Allied Warships

Events on this day

11 May

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This page is our compilation of data from several different databases. All data shown here is dynamic, but is accurate according to the information we have right now. Although content is still being added daily, more than 75% of the launched and commissioned data is already in place, so this section is almost complete.

Quick links: War losses - General events

The Shipyard Report


Laid down (29)

1918: Royal Navy Destroyer St Marys (I 12) - US Navy Destroyer Bagley (i) (DD 185) - US Navy Destroyer Clemson (AVD 4)

1938: Royal Navy Submarine Tigris (N 63)

1941: US Navy Minesweeper Industry (AMc-86)

1942: Royal Navy Minesweeper BYMS 2031 (J 831) - Royal Navy Frigate Cuckmere (K 299) - US Navy Minesweeper Exploit (AM 95) - US Navy Submarine chaser SC-1042 (SC-1042) - US Navy Minesweeper YMS-147 (YMS-147) - US Navy Minesweeper YMS-238 (YMS-238) - US Navy Minesweeper YMS-270 (YMS-270)

1943: Royal Canadian Navy Minesweeper Fort Frances (J 396) - Royal Navy Frigate Barbados (K 504) - Royal Navy Landing Craft Tank LCT 669 (LCT 669) - Royal Navy Landing Craft Tank LCT 880 (LCT 880) - US Navy Escort carrier Kasaan Bay (CVE 69) - US Navy Frigate Muskegon (PF-24) - US Navy Submarine chaser SC-1075 (SC-1075)

1944: US Navy Submarine Cubera (347) - US Navy Landing Craft Infantry LCI(L)-688 (LCI(L)-688) - US Navy Landing craft tank LCT 700 (LCT 700) - US Navy Landing craft tank LCT 835 (LCT 835) - US Navy Landing craft tank LCT 879 (LCT 879) - US Navy Medium landing ship LSM 150 (LSM 150) - US Navy Medium landing ship LSM 151 (LSM 151) - US Navy Patrol craft PGM-29 (PGM-29) - US Navy Minesweeper YMS-435 (YMS-435)

1945: US Navy Motor torpedo boat PT 797

Launched (40)

1910: Royal Navy MS Trawler Manx Prince

1912: US Navy Fleet tug Sonoma (AT 12)

1914: Royal Navy MS Trawler Relonzo (FY 843)

1918: US Navy Destroyer Breese (DM 18) - US Navy Destroyer Gamble (DM 15)

1929: Royal Navy MS Trawler Alder (T 84) - Royal Navy MS Trawler Equerry (FY 668) - Royal Navy MS Trawler Lord Ashfield (FY 694)

1933: Royal Canadian Navy Armed Yacht Sans Peur (Z 02) - Royal Navy ASW Trawler La Nantaise (FY 360) - Royal Navy ASW Trawler Saon (FY 159)

1935: Royal Dutch Navy Light cruiser De Ruyter

1937: Royal Dutch Navy Minesweeper Pieter Florisz

1942: Royal Indian Navy Minesweeper Baluchistan (J 182) - Royal Navy Minesweeper Greenock (J 182) - US Navy Minesweeper YMS-7 (YMS-7)

1943: US Navy Tank landing ship LST 208 (LST 208) - US Navy Patrol craft PCE-874 (PCE-874) - US Navy Motor torpedo boat PT 342

1944: Royal Canadian Navy Corvette Beauharnois (K 540) - Royal Navy Landing Craft Tank LCT 7038 (LCT 7038) - Royal Navy Landing Craft Tank LCT 7055 (LCT 7055) - US Navy Destroyer Escort Ebert (DE 768) - US Navy Landing Craft Infantry LCI(L)-612 (LCI(L)-612) - US Navy Landing Craft Infantry LCI(L)-685 (LCI(L)-685) - US Navy Landing Craft Infantry LCI(L)-997 (LCI(L)-997) - US Navy Landing Craft Infantry LCI(L)-998 (LCI(L)-998) - US Navy Landing Craft Infantry LCI(L)-999 (LCI(L)-999) - US Navy Landing craft tank LCT 1145 (LCT 1145) - US Navy Landing craft tank LCT 1292 (LCT 1292) - US Navy Landing craft tank LCT 903 (LCT 903) - US Navy Tank landing ship LST 566 (LST 566) - US Navy Tank landing ship LST 671 (LST 671) - US Navy Motor torpedo boat PT 538 - US Navy Minesweeper Success (AM 310) - US Navy Minesweeper Superior (AM 311)

1945: Royal Navy Rescue Tug Turmoil (W 169) - US Navy Tank landing ship LST 1146 (LST 1146) - US Navy Motor torpedo boat PT 601 - US Navy Motor torpedo boat PT 705

Commissioned (43)

1918: Royal Navy Destroyer Wessex (i) (D 43)

1920: US Navy Destroyer Parrott (DD 218)

1922: US Navy Submarine S-31 (136)

1923: US Navy Submarine S-38 (143)

1927: United States Coast Guard Patrol vessel Woodbury (WPC 155)

1937: Polish Navy Destroyer Grom (H 71)

1941: Free French Navy Corvette Mimosa (K 11) - Royal Navy Motor minesweeper MMS 5 (J 505)

1942: Royal Australian Navy Minesweeper Cairns (J 183) - Royal Navy MS Trawler Earraid (T 297) - Royal Navy Harbour Defence Motor Launch HDML 1158 (ML 1158) - Royal Navy Harbour Defence Motor Launch HDML 1209 (ML 1209) - US Navy Destroyer Bailey (ii) (DD 492) - US Navy Oiler Mattaponi (AO 41) - US Navy Submarine chaser SC-526 (SC-526) - US Navy Submarine chaser SC-527 (SC-527) - US Navy Minesweeper YMS-43 (YMS-43)

1943: Royal Navy MS Trawler Gateshead (T 288) - Royal Navy Landing Craft Tank LCT 575 (LCT 575) - Royal Navy Motor minesweeper MMS 274 (J 774) - US Navy Destroyer Braine (DD 630)

1944: Royal Canadian Navy Corvette Cobourg (K 333) - Royal Navy Frigate Halladale (K 417) - Royal Navy Frigate Monnow (K 441) - Royal Navy Destroyer Wessex (ii) (R 78) - US Navy Minesweeper Control (AM 164) - US Navy Landing Craft Infantry LCI(L)-1021 (LCI(L)-1021) - US Navy Landing Craft Infantry LCI(L)-1063 (LCI(L)-1063) - US Navy Landing Craft Infantry LCI(L)-608 (LCI(L)-608) - US Navy Landing Craft Infantry LCI(L)-756 (LCI(L)-756) - US Navy Tank landing ship LST 909 (LST 909) - US Navy Destroyer Escort Oberrender (DE 344) - US Navy Motor torpedo boat PT 472 - US Navy Motor torpedo boat PT 532

