Allied Warships

Events on this day

22 April

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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 (27)

1918: US Navy Destroyer Biddle (DD 151)

1931: Royal Navy Destroyer Delight (H 38)

1940: Free French Navy Corvette Mimosa (K 11) - Royal Navy Minelayer M 5 (M 74) - Royal Navy Corvette Mimosa (K 11) - US Navy Anti-aircraft cruiser Atlanta (i) (CL 51)

1941: Royal Navy Minelayer M 6 (M 94)

1942: Royal Navy Minesweeper Friendship (J 398) - Royal Navy MS Trawler Oxna (T 296) - US Navy Motor torpedo boat PT 119 - US Navy Motor torpedo boat PT 120 - US Navy Submarine chaser SC-742 (SC-742)

1943: Royal Navy Minesweeper BYMS 2142 (J 942) - Royal Navy Corvette Knaresborough Castle (K 389) - Royal Navy Corvette Leeds Castle (K 384) - US Navy Destroyer Escort Lake (DE 301) - US Navy Landing Craft Infantry LCI(L)-434 (LCI(L)-434) - US Navy Tank landing ship LST 275 (LST 275) - US Navy Destroyer Escort Lyman (DE 302) - US Navy Destroyer Escort Tatum (DE 789) - US Navy Minesweeper YMS-142 (YMS-142) - US Navy Minesweeper YMS-293 (YMS-293)

1944: US Navy Landing craft tank LCT 1055 (LCT 1055) - US Navy Landing craft tank LCT 1056 (LCT 1056) - US Navy Landing craft tank LCT 792 (LCT 792) - US Navy Tank landing ship LST 676 (LST 676) - US Navy Tank landing ship LST 775 (LST 775)

Launched (56)

1909: Royal Navy MS Trawler Estrella d'Alva (FY 1927)

1913: Royal Navy MS Trawler Chassiron (FY 1857)

1916: Royal Navy MS Trawler Sethon (FY 883)

1925: Royal Navy Armed Merchant Cruiser Scotstoun

1929: Royal Navy MS Whaler Skudd 3 - Polish Navy Submarine Rys

1934: Italian Navy Light cruiser Emanuelle Filiberto Duca d’Aosta

1936: US Navy Destroyer Downes (DD 375)

1940: Royal Navy Corvette Anemone (K 48) - Royal Navy Corvette Clematis (K 36) - Royal Navy Corvette Honeysuckle (K 27) - Royal Navy Destroyer Lightning (G 55) - Royal Navy Escort destroyer Quantock (L 58)

1941: Royal Australian Navy Minesweeper Geelong (J 201)

1942: US Navy Submarine chaser SC-663 (SC-663)

1943: Royal Indian Navy Sloop Kistna (U 46) - Royal Indian Navy Corvette Sind (ii) (K 274) - Royal Navy Frigate Aire (K 262) - Royal Navy Corvette Betony (K 274) - Royal Navy Minesweeper BYMS 2221 (J 1021) - Royal Navy Frigate Capel (K 470) - Royal Navy Frigate Cooke (K 471) - Royal Navy Salvage vessel Dispenser - Royal Navy MS Trawler Farne (T 353) - Royal Navy Landing Craft Tank LCT 714 (LCT 714) - Royal Navy ASW Trawler Pollock (T 347) - Royal Navy Salvage vessel Sea Salvor - Royal Navy Submarine Shalimar (P 242) - Royal Navy Destroyer Ulysses (R 69) - Royal Navy Destroyer Verulam (R 28) - Royal Navy MS Trawler Wallasea (T 345) - Royal Navy Minesweeper Waterwitch (J 304) - US Navy Fleet tug Abnaki (AT 96) - US Navy Destroyer Escort Fechteler (i) (DE 157) - US Navy Destroyer Laws (DD 558) - US Navy Motor torpedo boat PT 336 - US Navy Minesweeper YMS-221 (YMS-221)

