History of the submarine class T (Royal Navy)

The T-Class was a submarine - class of the Royal Navy in World War II . The last boat in the class was decommissioned in Israel in 1975 .

1936-1938

At the beginning of the 1930s, the Royal Navy decided to build a new class of medium-sized submarines. The prototype HMS Triton was in 1936 Kiel established and put into service the 1,938th By the end of 1938, 13 more boats from the first construction lot, which was slightly smaller than the prototype, had been launched.

date	comment
August 28, 1936	The prototype HMS Triton (N15) is laid down at Vickers-Armstrong in Barrow-in-Furness .
December 21, 1936	HMS Thetis (N25, later HMS Thunderbolt ) islaid downat Cammell Laird in Birkenhead .
January 12, 1937	HMS Trident (N52) islaid downat Cammell Laird in Birkenhead.
March 3, 1937	HMS Tribune (N76) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock .
March 19, 1937	HMS Triumph (N18) is laid down at Vickers-Armstrong in Barrow-in-Furness.
October 5, 1937	HMS Tarpon (N17) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock.
October 5, 1937	HMS Triton is launched.
November 18, 1937	HMS Taku (N38) islaid downat Cammell Laird in Birkenhead.
December 7, 1937	HMS Thistle (N24) is laid down at Vickers-Armstrong in Barrow-in-Furness.
February 16, 1938	HMS Triumph is launched.
March 24, 1938	HMS Triad (N53) and HMS Truant (N68) are laid down at Vickers-Armstrong in Barrow-in-Furness.
May 11, 1938	HMS Tigris (N63) islaid downon the Chatham Dockyard in Chatham .
June 13, 1938	HMS Tuna (N94) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock.
June 29, 1938	HMS Thetis is launched.
August 24, 1938	HMS Tetrarch (N77) is laid down at Vickers-Armstrong in Barrow-in-Furness.
September 27, 1938	HMS Talisman (N78) is keeled at Cammell Laird in Birkenhead.
October 25, 1938	HMS Thistle is launched.
November 9, 1938	The Royal Navy puts HMS Triton into service.
November 21, 1938	HMS Torbay (N79) islaid downon the Chatham Dockyard .
December 7, 1938	HMS Trident is launched.
December 18, 1938	HMS Tribune (N76) is launched.

1939

When Great Britain entered the war on September 3, 1939, only three units of the class were available to the Royal Navy. Two more units will be put into service by the end of the year and the first boat of the second construction lot will be keeled. The existing submarines are used in the North Sea for reconnaissance purposes. In the following months of the so-called seated war there were no noteworthy combat successes.

date	comment
May 2, 1939	The Royal Navy puts HMS Triumph into service.
May 5, 1939	HMS Triad and HMS Truant are launched.
May 20, 1939	HMS Taku is launched.
June 1, 1939	HMS Thetis sinks on a test drive in the mouth of the Mersey . Only four men survived the accident, 99 were killed. The boat will later be lifted and put into service under the name HMS Thunderbolt .
4th July 1939	The Royal Navy puts HMS Thistle into service.
September 10, 1939	HMS Triton torpedoes and sunk 28 nautical miles south-southwest of Stavanger (Norway) at 58 ° 30 '  N , 5 ° 30'  O accidentally British submarine HMS Oxley . The Triton can only save two survivors.
September 16, 1939	The Royal Navy puts HMS Triad into service.
October 1, 1939	The Royal Navy puts HMS Trident into service.
October 17, 1939	HMS Tarpon is launched. The Royal Navy puts HMS Tribune into service.
October 31, 1939	HMS Tigris is launched. The Royal Navy puts HMS Truant into service.
November 14, 1939	HMS Tetrarch is launched. HMS Thrasher (N37) is keeled at Cammell Laird in Birkenhead.
December 26, 1939	HMS Triumph runs in the North Sea at 56 ° 44 '  N , 5 ° 0'  E on a German sea ​​mine and is badly damaged. The damage was repaired on the Chatham Dockyard by September 27, 1940.

1940

In 1940, six new boats from the second batch were launched and six pre-war boats from the first batch were put into service. On April 9, the German Reich extends the war to Scandinavia with the Weser Exercise Company . Since the German landing operation is expected by the British forces, a large number of the T-class submarines are also stationed in the approach area of ​​the invasion fleet. There are several combat successes, but also the first two losses. The German campaign in the west was followed by the Italian entry into the war and the French defeat in summer, after which the area of ​​operation of the British submarines expanded into the Biscay and the eastern and central Mediterranean. In autumn, two more boats are sunk in the Mediterranean by the Italian Navy .

date	comment
January 3, 1940	The Royal Navy puts HMS Taku into service.
January 6, 1940	HMS Tempest (N86) islaid downat Cammell Laird in Birkenhead.
January 17, 1940	HMS Traveler (N48) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock. HMS Tribune engages in Skagerrak at 57 ° 50 '  N , 11 ° 0'  O an unidentified German submarine with six torpedoes unsuccessfully.
January 29, 1940	HMS Talisman is launched.
February 15, 1940	The Royal Navy puts HMS Tetrarch into service.
February 28, 1940	HMS Triton tries to attack the blockade breaker Wangoni (7848 GRT) off Kristiansand (Norway) . The German ship escapes and breaks through the sea blockade.
March 8, 1940	The Royal Navy puts HMS Tarpon into service.
March 15, 1940	HMS Trusty (N45) and HMS Turbulent (N98) are keeled at Vickers-Armstrong in Barrow-in-Furness.
March 25, 1940	HMS Truant torpedoes and sunk before Jutland at 56 ° 42 '  N , 8 ° 4'  O German freighter Edmund Stinnes 4 (2189 BRT).
April 8, 1940	HMS Trident torpedoes and sunk to the south of Oslo fjord at 58 ° 57 '  N , 10 ° 25'  O German tanker Stedingen (8036 BRT, ex Posidonia ). HMS Triton unsuccessfully attacks the German cruisers Emden , Lützow and Blücher off Skagen (Denmark) with a total of ten torpedoes.
April 9, 1940	HMS Thistle engages southwest of Stavanger at 59 ° 0 '  N , 5 ° 10'  O the German submarine U 4 unsuccessful with a fan of four torpedoes. HMS Truant torpedoes and damaged before Kristiansand at 57 ° 55 '  N , 8 ° 14'  O German light cruiser Karlsruhe (6750 ts). The badly damaged cruiser is sunk by the German torpedo boat Greif three hours after the attack . HMS Torbay is launched.
April 10, 1940	HMS Thistle (N24) is sunk 20 nautical miles west of Stavanger at 59 ° 0 '  N , 5 ° 0'  E by the German submarine U 4 . That was the first loss of a T-class submarine. There were no survivors. HMS Trident engages SSE of the Oslofjord at 58 ° 36 '  N , 10 ° 58'  O the German cargo ship Eandsbek (2388 BRT) unsuccessfully with two torpedoes. HMS Triton torpedoed and sank in the Kattegat at 57 ° 27 '  N , 10 ° 46'  E the German transport ships Friedenau (5219 BRT) and Wigbert (3648 BRT) and at 57 ° 50 '  N , 11 ° 22'  E the German auxiliary Patrol boat V1507 / Rau 6 (356 GRT).
April 11, 1940	HMS Triad torpedoes and sunk in the Skagerrak south of Oslo fjord at 58 ° 30 '  N , 10 ° 35'  O German troop transport Ionia (3102 BRT).
April 17, 1940	HMS Taku mistakenly attacks the British destroyer HMS Ashanti with four torpedoes, but they miss it.
April 19, 1940	HMS Triad engages south of Oslo fjord at 58 ° 18 '  N , 10 ° 48'  O the German depot ship Qingdao unsuccessful with four torpedoes.
April 22, 1940	HMS Tarpon (N17) is declared missing. It may have been sunk on April 14, 1940 by the German M 6 minesweeper with depth charges. Another explanation is that she was sunk on April 10, 1940 west of Jutland at 56 ° 43 '  N , 6 ° 33'  E by the German submarine trap Schiff 40 / Schürbek .
April 23, 1940	HMS Tetrarch torpedoes and sunk in the Skagerrak at 58 ° 21 '  N , 10 ° 24'  O German U-Hunter UJ B / fail V (330 BRT).
April 25, 1940	HMS Trident reaches 30 miles south west of Lindesnes at 57 ° 30 '  N , 6 ° 10'  O the two German van Palime (2863 BRT) and Pelikan (3464 BRT) each having a torpedo to. Both torpedoes miss their targets.
May 2, 1940	HMS Trident attacks the German transport ship Cläre Hugo Stinnes 1 (5295 GRT) with on-board artillery and torpedoes in front of the Björn Fjord . The ship is damaged.
May 7, 1940	HMS Trooper (N91) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock.
May 8, 1940	HMS Taku attacks a German convoy with ten torpedoes east of Denmark at 56 ° 45 '  N , 6 ° 12'  E. The German torpedo boat Möwe (900 ts) is damaged. German escort vehicles then attack the submarine with depth charges for ten hours.
May 10, 1940	HMS Tuna is launched.
May 20, 1940	HMS Tetrarch hits the Danish fishing vessel Emmanuel in the North Sea at 56 ° 59 '  N , 6 ° 58'  E. The prize is brought to Leith . On the same day, at 56 ° 55 '  N , 6 ° 50'  O the Danish fish vehicle Terieven sunk with detonators.
May 23, 1940	HMS Truant prejudge Breidsundet at 71 ° 3 '  N , 24 ° 26'  O British freighter Alster (8514 BRT) unsuccessfully with two torpedoes. The German Alster fell into British hands in the Vestfjord on April 10, 1940 when it was seized by the destroyer HMS Icarus .
June 16, 1940	HMS Tetrarch torpedoes and sunk southwest of Lista (Norway) at 58 ° 12 '  N , 6 ° 13'  O German tanker Samland (5978 BRT).
June 20, 1940	HMS Thorn (N11) islaid downat Cammell Laird in Birkenhead. The Royal Navy puts HMS Tigris into service.
June 22, 1940	HMS Tribune unsuccessfully attacked a large German transporter (7000 GRT) with torpedoes off Standlandet (Norway).
June 23, 1940	HMS Trident prejudge Frohavet at 64 ° 21 '  N , 9 ° 12'  O German transporter Dithmar (10816 BRT) unsuccessfully with four torpedoes.
June 29, 1940	The Royal Navy puts HMS Talisman into service.
August 1, 1940	The Royal Navy puts HMS Tuna into service.
September 1, 1940	HMS Tigris sinks the French fishing vessel Sancte Michael (168 GRT) with on-board artillery in the Bay of Biscay near Brest . HMS Tuna unsuccessfully attacked a target identified as a submarine with six torpedoes 175 nautical miles east of Dundee at 56 ° 9 ′  N , 2 ° 15 ′  E.
September 2, 1940	HMS Tigris attacked the German submarine U 58 unsuccessfully with torpedoes in the Bay of Biscay 30 nautical miles southwest of Lorient at 47 ° 29 ′  N , 4 ° 4 ′  W.
September 3, 1940	HMS Truant intercepts the German freighter Tropic Sea (5781 GRT). The former Norwegian ship was from the German on June 18, 1940 Handelsstörkreuzer Orion been applied in the South Pacific and was designed by the German prize crew in the face of the British submarine 235 nautical miles north-west of Cape Finisterre at 46 ° 30 '  N , 11 ° 30'  W scuttled .
September 6, 1940	HMS Tribune unsuccessfully attacks a German submarine 15 nautical miles north-east of St. Kilda at 57 ° 58 ′  N , 8 ° 13 ′  W. It is very likely that it is U 56 .
September 22, 1940	HMS Truant torpedoed and sank the Italian cargo ship Providenza (8459 GRT) four nautical miles southeast of the Italian island of Ischia . HMS Tuna torpedoed and sank the German transporter Tirranna (7230 GRT) off the Gironde (France) 15 nautical miles southwest of Soulac-sur-Mer at 45 ° 19 ′  N , 1 ° 20 ′  W. The former Norwegian ship was on 10 June 1940 by the German Handelsstörkreuzer Atlantis ESE 675 nautical miles from Mauritius have been applied
September 24, 1940	HMS Tuna torpedoed and sank 35 nautical miles southwest of Saint-Nazaire at 47 ° 1 ′  N , 3 ° 2 ′  W the German seaplane tender Ostmark (1281 GRT).
4th October 1940	HMS Triton torpedoes and sinks the Italian cargo ship Franca Fassio (1858 GRT) 16 nautical miles north of Cape Noli (near Genoa ).
October 5, 1940	HMS Tigris unsuccessfully attacks a submarine in the Bay of Biscay. It was probably the Italian Otario .
October 8, 1940	HMS Trident attacks the German submarine U 31 with torpedoes 15 nautical miles south of Lorient at 47 ° 28 ′  N , 3 ° 25 ′  W. HMS Triton unsuccessfully attacks the Italian freighter Spezia (1825 GRT) with torpedoes off Vado Ligure (Italy) .
October 9, 1940	HMS Triad leaves the base on Malta for its final patrol.
October 15, 1940	HMS Triad (N53) is torpedoed and sunk south of the Gulf of Taranto at 38 ° 16 ′  N , 17 ° 37 ′  E by the Italian submarine Enrico Toti . There are no survivors.
October 16, 1940	HMS Tigris sinks the French fishing vessel Cimcour (250 GRT) with on-board artillery in the Bay of Biscay at 45 ° 44 ′  N , 3 ° 45 ′  W.
October 26, 1940	The Royal Navy puts the HMS Thetis, raised and overhauled after the accident in 1939, under the new name HMS Thunderbolt into service.
November 2, 1940	HMS Taku hits the German tanker Gedania (8923 GRT) with a torpedo 35 nautical miles southwest of Belle-Île at 46 ° 54 ′  N , 3 ° 50 ′  W in the Bay of Biscay , but it does not explode. HMS Tigris unsuccessfully attacks the Italian submarine Veniero with two torpedoes off the Gironde .
November 4th 1940	HMS Tetrarch torpedoes and sunk before Benghazi (Libya) at 31 ° 35 '  N , 19 ° 20'  O Italian freighter Snia Amba (2532 BRT).
November 12, 1940	HMS Tigris sunk the French fishing vessel Charles Edmond (301 GRT) with the deck gun 70 nautical miles west of the Gironde estuary at 45 ° 41 ′  N , 2 ° 57 ′  W.
November 25, 1940	HMS Talisman brings down the French fishing vessel Le Clipper (40 GRT) in the Bay of Biscay near Lorient at 47 ° 16 ′  N , 4 ° 16 ′  W. The captured ship is later brought to Falmouth .
November 28, 1940	HMS Triton (N15) leaves the base on Malta for its last patrol. The southern Adriatic is planned as the operational area . The submarine was probably lost in the Strait of Otranto around December 18 . There were no survivors. HMS Thrasher is launched.
December 13, 1940	HMS Truant torpedoed and sunk the Italian cargo ship Sebastiano Bianchi (1546 GRT) south of Calabria at 37 ° 58 ′  N , 16 ° 15 ′  E.
December 15, 1940	HMS thunderbolt torpedoes and sunk southwest of the Gironde near Bordeaux at 45 ° 25 '  N , 1 ° 22'  W Italian submarine Capitano Tarantini .
December 16, 1940	HMS Tribune attacked the German tanker Caribbean Sea (6973 GRT) with torpedoes in the Bay of Biscay east of the Île d'Yeu at 46 ° 46 ′  N , 2 ° 38 ′  W. HMS Truant torpedoes and sunk east of Punta Stilo at 38 ° 28 '  N , 16 ° 44'  O Italian tanker Bonzo (8177 BRT).
December 18, 1940	HMS Tuna unsuccessfully attacks the Italian submarine Brin west of the Gironde with torpedoes and on-board artillery. The following night the French tug Chassiron (172 GRT) with the deck gun was sunk west-southwest of the Gironde .
December 19, 1940	HMS Tribune unsuccessfully attacks the German cargo ship Birkenfels (6322 GRT) with torpedoes west-southwest of Belle-Île at 47 ° 2 ′  N , 4 ° 14 ′  W.
December 27, 1940	HMS Trident unsuccessfully attacks a darkened unidentified ship near Terceira ( Azores ) with five torpedoes.