1945: Royal Navy Rescue Tug Encore (W 179) - Royal Navy Tank landing ship LST 3009 (LST 3009) - Royal Navy Minesweeper Magicienne (J 436) - Royal Navy Motor Torpedo Boat MTB 505 (MTB 505) - Royal Navy MS Trawler Orsay (T 450) - US Navy Destroyer Hanson (DD 832) - US Navy Medium landing ship LSM 497 (LSM 497) - US Navy Motor torpedo boat PT 644

1946: US Navy Aircraft carrier Phillipine Sea (CV 47)

Legend:

Laid down means that the ship's construction was officially started by laying down the keel (often just a single steel beam but could also mean the first of many pre-fabricated sections).

Launched means that the ship was launched from its shipyard, it then began its fitting out period (installation of smaller systems, weapons etc.) - in many yards the ships were launched very complete and needed little work afterwards.

Commissioned is when the navy takes the ship officially over and gives command of it to its new captain.

War Losses on 11 May (5)


1941: Royal Navy Submarine Undaunted (i) (N 55)

1942: Royal Navy Destroyer Kipling (F 91) - Royal Navy Destroyer Lively (G 40) - US Navy Oiler Neosho (i) (AO 23)

1943: Royal Navy Motor Launch ML 133 (ML 133)

More information on Allied Warships losses.


General Events on 11 May


1940

Royal Dutch Navy Destroyer HNMS Isaac Sweers: About one hours after midnight the Dutch tug Zwarte Zee (Master T. Vet) took the unfished Dutch destroyer Isaac Sweers in tow towards the Downs. On board the Isaac Sweers were ten naval personnel under the leadership of Lt. H.A.V.R. Baron van Lawick, RNN and six civilians. Shortly after departure a formation of German aircraft dropped four magnatic mines in the path of the tug and the unfished destroyer but they were able to evade these mines and continue their passage to the Downs where they arrived late in the morning of the 11th. At 0700/12 they departed for Spithead where they arrived at 1900 that day. The unfinished Isaac Sweers remained there for about a month before she was moved to the Thornycroft shipyard at Southampton where she would be completed.

Royal Dutch Navy Submarine HNMS O 21: HrMs O 21 (Lt.Cdr. J.F. van Dulm, RNN), HrMs O 22 (Lt.Cdr. A.M. Valkenburg, RNN) and their escort HrMs BV 37 (former tug Schelde) (Lt. A.J. Meijer, RNN(R)) arrive in the Downs where they anchor to await further orders.

Royal Dutch Navy Submarine HNMS O 22: HrMs O 22 (Lt.Cdr. A.M. Valkenburg, RNN), HrMs O 21 (Lt.Cdr. J.F. van Dulm, RNN) and their escort HrMs BV 37 (former tug Schelde) (Lt. A.J. Meijer, RNN(R)) arrive in the Downs where they anchor to await further orders.

Royal Dutch Navy Submarine HNMS O 13: HrMs O 13 (Lt.Cdr. E.H. Vorster, RNN) arrived at the Downs escorted by minesweeper HrMs Jan van Gelder (Lt. P.L.M. van Geen, RNN).

Royal Dutch Navy Submarine HNMS O 9: Late in the evening HrMs O 9 (Lt. J. Metz, RNN) enters Den Helder harbour.

Royal Dutch Navy Submarine HNMS O 10: Late in the evening HrMs O 10 (Lt. G. Quint, RNN(R)) enters Den Helder harbour.

Royal Navy Submarine HMS Clyde: HMS Clyde (Lt.Cdr. D.C. Ingram, RN) is ordered to patrol off Smøla, Norway to intercept a German transport that had been reported / sighted.

Royal Navy Submarine HMS Narwhal: Between 1701 and 1730 hours (zone -1) HMS Narwhal (Lt.Cdr. R.J. Burch, RN) laid minefield F.D. 12 (50 mines) off Bud, Norway in position 62°58'N, 06°48'E.

Royal Navy Submarine HMS Sturgeon: HMS Sturgeon (Lt. G.D.A. Gregory, DSO, RN) ended her 8th war patrol at Blyth.

Royal Navy Submarine HMS Tigris: HMS Tigris (Lt.Cdr. H.F. Bone, RN) arrived at Portsmouth for further outfitting.

Royal Navy Submarine HMS Tetrarch: HMS Tetrarch (Lt.Cdr. R.G. Mills, RN) left dock.

Royal Indian Navy Sloop HMIS Hindustan: HMIS Hindustan (Cdr. G.V.G. Beamish, RIN) departed Karachi for the Persian Gulf.

Royal Navy Destroyer HMS Valentine (i): The British (AA) destroyers HMS Valentine (Cdr. H.J. Buchanan, RAN), HMS Winchester (Lt.Cdr. S.E. Crewe-Read, RN) and the French destroyers Sirocco (Lt.Cdr. G.R.C.M.J.M. de Toulouse-Lautrec) and Cyclone (Capt. Y.F.C.A.M. Urvoy de Portzamparc) departed Dunkirk for Flushing escorting the French transport Côte d'Argent (3047 GRT, built 1933). After arrival early in the afternoon HMS Valentine and HMS Winchester gave AA protection to the Breskens - Flushing ferry until dusk. Also the French transports Pavon (4128 GRT, built 1930) and Newhaven (1656 GRT, built 1911) were escorted in the Scheldt estuary.

Royal Navy Destroyer HMS Malcolm: HMS Malcolm (Capt. T.E. Halsey, RN) picks up 6 survivors from the British merchant Tringa that was torpedoed and sunk by German U-boat U-9 38 one and a half miles from the West Hinder buoy at the mouth of the river Scheldt in position 51°21'N, 02°55'E.

French Navy Submarine FR Amazone: Amazone (Lt. R.H.G. Richard) fires two torpedoes at a submarine off the Dutch coast in position 52°55'N, 04°28'E. Both German U-boat U-7 and HMS Shark reported being missed by torpedoes.

1941

Royal Navy Heavy cruiser HMS Cornwall: HMS Cornwall (Capt. P.C.W. Manwaring, RN) and HMS Glasgow (Capt. H. Hickling, RN) departed Port Victoria, Seychelles for Mauritius.

