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Terrapin to Thetis Page last Updated: 2-Jan-2008 Name Class Pennant Crew Built Builder Disposal Date Method Terrapin T3 P323 61 22-Nov-44 Vickers Armstrong Barrow 1945 War Loss Lt Cdr DSR Martin, DSO RN (previously of HMS Tuna). Carried out war patrols in the Skaggerak, between Norway and Denmark, based at the Holy Loch, on the Clyde. 24 March 1944, torpedoed the German seaplane carrier (or 'catapult ship') Schwabenland near Egersund, Norway (the Schwabenland had been a relay ship for trans-Atlantic mail carrying seaplanes, and had also surveyed the Antarctic in 1938). The Schwabenland was damaged and beached but later towed to Oslo. 5 Aug 44, bombarded Japanese installations at Gunung Sitoli, engaging shore batteries and guardboat Shime Maru. Terrapin had also sunk a Japanese Kosentai class minelayer and a Hashidate class frigate, all by torpedo, together with twelve ships sunk by gun action and six ships boarded and sunk by demolition charges.(Lt Cdr Martin was invalided off the boat after its first Far East patrol, suffering from active TB. He died of it in 1947). Assisted Trenchant in sinking of Japanese S/M Chaser No.5 in Malacca Strait, 4-Mar-45. At the end of March 1945, Terrapin moved to Fremantle, Western Australia to join US submarines operating up into the Pacific. Damaged 19-May-45, west of Batavia, Java in Java Sea - by depth charges of Japanese escort vessels, while attacking escorted tanker. 40 feet of the hull on the port side forward buckled in to a distance of 15 inches. There was considerable leakage into the torpedo tube space, where rivets had been displaced inwards on the port side. The forward part of the main pumping and flooding line was crushed. Escaped and returned to Fremantle, shepherded by US submarine Cavalla. In the evening of 30 May Terrapin entered Fremantle harbour. Examination showed that, in addition to the hull collapse, the forward torpedo tubes were distorted and out of line. The boat had, in effect, become slightly banana-shaped. She was declared a constructive loss on return to harbour, and was scrapped in June 1946. She was the last British submarine casualty of the Second World War. More Pictures. Tetrarch T1 77T, N77 56 15-Feb-40 Vickers Armstrong 27-Oct-41 War Loss Lt.Cdr RG Mills. Forced deep 43 hrs in April 1940. (see details). 23 Apr, 1940, torpedoed and sunk the German submarine chaser UJ B/Treff V (330 BRT) in the Skagerrak in position 58.21N, 10.24E. 20 May, 1940, captured the Danish fishing vessel Emmanuel in the North Sea in position 56.59N, 06.58E. The ship was taken to Leith as a prize. 20 May, 1940, sunk the Danish fishing vessel Terieven with scuttling charges in the North Sea west of Denmark in position 56.55N, 06.50E. 16 Jun, 1940, torpedoed and sunk the German tanker Samland (5978 BRT) south-west of Lista, Norway in position 58.12N, 06.13E. 4 Nov, 1940, torpedoed and sunk the Italian merchant Snia Amba (2532 BRT) off Benghazi, Libya in position 31º35'N, 19º20'E. Lt.Cdr. G.H. Greenway. 12 Apr, 1941, torpedoed and sunk the Italian tanker Persiano (2474 BRT) some 30 miles north-west of Tripoli, Libya in position 33.29N, 13.01E. 18 May, 1941, torpedoed and sunk the Italian merchant Giovinezza (2362 BRT) off Benghazi, Libya in position 31.55N, 19.55E. 22 Jul, 1941, claims to have damaged a sailing vessel with gunfire in the Aegean off Karlovassi. 25 Jul, 1941, attacked the Greek Olympos off Gaidero Island, Greece. The vessel is not hit. 27 Jul, 1941, sunk the Italian sailing vessel Nicita with gunfire 5 miles south of Kos, Greece. 23 Aug, 1941, sunk the Italian sailing vessels V 72/Fratelli Garre (413 BRT) and V 113/Francesco Garre (399 BRT) with gunfire in the Gulf of Syrte. 