1941

In 1941, the first eleven units of the third construction section were laid down and six units of the first and second construction section were put into service. This is offset by a loss in the Mediterranean, so that by the end of the year 15 units are in service with the Royal Navy. In addition to the operations in the North Sea, the focus of operations is shifting to the Mediterranean, where action is being taken against the Axis' supply routes in the war in North Africa . As a result of the German-Italian Balkan campaign and the subsequent airborne battle for Crete in the spring, the eastern Mediterranean also became a battlefield for British submarines. The bases on the Mediterranean are in the British crown colony of Gibraltar in the west, in Valletta on the besieged island of Malta in the center and in Alexandria in Egypt in the east. After the German attack on the Soviet Union in the summer, the USSR allows the Royal Navy to use Soviet naval bases on the Barents Sea . The Arctic bases serve the British submarines as a springboard for operations against German shipping off Norway and to secure the Allied supply lines to the year-round ice-free port of Murmansk in northwestern Russia.

date	comment
January 14, 1941	The Royal Navy puts HMS Torbay into service.
February 3, 1941	HMS Truant torpedoes and sunk northwest of Benghazi (Libya) at 32 ° 18 '  N , 19 ° 51'  O Italian cargo ship Multedo (1143 BRT).
February 4, 1941	HMS Truant attacks an Italian convoy with three torpedoes near Benghazi. The cargo ships Utilitas (5310 GRT) and Silvia Tripcovich (2365 GRT) are missed.
February 11, 1941	HMS Truant reaches 45 nautical miles north-northwest of Tripoli (Libya) at 33 ° 32 '  N , 12 ° 56'  O Italian freighter Bainsizza (7933 BRT) unsuccessful with the deck gun on. Escort vehicles then force the submarine to submerge. About two hours later, the submarine repeated the attack 60 nautical miles north of Tripoli at 33 ° 46 '  N , 12 ° 57'  E. This time three torpedoes are used, which also fail.
February 12, 1941	HMS Tigris torpedoed and sank the French fishing vessel Rene Camaleyre (243 GRT) in the Bay of Biscay five nautical miles east of Biarritz at 43 ° 30 ′  N , 1 ° 42 ′  W.
February 19, 1941	HMS Tigris torpedoed and sank the French cargo ship Jacobsen (523 GRT) off Bayonne . On the same day, the submarine torpedoed and sunk the French freighter Guilvinec (3273 GRT) 90 nautical miles southwest of the Gironde estuary at 44 ° 48 ′  N , 3 ° 1 ′  W.
March 5, 1941	HMS Triumph torpedoes and sunk off Cape dell 'Armi ( Calabria , Italy) at 37 ° 54'  N , 15 ° 46 '  O Italian freighter Marzamemi (958 BRT) and Colomba Lofaro (897 BRT).
March 14, 1941	HMS Trusty is launched.
March 18, 1941	HMS Thorn is launched.
March 19, 1941	HMS Truant attacks the Italian tanker Labor (510 GRT) unsuccessfully with torpedoes off Buerat (Libya) .
April 2, 1941	HMS Tigris torpedoed and sunk the German tanker Thorn (5486 GRT) 25 nautical miles west of the Loire estuary .
April 12, 1941	HMS Tetrarch torpedoes and sunk 30 nautical miles north-west of Tripoli (Libya) at 33 ° 29 '  N , 13 ° 1'  O Italian tanker Persiano (2474 BRT).
April 17, 1941	HMS Truant sank the Italian auxiliary submarine fighter V 62 / Vanna with the deck gun off Apollonia (Libya) .
April 21, 1941	HMS Truant damaged the Italian tanker Prometeo (1080 GRT) with the deck gun off Tripoli .
April 25, 1941	HMS P311 is laid down at Vickers-Armstrong in Barrow-in-Furness.
May 3, 1941	HMS Triumph sank the Italian auxiliary patrol boat V136 / Tugnin F. (425 GRT) with the on-board gun ten nautical miles west of Marsa el Brega (Libya ).
May 6, 1941	HMS Taku torpedoes and sunk in Tyrrhenian about 20 nautical miles north-northwest of Stromboli at 39 ° 11 '  N , 15 ° 5'  O Italian freighter Cagliari (2322 BRT). HMS Truant torpedoed and sank the Italian cargo and passenger ship Benghazi (1716 GRT) three nautical miles southeast of the lighthouse in Cavoli ( Sardinia ).
May 12, 1941	HMS Turbulent is launched.
May 14, 1941	The Royal Navy puts HMS Thrasher into service.
May 18, 1941	HMS Tetrarch torpedoes and sunk before Bengasi at 31 ° 55 '  N , 19 ° 55'  O Italian freighter Giovinezza (2362 BRT).
May 30, 1941	HMS Triumph damages the Italian auxiliary cruiser RAMB III (3667 BRT) with torpedoes off Benghazi .
June 1, 1941	HMS Torbay sinks a Greek sailing ship with on-board artillery in Doro Street.
June 3, 1941	HMS Torbay sinks a sailing ship with the deck gun off Mytilene .
June 5, 1941	HMS Triumph sunk in the Great Syrte at 31 ° 39 '  N , 15 ° 39'  O Italian auxiliary patrol boats Valoroso (340 BRT), V 190 / Frieda (246 BRT) and V 137 / Trio Frassinetti (244 BRT) with the deck gun.
June 6, 1941	HMS Torbay damages the Vichy-French tanker Alberta (6131 GRT) with the on-board gun off Cape Hellas .
June 10, 1941	HMS Torbay attacks an Italian convoy three times off the Dardanelles . The first attack started at 9:40 a.m. and was unsuccessful. The second attack was carried out at 10:43 a.m., whereby the tanker Utilitas (5342 BRT) was hit but the detonator of the torpedo did not go off. During the third attack at 12:08 p.m. the tanker Giuseppina Ghirardi (3319 GRT) was sunk eight nautical miles from Cape Hellas by a torpedo hit. HMS Tempest is launched.
June 11, 1941	HMS Taku sinks the German ammunition transporter Tilly LM Russ (1600 GRT) with torpedoes off Benghazi . HMS Torbay rams and sinks a Greek freighter 15 nautical miles south of Mytilene .
June 12, 1941	HMS Taku torpedoes and sunk in the Great Syrte 70 nautical miles west-northwest of Benghazi at 32 ° 27 '  N , 18 ° 42'  O Italian transport ship Silvio Scaroni (1367 BRT) HMS Torbay sunk northwest of Scyros at 39 ° 10 '  N , 25 ° 20'  O Italian Sailboat Gesu E Maria (238 BRT) with the deck gun.
June 15, 1941	HMS Thunderbolt attacks the German submarine U 557 unsuccessfully with torpedoes in the western North Atlantic at 42 ° 0 ′  N , 47 ° 0 ′  W.
June 27, 1941	HMS Triumph torpedoes and sunk near Marsa Matruh (Egypt) at 32 ° 5 '  N , 28 ° 47'  O the Italian submarine salpa (611 ts).
June 30, 1941	HMS Torbay sinks a sailing ship with artillery off Cape Malea .
July 2, 1941	HMS Torbay attacks a small Italian convoy of two destroyers and two transports northwest of Kea at 37 ° 41 ′  N , 24 ° 15 ′  E. The Italian transporter Citta di Tripoli (2933 GRT) is sunk. The second transport ship can avoid the torpedoes.
4th July 1941	HMS Torbay sinks two German sailing ships (a quay and a schooner ) with the deck gun in the Doro Strait between Andros and Euboea . Commander Anthony Miers has the castaways drifting in the water shot with Lewis machine guns.
July 5, 1941	HMS Tigris torpedoes and sunk in the Bay of Biscay west of Bordeaux at 45 ° 0 '  N , 4 ° 0'  W Italian submarine Michele Bianchi . HMS Torbay torpedoes and sunk south of the Greek island Mykonos at 37 ° 21 '  N , 25 ° 20'  O the Italian submarine Jantina (599 ts).
July 6, 1941	HMS Triumph sinks the Italian freighter Ninfea (607 GRT) and the Italian tug Dante de Lutti (266 GRT) in a lengthy artillery duel . The submarine is also damaged in the battle and has to return to base.
July 8, 1941	HMS Torbay sinks the German schooner L XIV with artillery east of Kythira .
July 9, 1941	HMS Torbay sinks the German sailing ships L V , L VI and L XII ten nautical miles north of Andikythira . The ships are partially boarded and destroyed with explosive charges. Commander Miers orders the prisoners of war to be shot again . After the boarding party refused to carry out the order to murder, he forced the order to be carried out with the pistol drawn under threat of immediate shooting for non-compliance . A few hours later at 37 ° 30 '  N , 24 ° 16'  O Italian tanker Strombo (5232 BRT) torpedoes. The tanker was declared a total loss on August 23, 1941.
July 10, 1941	HMS Tuna unsuccessfully attacked a submerged ASDIC target with two torpedoes in southwestern Biscay at 46 ° 0 ′  N , 9 ° 40 ′  W. There is no information about Axis submarines in this area of ​​the sea that day, so it is likely (if at all) that an overwater target was attacked.
July 13, 1941	HMS Taku torpedoed and sank the Italian passenger and cargo ship Caldea (2703 GRT) ten nautical miles off Benghazi .
July 15, 1941	HMS Taku sinks the Italian minesweeper Vincenso P. (270 GRT) 25 nautical miles southeast of Auegia (Libya )
July 17, 1941	HMS Thrasher attacks the French fishing vessel Virgio Fidelis (129 GRT) with on-board artillery in the Bay of Biscay off San Sebastian and severely damages it. The Virgo Fidelis then stranded and was abandoned as a total loss.
July 19, 1941	HMS Tuna attacks the German tanker Benno (8306 GRT) with six torpedoes 60 nautical miles northwest of the Gironde . Although six detonations were subsequently heard , the tanker led by minesweepers M 18 , M 25 , M 27 and M 30 was not hit. The former Norwegian tanker Ole Jacob had been picked up nine months earlier on November 10, 1940 by the German merchant sturgeon cruiser Atlantis in the Bay of Bengal .
July 22, 1941	HMS Tetrarch reports the damage to a sailing ship off Karlovasi with the deck gun.
July 25, 1941	HMS Tetrarch unsuccessfully attacks the Greek tanker Olympos (5216 GRT) on the Greek island of Gaidero .
July 27, 1941	HMS Tetrarch sank the Italian sailing ship Nicita with the deck gun five nautical miles south of the Greek island of Kos .
July 30, 1941	The Royal Navy puts HMS Trusty into service.
August 12, 1941	HMS Torbay attacks an Italian convoy with four torpedoes four nautical miles west of Benghazi. The attacked transport ships Bosforo (3648 GRT) and Iseo (2366 GRT) are missed. The submarine is then attacked with depth charges by the torpedo boat Partenope .
August 15, 1941	HMS Taku reaches 90 nautical miles north-east from Bengasi at 33 ° 16 '  N , 21 ° 16'  O German transporter Menes (5609 BRT) unsuccessfully with four torpedoes. HMS Thrasher unsuccessfully attacks the German transporter Ankara (4768 GRT) with four torpedoes off Cape Sounion (Greece) .