Royal Navy Heavy cruiser HMS Dorsetshire: HMS Dorsetshire (Capt. B.C.S. Martin, RN) departed Freetown to overtake and join convoy SL 74 at sea which she did shortly before noon the next day. More on convoy SL 74 see the event for 10 May 1941, Convoy SL 74, 10 May 1941 - 4 June 1941. For the daily positions of HMS Dorsetshire during the period from 11 May 1941 to 29 May 1941 see the map below.

Royal Navy Heavy cruiser HMS Exeter: HMS Exeter (Capt. O.L. Gordon, MVO, RN) arrived at Hvalfjord, Iceland from the Denmark Strait patrol. After fuelling she departed later the same day for Scapa Flow.

Royal Dutch Navy Submarine HNMS O 14: HrMs O 14 (Lt.Cdr. G. Quint, RNN(R)) departs Scapa Flow for Dundee. She is escorted by the British armed yacht HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN).

Royal Dutch Navy Submarine HNMS O 10: HrMs O 10 (Lt. J.H. Geijs, RNN) participated in A/S exercises off Lough Foyle together with HMS Skate (Lt. F.P. Baker, DSC, RN) and HMS Londonderry (Cdr. J.S. Dalison, RN).

Royal Navy Submarine HMS Ursula: HMS Ursula (Lt. A.J. Mackenzie, RN) ended her 19th war patrol (6th in the Mediterranean) at Malta.

Royal Navy Submarine HMS Unbeaten: HMS Unbeaten (Lt. E.A. Woodward, RN) departed Malta for her 3rd war patrol (2nd in the Mediterranean). She was ordered to patrol off Tripoli, Libya. For the daily and attack positions of HMS Unbeaten during this patrol see the map below.

Royal Navy Submarine HMS Pandora: HMS Pandora (Lt.Cdr. J.W. Linton, DSC, RN) attacked an unescorted tanker south of Licosa Point. Four torpedoes in all were fired but none hit the target. This may have been the water tanker Elisa (216 GRT, built 1903) on passage from Trapani to Tripoli. The attack was unobserved. (All times are zone -1) 1604 hours - In approximate position 40°03'N, 14°58'E sighted the funnel of a ship. Closed to investigate. The ship turned out to be a tanker of about 3500 tons. An attack was started. 1636 hours - Fired three torpedoes from 3000 yards. No hits were obtained and the 3rd torpedo was not heard to run. 1642 hours - Fired another torpedo. This torpedo also missed.

Royal Navy Submarine HMS Rorqual: Between 0530 and 0608 hours (zone -3) HMS Rorqual (Cdr R.H. Dewhurst, DSO, RN) laid 50 mines in the Gulf of Saloniki off Panomi Point. It is likely that this minefield accounted for the loss of the Roumanian Carmen Sylva (1601 GRT, built 1903) on 26 May and, the following day, that of the German Helene (ex Greek Eleni Kanavarioti, 797 GRT, built 1886).

Royal Navy Submarine HMS Seawolf: HMS Seawolf (Lt. P.L. Field, RN) departed Blyth for Portsmouth. For the daily positions of HMS Seawolf during this passage see the map below.

Royal Navy Submarine HMS Tribune: HMS Tribune (Lt.Cdr. R.G. Norfolk, RN) joins convoy HX-126 in position 42°55'N, 59°34'E.

Royal Navy Submarine HMS Truant: HMS Truant (Lt.Cdr. H.A.V. Haggard, RN) and the French merchant Gallium are intercepted by a Vichy French force of 1 destroyer and 4 submarines. Gallium contacted the destroyer and then set course to follow the French force. (All times are zone -1) 0150 hours - In position 36°50'N, 00°45'W, sighted a French destroyer and 4 submarines in line ahead. (This was the Vichy French torpedo boat La Bayonnaise and the submarines Diane, Eurydice, Thetis and Antiope.) 0158 hours - Gallium signalled the destroyer that she had been seized by the British submarine. 0200 hours - The French destroyer ordered Gallium to follow her. Gallium proceeded accordingly. 0220 hours - Truant signalled a protest to the French destroyer that Gallium had been ordered to proceed to Gibraltar for examination. The destroyer replied that she had been ordered to escort Gallium to France.

Royal Navy Submarine HMS Upright: HMS Upright (Lt. R.S. Brookes, DSC, RN) ended her 10th war patrol (8th in the Mediterranean) at Malta.

Royal Navy Submarine HMS Uproar: HMS P 31 (Lt. J.B.de B. Kershaw, RN) arrived at Scapa Flow where she was to participate in A/S exercises.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. D.S.R. Martin, RN) shifted from Oban to Tobermory. She was escorted by HMS L' Atlantique (Skr. A. McKay, RNR).

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. C.P. Norman, RN) conducted A/S exercises off Campbeltown with HMS Shemara (Cdr.(Retd.) H. Buckle, RN) and HMS Tuscarora (Lt.Cdr.(Retd.) N.T.B. Holt, RN).

Royal Navy Submarine HMS H 43: HMS H 43 (Lt. H.S. Mackenzie, RN) departed Sheerness for Rosyth. She made the passage in convoy FN 465.

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. W.N.R. Knox, DSC, RN) participated in A/S exercises off Campbeltown.

1942

Royal Dutch Navy Submarine HNMS O 14: HrMs O 14 (Lt.Cdr. H.A.W. Goossens, RNN) conducted A/S exercises at / off Scapa Flow with HMS Marne (Lt.Cdr. H.N.A. Richardson, DSC, RN) and HMS Hazard (Lt.Cdr. J.R.A. Seymour, RN).

Royal Navy Submarine HMS Otway: HMS Otway (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted exercises in the Clyde area with HMS Breda (Capt.(Retd.) A. E. Johnston, RN), HMS Z 5 (T/A/Lt.Cdr. S.T. Wenlock, RNR), HMS Alecto (Cdr. J.R.S. Brown, RN), HMS La Flore and HMS Vimy (Lt.Cdr. H.G.D. de Chair, RN).

Royal Navy Submarine HMS Sturgeon: HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN) shifted from Holy Loch to Elderslie for repairs to her main battery.

Royal Navy Submarine HMS Safari: HMS P 211 (Cdr. B. Bryant, DSC, RN) returned to Holy Loch.

Royal Navy Submarine HMS Sahib: P 212 (Lt. J.H. Bromage, DSC, RN) arrived at Holy Loch to begin a period of trials and training.

Royal Navy Submarine HMS P 222: HMS P 222 (Lt. A.J. MacKenzie, RN) conducted torpedo discharge trials off Arrochar.