26 Sep, 1941, torpedoed and sunk the Italian merchant Citta di Bastia (2499 BRT) in the Aegean Sea some 18 nautical miles south of Milos Island, Greece in position 36º21'N, 24º23'E. 27 Sep, 1941, sunk the Greek sailing vessel Panagiotis Kramottos (120 BRT) with gunfire south-west of Milos Island, Greece. 28 Sep, 1941, torpedoed and damaged the German merchant Yalova (3751 BRT) in the Aegean Sea south of Agios Giorgios Island. Sailed from Beirut Oct-41 for refit in Britain, via Malta and Gibraltar. Failed to arrive in Gibraltar on 2nd November. Presumed lost on Italian mines in Strait of Sicily 27-Oct, off Capo Granditola, Sicily. Lost with all hands. The wreck has been found - see this website. An interesting alternative theory - that the boat was rammed by a French escort - comes from an ex-submariner, George Smith, who had been waiting in Beirut to join the Tetrarch. Thames River 71F 60 26-Jan-32 Vickers Armstrong Barrow 3-Aug-40 War Loss Portsmouth 1932-34, sent to Baltic 1933 to test capacity to work in ice-covered areas. Med 34-39, completed journey around Africa Winter 38-39. Lt.Cdr. W.D. Dunkerley. Sailed Dundee on first war patrol on 22-July-40. 26 Jul 40 Torpedoed and sunk German Torpedo boat Luchs W of Skagerrak. Luchs was part of screen for the Gneisenau and Nurnberg, which is believed to have been Thames' original target, and Luchs manoeuvred between the s/m and the battle cruiser just as the former fired her torpedoes. There also remains a possibility that Thames was damaged due to her resulting unexpected proximity with Luchs, but it seems more likely she went down 23-Jul-40 in a newly-laid German minefield at approximately 57N, 3E; either way, she failed to return from patrol on 3 Aug 40. One historian, Platon Alexiades, has written "There is no doubt that it was THAMES which attacked the GNEISENAU on 26 July. The LUCHS had the misfortune of intercepting one of the torpedoes aimed at the battlecruiser. THAMES did not make a signal concerning her attack which is surprising as it would certainly be of paramount importance. It is possible that her radio had problems or she was sunk in the counter-attack and had no time to transmit. [Not that surprising, a radio transmission meant surfacing - not a thing a submarine would want to do unless clear of the area. Ed.] Since the counter-attack does not appear to have been effective it is believed that she was sunk on a minefield (in position ca. 56.45N/03.26E) during the night of 2/3 August when she was ordered to return home". Lt Cdr Dunkerley was on his first patrol in command, having replaced Cdr. D.V. Sprague who had been killed while boarding the French submarine SURCOUF on 3 July. Some interesting information about Surcouf. Thames achieved 22.5kts on trials. Thermopylae T3 P355, later S55 c/s MTCL 61 27-Jun-45 HMDY Chatham 3-Jul-70 Scrap Too late for war. 1951-52 reconstructed and streamlined. 63-64 based Malta. Scuttled in Loch Striven, Scotland, and raised as a training exercise for salvage craft. Afterwards beached in Kames Bay. Arrived at Troon, under tow, 3 July 1970.   Thetis T1 N25 56 29-Jun-38 Cammell Laird Birkenhead 1-Jun-39 Loss (not war) Rebuilt HMS Thetis was commissioned on 4 March 1939. On 1 June 1939 she was lost in an accident during a trial dive in Liverpool Bay. Details. Of the 103 men aboard 99 died and only 4 survived. 45 of the 103 on board during the dive were personnel from the builders, Admiralty officials and new commanders. Thetis was salvaged, repaired and commissioned as HMS Thunderbolt (qv) on 26 October 1940.
Talisman to Teredo		Thistle to Thunderbolt