August 16, 1941	HMS Talisman uses 140 nautical miles north-west of Alexandria at 32 ° 41 '  N , 27 ° 35'  O erroneously British submarine HMS Otus with torpedoes, but target. HMS Torbay sinks the sailing ship Evangelista (28 GRT) with explosive charges off Cape Tenaro .
August 17, 1941	HMS Tigris torpedoes and sunk before Sværholt (Norway) at 71 ° 3 '  N , 26 ° 43'  O Norwegian cargo and passenger vessel Haakon Jarl (1492 BRT).
August 19, 1941	HMS Trident damaged east of Havøysund at 71 ° 1 '  N , 24 ° 34'  O German transporter Levante (4769 BRT).
August 20, 1941	HMS Thrasher sinks the Greek sailing ship San Stefano with artillery off Cape Malea (Greece) .
August 22, 1941	HMS Trident torpedoes and sunk in Kvaenangenfjord at 70 ° 12 '  N , 21 ° 5'  O the German transport ship Prussia (3030 BRT).
August 23, 1941	HMS Tetrarch sank the Italian sailing ships V 72 / Fratelli Garre (413 GRT) and V 113 / Fransesco Garre (399 GRT) with the on-board gun in the Große Syrte .
August 26, 1941	HMS Triumph unsuccessfully attacks the Italian heavy cruiser Bolzano north of Messina (Sicily) with two torpedoes. The Royal Navy puts HMS Thorn into service.
August 27, 1941	HMS Traveler is launched.
August 30, 1941	HMS Talisman reports that it has sunk two sailing ships north of Benghazi. HMS Trident torpedoes and sunk near Lopphavet at 70 ° 35 '  N , 21 ° 45'  O German transporter Donau II (2931 BRT) and Bahia Laura (8561 BRT).
September 3, 1941	HMS Trident is attacked by the German submarine U 566 on the march back to its base in Poljarny in northern Russia , but not hit.
September 7, 1941	HMS Thunderbolt torpedoed and sunk the Italian freighter Sirena (974 GRT) 50 nautical miles west of Benghazi .
September 8, 1941	HMS Trespasser (P312, ex P92) is laid down at Vickers-Armstrong in Barrow-in-Furness.
September 10, 1941	HMS Thunderbolt sinks the Italian auxiliary patrol boat V 224 / Svan I (388 GRT) with the deck gun in the Große Syrte . HMS Torbay torpedoed the German freighter Norburg (2392 GRT) in the port of Heraklion . The ship ran aground, but was later repaired.
September 11, 1941	HMS Thunderbolt torpedoed and sunk the German freighter Livorno (1829 GRT) 35 nautical miles west-southwest of Benghazi at 31 ° 58 ′  N , 19 ° 23 ′  E.
September 13, 1941	HMS Tigris torpedoed and sunk off the island of Rolvsøy about 11 nautical miles northeast of Hammerfest at 70 ° 50 '0 "  N , 23 ° 57' 0"  O the Norwegian Hurtigruten passenger liner Richard With (905 BRT)
September 14, 1941	HMS Thunderbolt unsuccessfully attacks the German freighter Tinos (2826 GRT) with three torpedoes 30 nautical miles northwest of Benghazi .
September 15, 1941	HMS Tigris unsuccessfully attacks the German freighter Bessheim (1774 GRT) with four torpedoes off Lopphavet (Norway) .
September 17, 1941	HMS Tigris prejudge Lopphavet (Norway) at 70 ° 21 '  N , 21 ° 10'  O a German convoy to. Four torpedoes are fired against a transporter estimated at 3000 GRT, but miss their target.
September 18, 1941	HMS Triumph torpedoed and damaged the Italian tanker Ardor (8960 GRT) off Capo Colonna (Calabria ). The damaged ship is towed to Crotone .
September 20, 1941	HMS Thule (P325) and HMS Tudor (P326) are keeled at Devonport Dockyard ( Plymouth ).
September 23, 1941	HMS Triumph torpedoed and sank the German freighter Luvsee (2373 GRT) northeast of Šibenik .
September 24, 1941	HMS Triumph damages the Italian freighter Poseidone and the freighter Sidamo (2384 GRT) at Ortona .
September 26, 1941	HMS Tetrarch torpedoes and sunk in the Aegean 18 nautical miles south of the Greek island Milos at 36 ° 21 '  N , 24 ° 23'  O Italian freighter Citta di Bastia (2499 BRT). HMS Tigris torpedoed the German auxiliary submarine fighter UJ 1201 (527 GRT) in front of the Rolvsoy Fjord . The German warship was badly damaged and was not put back into service until April 1944.
September 27, 1941	HMS Tetrarch sinks the Greek sailing ship Panagiotis Kramottos (120 GRT) with the deck gun southwest of Milos .
September 28, 1941	HMS Tetrarch attacks the German freighter Yalova (3751 GRT) with torpedoes in the Aegean Sea south of the Greek island of Agios Giorgios and damages the ship so badly that it has to be put aground.
September 30, 1941	HMS Trident engages four nautical mile northwest of Havøysund at 71 ° 3 '  N , 24 ° 34'  O the German hospital ship Birka unsuccessful with three torpedoes. HMS Taurus (P339, ex P93, P313, later Dutch: Dolfijn ) is laid down at Vickers-Armstrong in Barrow-in-Furness.
October 1, 1941	HMS Talisman attacks an Italian convoy with torpedoes in the Zea Canal and misses its main target, the Italian freighter Lauretta (938 GRT). After the attack, the submarine is intensively attacked with depth charges by the escorting Italian torpedo boat Libra .
October 3, 1941	HMS Talisman destroys the wreckage of the German freighter Yalova (3751 GRT) which was stranded as a result of an attack by HMS Tetrarch off Agios Giorgios .
October 4, 1941	HMS Talisman torpedoes and sunk northeast of Kea at 37 ° 45 '  N , 24 ° 35'  O French passenger ship Gautier (8194 BRT).
October 7, 1941	HMS Talisman attacked the German transporter Salzburg (1742 GRT) with torpedoes to the west-northwest of the Greek island of Kasos at 35 ° 31 '  N , 26 ° 25'  E.
October 10, 1941	HMS thunderbolt sunk twelve miles north-east of Cape Sidero (Crete) at 35 ° 31 '  N , 26 ° 25'  O Italian Sailboat Citta di Simi (25 BRT) with the deck gun.
October 14, 1941	HMS Tigris attacked before Laksfjord at 71 ° 3 '  N , 27 ° 10'  O a German convoy. The Norwegian freighters Mimona (1147 GRT), Tugela (5559 GRT) and Havbris (1316 GRT) are each unsuccessfully attacked with one torpedo.
October 23, 1941	HMS Triumph sinks the Greek sailing ships Panagiotis and Aghia Paraskeva with the deck gun in the Gulf of Petalii (Greece) . HMS Truant torpedoes and sunk in the street of Otranto at 39 ° 52 '  N , 19 ° 0'  O the German cargo ship Virginia S. (3885 BRT). The Italian freighter Arborea (4959 GRT) attacked in the same attack was missed.
October 25, 1941	HMS Triumph torpedoes and sunk in Saronic three nautical miles north-west of the Greek island Patroklou at 37 ° 41 '  N , 23 ° 53'  O Italian freighter Monro (6703 BRT).
October 28, 1941	HMS Thrasher sinks the Italian sailing ship Esperia (384 GRT) with the deck gun northeast of Benghazi .
October 30, 1941	HMS Tireless (P327) is keeled at Portsmouth Dockyard in Portsmouth.
October 31, 1941	HMS Truant torpedoes and sinks the Italian tanker Meteor (1685 GRT) two nautical miles southeast of Punta Penne ( Ortona , Italy ).
November 2, 1941	HMS Tetrarch (N77) leaves its base in Malta on October 26th with the destination Gibraltar , where it is expected on November 2nd but never arrives. The submarine probably ran into a sea mine in the Strait of Sicily . There were no survivors.
November 3, 1941	HMS Trident torpedoed and sank in the Porsangerfjord at 70 ° 58 ′  N , 26 ° 8 ′  E the German auxiliary U-Jäger UJ 1213 / Rau IV (354 GRT) and the German transport ship Altkirch (4713 GRT).
November 6, 1941	HMS Token (P328) is keeled at Portsmouth Dockyard in Portsmouth.
November 7, 1941	HMS Trident engages the north Laksefjord at 71 ° 6 '  N , 26 ° 57'  O German mine hunter MRS 3 / Bali unsuccessful with three torpedoes.
November 13, 1941	HMS Tactician (P314) is laid down at Vickers-Armstrong in Barrow-in-Furness.
November 24, 1941	HMS Triumph torpedoed and sunk the Italian tug Hercules (632 GRT) in the port of Heraklion (Crete). On the same day, the German freighter Norburg (2392 GRT) is damaged.
November 25, 1941	HMS Thrasher torpedoes and sunk 20 nautical miles east of Brindisi (Italy) at 40 ° 37 '  N , 18 ° 27'  O Italian freighter Attilio Deffenu (3510 BRT). HMS Thunderbolt sinks the German sailing ship L VII (300 GRT) with the deck gun off Kythira .
December 2, 1941	The Royal Navy puts HMS Turbulent into service.
December 4, 1941	HMS Trusty attacks an Italian warship with torpedoes west of the Greek island of Zakynthos at 37 ° 46 ′  N , 20 ° 25 ′  E. The target was probably the Orsa torpedo boat . HMS Truculent (P315, ex P95) is laid down at Vickers-Armstrong in Barrow-in-Furness.
December 6, 1941	The Royal Navy puts HMS Tempest into service.
December 7, 1941	HMS Truant unsuccessfully attacks the German freighter Bellona (1297 GRT) with two torpedoes off Souda Bay ( Crete ) .
December 11, 1941	HMS Talisman torpedoes and sunk 60 nautical miles west-southwest of the ionic island Schiza at 36 ° 23 '  N , 20 ° 33'  O Italian cargo ship Calitea (4013 BRT). HMS Torbay sinks the Greek sailing ship Sofia (800 GRT) with the deck gun northwest of Souda Bay . HMS Truant engages north of Crete at 35 ° 29 '  N , 24 ° 11'  O Italian Torpedoboot Alcione with torpedoes. The Alcione is badly damaged, aground and later declared a total loss.
December 12, 1941	HMS Torbay sinks the Greek sailing ship P III with the deck gun northwest of Souda Bay .
December 15, 1941	HMS Torbay sinks three Greek sailing ships with artillery off Cape Methene.
December 22, 1941	HMS Torbay sinks a Greek sailing ship with artillery off Cape Methene.
December 23, 1941	HMS Torbay torpedoes the aground destroyer Aviere (1645 ts) in the port of Pylos . The Italian warship was hit and damaged on November 19, 1941 by the Polish submarine ORP Sokół . The aviere is then repaired. She was sunk by HMS Splendid on December 17, 1942 off Bizerta (Tunisia) .
December 26, 1941	HMS Triumph leaves Alexandria with the aim of landing special forces near the Greek capital Athens and then patrolling the Aegean Sea. The Triumph reports the landing of the units on December 30th. Since then there have been no reports of the submarine. Presumably it runs on the island of Milos on an Italian sea mine. The Royal Navy reports the boat missing on January 14, 1942. There are no survivors.
December 28, 1941	HMS Templar (P316, ex P96) is laid down at Vickers-Armstrong in Barrow-in-Furness.
December 30, 1941	HMS Thorn torpedoes and sunk five nautical miles west of Cape Dukato at 38 ° 35 '  N , 10 ° 27'  O German tanker Campina (3032 BRT).