1944: Royal Navy Motor minesweeper MMS 1085 (FY 1085) - Royal Norwegian Navy Motor minesweeper Orkla (FY 1085) - US Navy Landing Craft Infantry LCI(L)-1061 (LCI(L)-1061) - US Navy Landing Craft Infantry LCI(L)-985 (LCI(L)-985) - US Navy Landing Craft Infantry LCI(L)-986 (LCI(L)-986) - US Navy Landing Craft Infantry LCI(L)-987 (LCI(L)-987) - US Navy Landing craft tank LCT 748 (LCT 748) - US Navy Medium landing ship LSM 206 (LSM 206) - US Navy Medium landing ship LSM 256 (LSM 256) - US Navy Tank landing ship LST 742 (LST 742) - US Navy Tank landing ship LST 912 (LST 912) - US Navy Motor torpedo boat PT 444 - US Navy Escort carrier Salamaua (CVE 96) - US Navy Minesweeper YMS-411 (YMS-411) - US Navy Minesweeper YMS-473 (YMS-473)

1945: United States Coast Guard Cutter Winona (WPG 65) - US Navy Destroyer Charles P. Cecil (DD 835) - US Navy Light cruiser Galveston (CL 93) - US Navy Minesweeper YMS-437 (YMS-437)

Commissioned (28)

1919: US Navy Destroyer Biddle (DD 151)

1940: Royal Navy Corvette Clarkia (K 88)

1941: Royal Navy ASW Trawler Tango (T 146) - US Navy Destroyer Wilkes (DD 441)

1942: Royal Canadian Navy Minesweeper Guysborough (J 52) - US Navy Submarine chaser SC-540 (SC-540)

1943: Royal Indian Navy Motor Launch ML 474 (ML 474) - Royal Navy Harbour Defence Motor Launch HDML 1247 (ML 1247) - Royal Navy Harbour Defence Motor Launch HDML 1271 (ML 1271) - Royal Navy Harbour Defence Motor Launch HDML 1286 (ML 1286) - Royal Navy Landing Craft Tank LCT 574 (LCT 574) - Royal Navy Minesweeper Rattler (J 217) - US Navy Tank landing ship LST 203 (LST 203) - US Navy Patrol craft PC-1197 (PC-1197) - US Navy Motor torpedo boat PT 237 - US Navy Motor torpedo boat PT 238

1944: Royal Canadian Navy Minesweeper Daerwood (J 357) - Royal Navy Submarine Shalimar (P 242) - US Navy Landing Craft Infantry LCI(L)-596 (LCI(L)-596) - US Navy Landing Craft Infantry LCI(L)-676 (LCI(L)-676) - US Navy Landing Craft Infantry LCI(L)-751 (LCI(L)-751) - US Navy Tank landing ship LST 1009 (LST 1009) - US Navy Tank landing ship LST 553 (LST 553) - US Navy Tank landing ship LST 687 (LST 687) - US Navy Tank landing ship LST 734 (LST 734) - US Navy Motor torpedo boat PT 529 - US Navy Submarine Ronquil (396) - US Navy Submarine chaser SC-1492 (SC-1492)

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 22 April (7)


1941: Royal Hellenic Navy Minelayer Aliakmon - Royal Hellenic Navy Destroyer Ydra (D 97)

1943: Royal Navy ASW Trawler Herring (T 307) - US Navy Submarine Grenadier (i) (210)

1945: US Navy Landing craft support LCS(L)-15 (LCS(L)-15) - US Navy Submarine chaser SC-1019 (SC-1019) - US Navy Minesweeper Swallow (AM 65)

More information on Allied Warships losses.


General Events on 22 April


1940

Royal Navy Heavy cruiser HMS York: HMS York (Capt. R.H. Portal, DSC, RN) shifted from Scapa Flow to Rosyth.

Royal Navy Light cruiser HMS Manchester: HMS Manchester (Capt. H.A. Packer, RN) departed Scapa Flow for Rosyth.

Royal Navy Submarine HMS Ursula: HMS Ursula (Lt.Cdr. W.A.K.N. Cavaye, RN) departed Blyth for Wallsend. At Wallsend she was immediately docked for a refit by the Swan Hunter and Wigham Richardson Ltd. yard.