Royal Navy Submarine HMS Thunderbolt: HMS Thunderbolt (Lt.Cdr. C.B. Crouch, DSO and Bar, RN) conducted exercises off Dartmouth.

Royal Navy Submarine HMS Turbulent: HMS Turbulent (Cdr. J.W. Linton, DSC, RN) departed from Alexandria for her 5th war patrol. She was ordered to patrol in the Gulf of Sirte. For the daily and attack positions of HMS Turbulent during this patrol see the map below.

Royal Navy Submarine HMS Utmost: HMS Utmost (Lt. A.W. Langridge, RN) conducted exercises in the Clyde area. These included a practice attack on HrMs Jan van Gelder (Lt.Cdr. P.L.M. van Geen, RNN).

Royal Navy Submarine HMS Ultimatum: HMS P 34 (Lt. P.R.H. Harrison, DSC, RN) departed Alexandria for Port Said.

Royal Navy Submarine HMS United: HMS P 44 (Lt. T.E. Barlow, RN) arrived at Gibraltar. She was escorted in by HMS Leyland (T/Lt. A.K. Nears, RNR).

Royal Navy Submarine HMS Unrivalled: HMS P 45 (Lt. H.B. Turner, RN) shifted from Arrochar to Holy Loch.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. R.E. Boddington, RN) conducted A/S exercises off Lough Foyle with HMS Honeysuckle (Lt. H.H.D. MacKillican, DSC, RNR), ORP Garland (Lt.Cdr. H. Eibel, ORP), HMS Totland (Lt.Cdr.(Emgy.) S.G.C. Rawson, RN) and HMS Weston (Cdr. (Retd.) J.G. Sutton, RN).

Royal Navy Submarine HMS H 32: HMS H 32 (Lt. J. Whitton, RN) participated in A/S exercises off Tobermory.

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. M.E. Faber, RN) participated in A/S exercises off Campbeltown. Upon completion of these exercises Lt. Lambert took over command of HMS H 33 from Lt. Faber.

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. R.P. Webb, RN) participated in A/S exercises off Tobermory. Upon completion of these exercises HMS H 44 set course for Rothesay.

US Navy Submarine USS S-42: USS S-42 (Lt. O.G. Kirk) torpedoed the Japanese minelayer Okinoshima (4470 tons, offsite link) west of Buka Island, Solomon Islands in position 05°06'S, 153°48'E. The Japanese minelayer is heavily damaged and sank the next day.

US Navy Submarine USS S-43: USS S-43 (Lt. E.R. Hannon) departed from Brisbane for her 1st war patrol. She was ordered to patrol the St. George's Channel.

Soviet Navy Submarine USSR M-172: M-172 fires two torpedoes against the German merchant Hartmut (2713 GRT) off the Varangerfjord. The torpedoes missed their target.

Royal Navy Submarine HMS L 26: HMS L 26 (Lt. H.D. Verschoyle, DSC, RN) conducted exercises in the Clyde area with a training class of new submariners.

Royal Navy Submarine HMS P 615: HMS P 615 (Lt. P.E. Newstead, RN) participated in A/S and attack exercises off Campbeltown.

1943

US Navy Battleship USS Iowa: USS Iowa (Capt. J.L. McCrea, USN) conducted trials and exercises in Chesapeake Bay.

Royal Dutch Navy Light cruiser HNMS Tromp: HrMs Tromp (Capt. J.B. de Meester, RNN) conducted exercises off Fremantle together with HrMs Jacob van Heemskerck (Capt. W. Harmsen, RNN).

Royal Dutch Navy Submarine HNMS O 24: HrMs O 24 (Lt.Cdr. W.J. de Vries, RNN) departed Colombo for her 19th war patrol (7th in the Far East). She was ordered to patrol North of Sumatra and in the Malacca Straits. For the daily and attack positions of HrMs O 24 during this patrol see the map below.

Royal Dutch Navy Submarine HNMS O 9: HrMs O 9 (Lt.Cdr. J.F. Drijfhout Van Hooff, RNN) participated in A/S exercises off Campbeltown with HMS L' Atlantique (Skr. A. McKay, RNR) and HMS Bretwalda (Skr.Lt. J.R. Coultas, RD, RNR).

US Navy Submarine USS Tautog: USS Tautog (Lt.Cdr W.B. Sieglaff) leaved Fremantle for her seventh war patrol. She is to patrol in the Flores / Celebes sea.

US Navy Submarine USS Grayback: USS Grayback (Lt.Cdr. E.C. Stephan) torpedoed and sank the Japanese collier Yodogawa Maru (6441 GRT) about 125 nautical miles north-west of Kavieng in position 00°47'S, 149°02'E.

US Navy Submarine USS Seadragon: USS Seadragon (Cdr. R.L. Rutter, USN) Topped off with fuel at Johnston Island before proceeding towards her patrol area.

US Navy Submarine USS Nautilus: USS Nautilus (Lt.Cdr. W.H. Brockman) lands the scouts at Attu five hours before the main assault.

US Navy Submarine USS Flying Fish: USS Flying Fish (Lt.Cdr. G.R. Donaho) ended her 5th war patrol at Midway.

US Navy Submarine USS Pogy: USS Pogy (Lt.Cdr. G.H. Wales) sank a Japanese sampan with gunfire east of Honshu, Japan in position 37°52'N, 143°12'E.

Royal Navy Submarine HMS Ursula: HMS Ursula (T/Lt. M.D. Tattersall, RNVR) participated in A/S exercises off Larne.

Royal Navy Submarine HMS Sealion: HMS Sealion (Lt. N.J. Coe, DSC, RNR) conducted attack exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) during which HMS L 27 (Lt.Cdr. W.N. Eade, RNR) served as the target.

Royal Navy Submarine HMS Sceptre: HMS Sceptre (Lt. I.S. McIntosh, MBE, DSC, RN) conducted attack exercises in the Clyde area during which HMS Boadicea (Lt.Cdr. F.C. Brodrick, RN) and HMS Lancaster (T/A/Lt.Cdr. J.R. Clarke, DSC, RNVR) served as the targets. These included night exercises.

Royal Navy Submarine HMS Syrtis: HMS Syrtis (Lt. M.H. Jupp, DSC, RN) conducted noise trials in Loch Goil.

Royal Navy Submarine HMS Trooper: HMS Trooper (Lt. J.S. Wraith, DSO, DSC, RN) departed from Algiers for Malta. For the daily positions of HMS Trooper during this passage see the map below.