1942

In 1942 twelve more units were laid down and seven put into service. Five submarines are lost in the Mediterranean. After the start of the Pacific War in December 1941, the first units were ordered to Asia and used in the coastal waters of Malaya and the Dutch East Indies. The main battle area of ​​the submarines remains the entire Mediterranean. The American landings in French North Africa will win new bases in North Africa from November.

date	comment
January 2, 1942	HMS Thunderbolt torpedoed and damaged the Italian freighter Anna Capano (1216 GRT) off Argostoli .
January 4, 1942	HMS Thunderbolt sinks the Italian auxiliary minesweeper R 195 / Nuovo San Pietro (32 BRT) with the on-board gun off the Greek island of Kefalonia .
January 10, 1942	HMS Thrasher torpedoes and sunk 35 nautical miles north-east of Cape Dukato (Greece) at 38 ° 59 '  N , 19 ° 59'  O Italian freighter Fedora (5016 BRT).
January 14, 1942	The Royal Navy declares HMS Triumph missing.
January 28, 1942	HMS Thorn torpedoes and sunk off Cape Planka (Yugoslavia) at 43 ° 30 '  N , 15 ° 55'  O Italian tanker Ninuccia (4583 BRT).
January 30, 1942	HMS Thorn sunk near Premantura at 44 ° 45 '  N , 13 ° 56'  O the Italian submarine Medusa (599 ts). HMS Thunderbolt unsuccessfully attacks the Italian torpedo boat Solferino in the Ionian Sea with four torpedoes.
February 1, 1942	HMS thunderbolt torpedoes and sunk six miles off Cape Dukato at 38 ° 40 '  N , 20 ° 30'  O Italian freighter Absirtea (4170 BRT).
February 3, 1942	Off Gheregambe, HMS Thunderbolt damaged the Italian auxiliary submarine fighter AS 80 / Lanciotto Piero (180 BRT) with the on-board gun.
February 8, 1942	HMS Thunderbolt damaged the Italian sailing ship Maria Grazia Siliato with on-board artillery twelve nautical miles east of Brindisi .
February 11, 1942	HMS Tradewind (P329) islaid downon the Chatham Dockyard .
February 13, 1942	HMS Tempest (N86) is forced to surface in the Gulf of Taranto 30 nautical miles northeast of Crotone at 39 ° 15 '  N , 17 ° 45'  E by the Italian torpedo boat Circe with depth charges and sinks shortly afterwards. The Italian attempt to tow the submarine fails.
February 16, 1942	HMS Thrasher unsuccessfully attacked the German transporter Arkadia (1756 BRT) with torpedoes off Souda Bay (Crete) .
February 19, 1942	HMS Truant attacks the Japanese light cruiser Nagara north of Bali ( Dutch East Indies ) unsuccessfully with six torpedoes.
February 23, 1942	HMS Trident attacks the two German heavy cruisers Prinz Eugen (14680 ts) and Admiral Scheer (13660 ts) west of Kristiansund with a total of seven torpedoes. The Prinz Eugen suffers hits and severe damage to the stern. The Admiral Scheer is missed.
February 27, 1942	HMS Torbay sinks the Italian transport ship Lido (1243 GRT) with torpedoes 15 nautical miles south of Antipaxe ( Corfu ) .
March 2, 1942	HMS Turbulent sinks the Greek sailing ships Prodromos and Aghios Apostolos with the deck gun in the Thermaic Gulf .
March 3, 1942	HMS Turbulent sinks the Greek sailing ships Aghios Yonizov , Evangelista and Aghios Dyonysios with the deck gun in the Thermaic Gulf .
March 5, 1942	HMS Thorn sinks the Italian auxiliary patrol boat AS 91 / Ottavia (259 BRT) with the deck gun off Kefalonia . HMS Torbay torpedoed and sank the Italian transport ship Maddalena G. (5212 GRT) off Corfu . HMS P311 and HMS Trooper are launched.
March 6, 1942	HMS thunderbolt engages southwest of Crete at 34 ° 26 '  N , 23 ° 22'  O the German submarine U 431 unsuccessfully.
March 13, 1942	HMS Turbulent sinks the Greek sailing ship Aghia Traio with on-board artillery off Mykonos .
March 25, 1942	HMS Tally-Ho (P317, ex P97) is laid down at Vickers-Armstrong in Barrow-in-Furness.
April 1, 1942	HMS Truant torpedoes and sunk in Malaya road at 5 ° 42 '  N , 98 ° 57'  O Japanese cargo ships Yae Maru (6780 BRT) and Shunsei Maru (4939 BRT).
April 7, 1942	HMS Turbulent sinks the Italian freighter Rosa M. (271 GRT) with the deck gun off Kotor (Yugoslavia) .
April 9, 1942	HMS Thrasher torpedoes and sunk 20 nautical miles west-southwest of Benghazi at 31 ° 49 '  N , 19 ° 42'  O Italian freighter Gala (1029 BRT). HMS Torbay sinks the Italian auxiliary patrol boat R113 / Avanguardista (34 BRT) with the deck gun off Patras .
April 10, 1942	The Royal Navy puts HMS Traveler into service.
April 11, 1942	HMS Torbay sinks the Italian sailing ship Gesu Crocifisso (137 GRT) with the on-board gun to the northwest of Corfu .
April 12, 1942	HMS Turbulent attacked a submarine unsuccessfully with torpedoes off Fiume .
April 13, 1942	HMS Thrasher torpedoes and sunk southwest of Benghazi at 31 ° 26 '  N , 18 ° 56'  O German military transport Atlas (2297 BRT). The Italian tug Pilo 210 (30 GRT) is sunk with artillery on board in the same sea area .
April 14, 1942	HMS Turbulent sinks the Italian sailing ship Franco (around 200 GRT) with the deck gun off Šibenik (Yugoslavia) .
April 16, 1942	HMS Turbulent torpedoes and sunk before Brindisi at 40 ° 50 '  N , 17 ° 37'  O Italian freighter Delia (5406 BRT).
April 18, 1942	HMS Torbay torpedoes and sunk 50 nautical miles east-southeast of Capo Colonna (Italy) at 38 ° 52 '  N , 18 ° 15'  O German military transport Bellona (1297 BRT).
April 19, 1942	HMS Thrasher attacks the German lighter F 184 west of Derna (Libya) at 32 ° 53 ′  N , 22 ° 23 ′  E with onboard artillery . As a result of the German defensive fire, the submarine had to break off the attack. HMS Torbay sunk north of Crete at 36 ° 36 '  N , 24 ° 15'  O German auxiliary U-Hunter 19 V 2 / Delpa II (170 BRT) with the deck gun.
April 20, 1942	HMS Trident torpedoes and sunk in Svefjord at 64 ° 38 '  N , 10 ° 49'  O German transporter Hödur (5368 BRT).
May 7, 1942	HMS Thorn unsuccessfully attacked an Italian convoy with four torpedoes 180 nautical miles northwest of Benghazi at 34 ° 34 '  N , 17 ° 56'  E.
May 9, 1942	HMS Trenchant (P331) islaid downon the Chatham Dockyard .
May 14, 1942	HMS Turbulent sinks the Italian sailing ship San Giusto (243 GRT) ten nautical miles from Apollonia (Greece) with on-board artillery .
May 18, 1942	HMS Turbulent torpedoes and sunk west of Benghazi at 32 ° 47 '  N , 18 ° 51'  O Italian freighter Bolsena (2384 BRT).
May 19, 1942	HMS Thrasher torpedoed and sank five nautical miles northwest of Monopoli (Italy) at 41 ° 1 ′  N , 17 ° 16 ′  E, the Italian freighter Penelope (1160 GRT).
May 29, 1942	HMS Turbulent torpedoes and sunk 70 nautical miles north-west of Benghazi at 33 ° 7 '  N , 19 ° 28'  O Italian destroyer Emanuelle Pessagno (1917 ts) and the Italian cargo ship Capo ARMA (3172 BRT). An attack on the Italian freighter Anna Maria Gualdi (3289 GRT) fails. HMS Trespasser is launched.
June 2, 1942	HMS Turbulent engages at 32 ° 48 '  N , 25 ° 12'  O twice the German submarine U 81 unsuccessfully with a total of seven torpedoes.
June 4, 1942	HMS Trusty torpedoes and sunk in Malaya road at 7 ° 14 '  N , 98 ° 6'  O Japanese freighter Toyohashi Maru (7031 BRT).
June 6, 1942	HMS Tantalus (P318) is laid down at Vickers-Armstrong in Barrow-in-Furness.
June 23, 1942	HMS Thrasher torpedoed and sunk the Italian transporter Sant Antonio (1480 GRT) in the Great Syrte at 31 ° 53 ′  N , 16 ° 35 ′  E.
June 24, 1942	HMS Turbulent torpedoed and sunk the Italian freighter Regulus (1085 GRT) five nautical miles west of Ghimenes in the Great Syrte .
June 27, 1942	HMS Taurus is launched.
June 29, 1942	HMS Thrasher torpedoed and sank north of Tobruk (Libya) at 33 ° 30 ′  N , 23 ° 30 ′  E, the Italian sloop Diana (1568 GRT).
July 3, 1942	HMS Truant torpedoes and sunk in the Malay road at 5 ° 42 '  N , 98 ° 57'  O Japanese military transport Tamon Maru No. 1 (3019 GRT).
4th July 1942	HMS Turbulent attacked the Italian freighter Nino Bixio (7137 GRT) and the German freighter Ankara (4768 GRT) with torpedoes off Benghazi . HMS Tantivy (P319, ex P99) is laid down at Vickers-Armstrong in Barrow-in-Furness.
July 26, 1942	HMS Thrasher , before Port Said mistakenly by a British (Egypt) Swordfish - torpedo bombers attacked and damaged. The submarine has to go to Alexandria for repairs for more than a month.
July 28, 1942	HMS Traveler attacks the Italian freighter Ezilda Croce (1230 GRT) with torpedoes in the Strait of Otranto .
July 29, 1942	HMS Tactician is launched.
July 30, 1942	HMS Traveler attacks the Italian small cruiser Cattaro (ex Yugoslavian: Dalmacija ) unsuccessfully with six torpedoes off Pola (Yugoslavia) .
August 3, 1942	HMS Thorn torpedoed and sank the Italian transporter Monviso (5322 GRT) eight nautical miles off Sidi Sueicha (Libya ).
August 5, 1942	HMS Traveler reports the attack on an unidentified submarine in the Adriatic at 42 ° 48 '  N , 14 ° 31'  E.
August 6, 1942	On August 6, HMS Thorn attacked an Italian convoy 30 nautical miles southwest of the Greek island of Gavdos at 34 ° 25 '  N , 22 ° 36'  E. The submarine is discovered and attacked by an airplane. The Italian torpedo boat Pegaso then attacks several times with depth charges, which is likely to result in the submerged Thorn being sunk. The submarine is declared missing on August 11th. There are no survivors. HMS Turbulent destroys the wreck of the stranded Italian destroyer Strale (1225 ts) with torpedoes off Cap Bon .
August 7, 1942	HMS Traveler reports the attack on an unidentified submarine in the Strait of Otranto. The Royal Navy puts HMS P311 into service.
August 11, 1942	The Royal Navy declares HMS Thorn (N11) missing.
August 15, 1942	HMS Taku reaches 90 nautical miles north-east from Bengasi at 33 ° 16 '  N , 21 ° 16'  O German transporter Menes (5609 BRT) unsuccessfully with four torpedoes.
August 17, 1942	HMS Turbulent torpedoes and damaged twelve miles south west of Pylos at 36 ° 35 '  N , 21 ° 34'  O Italian transporter Nino Bixio (7137 BRT). There are over 2000 prisoners of war on board the Italian ship, of whom over 300 were killed in the attack.
August 19, 1942	HMS Turbulent torpedoed and damaged the Italian tanker Pozarica (7751 GRT) off Andikythira .
August 25, 1942	HMS Telemachus (P321) is laid down at Vickers-Armstrong in Barrow-in-Furness.
August 29, 1942	The Royal Navy puts HMS Trooper into service.
September 4, 1942	HMS Thrasher torpedoes and sunk 40 nautical miles north of Tobruk at 32 ° 44 '  N , 24 ° 11'  O Italian freighter Padenna (1589 BRT).
September 5, 1942	HMS Traveler torpedoed and sank the Italian freighter Albachiara (1245 GRT) 15 nautical miles off Ras-El-Tin (Libya ).
September 10, 1942	HMS Talisman leaves the base in Gibraltar on September 10, 1942. On September 15, the submarine reports the sighting of a submarine off the Algerian coast. The Talisman probably ran into a sea mine in the Strait of Sicily on September 17th. The submarine was declared missing on September 18, 1942.
September 12, 1942	HMS Truculent is launched.
September 18, 1942	The Royal Navy declares HMS Talisman (N78) missing.
September 23, 1942	HMS Tudor is launched.
September 25, 1942	The Royal Navy puts HMS Trespasser into service.
October 8, 1942	HMS Turbulent sinks the German freighter Kreta (1013 GRT) with the deck gun off Ras al Hilal (Libya) .
October 9, 1942	HMS Traveler engages west of Crete at 35 ° 45 '  N , 23 ° 13'  O Italian tanker PROSERPINE (4870 BRT, ex double. Beauce ) and the Italian Torpedoboote Castore and Ciclone unsuccessful with three torpedoes.
October 12, 1942	HMS Thrasher sunk with the deck gun 15 nautical miles east of Cape Drepano ( Chalkidiki ) at 39 ° 56 '  N , 24 ° 17'  O a Greek sailing vessel.
October 13, 1942	HMS Talent (I) (P322, later Dutch: Zwaardvisch ) is laid down at Vickers-Armstrong in Barrow-in-Furness. HMS Thrasher sunk ten nautical miles south west of Cape Pinnes ( Athos ) at 40 ° 1 '  N , 24 ° 10'  O a sailing vessel with a deck gun.
October 19, 1942	HMS Thrasher sunk before Stampalia (Greece) at 36 ° 43 '  N , 26 ° 41'  O Italian tractor Roma (130 BRT) with the deck gun. HMS Terrapin (P323) is laid down at Vickers-Armstrong in Barrow-in-Furness.
October 20, 1942	HMS Thrasher torpedoes and sunk between the Greek islands Rhodes and Simi at 36 ° 26 '  N , 27 ° 54'  O Italian freighter Lero (1980 BRT).
October 22, 1942	HMS Totem (P352, later Israeli: Dakar ) is laid on the Devonport Dockyard (Plymouth). HMS Thule is launched.
October 24, 1942	HMS Taku sunk south of Kos at 36 ° 23 '  N , 27 ° 0'  O a small Greek sailing vessel with the deck gun.
October 25, 1942	HMS Taku attacks the Italian tanker Arca (2238 GRT) with a torpedo off Chios (Greece) , but misses the target.
October 26, 1942	HMS Taku engages southwest of Chios at 38 ° 4 '  N , 25 ° 27'  O again Arca and sunk they this time. HMS Thorough (P324) is laid down at Vickers-Armstrong in Barrow-in-Furness. HMS Templar is launched.
October 27, 1942	HMS Taku sank the Greek sailor Lora (121 GRT) with on-board artillery off Limnos (Greece ).
October 31, 1942	HMS Taku reaches 10 nautical miles south west of Cape Sounio (Greece) at 37 ° 30 '  N , 24 ° 3'  O Italian tanker Cerere (1267 BRT) unsuccessfully with four torpedoes.
November 3, 1942	The Royal Navy puts HMS Taurus into service.
November 5, 1942	HMS Truncheon (P353, later Israeli: Dolphin ) is laid on the Devonport Dockyard (Plymouth).
November 10, 1942	HMS Tiptoe (P332) is laid down at Vickers-Armstrong in Barrow-in-Furness.
November 11, 1942	HMS Turbulent torpedoed and sank ten nautical miles northeast of Capo Carbonara (Sardinia) at 39 ° 10 ′  N , 9 ° 39 ′  E the German auxiliary submarine tender Benghazi (1554 GRT).
November 18, 1942	HMS Trusty torpedoes and damaged near Penang ( Malaya ) at 6 ° 21 '  N , 99 ° 5'  O Japanese troop transport Columbia Maru (5617 BRT).
November 28, 1942	HMS Traveler leaves its base in Malta to patrol the Gulf of Taranto. She is also supposed to scout out the port of Taranto . She is believed to be lost on December 8th as a result of a mine hit and declared missing on December 12th. There are no survivors.
November 29, 1942	The Royal Navy puts HMS Tactician into service.
December 6, 1942	HMS Tigris torpedoes and sunk before Algeria at 38 ° 10 '  N , 8 ° 35'  O the Italian submarine Porfido .
December 7, 1942	HMS Tuna , a British special forces unit, lands in the Gironde estuary. During the operation known as Operation Frankton , six German ships are mined in the port of Bordeaux . Only two of the twelve landed soldiers survived the special mission.
December 11, 1942	HMS Tradewind is launched.
December 12, 1942	The Royal Navy declares HMS Traveler (N48) missing. Presumably, the submarine ran into an Italian sea mine in the Gulf of Taranto on December 8th.
December 14, 1942	HMS Taku sunk five miles north of the Greek island Macrosini at 37 ° 52 '  N , 24 ° 6'  O Italian tanker Dolphin (5322 BRT) with torpedoes.
December 22, 1942	HMS Taku sunk northwest of the channel of Potidea at 40 ° 13 '  N , 23 ° 19'  O Greek Sailboat Niki (150 BRT) with the deck gun.
December 23, 1942	HMS Tally-Ho is launched.
December 28, 1942	HMS P311 leaves the base in Malta. The submarine carries two chariot one-man submarines. The last position report is received three days later. The P311 was probably lost to sea mines around January 2, 1943.
December 29, 1942	HMS Turbulent torpedoes and sunk east of Capo Ferrato (Sardinia) at 39 ° 17 '  N , 9 ° 41'  O Italian freighter Marte (5290 BRT).
December 31, 1942	HMS P311 sends its last position report at 38 ° 10 ′  N , 11 ° 30 ′  E. HMS Trump (P333) is laid down at Vickers-Armstrong in Barrow-in-Furness. The Royal Navy puts HMS Truculent into service.

1943

In 1943 seven units were laid down, but two of them were no longer put into service. Seven submarines are put into service and five are lost. One of the newly commissioned boats will be handed over directly to the Dutch Royal Navy , which will use it in East Asia. In May the last Axis troops in North Africa surrender. The Allies land in Sicily in July, followed by an invasion of mainland Italy and the Italian surrender in September. The main focus of the British submarines will be shifted more and more to Asia towards the end of the year.