Royal Navy Submarine HMS Perseus (i): HMS Perseus (Lt.Cdr. P.J.H. Bartlett, RN) was taken in hand for repairs of 'an urgent defect'. Repairs were completed on 30 April.

Royal Navy Submarine HMS Swordfish: At 1210 hours HMS Swordfish (Lt. P.J. Cowell, RN), in position 58°39'N, 10°01'E, observed a convoy of six trawlers escorting eight drifters, steering 165°. Lt. Cowell refrained from attack because of their shallow draught. This was most probably the First German Drifter convoy (five drifters) returning from Oslo escorted by the patrol boats V 302, V 305 and V 308 and probably temporarily covered by the A/S group patrolling the entrance of the Kattegat.

Royal Navy Submarine HMS Triton: HMS Triton (Lt.Cdr. E.F. Pizey, RN) departed from Rosyth for her 9th war patrol. She was ordered to patrol off the south-west coast of Norway near Stavanger. For the daily and attack positions of HMS Triton during this patrol see the map below.

Royal Navy Submarine HMS Trident: HMS Trident (Lt.Cdr. G.M. Sladen, RN) departed from Rosyth for her 9th war patrol. She is to patrol off the south and later of the south-West coast of Norway. For the daily and attack positions of HMS Trident during this patrol see the map below.

Royal Navy Submarine HMS H 32: HMS H 32 (Lt. M.D. Wanklyn, RN) conducted A/S exercises off Portland with HMS Conqueror (Capt.(Retd.) E.T.R. Chambers, RN).

Royal Navy Sloop HMS Pelican: The anti-aircraft sloop HMS Pelican (Cdr. L.A.K. Boswell, D.S.O., RN), while on her way to the Romsdal Fjord carrying the personnel of the Naval Base party for Molde, was crippled by a German Ju-87 (Stuka) dive bomber. She was hit aft, setting off her depth charges. Pelican was towed to Lerwick and then to Chatham for repairs that lasted until early December 1940.

Royal Navy Battleship HMS Malaya: HMS Malaya (Capt. I.B.B. Tower, DSC, RN) departed Plymouth for Gibraltar. She was escorted but for the moment we have been unable to find out which destroyer(s) escorted her out. The destroyer escort parted company in the morning of the next day. [Possible destroyer escort was HMS Windsor, which also departed Plymouth on 22 April 1940.]

Royal Navy Battlecruiser HMS Repulse: HMS Repulse (Capt. E.J. Spooner, DSO, RN), HMS Havelock (Capt. E.B.K. Stevens, DSC, RN), HMS Havant (Lt.Cdr. A.F. Burnell-Nugent, RN) and HMS Fame (Cdr. P.N. Walter, RN) arrived at Scapa Flow.

Royal Navy Destroyer HMS Juno: HMS Ark Royal (Capt. A.J. Power, RN, flying the flag of Vice-Admiral L.V. Wells, CB, DSO, RN) departed Greeock around 0700 for Scapa Flow. She was being escorted by HMS Mashona (Cdr. W.H. Selby, RN), HMS Sikh (Cdr. J.A. Giffard, RN) and HMS Juno (Cdr. W.E. Wilson, RN). They arrived at Scapa Flow around 0800/23.

Royal Navy Destroyer HMS Kipling: HMS Kipling (Cdr. A. St. Clair-Ford, RN) arrived at Portsmouth.

French Navy Submarine FR Sfax: Sfax (Lieutenant De Vaisseau Marcel Julien Marie Groix) fires two torpedoes against a German ship (possibly the German merchant Palime (2863 GRT) west-north-west of Egersund, Norway in position 58°30'N, 05°30'E. Both torpedoes missed their target.

1941

Royal Navy Light cruiser HMS Liverpool: HMS Liverpool (Cdr. G.W.M. Ambrose, RN) is docked in the floating dock at Alexandria to make her fit for passage to the U.S.A.

Royal Navy Light cruiser HMS Manchester: HMS Manchester (Capt. H.A. Packer, RN) conducted gunnery exercises at Scapa Flow.