Royal Navy Submarine HMS Tactician: HMS Tactician (Lt.Cdr. A.F. Collett, DSC, RN) ended her 3rd war patrol (2nd in the Mediterranean) at Algiers.

Royal Navy Submarine HMS Templar: HMS Templar (Lt. D.J. Beckley, DSO, RN) departed Larne for Holy Loch.

Royal Navy Submarine HMS Upright: HMS Upright (Lt. P.R.H. Harrison, DSO, DSC, RN) conducted exercises of Blyth training a class of new submariners.

Royal Navy Submarine HMS Unruffled: HMS Unruffled (Lt. J.S. Stevens, DSO, DSC, RN) ended her 15th war patrol (14th in the Mediterranean) at Malta.

Royal Navy Submarine HMS Unsparing: HMS Unsparing (Lt. A.D. Piper, DSC and 2 bars, RNR) departed Portsmouth for Gibraltar. She was escorted until 2217/12 by HMS Lord Wakefield (Skr.Lt. H.L. Lang, DSC, RD, RNR). For the daily positions of HMS Unsparing during this passage see the map below.

Royal Navy Submarine HMS Upstart: HMS Upstart (Lt. P.C. Chapman, DSC and Bar, RN) conducted A/S exercises in Lough Foyle with USS Greene (Lt.Cdr. J.S. Lewis, USN), HMS Chanticleer (Lt.Cdr. R.H. Bristowe, DSO, RN), USS Lea (Lt.Cdr. D.I. Thomas, USN) and USS Osmond Ingram (Lt.Cdr. N.J. Sampson, USN). Upon completion of the exercises Upstart departed Lough Foyle for Holy Loch escorted by HMS Chanticleer.

Royal Navy Submarine HMS H 32: HMS H 32 (Lt. T.G. Ridgeway, RN) participated in special trials / exercises off Dartmouth with aircraft.

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. J.A. Spender, RN) conducted A/S exercises off Lough Foyle with HMS Lowestoft (A/Cdr.(Retd.) L.H. Phillips, RN), USS Belknap and USS Badger.

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. R. Bannar-Martin, RN) conducted A/S exercises off Campbeltown with HMS Spaniel and HMS Boarhound (Skr. A. Keable, RNR).

Royal Navy Submarine HMS P 511: HMS P 511 (Lt. J.S. Launders, RN) conducted A/S exercises off Campbeltown with HMS Shemara (Cdr.(Retd.) H. Buckle, RN), HMS Bedlington (Skr. J.H.D. Dansie, RNR) and HMS L'Incomprise (Lt.(Retd.) F.S. Deveson, RNR).

Royal Navy Sloop HMS Fleetwood: German U-boat U-528 was sunk in the North Atlantic south-west of Ireland, in position 46°55'N, 14°44'W, by depth charges from a British Handley Page Halifax aircraft (Sqdn. 58/D) and by depth charges from the British sloop HMS Fleetwood (Cdr. W.B. Piggot, OBE, RNR).

US Navy Submarine USS S-41: USS S-41 (Lt. I.S. Hartman) arrived at Dutch Harbour, Alaska.

US Navy Submarine USS R-2: USS R-2 (Lt. A.K. Tyree, USN) conducted exercises off Key West.

US Navy Submarine USS R-11: USS R-11 (Lt.Cdr. W.B. Parham, USN) conducted exercises off Key West.

US Navy Submarine USS R-12: USS R-12 (Lt.Cdr. E.E. Shelby, USN) arrived at Key West, Florida from New London, Connecticut.

US Navy Submarine USS R-13: USS R-13 (Lt. D.L. Mehlop, USN) conducted exercises off Key West.

US Navy Submarine USS R-14: USS R-14 (Lt. R. Holden, USN) conducted exercises off Key West.

Soviet Navy Submarine USSR A-3: A-3 fires two torpedoes at the German barges Mal 1, Mal 2 and Mal 3 off Yalta in position 44°22'N, 34°05'E. The targets are not hit.

Royal Navy Submarine HMS L 26: HMS L 26 (Lt. H.D. Verschoyle, DSC, RN) conducted exercises in the Clyde area with a training class of new submariners.

Royal Navy Submarine HMS P 614: HMS P 614 (Lt. H.W. Wilkinson, RN) arrived at Simonstown.

1944

US Navy Destroyer USS Laffey (ii): USS Laffey (Cdr. F.J. Beston) departed from New London bound for New York.

Royal Dutch Navy Submarine HNMS O 15: HrMs O 15 (Lt. J.B.M.J. Maas, RNN) conducted A/S exercises off Campbeltown with HMS Bretwalda (Skr. J.B. Henderson, RNR) and HMS L' Atlantique (Skr. C.A. Collins, RNR).

US Navy Submarine USS Sturgeon: USS Sturgeon (Lt.Cdr. C.L. Murphy, Jr) torpedoed and sank the Japanese transport ship Seiryu Maru (1904 GRT) about 140 nautical miles north of Chichi Jima in position 29°41'N, 141°35'E.

US Navy Submarine USS Rasher: USS Rasher (Lt.Cdr. W.R. Laughon) torpedoed and sank the Japanese auxiliary vessel Choi Maru (1074 GRT) in the Molucca Sea northwest of Boeroe Island in position 03°30'S, 126°06'E.

US Navy Submarine USS Cabrilla: USS Cabrilla (Cdr. W.C. Thompson, Jr., USN) arrived at Exmouth Gulf. After repairs had been completed she departed later the same day.

US Navy Submarine USS Crevalle: USS Crevalle (Cdr. F.D. Walker, USN) evacuates 28 women and children from Negros Island, Philippines. Course was then set for Darwin, Australia.

US Navy Submarine USS Seahorse: USS Seahorse (Lt.Cdr. S.D. Cutter) ended her 4th war patrol at Brisbane, Australia.

US Navy Submarine USS Sand Lance: USS Sand Lance (Lt.Cdr. M.E. Garrison) torpedoed and sank the Japanese troop transport Mitakesan Maru (4441 GRT) off Tinian in position 14°57'N, 145°15'E.

Royal Navy Submarine HMS Una: HMS Una (Lt. C.A.J. Nicholl, RN) conducted A/S exercises off Tobermory with HMS Awe (Lt.Cdr. H.P. Carse, DSC, RNVR), HMS Capel (Lt. B.G. Heslop, DSC, RN), HNoMS Tunsberg Castle and FFS Commandant d'Estienne d'Orves .