date	comment
January 3, 1943	As part of Operation Principle, HMS Thunderbolt and HMS Trooper are transporting several manned Chariot torpedoes off the port of Palermo (Sicily), which are sinking the Italian light cruiser Ulpio Traiano there . HMS P311 was also intended for the action, but was lost on the approach.
January 8, 1943	The Royal Navy declares HMS P311 missing.
January 10, 1943	HMS Tribune torpedoed the French freighter Dalny (6672 GRT) sailing under the German flag 15 nautical miles off San Remo (Italy ). The severely hit ship is then stranded by its crew in order to avoid a total loss.
January 11, 1943	HMS Tribune attacks the now stranded Dalny again with torpedoes near Capo Cervo (Sardinia) and damages her. HMS Turbulent torpedoed and sank the Italian freighter Vittoria Beraldo (547 GRT) off Kotor .
January 21, 1943	HMS Tigris torpedoes and sunk in the street of Otranto 25 nautical miles west of Sazan ( Albania ) at 40 ° 32 '  N , 18 ° 45'  O Italian freighter Citta di Genova (5413 BRT).
February 1, 1943	HMS Turbulent torpedoes and sunk off Cape San Vito (Sicily) at 38 ° 13 '  N , 12 ° 50'  O Italian freighter Pozzuoli (5345 BRT).
February 5, 1943	HMS Turbulent torpedoed and sank the Italian tanker Utilitas (5342 GRT) off Palermo .
February 11, 1943	HMS Torbay sinks the Danish merchant ship Grete (1563 GRT) off Cape Oropesa
February 13, 1943	HMS Thunderbolt sank the Italian minesweeper number one with on-board artillery off the Croatian island of Dugi Otok . 112 / Mafalda (364 GRT)
February 15, 1943	The Royal Navy puts HMS Templar into service.
February 18, 1943	HMS thunderbolt damaged northwest of Pola at 45 ° 2 '  N , 13 ° 35'  O Italian auxiliary patrol boat F 95 / San Giorgio (364 BRT) with the deck gun.
February 20, 1943	HMS Thunderbolt sinks an Italian sailing ship with the deck gun off Bari .
February 23, 1943	HMS Turbulent leaves the base in Algiers . The boat does not return and is declared missing on March 23rd.
February 24, 1943	HMS Tantalus is launched.
February 25, 1943	HMS Torbay damaged the Italian auxiliary minesweeper Monte Argentario (80 GRT) with the deck gun off Ajaccio .
February 26, 1943	HMS Torbay torpedoed and sunk the Spanish freighter Juan de Astigarraga (3561 GRT) off San Remo . On the same day, the French freighter Oasis (1327 GRT) was sunk 30 nautical miles south of Cape Mele at 43 ° 27 '  N , 8 ° 8'  E.
February 27, 1943	HMS Torbay sunk with artillery board 35 nautical miles south west of La Spezia at 43 ° 37 '  N , 9 ° 25'  O Italian auxiliary patrol boat V 276 / Baicin (173 BRT).
February 28, 1943	HMS Torbay sinks the Italian transport ship Ischia (5101 GRT) with torpedoes off Portofino (Italy) .
March 1, 1943	HMS Turbulent sinks the Italian freighter San Vincenzo (865 GRT) off Paola (Italy ).
March 2, 1943	HMS Taurus sinks the French freighter Clairette with the deck gun off Capo Ferrato (Sardinia) .
March 3, 1943	HMS Torbay sinks the Italian sailing ship Gesù Giuseppe E Maria (64 GRT) with the on-board gun off Milazzo (Sicily) .
March 6, 1943	HMS Taurus torpedoed and sunk the Spanish freighter Bartolo (3120 GRT) off Marseille (southern France ).
March 9, 1943	HMS Taciturn (P334) is laid down at Vickers-Armstrong in Barrow-in-Furness.
March 10, 1943	HMS Tigris leaves the base in Malta on February 18 and is expected in Algiers on March 10, 1943, where the submarine never appears. The Royal Navy reports the Tigris as missing on March 10, 1943. The Tigris was probably sunk six nautical miles southeast of Capri by the German submarine fighter UJ 2210 on February 27 . There were no survivors. HMS Trooper torpedoes and sinks the Italian tanker Rosarion (5468 GRT) four nautical miles off Punta Milazzo (Sicily ). HMS Taurus torpedoed and sunk the Italian freighter Derna (1769 BRT) with the deck gun off Sète (southern France) .
March 12, 1943	HMS Thunderbolt torpedoed and sank the French (in German service) freighter Esterel (3100 GRT) off Cape San Vito . HMS Turbulent is likely to be sunk by Italian torpedo boats with depth charges off the Maddalena Islands . According to an alternative theory, the submarine was lost in a mine hit. There were no survivors.
March 13, 1943	HMS Taurus sinks the French tug Ghrib (82 GRT) and two lighters with the deck gun off Cassis (southern France) .
March 14, 1943	HMS Thunderbolt is sunk by the Italian corvette Cigogna off San Vito lo Capo . There are no survivors. The Royal Navy reports the submarine missing on March 28th.
March 15, 1943	HMS Trooper attacks the Italian freighter Belluno (4279 GRT, ex French Fort de France ) with four torpedoes 30 nautical miles south of Capri .
March 17, 1943	HMS Trooper torpedoed and sank the Italian freighter Forli (1525 GRT, ex French Sebaa ) south of Naples .
March 19, 1943	HMS Tireless and HMS Token are launched.
March 22, 1943	HMS Tribune torpedoed and damaged ten nautical miles northwest of Cape Suvero (Italy) at 39 ° 14 '  N , 15 ° 59'  O the German tanker President Mr. Schmidt (9103 BRT).
March 23, 1943	The Dutch Royal Navy puts the Zwaardvisch (ex HMS Talent (I) ) into service. The Royal Navy officially declares the HMS Turbulent (N98) missing.
March 24, 1943	HMS Trenchant is launched.
March 28, 1943	HMS Torbay torpedoes and sunk off Cape Scalea (Italy) at 39 ° 5 '  N , 15 ° 46'  O French freighter Lillios (3680 BRT). The Royal Navy reports the HMS Thunderbolt (ex HMS Thetis , N25) as missing. The submarine was sunk by an Italian corvette on March 14th.
March 29, 1943	HMS Tapir (P335, later Dutch: Zeehond ) is laid down at Vickers-Armstrong in Barrow-in-Furness.
March 30, 1943	HMS Tribune reaches 50 nautical miles north of Ustica at 39 ° 37 '  N , 13 ° 15'  O Italian freighter Benevento (5229 BRT) unsuccessfully with four torpedoes.
April 1, 1943	HMS Torbay sunk before Licosa at 40 ° 15 '  N , 14 ° 54'  O Italian fishing vehicle Madonna di Porto Salvo (21 BRT) with the deck gun.
April 3, 1943	HMS Trident unsuccessfully attacks a submarine off La Spezia with six torpedoes.
April 5, 1943	HMS Thor (P349) is laid down at Portsmouth Dockyard in Portsmouth, England. The submarine was not completed and was scrapped in 1946.
April 6, 1943	HMS Tantivy is launched.
April 7, 1943	HMS Tuna torpedoes and sunk northwest of Narvik at 69 ° 38 '  N , 5 ° 40'  W the German submarine U 644 .
April 8, 1943	HMS Tiara (P351) is keeled at Portsmouth Dockyard in Portsmouth. The submarine was not completed and was scrapped in 1947.
April 9, 1943	HMS Trident unsuccessfully attacks an Italian submarine near Corsica with two torpedoes.
April 11, 1943	HMS Torbay reports that it has sunk a sailing ship with the deck gun off Corfu.
April 12, 1943	The Royal Navy puts HMS Tally-Ho into service.
April 13, 1943	HMS Taurus sunk 30 nautical miles south-east of Bastia (Corsica) at 42 ° 19 '  N , 9 ° 53'  O Portuguese ship Santa Irene (520 BRT) with the deck gun.
April 14, 1943	HMS Trident engages south-east of Cape Mele at 43 ° 51 '  N , 8 ° 19'  O German auxiliary U-Hunter UJ 2202 with the deck gun, but achieved no struggle success. HMS Tuna unsuccessfully attacks the German submarine U 302 south of Jan Mayen with four torpedoes. HMS Taurus sunk off the east coast of Corsica at 42 ° 16 '  N , 9 ° 36'  O the small Italian tanker Alcione C. (521 BRT) with the deck gun.
April 15, 1943	HMS Taurus sunk 52 nautical miles south west of Civitavecchia (Italy) at 41 ° 32 '  N , 10 ° 47'  O Italian Sailboat Luigi (433 BRT) with the deck gun.
May 5, 1943	HMS Tactician sunk ten nautical miles west of Grosseto (Italy) at 42 ° 34 '  N , 10 ° 45'  O Italian auxiliary patrol boat V17 / Pia (385 BRT) with on-board artillery.
May 12, 1943	HMS Trident engages east of Cevrione (Corsica) at 42 ° 27 '  N , 9 ° 53'  O Italian transport ship Agnani (5718 BRT) unsuccessfully with six torpedoes.
May 14, 1943	HMS Trident engages northwest of Corsica at 43 ° 5 '  N , 8 ° 4'  O French passenger and cargo ship Cap Corse (2444 BRT) unsuccessfully with four torpedoes. (Italian sources give the coordinates 43 ° 3 '  N , 8 ° 3'  E. )
May 24, 1943	HMS Turpin (P354, later Israeli: Leviathan ) islaid downon the Chatham Dockyard (Chatham).
May 30, 1943	HMS Trespasser mistakenly attacks the carcass of a drifting dead whale with three torpedoes in the Golfe du Lion .
June 2, 1943	The Royal Navy puts HMS Tantalus into service.
June 3, 1943	HMS Taurus sunk in the Aegean at 38 ° 24 '  N , 24 ° 14'  O two sailboats with the deck gun.
June 4, 1943	HMS Truculent torpedoes and sunk northeast of the Faroe Islands at 64 ° 28 '  N , 3 ° 9'  W the German submarine U 308 .
June 6, 1943	HMS Taurus sunk west of Mytilene at 39 ° 25 '  N , 24 ° 43'  O a Greek sailing boat with the deck gun.
June 8, 1943	HMS Trespasser unsuccessfully attacked the German auxiliary submarine fighter UJ 6073 / Nimeth Allah off Toulon with six torpedoes.
June 11, 1943	HMS Taurus sank seven Greek sailing ships with the deck gun and another by ramming off Tilos .
June 12, 1943	HMS Tactician sinks the Italian sailing ship Bice (1459 GRT) with the deck gun five nautical miles northeast of Bari . HMS Tarn (P336, later Dutch: Tijgerhaai ) is laid down at Vickers-Armstrong in Barrow-in-Furness.
June 14, 1943	HMS Tactician torpedoed and damaged the Italian freighter Rosandra (8035 GRT) off the Albanian coast . The ship sinks the following day.
June 19, 1943	HMS Telemachus is launched.
June 27, 1943	HMS Trident sinks a sailing ship with the deck gun north of Crete.
July 2, 1943	HMS Trident sinks three sailing ships with the deck gun off Rhodes.
July 3, 1943	HMS Trident torpedoes and damaged west of Leros at 37 ° 3 '  N , 26 ° 7'  O Italian cargo ship Vesta (3351 BRT).
4th July 1943	HMS Trident sinks two sailing ships with the deck gun off Symi . One of the sunk ships is the Turkish (neutral) Sisman (73 GRT).
July 8, 1943	HMS Trident damaged the German patrol vehicle GA 41 / Tassia Christa with the on-board gun 20 nautical miles north of the Doro Canal . HMS Taurus torpedoed and damaged the Greek freighter Konstantinos Louloudis (4697 GRT) off Skyros . In addition, two Greek sailing ships are sunk with the deck gun.
July 9, 1943	HMS Taurus sinks four sailing ships with two torpedoes and artillery on board near Chios. Two more sailing ships are damaged.
July 12, 1943	HMS Taurus sinks the Greek transporter Romano (39 GRT) and twelve other sailing ships with the deck gun in the Thermaic Gulf .
July 13, 1943	HMS Trespasser sinks the Italian auxiliary patrol boat V8 / Filippo (242 GRT) 25 nautical miles south of Bastia with the deck gun.
July 17, 1943	HMS Torbay sinks the Italian sailing ship Pozzalo (127 GRT) five nautical miles west of Civitavecchia . HMS Talent (I) is launched.
July 18, 1943	HMS Torbay sank the Italian auxiliary patrol boat V 90 / San Girolamo (109 GRT) with the deck gun southeast of the island of Giglio .
July 23, 1943	HMS Torbay torpedoes and sunk before Civitavecchia at 42 ° 4 '  N , 11 ° 47'  O Italian ship Aderno (2609 BRT, ex British ardeola ).
July 25, 1943	The Royal Navy puts HMS Tantivy into service.
July 29, 1943	HMS Trooper torpedoes and sunk south of the road from Otranto at 39 ° 48 '  N , 18 ° 43'  O Italian transport submarine Pietro Micca (1371 ts).
August 29, 1943	HMS Trident attacks the Japanese cruiser Kashii in the Strait of Malacca with a fan of all bow torpedo tubes. The eight torpedoes miss the target.
August 31, 1943	HMS Torbay sinks the Italian sailing ship Columbo (15 GRT) with the deck gun 15 nautical miles west of Kos .
August 31, 1943	HMS Terrapin is launched.
September 2, 1943	HMS Torbay torpedoes and sunk before Paros at 37 ° 11 '  N , 25 ° 20'  O Italian transporter Versilia (591 BRT).
September 5, 1943	HMS Trooper sinks a sailing ship with the deck gun off the Greek island of Skiathos . The trooper reports the damage to two other enemy units.
September 23, 1943	HMS Thrasher and HMS Truculent drag along with four S-Class -U-boats six midget submarines of class X in front of the Alta Fjord in northern Norway, where as part of the operation source , the German battleships Tirpitz and Scharnhorst to be mined. The Tirpitz was badly damaged and was no longer operational until March 1944.
September 26, 1943	HMS Trooper leaves the base in Beirut, Lebanon to patrol the Aegean Sea off the Dodecanese . Since then there has been no news of the submarine. Presumably the trooper ran into a German sea mine near the Greek island of Leros . The submarine has been officially missing since October 17, 1943. There were no survivors.
September 28, 1943	HMS Totem is launched.
October 15, 1943	HMS Torbay sinks the Italian freighter Tarquinia (749 GRT) with torpedoes off Kalymnos and a Greek fishing vessel with the deck gun off Leros. After these attacks, the German submarine GA 45 attacked the submarine with five depth charges. Commander Clutterbuck lets the Torbay appear to attack the attacker with artillery, but this fails because the German ship also uses its on-board gun. The Torbay can escape undamaged.
October 16, 1943	HMS Torbay torpedoed the German troop transporter Kari (1925 GRT) and the Italian transporter Trapani (1855 GRT) east of Naxos at 36 ° 59 ′  N , 26 ° 10 ′  E. The Kari (ex French Ste. Collette , ex Norwegian Kari ) is sunk, the Trampani damaged. The Trampani was attacked and damaged by the British destroyer HMS Hursley and the Greek destroyer escort Miaoulis the night before. The ship is sunk the following night by the British destroyers HMS Penn and HMS Jervis .
October 17, 1943	The Royal Navy declares HMS Trooper (N91) missing. Presumably the submarine was lost in a mine hit.
October 18, 1943	The Royal Navy puts HMS Tradewind into service.
October 25, 1943	The Royal Navy puts HMS Telemachus into service.
October 26, 1943	HMS Thermopylae (P355) islaid downon the Chatham Dockyard .
October 30, 1943	HMS Thorough is launched.
November 10, 1943	HMS Tally Ho torpedoes and sunk in the northern Malaya road at 6 ° 12 '  N , 99 ° 25'  O Japanese transporter Kisogawa Maru (1914 BRT).
November 13, 1943	HMS Taurus torpedoes and sunk south of Penang (Malaya) at 5 ° 17 '  N , 100 ° 5'  O Japanese submarine I-34 .
November 21, 1943	HMS Torbay sunk west of Psathoura at 39 ° 30 '  N , 24 ° 10'  O a Greek sailing vessel.
November 22, 1943	HMS Torbay torpedoes and sunk north of Skiathos at 39 ° 24 '  N , 23 ° 24'  O a German Floating .
November 26, 1943	HMS Torbay unsuccessfully attacks the German freighter Salomea (751 GRT) with three torpedoes off Lemnos .
November 27, 1943	HMS Torbay torpedoes and sunk before Karlovasi at 37 ° 47 '  N , 26 ° 38'  O German troop transport Palma (2609 BRT).
November 29, 1943	HMS Tarn is launched.
December 25, 1943	HMS Torbay damages a sailing ship with the deck gun off Cape Stavros (Crete).

1944

In 1944 three units were laid down. The construction contracts for three more submarines are canceled. The Royal Navy puts ten newbuildings into service. There is no loss. The main focus has finally shifted to Asia. The submarines mine parts of the Malakka Strait and sink many small unprotected Japanese coastal transport ships. In addition, the British submarines are less active in the North Sea.