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 Sabre (Lt. Sir P.W. Gretton, DSC, RN), HMS Dianella (T/Lt. J.G. Rankin, RNR), HMS Kingcup (Lt. R.A.D. Cambridge, DSC, RNR) and HMS Sunflower (Lt.Cdr. J.T. Jones, RNR).

Royal Navy Submarine HMS Oberon: HMS Oberon (Lt.Cdr. E.F. Pizey, DSC, RN) arrived at Rothesay.

Royal Navy Submarine HMS Regent: HMS Regent (Lt.Cdr. H.C. Browne, RN) arrived of the Bay of Kotor. At 0630 hours she surfaced and entered the bay with her largest ensign flying from the masthead. The crew was at diving stations, the gun crew was on stand-by and all tubes had been brought to the ready. It was not known to Lt.Cdr. Browne what the situation was on the shore. Near a seaplane station contact was made with a group of Yuguslav officers. Two of them came to Regent in a small boat. When they came on board it was found out from one of them (a Lt.Cdr., the other was not an officer but a pilot) that the Germans had taken over the area and later had turned it over to the Italians. Lt.Cdr. Browne asked to contact the British minister and the Yugoslav Lt.Cdr. went back to the shore to telephone him. Regent then moved to another place where the British minister might be embarked. There they were met by another Yugoslav Lt.Cdr. and an Italian army Captain. Lt.Cdr. Browne was invited to go ashore and meat an Italian Admiral at Kotor before he was to be allowed to see the British minister. Lt.Cdr. Browne refused to leave Regent. Lt.Cdr. Browne then offered to sent one of his officers ashore. Lt. D. Lambert, RN then left Regent. An Italian Army officer went on board Regent as 'hostage'. During the afternoon, while waiting for Lt. Lambert to return, several Italian aircraft were seen flying round Regent. At 1535 hours two aircraft started dive bombing attacks. Regent then got underway to leave the bay. Regent was near-missed several times and damage was caused to her. It was decided to abandon the attempt to evacuate the British minister. Lt. Lambert must now also be left ashore. When outside the bay Regent dived and set course for the Straits of Otranto. When clear of the Straits a signal was sent to Capt. S.1 informing him of the situation and the damage done to Regent (the main damage was to her battery). Also three of the crew were injured including Lt.Cdr. Browne and the first lieutenant. Lt.Cdr. Browne decided to proceed to Malta for much needed medical attention for his first lieutenant.

Royal Navy Submarine HMS Clyde: HMS Clyde (Cdr. D.C. Ingram, DSC, RN) departed Plymouth for Holy Loch. She was escorted by the Free French minesweeper FFS La Moqueuse.

Royal Navy Submarine HMS Seawolf: HMS Seawolf (Lt. P.L. Field, RN) participated in A/S exercises at Scapa Flow.

Royal Navy Submarine HMS Trident: HMS Trident (Lt.Cdr. G.M. Sladen, DSC, RN) conducted attack exercises in the Clyde area during which HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN) served as target.

Royal Navy Submarine HMS Union: HMS Union (Lt. R.M. Galloway, RN) arrived at Gibraltar.

Royal Navy Submarine HMS Utmost: HMS Utmost (Lt.Cdr. R.D. Cayley, RN) ended her 7th war patrol (5th in the Mediterranean) at Malta.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. D.S.R. Martin, RN) participated in A/S exercises off Tobermory.

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. C.H. Rankin, RN) participated in A/S exercises off Campbeltown.

Royal Navy Submarine HMS H 50: HMS H 50 (Lt. P.R.H. Harrison, RN) arrived at Sheerness Roads.

Royal Hellenic Navy Minelayer RHS Aliakmon: Reported to have shot down a German aircraft.

1942

US Navy Destroyer USS Rowan: USS Rowan picks up 169 survivors from the American passenger ship San Jacinto that was torpedoed and sunk by German U-boat U-201 about 375 nautical miles southeast of Cape Hatteras, North Carolina in position 31°10'N, 70°45'W. USS Rowan also picks up 18 survivors from the American merchant Steel Maker that was torpedoed and sunk on 20 April 1942 by German U-boat U-654 350 nautical miles east of Wilmington, North Carolina in position 33°48'N, 70°36'W.

