lost in attack on Tirpitz
Trooper17.10.43Lost in Aegean Sea, possibly mined.
Simoom19.11.43Sunk in Mediterranean, possibly mined off Kos, Greece.
 
X227.2.44Sunk in collision in Pentland Firth
Graph20.3.44Wrecked off coast of Scotland
Stonehenge22.3.44Sunk in Indian Ocean. Unknown reason. (New research - see Stonehenge)
Syrtis28.3.44Mined and sunk off Norway
Sickle18.6.44Sunk, presumed mined, in the Antikithera Channel in Eastern Mediterranean.
Stratagem22.11.44Depth charged and sunk by Japanese patrol craft off Malacca.
Porpoise19.1.45Bombed and sunk by Japanese aircraft in Malacca Strait, Indian Ocean
Summary: Of the 82 losses above, a small number were 'constructive' losses - they were so badly damaged that they were 'written-off'. The total figure generally given is 78. Some were bombed at Malta and beached. The Untamed was raised and renamed Vitality. For the record, 46 submarines were lost in the Mediterranean - with around 1600 men.

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