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January 11, 1944	HMS Tally Ho torpedoes and sunk ten nautical miles north-west of Penang at 5 ° 26 '  N , 99 ° 52'  O Japanese light cruiser Kuma
January 15, 1944	HMS Tally Ho torpedoes and sunk south of Port Blair ( Andaman Islands ) at 10 ° 3 '  N , 93 ° 5'  O Japanese military transport ryuko Maru (2963 BRT).
January 16, 1944	The Royal Navy puts HMS Tudor into service.
January 22, 1944	The Royal Navy puts HMS Terrapin into service.
January 26, 1944	HMS Torbay unsuccessfully attacks the German transporter Leda (4572 GRT) south of Amorgos with five torpedoes.
January 27, 1944	HMS Templar damaged in the Malay road at 4 ° 54 '  N , 98 ° 28'  O Japanese light cruiser Kitikami with two torpedoes.
January 31, 1944	HMS Torbay sinks a Greek sailing ship with the deck gun south of Lemnos.
February 6, 1944	HMS Taurus sinks a Japanese tug and a lighter with the deck gun southwest of Sumatra (Dutch East Indies).
February 7, 1944	HMS Taku sinks the German freighter Rheinhausen (6298 GRT) with torpedoes 20 nautical miles north of Stavanger (Norway) .
February 12, 1944	HMS Taku torpedoed the German freighter Harm Fritzen (4818 GRT) off Stavanger . The transport ship is badly damaged and runs aground, but can be recovered later.
February 13, 1944	HMS Taku sunk in Boknafjord eight nautical miles south of Skudeneshavn at 59 ° 8 '  N , 5 ° 24'  O German transporter Hans Bornhofen (2130 BRT) with torpedoes.
February 14, 1944	HMS Tally Ho torpedoes and sunk in the Malay road south of Penang at 4 ° 27 '  N , 100 ° 11'  O the German submarine UIT 23 (ex Italian: Reginaldo Giuliani ). There are 26 dead and 14 survivors.
February 18, 1944	HMS Trespasser torpedoes and damaged before Burma at 7 ° 55 '  N , 93 ° 3'  O Japanese auxiliary gunboat Eifuku Maru (3520 BRT) with the deck gun.
February 20, 1944	HMS Tactician attacks a Japanese submarine with five torpedoes north of Sumatra at 5 ° 53 '  N , 96 ° 46'  E.
February 21, 1944	HMS Tally Ho torpedoes and sunk in the Malay road at 4 ° 0 '  N , 101 ° 0'  O Japanese military transport Daigen Maru No. 6 (510 GRT).
February 22, 1944	HMS Truncheon is launched.
February 25, 1944	HMS Tiptoe is launched.
February 26, 1944	The Royal Navy puts HMS Trenchant into service.
February 28, 1944	HMS Tactician sinks a small Japanese unit off Penang.
March 1, 1944	The Royal Navy puts HMS Thorough into service.
March 24, 1944	HMS Taku reaches 25 nautical miles west of Namsos (Norway) at 64 ° 33 '  N , 10 ° 37'  O the convoy in the German Dr-139-Bo Norwegian ex-propelled cargo Moshill (2959 BRT) with five torpedoes unsuccessfully. HMS Terrapin attacked a German convoy off Egersund (Norway) and damaged the Schwabenland seaplane tender (8186 GRT) and the tanker Wörth (6256 GRT) with torpedoes. The Schwabenland is set on the ground. The Wörth is towed away.
March 25, 1944	HMS Trump is launched.
March 28, 1944	HMS Truculent torpedoes and sunk in the Malay road at 3 ° 38 '  N , 100 ° 50'  O Japanese military transport Yasushima Maru (1910 BRT).
April 1944	HMS Taku runs into a sea mine and is damaged.
April 1, 1944	HMS Truculent sunk the small Japanese unit Mantai with explosive charges in Malakka Street .
April 17, 1944	HMS Teredo (P338) is laid down at Vickers-Armstrong in Barrow-in-Furness.
April 18, 1944	HMS Taurus relocates sea mines off Penang. HMS Thor and HMS Tiara are launched. Both submarines will no longer be put into service and will be scrapped after the war.
April 19, 1944	HMS Tantalus sunk the Malay tug Kampung Besar with the deck gun in Malakka Street .
April 22, 1944	HMS Taurus sunk off the coast of Malaya at 7 ° 10 '  N , 99 ° 20'  O Japanese salvage ship Hokuan I-Go (558 BRT) and a tractor with the deck gun.
April 27, 1944	The Japanese submarine I-37 is south of Penang at 5 ° 3 '  N , 100 ° 12'  O damaged by a mine. The sea mine was likely relocated by HMS Taurus on April 18, 1944.
April 29, 1944	HMS Tantalus sinks the Malay ship Pulo Salanama with the deck gun in the Malakka Strait .
May 3, 1944	HMS Tantalus torpedoes and sunk 40 nautical miles south of Port Blair at 11 ° 0 '  N , 92 ° 0'  O Japanese military transport Amagi Maru (3165 BRT).
May 7, 1944	HMS Tantivy sinks a Siamese (Thai) sailing ship off the west coast of Siam ( Thailand ).
May 12, 1944	The Japanese transporter Kasumi Maru (971 GRT) runs in Malakka Street at 3 ° 50 '  N , 99 ° 30'  E on a sea ​​mine laid by HMS Taurus and sinks.
May 13, 1944	The Royal Navy puts HMS Thule into service.
May 14, 1944	HMS Tally-Ho relocates sea mines in Malakka Street.
May 18, 1944	The Japanese tanker Nichiyoku Maru (1945 BRT) runs at 3 ° 41 ′  N , 99 ° 4 ′  E on a sea ​​mine laid by HMS Tally-Ho and is damaged.
May 27, 1944	HMS Tactician sinks two Siamese sailing ships off the west coast of Siam.
May 29, 1944	HMS Templar torpedoed and sunk the Japanese freighter Tyokai Maru (2658 GRT) in Malakka Street .
June 2, 1944	HMS Tantalus relocates sea mines in Malakka Street.
June 4, 1944	HMS Templar relocates sea mines in Malakka Street.
June 7, 1944	HMS Tantivy relocates sea mines in Malakka Street. HMS Taciturn is launched.
June 10, 1944	HMS Tantalus sunk in the Malay road at 3 ° 5 '  N , 99 ° 56'  O Japanese military transport Hiyoshi Maru (ex Dutch: Mandar , 536 BRT) with the deck gun.
June 12, 1944	The Royal Navy puts HMS Tiptoe into service.
June 17, 1944	HMS Truculent sinks a Japanese sailing ship with the deck gun in the southern part of Malakka Street.
June 24, 1944	HMS Truculent is laying sea mines in Malakka Street.
June 25, 1944	HMS Truculent sinks a Japanese sailing ship with the deck gun in Malakka Street.
June 26, 1944	HMS Truculent torpedoes and sunk about 60 nautical miles south-east of Medan (Sumatra) at 3 ° 15 '  N , 99 ° 46'  O Japanese freighter Harugiku Maru (3040 BRT).
June 27, 1944	HMS Truculent sinks a Japanese sailing ship with the deck gun in Malakka Street.
June 28, 1944	HMS Truculent sinks a Japanese sailing ship with the deck gun in Malakka Street.
June 29, 1944	HMS Truculent sinks a Japanese sailing ship with explosive charges in Malakka Street.
July 8, 1944	The Royal Navy puts HMS Trump into service.
July 16, 1944	HMS Templar unsuccessfully attacked the German supply submarine U 1062 with torpedoes in Malakka Street .
July 17, 1944	HMS Tantalus unsuccessfully attacks the Japanese submarine I-166 in Malakka Street with torpedoes. The Japanese submarine is torpedoed and sunk by HMS Telemachus on the same day .
August 3, 1944	The Japanese mine- layer Hatsutaka (1860 ts) runs off Klang (Malaya) at 2 ° 51 ′  N , 101 ° 15 ′  E on a sea ​​mine laid by HMS Truculent and is damaged.
August 5, 1944	HMS Terrapin bombs Japanese positions near Gunungsitoli ( Nias , Dutch East Indies). On the same day, a coaster sunk and another damaged. HMS Turpin is launched.
August 9, 1944	HMS Trenchant sunk off the southwestern coast of Sumatra at 4 ° 29 '  S , 102 ° 54'  O the Japanese fishing vessel Hiyoshi Maru No. 3 (48 BRT) and two other small units with the deck gun.
August 18, 1944	Zwaardvisch sunk in the Malay road at 4 ° 0 '  N , 99 ° 32'  O the sailing ship Kim Hup Soen (48 BRT) with on-board artillery.
August 19, 1944	Zwaardvisch sunk in the Malay road at '4 ° 30  N , 98 ° 15'  O two sailing vessels board artillery.
August 21, 1944	Zwaardvisch sunk in the Malay road at '4 ° 15  N , 99 ° 14'  O a sailing vessel with board artillery. HMS Tapir is launched.
August 22, 1944	HMS Tally-Ho sunk a Japanese coaster with the deck gun in Malakka Street. HMS Tudor sinks a sailing ship with the deck gun north of Sumatra.
August 24, 1944	HMS Tally-Ho sank three small Japanese sailing ships with the deck gun in Malakka Street.
August 31, 1944	HMS Tantalus sinks a Siamese sailing ship with the deck gun in Malakka Street. The sinking of another sailing ship is reported.
September 4, 1944	HMS Tantalus reports the damage to a tractor in Malakka Street.
September 5, 1944	HMS tantivy torpedoes and sunk in the Semangka-bay at 5 ° 44 '  S , 104 ° 58'  O Japanese freighter Shiretoko Maru (ex Dutch: Siberoet 1799 BRT).
September 6, 1944	HMS Tabard (P342) is laid down at Scott's Shipbuilding & Engineering Co. in Greenock.
September 16, 1944	HMS Tradewind arrives at two small Japanese units in front of Sundastraße and sinks them with explosive charges. HMS Trenchant moved in the Malay road at 4 ° 8 '  N , 98 ° 15'  O sea mines.
September 18, 1944	HMS Trade wind torpedoes and sunk 18 nautical miles south of Mukomuko (Sumatra) in 2 ° 52 '  S , 101 ° 12'  O Japanese military transport Junyo Maru (5065 BRT). The Japanese ship of hell transports 4,200 Indonesian slave laborers and 2,300 Allied prisoners of war. 5620 people are killed.
September 19, 1944	HMS Trenchant rams two Siamese sailing ships east of Sumatra and sinks them.
September 23, 1944	HMS Trenchant torpedoes and sunk in the Malay Street Northwest of Penang at 5 ° 46 '  N , 100 ° 4'  O the German submarine U 859 .
September 24, 1944	HMS Tudor is laying sea mines off the west coast of Siam.
September 27, 1944	HMS Thorough sinks a small Japanese unit north of Sumatra.
October 4, 1944	HMS Tally-Ho damaged a small Japanese motor ship with the deck gun in Malakka Street.
October 6, 1944	Zwaardvisch torpedoes and sunk in the Java Sea at 6 ° 20 '  S , 111 ° 28'  O the German submarine U 168 . HMS Tally Ho sunk about 110 nautical miles south west of Penang at 4 ° 20 '  N , 98 ° 24'  O Japanese auxiliary U-Hunter Cha 2 (130 ts).
October 8, 1944	The Royal Navy puts HMS Taciturn into service.
October 10, 1944	Zwaardvisch the Indonesian island sunk southwest Bawean at 5 ° 57 '  S , 112 ° 29'  O Japanese patrol boat Koei Maru (19 BRT) with the deck gun.
October 15, 1944	Zwaardvisch sunk before Surabaya at '6 ° 30  S , 111 ° 35'  O Japanese research vessel Kaiyo Maru No. 2 (143 BRT) with the deck gun.
October 17, 1944	Zwaardvisch torpediert before Bawean at 5 ° 26 '  S , 113 ° 48'  O Japanese Minelayer Itsukushima (1970 ts) and Wakataka (1608 ts). Itsukushima is sunk and Wakataka is damaged.
October 21, 1944	HMS Tantivy sunk the smaller Japanese units Chokyu Maru No. with the deck gun in Malakka Street . 2 (136 GRT), Takasago Maru No. 3 (82 BRT), Otori Maru (198 BRT) and six other unidentified vehicles.
October 22, 1944	HMS Tantivy sunk off Makassar ( Sulawesi , Dutch East Indies) at 5 ° 47 ′  S , 119 ° 42 ′  E the Japanese Aviso No. 137 (about 200 GRT) with the deck gun. On the same day, six more unidentified smaller units are sunk.
October 23, 1944	HMS Tantivy sinks a Japanese sailing ship with the deck gun off Makassar.
October 25, 1944	HMS tantivy sunk before Sumbawa at 8 ° 8 '  S , 117 ° 45'  O Japanese Slight No. 136 and the Japanese motor sailing ship Tachibana Maru No. 47 with the deck gun.
October 27, 1944	HMS Trenchant transports small Chariot submarines to the port of Phuket , which sink the Japanese military transport Sumatra Maru (984 GRT, ex Dutch: Tomori ).
October 30, 1944	HMS Terrapin sinks three Japanese sailing ships with the deck gun in Malakka Street. HMS Tradewind is laying sea mines in the Bay of Bengal off the Burmese Mergui Islands ( Tanintharyi ).
November 2, 1944	HMS Tantalus accesses 225 nautical miles east of Singapore at 0 ° 48 '  N , 107 ° 43'  O Japanese freighter Hachijin Maru (1918 BRT) and Japanese U-Hunter Ch 1 (266 ts) with torpedoes. The freighter is sunk, the U-fighter damaged. HMS Terrapin sunk in the Malay road at 1 ° 30 '  N , 103 ° 0'  O Japanese auxiliary vessel Kumano Maru (872 BRT).
November 4, 1944	HMS Terrapin torpedoes and sunk in the Malay road at 3 ° 44 '  N , 99 ° 50'  O Japanese minesweeper W-5 .
November 8, 1944	HMS Tradewind sinks five Japanese sailing ships with the deck gun off Burma.
November 10, 1944	HMS Tradewind sinks two Japanese sailing ships with the deck gun off Burma.
November 11, 1944	HMS Tantalus sinks the Japanese coaster Palang Maru (around 200 GRT) with the deck gun off the east coast of Malaysia .
November 13, 1944	HMS Thorough sinks a Japanese sailing ship with the deck gun in Malakka Street.
November 14, 1944	HMS Thorough sinks two Japanese sailing ships with the deck gun in Malakka Street and damages another.
November 16, 1944	HMS Tudor sinks a Japanese unit with the deck gun off the west coast of Sumatra.
November 17, 1944	HMS Tally-Ho sinks seven Japanese sailing ships with artillery on Malakka Street.
November 18, 1944	HMS Tally-Ho sinks three Japanese sailing ships with artillery in Malakka Street.
November 19, 1944	HMS Thorough relocates sea mines in Malakka Street.
November 20, 1944	HMS Tally Ho sunk 30 nautical miles east of the southern tip of Great Nicobar ( Nikobaren ) at 6 ° 55 '  N , 94 ° 15'  O Japanese auxiliary mines-Leger Ma 4 (215 ts).
November 22, 1944	HMS Thorough sinks a Japanese sailing ship with the deck gun in Malakka Street.
December 16, 1944	HMS Thule is laying twelve sea mines off the island of Terutan.
December 18, 1944	The Royal Navy puts HMS Turpin into service.
December 21, 1944	HMS Trenchant sinks two Japanese landing craft with the deck gun off the east coast of Sumatra .
December 22, 1944	HMS Terrapin sunk together with HMS Trenchant at 1 ° 4 '  S , 104 ° 34'  O Japanese tanker Yaei Maru No. 6 (834 GRT) with artillery on board. HMS Tudor sinks a Japanese sailing ship with the deck gun off Burma.
December 23, 1944	HMS Thorough relocates sea mines in Malakka Street.
December 24, 1944	HMS Tudor sinks two Japanese sailing ships with the deck gun off Burma.
December 25, 1944	Together with HMS Trenchant, HMS Terrapin sinks the Japanese rescue minesweeper Reisui Maru (219 GRT). The two submarines also report the sinking of a fishing vessel and three coasters. HMS Tudor sinks two Japanese sailing ships with the deck gun off Burma.
December 27, 1944	HMS Tudor sinks a Japanese sailing ship with the deck gun off Burma.
December 28, 1944	HMS Thule unsuccessfully torpedoed a submarine off Penang. It is probably the Japanese RO-113 .
December 29, 1944	HMS Terrapin sinks a Japanese sailing ship with the deck gun in Malakka Street. HMS Thorough sinks two Japanese sailing ships off the west coast of Siam. Between December 17th and 29th, HMS Thule sank 13 junks , two lighters and five sampans with the deck gun in Malakka Street  . HMS Trenchant sinks two Japanese sailing ships with the deck gun in Malakka Street. HMS Tudor sinks a Japanese sailing ship with the deck gun off Burma.
December 30, 1944	HMS Terrapin sinks two Japanese sailing ships with the deck gun in Malakka Street. HMS Trenchant sinks a Japanese sailing ship with the deck gun in Malakka Street. The Royal Navy puts HMS Tapir into service.
December 31, 1944	HMS Trenchant sinks two Japanese sailing ships with the deck gun in Malakka Street.