Royal Dutch Navy Destroyer HNMS Isaac Sweers: Around 0700 hours, HMS Caledon (A/Capt. H.J. Haynes, DSO, DSC, RN), HMS Griffin (Capt. H.St.L. Nicolson, DSO, RN), HMS Arrow (Cdr. A.M. McKillop, RN), HMS Hotspur (Lt. T.D. Herrick, DSC, RN) and HrMs Isaac Sweers (Cdr. W. Harmsen, RNN) returned to Mombasa from exercises.

Royal Dutch Navy Submarine HNMS K XIV: HrMs K XIV (Lt. J.H. Geijs, RNN) departed Colombo for Bombay. She was escorted by the Dutch minelayer / sloop HrMs Willem van der Zaan (Lt.Cdr. G.P. Küller, RNN).

Royal Dutch Navy Submarine HNMS O 9: HrMs O 9 (Lt. J.F. Drijfhout Van Hooff, RNN) shifted from Ardrossan to Rothesay.

Royal Navy Submarine HMS Otway: HMS Otway (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Breda (Capt.(Retd.) A. E. Johnston, RN).

Royal Navy Submarine HMS Otus: HMS Otus (Lt. R.M. Favell, RN) conducted exercises off Alexandria.

Royal Navy Submarine HMS Seawolf: HMS Seawolf (Lt. R.P. Raikes, RN) ended her 26th war patrol at Lerwick. She departed for Holy Loch later the same day escorted by HMS White Bear (Cdr. (retired) C.C. Flemming, RN).

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

Royal Navy Submarine HMS Taku: HMS Taku (Lt.Cdr. J.G. Hopkins, RN) departed from Gibraltar for passage to Alexandria.

Royal Navy Submarine HMS Thrasher: HMS Thrasher (Lt. H.S. Mackenzie, RN) ended her 9th war patrol at Alexandria

Royal Navy Submarine HMS Turbulent: HMS Turbulent (Cdr. J.W. Linton, DSC, RN) ended her 4th war patrol at Alexandria.

Royal Navy Submarine HMS Urge: HMS Urge (Lt.Cdr. E.P. Tomkinson, DSO and Bar, RN) ended her 20th war patrol (18th in the Mediterranean) at Malta.

Royal Navy Submarine HMS Unruffled: HMS P 46 (Lt. J.S. Stevens, DSC, RN) conducted exercises in the Clyde area.

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

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. M.E. Faber, RN) participated in A/S exercises off Campbeltown.

Royal Navy Submarine HMS H 43: HMS H 43 (Lt. F.D.G. Challis, DSC, RN) conducted A/S exercises off Lough Foyle with HMS Hartland (Lt.Cdr. G.P. Billot, RNR), HMS Dianthus (Lt.Cdr.(Retd.) C.E. Bridgman, RNR), HMS Winchelsea (Lt.Cdr. G.W. Gregorie, RNR), HMCS Assiniboine (A/Lt.Cdr. J.H. Stubbs, RCN) and HMS Aberdeen (Lt.Cdr. S.G. Rivers-Smith, RN).

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. R.P. Webb, RN) participated in A/S exercises off Tobermory.

US Navy Submarine USS S-47: USS S-47 (Lt. J.W. Davis) departed from Brisbane for her 1st war patrol. She was ordered to patrol in the New Britain-New Ireland area.

US Navy Submarine USS R-2: USS R-2 (Lt. D.T. Hammond, USN) conducted exercises off Key West.

US Navy Submarine USS R-10: USS R-10 (Lt. B.E. Lewellen, USN) conducted exercises off Key West.

US Navy Submarine USS R-11: USS R-11 (Lt.Cdr. E.C. Folger, Jr., USN) conducted exercises off Key West.

US Navy Submarine USS R-13: USS R-13 (Lt. A.R. Gallaher, USN) conducted exercises off Key West.