Royal Navy Submarine HMS Clyde: HMS Clyde (Lt.Cdr. R.S. Brookes, DSO, DSC, RN) arrived at Malta.

Royal Navy Submarine HMS Porpoise: HMS Porpoise (Lt.Cdr. H.A.L. Marsham, OBE, RN) arrived at Malta.

Royal Navy Submarine HMS Safari: HMS Safari (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted attack exercises for the C.O.Q.C. (Commanding Officers Qualifying Course) in the Clyde area during which HMS Braithwaite (Lt.Cdr. E.M. Mackay, RD, RNR) and HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR) served as the targets.

Royal Navy Submarine HMS Sibyl: HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) commenced her refit at Blyth.

Royal Navy Submarine HMS Seraph: At 2120 hours (zone -2), HMS Seraph (Lt. T. Russell-Walling, RN), lost depth control as 'A' tank suddenly flooded, and hit bottom at 498 feet. Damage was severe, there were several leaks, her main motors were flooded and she was unable to dive. It took almost four hours to effect repairs and several attempts were undertaken before Seraph finally surfaced. Contact with Coastal Command aircraft was established at 0500/12 and a message was passed to her to relay as Seraph's own W/T set was out of action. At 2020/12 contact was made with a USAAF Liberator and another message was passed to this aircraft requesting assistance and an escort. As of the early morning hours of the 13th aircraft remained with Seraph until the 3rd Escort Group arrived with the frigates HMS Domett (T/A/Lt.Cdr. S. Gordon, RNVR) and HMS Berry (T/A/Lt.Cdr. C.S. Pirie, RNVR). The 3rd Escort Group however left after about 1 hour but later returned. The trawler HMS Neave (T/Lt. T. Ross, RNVR) and and tug HMS Abeille IV arrived during the day and relieved the two frigates.

Royal Navy Submarine HMS Sickle: At 1800 hours (zone -3) HMS Sickle (Lt. J.R. Drummond, DSO, DSC, RN) bombarded an enemy radar station off Chersonisis, Crete, Greece. At 1804 hours the enemy returned fire and soon three of the bridge crew of Sickle were wounded including the commanding officer so at 1811 the action was broken off and Sickle dived. A large column of smoke was rising from the radar station and it had been hit about 17 times. Some damage must have been done. The station was Flugmeldung Posten 34, fire was returned by the “Melsa” battery.

Royal Navy Submarine HMS Spiteful: HMS Spiteful (Lt.Cdr. F.H. Sherwood, DSC, RCNVR) conducted exercises off Trincomalee.

Royal Navy Submarine HMS Stratagem: HMS Stratagem (Lt. C.R. Pelly, DSC, RN) departed Malta for Port Said.

Royal Navy Submarine HMS Spark: HMS Spark (Lt. D.G. Kent, RN) conducted torpedo discharge trials at Arrochar. On completion of these trials she proceeded to Holy Loch.

Royal Navy Submarine HMS Shalimar: HMS Shalimar (Lt. W.G. Meeke, DSC, MBE, RN) shifted from Campbeltown to Holy Loch.

Royal Navy Submarine HMS Statesman: HMS Statesman (Lt. R.G.P. Bulkeley, RN) was docked in AFD 20 at Rothesay.

Royal Navy Submarine HMS Tribune: HMS Tribune (Lt.Cdr. W.N. Eade, RNR) conducted exercises off Blyth with a training class of new submariners.

Royal Navy Submarine HMS Trusty: HMS Trusty (Lt. E.T. Stanley, DSO, DSC, RN) conducted attack exercises at / off Scapa Flow.

Royal Navy Submarine HMS Telemachus: HMS Telemachus (Cdr. W.D.A. King, DSO, DSC, RN) arrived at Malta.

Royal Navy Submarine HMS Terrapin: HMS Terrapin (Lt.Cdr. D.S.R. Martin, DSO and 2 bars, RN) arrived at Gibraltar.

Royal Navy Submarine HMS Unrivalled: HMS Unrivalled (Lt. D.S. Brown, RNVR) conducted exercises off Morecambe Bay.

Royal Navy Submarine HMS Unruffled: HMS Unruffled (Lt. R.F. Park, RN) shifted from Portland to Plymouth.

Royal Navy Submarine HMS Ultor: HMS Ultor (Lt. G.E. Hunt, DSC and Bar, RN) claimed the sinking of a German KT ship (Kriegstransporter) off Cape Nègre, France. This was not confirmed by German records. (All times are zone -2) 1355 hours - Sighted smoke bearing 283° thought to be a vessel coast crawling eastward. Could not see the vessel itself. Commenced running in towards the coast. 1408 hours - Started attack on vessel now in sight to the west of Cape Nègre. It looked to be an UJ boat but continued to run in until the enemy could be positively identified. 1420 hours - The enemy was now seen to be a KT ship (Kriegstransporter) with two R-boats as escort, both to seaward, one on the beam and on on the starboard bow. 1438 hours - In position 43°07'5"N, 06°29'25"E fired two torpedoes at the KT ship from 1000 yards. One hit the target amidships breaking its back. 1455 hours - Returned to periscope depth. One R-boat was seen stopped near the place of the attack with the other one patrolling to seaward of her. No sign of the target which must have sunk. Went deep again and retired to the east.

Royal Navy Submarine HMS Varangian: HMS Varangian (Lt. S.J. Fovargue, RN) conducted A/S exercises off Lough Foyle with aircraft.

Royal Navy Submarine HMS Uther: HMS Uther (Lt. A.A. Catlow, RN) participated in A/S exercises off Campbeltown.

Royal Navy Submarine HMS Visigoth: HMS Visigoth (Lt. J.R.H. Haddow, DSC, RN) participated in exercises off Larne.

Royal Navy Submarine HMS Vivid: HMS Vivid (Lt. J.C. Varley, RN) ended her 2nd war patrol at Gibraltar.

Royal Navy Submarine HMS Voracious: HMS Voracious (Lt. F.D.G. Challis, DSC, RN) conducted A/S exercises at/off Scapa Flow with HMS Onslow (Capt. J.A. McCoy, DSO, RN), HMS Opportune (Cdr. J. Lee-Barber, DSO and Bar, RN), HMS Obedient (Lt.Cdr. H. Unwin, DSC and Bar, RN), HMS Oribi (Lt.Cdr. J.C.A. Ingram, DSC and Bar, RN) and HMS Speedy (A/Lt.Cdr. W.L.G. Dutton, RNR).

Royal Navy Submarine HMS Vox: HMS Vox (Lt. J.M. Michell, RN) conducted exercises off Gibraltar.