1945

In the last year of the war, no more new units are launched. Seven units are put into service, one of which is given to the Dutch Navy. After the German surrender on May 8, the submarines are only used in combat in Asia. On May 19, the HMS Terrapin was so badly damaged by a Japanese escort vehicle that it was later written off as a total loss. The Terrapin is still the last British combat loss of a submarine. The Second World War ends on August 15 with a declaration of surrender by the Japanese Emperor Hirohito published on the radio . The Japanese surrender is officially signed on September 2nd. The first three units will be decommissioned and sold for scrapping by the end of the year.

During the war, 51 units were put into service, 16 of which were lost in combat operations.

date	comment
January 1, 1945	HMS Thorough sinks a Japanese sailing ship with the deck gun off the west coast of Siam. The Japanese freighter Kyokko Maru (593 BRT) runs at the Mergui Islands at 12 ° 26 '  N , 98 ° 39'  O on of HMS Trade wind Laid sea mines and sinks.
January 9, 1945	The Royal Navy puts HMS Totem into service.
January 22, 1945	HMS Thrasher sinks four Japanese sailing ships with artillery off the west coast of Siam .
January 23, 1945	The Japanese freighter Nikkaku Maru (1946 BRT) and the tanker hozan Maru I go (868 BRT) run in the Malay road at 4 ° 8 '  N , 98 ° 15'  O on of HMS Trenchant on September 16, 1944 Laid sea mines and sink.
January 27, 1945	HMS Thrasher sinks three Japanese sailing ships with artillery off the west coast of Siam.
January 28, 1945	HMS Thrasher sinks three Japanese sailing ships with artillery off the west coast of Siam.
January 30, 1945	HMS Tantalus sunk in Bangka Street (between Bangka and Sumatra, Dutch East Indies) at 1 ° 26 ′  S , 105 ° 1 ′  E the Japanese fishing vessel Taisei Maru No. 12 (120 BRT) with the deck gun.
January 31, 1945	HMS Tantalus sinks a Japanese unit with the deck gun in the southern part of the South China Sea .
February 1, 1945	HMS Tantalus sinks a Japanese tugboat and three barges with the deck gun in the south of the South China Sea.
February 3, 1945	HMS Tantivy sunk two Japanese coasters and a tug in the port of Panjang (Sumatra).
February 13, 1945	HMS Thorough sinks a Japanese sailing ship with the deck gun off the west coast of Siam. HMS Talent (III) (P337) is launched at Vickers-Armstrong in Barrow-in-Furness.
February 14, 1945	HMS Thorough sinks a Japanese coaster and a sailing ship with the deck gun off the west coast of Siam.
February 15, 1945	HMS Thorough sinks a Japanese sailing ship with the deck gun off the west coast of Siam.
February 16, 1945	HMS Thorough sunk three Japanese sailing ships with the deck gun off the west coast of Siam. Zwaardvisch is badly damaged by a Japanese plane on Lombok Street . USS Charr escorts the battered boat to the Fremantle base .
February 18, 1945	HMS Thorough sunk five Japanese sailing ships with the deck gun off the west coast of Siam.
February 23, 1945	HMS Thorough sank two Japanese sailing ships, a coaster and a lighter with the deck gun off the west coast of Siam.
February 24, 1945	HMS Terrapin and HMS Trenchant are jointly sinking four Japanese coasters with their deck guns in Malakka Street. Terrapin also sinks another small unit. In addition, Trenchant sinks two barges, three junks and another small unit. HMS Thorough sunk three Japanese sailing ships with the deck gun off the west coast of Siam.
February 25, 1945	HMS Trenchant sunk in the Malay road at 3 ° 7 '  N , 99 ° 56'  O a Japanese sailing boat with the deck gun.
February 28, 1945	HMS Thorough sinks two Japanese sailing ships with the deck gun off the west coast of Siam.
March 1, 1945	HMS Terrapin sinks two Japanese sailing ships with the deck gun in Malakka Street.
March 2, 1945	HMS Terrapin sunk in the Malay road at 3 ° 28 '  N , 101 ° 0'  O a Japanese sailing boat with the deck gun.
March 4, 1945	HMS Terrapin and HMS Trenchant sink together in the Malay Straße 85 nautical miles south of Penang at 4 ° 4 '  N , 100 ° 35'  O Japanese U-Hunter Ch 8 with on-board artillery.
March 9, 1945	HMS Trenchant sinks a Japanese tug and a lighter with the deck gun in Malakka Street.
March 16, 1945	HMS Thrasher sinks a Japanese sailing ship with the deck gun off Burma. HMS Torbay damages a Japanese coaster with the deck gun off the west coast of Siam.
March 18, 1945	HMS Thrasher sinks a Japanese sailing ship with the deck gun off the west coast of Burma.
March 19, 1945	HMS Thrasher sinks three Japanese sailing ships with the deck gun off the west coast of Siam.
March 28, 1945	HMS Thule sinks two Japanese sailing ships with the deck gun off the west coast of Siam. The Dutch Koninklijke Marine puts the Tijgerhaai (ex HMS Tarn ) into service.
April 1, 1945	HMS Thule sinks a Japanese sailing ship with the deck gun off the west coast of Siam.
April 2, 1945	HMS Thorough sinks a Japanese gunboat with artillery in front of the Nicobar Islands.
April 3, 1945	HMS Thule sinks two Japanese sailing ships with the deck gun off the west coast of Siam.
April 10, 1945	HMS Thorough sinks a Japanese coaster with the deck gun off the west coast of Sumatra.
April 12, 1945	HMS Tapir torpedoes and sunk northwest of Bergen (Norway) at 60 ° 44 '  N , 4 ° 39'  O the German submarine U 486 .
April 18, 1945	The Royal Navy puts HMS Tireless into service.
April 20, 1945	HMS Tradewind sinks a Japanese tug and two sailing ships with the deck gun in the Gulf of Thailand .
April 25, 1945	Zwaardvisch sunk two Malay sailing ships with explosive charges off Surabaya.
April 27, 1945	HMS Teredo is launched.
April 29, 1945	HMS Trade wind torpedoes and sunk in the Gulf of Thailand at 6 ° 48 '  N , 101 ° 36'  O Japanese freighter Takasago Maru (1116 BRT).
May 13, 1945	HMS Trump sunk in the Sapudi road at 7 ° 5 '  S , 114 ° 13'  O the Japanese Coast protection vessel Shosei Maru No. 15 (43 BRT) with the deck gun.
May 15, 1945	HMS Tiptoe sinks a Japanese coaster with the deck gun off Simbawa.
May 17, 1945	HMS Terrapin sank a Japanese sailing ship with the deck gun in the western Java Sea and damaged another. HMS Tiptoe sinks a Japanese coaster with the deck gun off Simbawa.
May 19, 1945	HMS Terrapin attacks a Japanese tanker west of Batavia and is badly damaged by the escort vehicles' depth charges. The submarine can escape, but is written off as a constructive loss in Australia.
May 25, 1945	HMS Trenchant sunk east of the Indonesian island Mandalike at 6 ° 23 '  S , 110 ° 55'  O Japanese auxiliary minesweeper Wa 105 (175 ts, ex Dutch: Grissee ). HMS Trump sinks a Japanese sailing ship with the deck gun in the Sapudi Strait (Dutch East Indies). The Royal Navy puts HMS Truncheon into service.
May 28, 1945	HMS Trump sinks a Japanese coaster with the deck gun in Sapudi Strait.
June 1, 1945	HMS tiptoe torpedoes and sunk in the Java Sea off the Indonesian island Matasiri at 4 ° 40 '  S , 115 ° 32'  O Japanese freighter Tobi Maru (982 BRT). HMS Trump sunk a Japanese coaster with the deck gun north of Bali.
June 2, 1945	HMS Trident sinks a Japanese sailing ship with explosive charges in Malakka Street.
June 3, 1945	HMS Thorough sunk two Japanese coasters with the deck gun off the Malay island of Pulau Tenggol.
June 5, 1945	HMS Thorough sinks a Japanese coaster with the deck gun off Pulau Tenggol.
June 8, 1945	HMS Trenchant torpedoes and sunk in the northern entrance of the Bangka Road at 9 ° 59 '  S , 104 ° 56'  O Japanese heavy cruiser Ashigara (13000 ts)
June 15, 1945	HMS Taciturn sinks a Japanese Hulk (the upscale Dutch submarine K XVIII ) and the Japanese auxiliary submarine Cha 105 (130 ts) with the deck gun north of Surabaya .
June 17, 1945	HMS Taciturn sinks a Japanese sailing ship north of Surabaya. HMS Thorough sinks a Japanese trawler and a sailing ship off Surabaya .
June 18, 1945	HMS Trident sinks a Japanese landing craft with the deck gun in Malakka Street.
June 22, 1945	HMS Thrasher sinks three Japanese sailing ships with the deck gun off the west coast of Siam.
June 24, 1945	HMS Torbay sinks a Japanese coaster with the deck gun off Sabang (Dutch East Indies).
June 27, 1945	HMS Thermopylae is launched.
June 30, 1945	HMS Torbay sinks two Japanese sailing ships with explosive charges in Malakka Street.
July 13, 1945	HMS Trenchant sunk west of Sulawesi at 3 ° 10 '  S , 118 ° 50'  O a Japanese sailing boat with the deck gun.
July 15, 1945	HMS Trenchant sunk northeast of the Lombok at 8 ° 22 '  S , 116 ° 2'  O three small Japanese sailboats with the deck gun.
July 17, 1945	HMS Thule sinks a Japanese coaster with the deck gun north of Java .
July 19, 1945	HMS Thule sinks a Japanese coaster with the deck gun north of Java.
July 20, 1945	HMS Thule sinks a Japanese coaster with the deck gun north of Java.
July 23, 1945	HMS Tudor sinks a Japanese coaster with the deck gun in the Java Sea.
July 25, 1945	HMS Thrasher sinks a Japanese sailing ship with the deck gun north of Malakka Strait.
July 27, 1945	HMS Thrasher sinks four Japanese coasters and a sailing ship with the deck gun in the northern part of Malakka Street. The Royal Navy puts HMS Talent (III) into service.
July 28, 1945	HMS Tudor sinks two Japanese coasters with the deck gun in the Java Sea.
July 29, 1945	HMS Tudor sinks a Japanese coaster with the deck gun in the Java Sea.
July 31, 1945	HMS Tiptoe damages a Japanese coaster with the deck gun off the Sunda Strait.
August 1, 1945	HMS Taciturn operates jointly with HMS Thorough north of the coast of Bali. Taciturn sinks two Japanese sailing ships with the deck gun. Thorough sinks a coaster and a sailing ship.
August 2, 1945	HMS Thorough sinks a Japanese sailing ship with the deck gun off Bali.
August 3, 1945	HMS tiptoe torpedoes and sunk before the Sunda Strait at 5 ° 7 '  S , 106 ° 5'  O Japanese salvage ship Tencho Maru (2608 BRT).
August 4, 1945	HMS Thorough sinks a Japanese coaster with the deck gun off Bali.
August 9, 1945	HMS Tiptoe and HMS Trump jointly sink a Japanese tanker with artillery in the northern Sunda Strait.
August 12, 1945	HMS Thorough sinks the Malay sailing ship Palange (120 GRT) with the deck gun off Bali .
November 21, 1945	HMS Tabard is launched.
December 5, 1945	The Royal Navy puts HMS Thermopylae into service.
December 15, 1945	The Royal Navy puts HMS tokens into service.
December 19, 1945	HMS Torbay (N79), HMS Truant (N68) and HMS Tuna (N94) are being sold for scrapping.

After 1945

In 1946 the last two units are put into service. The remaining boats from the first and second construction lots and submarines that have not yet been completed will be scrapped by 1947. Until the 1950s, many of the boats in the third batch were converted based on the German submarine class XXI and, similar to the US Greater Underwater Propulsion Power Program, optimized for high underwater speeds and equipped with snorkels. The Royal Navy decommissioned its last T-class submarine in 1969.

In addition to the two units handed over to the Netherlands during the war, eight submarines are sold or rented to friendly nations. Between 1948 and 1953 the Dutch Navy leased two more submarines. The last Dutch submarine was taken out of service in 1964. The Royal Australian Navy took over three units in the 1960s, which they used until around 1968. The last foreign customer is the Israeli Navy . Israel buys three units in 1965, which are put into service in 1967 after renovation and modernization measures. A boat is already lost on the crossing to Israel. The last Israeli submarine of the class is the Dolphin (ex HMS Truncheon ), which was taken out of service in 1975 as the world's last T-class submarine.