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. R.L. Jay, RN) participated in A/S exercises off Ardrishaig.

Royal Navy Submarine HMS H 50: HMS H 50 (T/Lt. A.F. Wicker, RNVR) conducted A/S exercises off Lough Foyle with (at least) HMCS Brandon (T/Lt. H.E. McArthur, RCNVR).

Royal Navy Submarine HMS P 511: HMS P 511 (Lt. E.A. Hobson, DSC, RN) participated in A/S exercises off Campbeltown.

US Navy Submarine USS R-10: USS R-10 (Lt.Cdr. G.F. Sharp, USN) conducted exercises off Key West.

US Navy Submarine USS R-11: USS R-11 (Lt.Cdr. W.B. Parham, USN) conducted exercises off Key West.

US Navy Submarine USS R-13: USS R-13 (Lt.Cdr. D.L. Mehlop, USN) conducted exercises off Key West.

US Navy Submarine USS R-14: USS R-14 (Lt.Cdr. R. Holden, USN) conducted exercises off Key West.

US Navy Submarine USS R-20: USS R-20 (Lt.Cdr. J.B. Dudley, USN) conducted exercises off Key West.

Soviet Navy Submarine USSR L-4: L-4 torpedoed and damaged the German tanker Friederike (7327 GRT, former French Firuz) north-east of Constanta, Romania in position 43°42'N, 29°15'E.

Soviet Navy Submarine USSR M-62: M-62 fires two torpedoes against the Romanian auxiliary minelayer Dacia in position 44°41'N, 31°33'E. Both torpedoes missed their target.

Soviet Navy Submarine USSR M-35: M-35 fires two torpedoes against an enemy convoy and claims the sinking of a barge east of the Romanian coast in position 43°46'N, 29°39'E.

Soviet Navy Submarine USSR ShCh-201: ShCh-201 fires two torpedoes against the German auxiliary submarine chaser UJ 105 in the Black Sea about 100 nautical miles east of Constanta, Romania in position 44°14'N, 30°58'E. Both torpedoes missed their target.

1945

US Navy Destroyer USS Hugh W. Hadley: While on radar picked duty of Okinawa USS Hugh W. Hadley (Cdr. Baron Joseph Mullaney) is heavily damaged by Japanese kamikaze aircraft in position 26°59'N, 127°32'E. The damaged destroyer was towed to the Le Shima anchorage. The Commanding officer was wounded.

US Navy Destroyer USS Strong (ii): USS Strong (Cdr. C.M. Howe) completes her shakedown.

US Navy Submarine USS Permit: USS Permit departed the Philadelphia Navy Yard for New London, Connecticut.

US Navy Submarine USS Bluegill: USS Bluegill (Cdr. E.L. Barr, Jr.) departed from Subic Bay for her 6th war patrol. She was ordered to patrol in the South China Sea.

US Navy Submarine USS Gunnel: With her overhaul completed USS Gunnel (Lt.Cdr. G.E. O'Neil, Jr.) arrived back at Pearl Harbor.

US Navy Submarine USS Apogon: USS Apogon (Cdr. A.C. House Jr., USN) arrived at Pearl Harbour. A period of training now followed before Apogon would be sent on another war patrol.

US Navy Submarine USS Catfish: USS Catfish (Lt.Cdr. W.A. Overton, USNR) arrived at Key West.

US Navy Submarine USS Entemedor: USS Entemedor (Lt.Cdr. W.R. Smith, Jr., USN) conducted exercises in the New London Area together with USS Trumpeter (Lt.Cdr. G.B. Buck, Jr., USNR), USS Straub (Lt.Cdr. J.E. Coie, Jr., USNR) and USS USS Cutlass (Cdr. H.L. Jukes, USN).

Royal Navy Submarine HMS Otway: HMS Otway (Lt. W.H. Kett, DSC, RNR) was undocked.

Royal Navy Submarine HMS Rorqual: HMS Rorqual (Lt. J.P.H. Oakley, DSC, RN) sank a coaster with gunfire in the Sunda Strait. (All times are zone -9) 0930 hours - In position 05°51'S, 105°57'E. Sighted a coaster bearing 260°. 1000 hours - Started a torpedo attack. 1023 hours - By now the target was seen to be a 700 tons coaster, heavily laden, armed with machine guns and flying the Japanese flag. 1029 hours - Surfaced for gun action. Range was 2200 yards. 1034 hours - The target was sinking after 15 hits out of 21 rounds fired. Dived. There had been no return fire. 1036 hours - The target sank in position 05°54'S, 105°47'2"E.

Royal Navy Submarine HMS Spiteful: HMS Spiteful (Lt.Cdr. F.H. Sherwood, DSC, RCNVR) arrived at Malta.

Royal Navy Submarine HMS Spark: HMS Spark (Lt. D.G. Kent, RN) Topped off with fuel at Exmouth Gulf.

Royal Navy Submarine HMS Scythian: HMS Scythian (T/Lt C.P. Thode, RNZNVR) sinks the Japanese coaster Akiyama Maru no. 10 and two Japanese landing craft with gunfire in the Malacca Straits. (All times are zone -6.5) 0510 hours - Sighted a coaster, anchored in our area. As the light improved it was seen to be a Japanese coaster of about 100 tons. 0550 hours - Surfaced in position 02°36'N, 100°31'E and opened fire from 4000 yards. 60 Rounds were fired with about 20 hits. As there was no sign of the coaster sinking, closed to examine the wreck. Eight survivors were picked up. The wreck was very low in the water and was found to be wrecked by gunfire but it would not sink. Several items and papers were taken off the wreck. 0842 hours - Dived in position 02°45'N, 100°32'E and commenced the interrogation of the prisoners (which included two Japanese). -------------------------------------------- 1605 hours - In position 02°45'N, 100°31'E sighted two landing craft examening the wreckage of the coaster. Closed submerged and found that they were 'A'-type Japanese landing craft well laden with Japanese soldiers. 1639 hours - Surfaced and opened fire from 3000 yards. Unfortunately the Oerlikon jammed. The enemy now opened fire with a (6-pdr) gun. One of the landing craft was meanwhile hit, but by this time Scythian was hit twice on the casing. 1648 hours - Dived to open the range. Shortly after diving one of the landing craft was seen to sink. 1705 hours - Surfaced to attack the remaining landing craft which was endeavouring to escape. 33 Rounds were fired from a range of 4000 yards and the landing craft sank, having put up no further opposition. The sites of both sinkings were visited and a number of dead Japanese soldiers, complete with tin hats were found floating in their life jackets.