date	comment
February 17, 1946	HMS Trident (N52) is sold for scrapping and demolished in Newport, England.
April 13, 1946	The Royal Navy puts HMS Teredo into service.
June 1946	HMS Terrapin (P323) is being scrapped. HMS Tuna (N94) is scrapped in Briton Ferry, Wales.
June 25, 1946	The Royal Navy puts HMS Tabard into service.
July 1946	The discontinued HMS Thor (P349) is sold for scrapping.
November 1946	HMS Taku (N38) is being sold for scrapping and demolished in Llanelly.
December 1946	HMS Truant (N68) sinks on the way to being scrapped.
January 1947	HMS Trusty is being sold for scrapping.
March 1947	HMS Torbay (N79) is scrapped in Briton Ferry, Wales.
March 9, 1947	HMS Thrasher (N37) is scrapped in Briton Ferry.
June 1947	The discontinued HMS Tiara (P351) is sold for scrapping.
July 1947	HMS Tribune (N76) and HMS Trusty (N45) are scrapped in Milford Haven .
June 4, 1948	HMS Taurus is handed over to the Netherlands and commissioned on the same day by the Dutch Koninklijke Marine with the name Dolfijn . The submarine is up in 1953 by the Royal Navy used and then return to the Royal Navy back.
June 18, 1948	HMS Tapir is handed over to the Netherlands.
July 12, 1948	The Dutch Koninklijke Marine puts the HMS Tarn (P335) with the name Zeehond into service. The submarine is up in 1953 by the Royal Navy used and then return to the Royal Navy back.
1950	Zwaardvisch (ex HMS Talent (I) ) is renamed Zwaardvis .
January 12, 1950	HMS Truculent collides with the merchant ship Dvina in the mouth of the Thames . Over 30 sailors are killed. In a trial, the Truculent's commander is given 75 % of the blame and the Dvina's captain 25% of the blame. As a result of the accident, British submarines are equipped with an additional white light on the bow, the so-called truculent light .
March 14, 1950	The wreck of the HMS Truculent is lifted and brought ashore the next day.
May 8, 1950	HMS Truculent (P315) is sold as scrap.
November 1950	HMS Tantalus (P318) is being scrapped in Milford Haven.
1951	HMS Tantivy (P319) is sunk in the Cromarty Firth, Scotland as a training target.
July 15, 1953	The Dutch Koninklijke Marine provides Zeehond decommissioned and gives the submarine to the Royal Navy back.
7th December 1953	The Dutch Koninklijke Marine provides Delfijn decommissioned and gives the submarine to the Royal Navy back to the submarine on the same day under the previous name HMS Taurus is again in service.
December 16, 1953	The Royal Navy puts the HMS Tapir (ex Dutch: Zeehond ) with the previous name back into service.
1954	HMS Templar is sunk in Loch Striven (Scotland) as a training target.
December 15, 1954	HMS Talent (III) is damaged in an accident in dry dock. Four sailors are killed.
December 14, 1955	HMS Tradewind (P329) is being sold for scrapping and then demolished in Charlestown.
1956	HMS Trump is being overhauled and modernized.
20th September 1957	HMS Taciturn collides with a merchant ship off Brighton , but is not damaged.
May 8, 1956	HMS Talent (III) is damaged in a collision near the Isle of Wight .
4th December 1957	Zwaardvis (ex HMS Talent (I) ) collides with the cargo ship SS Tanar in the Nieuwe Waterweg and is damaged.
4th December 1958	The wreck of the HMS Templar , sunk in 1954 in Loch Striven (Scotland) as a training target , is lifted.
July 19, 1959	HMS Templar (P316) is scrapped in Troon.
March 1960	Zwaardvis (ex HMS Talent (I) ) takes part in an international support mission for the victims of the Agadir earthquake .
April 1960	HMS Taurus (P339, ex Dutch: Dolfijn ) is scrapped in Dunston-on-Tyne.
1961	HMS Trump will be handed over to the Royal Australian Navy , which will use the submarine until 1969.
August 28, 1961	HMS Telemachus (P321) is scrapped in Charlestown.
September 26, 1961	HMS Trespasser is demolished in Gateshead.
1962	HMS Tabard is handed over to the Royal Australian Navy , which will use the submarine until 1968.
June 29, 1962	HMS Thorough is scrapped in Dunston.
September 14, 1962	HMS Thule (P325) is scrapped in Inverkeithing.
December 11, 1962	The Dutch Koninklijke Marine provides Zwaardvis (ex HMS Talent (I) (P322)) out of service.
July 1, 1963	HMS Trenchant (P331) and HMS Tudor (P326) are sold for scrapping and demolished in Faslane.
July 12, 1963	Zwaardvis (ex HMS Talent (I) (P322)) is being sold for scrapping.
December 6, 1963	HMS Tactician (P314) is scrapped in Newport.
1964	HMS Taciturn is overhauled in Australia and then used by the Royal Australian Navy .
January 10, 1964	HMS Tiptoe runs aground in the mouth of the Clyde .
December 11, 1964	The Dutch Koninklijke Marine provides Tijgerhaai (ex HMS Tarn (P336)) out of service.
1965	HMS Truncheon and HMS Turpin are sold to Israel.
June 5, 1965	HMS Teredo (P338) is scrapped at Briton Ferry.
July 13, 1965	HMS Tiptoe will be damaged in a collision.
November 5, 1965	Tijgerhaai (ex HMS Tarn (P336)) is being sold for scrapping.
December 1966	HMS Tapir (P335, ex Dutch: Zeehond ) is scrapped in Faslane.
1967	The Israeli Navy puts HMS Truncheon with the name Dolphin and HMS Turpin with the name Leviathan (לויתן) into service.
February 10, 1967	HMS Tally-Ho (P317) is scrapped in Briton Ferry, Wales.
November 10, 1967	The Israeli Navy puts HMS Totem called Dakar (דקר) into service.
1968	HMS Tireless (P327) is scrapped in Newport. HMS Trump returns to England from Australia.
January 26, 1968	The Israeli Dakar (ex HMS Totem ) is lost under unexplained circumstances during the crossing from Great Britain to Israel in the eastern Mediterranean.
29th August 1969	HMS Tiptoe will be the last active British T-class submarine to be retired.
1st February 1970	HMS Talent (III) (P337) is scrapped in Troon.
March 1970	HMS Token (P328) is scrapped in Cairn Ryan, Scotland.
3rd July 1970	HMS Thermopylae is scrapped in Troon.
1st August 1971	HMS Trump (P333) is scrapped in Newport.
August 8, 1971	HMS Taciturn (P334) is abandoned in Briton Ferry.
December 1973	Leviathan (ex HMS Turpin , P354) is sunk as a torpedo training target.
2nd January 1974	HMS Tabard is being sold for scrapping.
March 14, 1974	HMS Tabard (P342) will be scrapped.
1975	The Israeli Navy decommissioned Dolphin as the world's last T-class boat.
1977	Dolphin (ex HMS Truncheon , P353) is scrapped in Israel.
1979	HMS Tiptoe (P332) is scrapped in Portsmouth.
May 26, 1999	The wreck of the Dakar (ex HMS Totem , P352) is discovered at a depth of 3000 meters.

See also

• List of British submarine classes
• Chronology World War II
• Submarine war

Web links

• T-class in uboat.net
• T-Class at submariners.co.uk (English)
• British Submarines of World War Two (English)
• T-class at battleships-cruisers.co.uk (English)
• Israeli T-class submarines (English)
• Dutch T-class submarines (English)
• warsailors.com page about Norwegian merchant ships in World War II

literature

• Erminio Bagnasco: Submarines in World War II . 5th edition. Motorbuchverlag, Stuttgart 1996, ISBN 3-613-01252-9 .
• Robert Hutchinson: Fight Under Water - Submarines from 1776 to the Present . 1st edition. Motorbuchverlag, Stuttgart 2006, ISBN 3-613-02585-X .
• Anthony Preston: The History of the Submarines . Karl Müller Verlag, Erlangen 1998, ISBN 3-86070-697-7 .
• Peter Padfield: The Submarine War 1939-1945 . Ullstein Taschenbuchverlag, Munich 2000, ISBN 3-548-24766-0 .

References and comments

1. ↑ Hutchinson and Bagnasco do not provide any information on the launching of the T-class submarines. The information on launch runs comes from uboat.net .
2. ↑ The uboat.net states that the Taku was commissioned on January 3, 1940. Hutchinson states October 3, 1940.
3. ↑ The sources for the sinking of the EH Stinnes 4 are very contradictory: uboat.net claims that the steamer was sunk by HMS Truant on March 25, 1940 . www.wlb-stuttgart.de also mentions HMS Truant , but gives the date March 23, 1940 and as the commander of the submarine Lt.Cdr. Seale at. According to uboat.net, Seale was the commander of HMS Trident at this time . poseidon-schiffahrts-archiv.eu does not give an exact date, but assigns the sinking to HMS Trident . home.cogeco.ca ( memento of April 29, 2007 in the Internet Archive ) gives March 24, 1940 as the date and HMS Trident as the submarine .
4. ↑ HMS Trident in uboat.net.
5. ↑ Tropic Sea on warsailors.com (English)
6. ↑ Tirranna on warsailors.com (English)
7. ↑ Enrico Toti ( Memento of March 11, 2007 in the Internet Archive ) on regiamarina.net (English)
8. ↑ The uboat.net states October 26, 1940 for the commissioning of the HMS Thunderbolt (ex HMS Thetis ). Hutchinson gives April 1940.
9. ↑ Capitano Tarantini ( Memento of April 23, 2007 in the Internet Archive ) on regiamarina.net (English)
10. ↑ HMS Taku in uboat.net.
11. ↑ Salpa ( Memento from August 29, 2003 in the Internet Archive ) on regiamarina.net (English)
12. ^ Peter Padfield: The Submarine War 1939-1945 . Ullstein Taschenbuchverlag, Munich 2000, ISBN 3-548-24766-0 , pp. 201 .
13. ↑ Michele Bianchi ( Memento from December 29, 2007 in the Internet Archive ) on regiamarina.net (English)
14. ↑ regiamarina.net ( Memento from September 26, 2007 in the Internet Archive ) (English)
15. ↑ uboat.net
16. ^ Peter Padfield: The Submarine War 1939-1945 . Ullstein Taschenbuchverlag, Munich 2000, ISBN 3-548-24766-0 , pp. 202-203 .
17. ↑ War crimes against castaways at wlb-stuttgart.de.
18. ↑ Sea War in July 1941 at wlb-stuttgart.de.
19. ↑ Ole Jacob on warsailors.com (English)
20. ↑ Haakon Jarl on warsailors.com (English)
21. ↑ Mimona on warsailors.com (English)
22. ↑ Tugela on warsailors.com (English)
23. ↑ Havbris on warsailors.com (English)
24. ↑ Medusa ( Memento from August 19, 2008 in the Internet Archive ) on regiamarina.net (English)
25. ↑ Nagara on combinedfleet.com (English)
26. ↑ The uboat.net is contradictory, on the one hand it is written by the Admiral Scheer , in the next sentence the source means the Admiral Hipper .
27. ↑ ^{a b c d e f} The uboat.net gives as an additional shipyard John Brown Shipbuilding & Engineering Company Ltd. in Clydebank, Scotland.
28. ↑ ^{a b} The uboat.net specifies the HMS Trenchant P331 as the shell number . Hutchinson specifies P318 ex P98 . Hutchinson's statement appears to be incorrect as he gives the same numbers for HMS Tantalus .
29. ↑ ^{a b} The uboat.net specifies the HMS Tantalus P318 as the shell number . Hutchinson specifies P318 ex P98 . Hutchinson's statement is contradictory as he gives the same numbers for HMS Trenchant .
30. ↑ Sea War in August 1942 at www.wlb-stuttgart.de.
31. ↑ ^{a b c} The uboat.net specifies Bellis & Morcom in Ladywood ( Birmingham , England) as an additional shipyard .
32. ↑ ^{a b} The uboat.net gives no concrete information about the loss of the HMS Traveler and only mentions the loss declaration of December 12, 1942. Hutchinson gives December 8, 1942 as the time of the presumed mine hit. rnsubmus.co.uk , home.cogeco.ca ( memento of April 29, 2007 in the Internet Archive ) and the HMS Traveler ( HMS Traveler (N48) in the English language Wikipedia) give December 4, 1942 as the date of the loss.
33. ↑ ( page no longer available , search in web archives: Porfidio ) on regiamarina.net (English)
34. ↑ The uboat.net states December 31, 1942 for the laying of the keel of the HMS Trump . Hutchinson gives December 13, 1942.
35. ↑ The sources are contradicting the sinking of the Ulpio Traiano . Hutchinson, wlb-stuttgart.de , regiamarina.net ( Memento from May 16, 2008 in the Internet Archive ) and schiffswrackliste.de give the 2nd / 3rd January 1943. marinearchiv.de gives the 2nd / 3rd June 1943.
36. ↑ ^{a b c d e} Zwaardvisch or Zwaardvis on http://www.dutchsubmarines.com/ (English)
37. ^ Sea War in April 1943 on wlb-stuttgart.de.
38. ↑ HMS Tuna in uboat.net.
39. ↑ The uboat.net and Bagnasco passed as Boatyard of HMS Turpin the Navy Yard Chatham on. Hutchinson states that the shipyard is Portsmouth .
40. ↑ Italian transport submarines ( Memento from December 19, 2007 in the Internet Archive ) on regiamarina.net (English)
41. ↑ Kashii on combinedfleet.com (English)
42. ↑ Information about Operation Source ( Memento from September 28, 2007 in the Internet Archive ) on schlachtschiff.com.
43. ↑ Kari on warsailors.com (English)
44. ↑ The uboat.net states October 26, 1943 for the laying of the Thermopylae keel . Hutchinson gives October 16, 1943.
45. ↑ I-34 on combinedfleet.com (English)
46. ↑ Kuma on combinedfleet.com (English)
47. ↑ The uboat.net states January 22, 1944 for the commissioning of the HMS Terrapin . Hutchinson gives January 21, 1944.
48. ↑ Kitikami on combinedfleet.com (English)
49. ↑ UIT 23 in uboat.net (English)
50. ↑ Moshill on warsailors.com (English)
51. ↑ I-37 on combinedfleet.com (English)
52. ↑ The uboat.net specifies June 12, 1944 for the commissioning of the HMS Tiptoe . Hutchinson gives April 12, 1944.
53. ↑ I-166 on combinedfleet.com (English)
54. ↑ Sinking of the Junyo Maru ( Memento from May 27, 2017 in the Internet Archive ) (English)
55. ↑ Itsukushima on combinedfleet.com (English)
56. ↑ W-5 on combinedfleet.com (English)
57. ↑ RO-113 on combinedfleet.com (English)
58. ↑ The uboat.net states March 28, 1945 for the commissioning of the Tijgerhaai . Hutchinson states that the submarine was handed over to the Netherlands on March 28, 1945 and put into service on April 7, 1945.
59. ↑ Tijgerhaai on dutchsubmarines.com (English)
60. ↑ Ashigara on combinedfleet.com (English)
61. ↑ The http://www.wlb-stuttgart.de/
62. ↑ The uboat.net states April 13, 1946 for the commissioning of the Teredo . Hutchinson gives January 21, 1946.
63. ↑ The uboat.net states that the Tabard was put into service on June 25, 1946. Hutchinson states June 25, 1945.
64. ↑ uboat.net writes that the Tribune was scrapped in July 1947. Hutchinson writes that it was sold in July 1947.
65. ↑ Dolfijn on dutchsubmarines.com (English)
66. ↑ Zeehond on dutchsubmarines.com (English)
67. ↑ British submarines in World War II ( Memento from June 8, 2011 in the Internet Archive ) (English)
68. ↑ ^{a b} The uboat.net states that the HMS Trump was used by the Australian Navy between 1961 and 1968. Hutchinson does not mention the use in Australia.
69. ^ HMS Trump in the National Archives of Australia .
70. ↑ The uboat.net does not mention the use in Australia. Hutchinson states that the tabard was used by the Australian Navy between 1962 and 1968.
71. ↑ The sources for the end of duty and scrapping of the HMS Tactician (P314) are contradictory. Hutchinson states that the submarine was sold on December 6, 1962 and scrapped in Newport. Bagnasco does not give any details. uboat.net states that the submarine was scrapped in Newport on December 6, 1963. British submarines during World War II ( Memento of 8 June 2011 at the Internet Archive ) returns as the date for the " disposal " ( disposal ) on December 1, 1963rd
72. ↑ The uboat.net and Hutchinson do not mention the use in Australia. The information comes from the National Archives of Australia .
73. ↑ ^{a b c} Dakar on submarines.dotan.net (English)
74. ↑ The uboat.net states that the Leviathan was scrapped in 1978. Hutchinson states that the Israeli submarine was sunk in 1973 during torpedo tests as a training target.
75. ↑ The uboat.net states that the HMS Tiptoe was scrapped in 1979. Hutchinson states 1975.