Royal Navy Submarine HMS Surf: HMS Surf (Lt. H.W. Wilkinson, RN) conducted exercises in the Clyde area.

Royal Navy Submarine HMS Stygian: HMS Stygian (Lt. G.S.C. Clarabut, DSO, RN) departed Fremantle for passage to Subic Bay, Philippines. For the daily positions of HMS Stygian during this passage see the map below. HMS Stygian passage Fremantle - Subic Bay click here for bigger map

Royal Navy Submarine HMS Sleuth: HMS Sleuth (Lt. K.H. Martin, RN) and HMS Solent (Lt.Cdr. J.D. Martin, DSC, RN) both arrive at Exmouth Gulf. Lt. K.H. Martin left Sleuth there with a fever. The 1st Lt. temporary took command until Lt. J.C. Ogle took over on the 13th for the passage to Subic Bay.

Royal Navy Submarine HMS Solent: HMS Solent (Lt.Cdr. J.D. Martin, DSC, RN) and HMS Sleuth (Lt. K.H. Martin, RN) both arrive at Exmouth Gulf.

Royal Navy Submarine HMS Spearhead: HMS Spearhead (T/A/Lt.Cdr. R.E. Youngman, RNR) departed Malta for Suez.

Royal Navy Submarine HMS Sanguine: HMS Sanguine (T/Lt. P.C.S. Pritchard, RNR) departed her builders yard for Holy Loch. She was escorted by HMS Bridgewater (Cdr.(Retd.) M.W. Ewart-Wentworth, RN).

Royal Navy Submarine HMS Tribune: HMS Tribune (Lt. J.P. Fyfe, DSC, RN) conducted exercises off Blyth with a training class of new submariners.

Royal Navy Submarine HMS Tuna: HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises.

Royal Navy Submarine HMS Torbay: HMS Torbay (Lt.Cdr. C.P. Norman, DSO, RN) suffers an serious engine failure. The patrol has to be abandoned and course is set to return to Trincomalee.

Royal Navy Submarine HMS Tactician: HMS Tactician (Lt.Cdr. L.N.A. Jewell, DSC, MBE, RN) conducted gunnery exercises in the Clyde area.

Royal Navy Submarine HMS Taurus: HMS Taurus (A/Lt.Cdr. P.E. Newstead, DSC, RN) arrived at Gibraltar. She departed from for Malta later the same day.

Royal Navy Submarine HMS Trespasser: HMS Trespasser (Lt. L.E. Herrick, DSC, RN) conducted attack exercises in the Clyde area during which HMS Hastings (A/Cdr. E.A. Stocker, DSC, RN) served as the target.

Royal Navy Submarine HMS Tantalus: HMS Tantalus (Lt.Cdr. H.S. Mackenzie, DSO and Bar, RN) arrived at Malta.

Royal Navy Submarine HMS Terrapin: HMS Terrapin (Lt. R.H.H. Brunner, DSC, RN) made the northbound passage of Lombok Strait.

Royal Navy Submarine HMS Thorough: During 11/12 May 1945, HMS Thorough (Lt. A.G. Chandler, RNR), conducted exercises off Fremantle. These included night exercises.

Royal Navy Submarine HMS Tradewind: HMS Tradewind (Lt. J. Nash, DSC, RN) ended her 8th war patrol at Fremantle.

Royal Navy Submarine HMS Trenchant: During 11/12 May 1945, HMS Trenchant (Cdr. A.R. Hezlet, DSO, DSC, RN), conducted exercises off Fremantle, these included night exercises.

Royal Navy Submarine HMS Trump: HMS Trump (Lt. A.A. Catlow, RN) begins her northbound passage of Lombok Strait. At 1803 hours (time zone -9) while she was still south of Lombok Strait in position 09°07'S, 115°39'E she was attacked by a twin-engined aircraft that came in very low. Trump crash dived. The aircraft dropped one bomb causing minor damage forward.

Royal Navy Submarine HMS Taciturn: HMS Taciturn (Lt.Cdr. E.T. Stanley, DSO, DSC, RN) conducted exercises off Fremantle. These included night exercises.

Royal Navy Submarine HMS Uproar: HMS Uproar (Lt. J.N. Devlin, DSC, RN) conducted A/S exercises off Campbeltown with HMS Clover (Lt. R.P. Booth, RNVR), HMS Radiant (T/A/Lt.Cdr. A. Wallace, RNVR), HMS Carnation (T/Lt. W.R. Fowler, RNVR) and HMS Bedlington (A/Ch.Skr. A.W. Peak, RNR).

Royal Navy Submarine HMS Unruly: HMS Unruly (T/Lt. D.J. Palmer, RNVR) conducted A/S exercises off Campbeltown with HMS ML 472 (T/Lt. J.M.W. Hardie, RNVR) and HMS HDML 1029 (T/Lt. N.A.W. Herboldt, RNVR).

Royal Navy Submarine HMS Untamed: HMS Vitality (Lt. W.T.J. Fox, RN) conducted exercises in the Clyde area.

Royal Navy Submarine HMS Virtue: HMS Virtue (Lt. R.D. Cairns, DSC, RN) participated in A/S exercises off Sydney.

Royal Navy Submarine HMS Visigoth: HMS Visigoth (Lt. C.H. Hammer, RN) departed Trincomalee for Colombo.

Royal Navy Submarine HMS Vulpine: HMS Vulpine (Lt. W.D.S. Scott, RN) conducted A/S exercises off Campbeltown with HMS Astravel (T/Lt. D.E. Lewis, RNVR) and HMS Boarhound (Skr. A.G.G. Jenner, RD, RNR).

Royal Navy Submarine HMS H 50: HMS H 50 (T/Lt. G.P. Christie, DSC, RNR) conducted special trials in the Clyde area.

US Navy Submarine USS R-4: USS R-4 (Lt. D.C. Peto, USN) conducted exercises off Key West.

US Navy Submarine USS R-10: USS R-10 (Lt. R.D. McWenthy, USN) conducted exercises off Key West.

US Navy Submarine USS R-18: USS R-18 conducted exercises off Key West.

US Navy Submarine USS R-20: USS R-20 (Lt.Cdr. J.B. Dudley, USN or Lt. R.G. Black, USNR) conducted exercises off Key West.

US Navy Submarine USS Conger: USS Conger (Lt.Cdr. H.D. Sipple, USN) departed New London, Connecticut for Bar Harbour, Maine to conduct torpedo firing tests.

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