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

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

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) conducted exercises in the Clyde area.

1943

Royal Dutch Navy Submarine HNMS O 21: HrMs O 21. (Lt.Cdr. J.F. van Dulm) torpedoed and sank the Japanese army cargo ship Yamazato Maru (6925 GRT, built 1937) in the Malacca Strait in position 03°26'N, 99°48'E. Yamazato Maru was escorted by the Japanese minelayer Hatsutaka (offsite link). A few hours later an attack on another Japanese ship in position 03°23'N, 100°07'E failed to produce any hits. (All times are zone -6.5) 0045 hours - In position 03°07'N, 100°40'E sighted the silhouette of a ship bearing 182°. 0047 hours - Dived. HE was picked up. 0135 hours - HE was still being picked up but became weaker. 0151 hours - Surfaced and sighted a ship bearing 251°, distance 7 nautical miles. 0350 hours - Sighted an escort vessel ahead of the main target. 0500 hours - Dived at dawn. 0511 hours - The target was seen to be a large camouflaged merchant ship of about 7000 tons. The escort was thought to be a Chidori-class torpedo boat. Started attack. 0540 hours - In position 03°26'N, 99°48'E fired four torpedoes from 2000 yards resulting in two hits. One just in front of the bridge and one in hold number 5. The ship broke in two with the front part capsizing and sinking slowly. The aft part burst into flames and sank quickly. 0601 hours - The torpedo boat dropped a pattern of four depth charges but these were not close. O 21 retired to the East-North-East. 0830 hours - The torpedo boat was now lost out of sight. ----------------------------------------- 1110 hours - In position 03°28'N, 100°03'E sighted a ship bearing 090°. Started attack with the deck torpedo tubes but one of the doors could not be opened properly so abandoned this plan and went for an attack with the stern torpedo tubes. 1149 hours - In position 03°23'N, 100°07'E fired two stern torpedoes at the target that was thought to be of about 2000 tons. Range 700 yards. The torpedoes missed. It appeared the target saw the tracks and avoided. She altered course and made for the submarine. 1152 hours - The ship dropped three depth charges about 300 yards away. O 21 took avoiding action. 1202 hours - Two more depth charges were dropped about 1000 yards away. O 21 cleared the area to the North. 1246 hours - Two more depth charges were dropped 1800 yards away. 1300 hours - Saw an aircraft circling the area. Went to 75 feet and came to periscope depth every 20 minutes. 1315 hours - Saw a torpedo boat, Chidori-type and most likely the same one as this morning joining the hunt. 1500 hours - Nothing in sight now.

Royal Dutch Navy Submarine HNMS O 14: HrMs O 14 (Lt.Cdr. H.A.W. Goossens, RNN) departed Scapa Flow for Lerwick where she arrived later the same day. She was escorted by the British M/S trawler HMS Hamlet (T/Lt. H.H. Bolton, RNVR).

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 Shemara (Cdr.(Retd.) H. Buckle, RN) and HMS Bedlington (Skr. J.H.D. Dansie, RNR).

Royal Dutch Navy Submarine HNMS O 10: HrMs O 10 (Lt.Cdr. Baron D.T. Mackay, RNN) participated in A/S exercises with ML's off Ardishaig. Upon completion of these exercises she returned to Rothesay.

US Navy Submarine USS Pompon: USS Pompon (Lt.Cdr. E.C. Hawk, USN) arrived at Coco Solo, Panama Canal Zone from New Orleans, Louisiana and commenced a training period.

US Navy Submarine USS Pompon: USS Pompon (Lt.Cdr. E.C. Hawk, USN) arrived at Coco Solo, Panama Canal Zone to begin a training period.

Royal Navy Submarine HMS Oberon: HMS Oberon (Lt.Cdr. J.W. McCoy, DSC, RN) conducted gunnery exercises in the Clyde area with a target towed by HMS Z 5 (T/A/Lt.Cdr. S.T. Wenlock, RNR).

Royal Navy Submarine HMS Severn: HMS Severn (Lt.Cdr. A.N.G. Campbell, RN) arrived at Holy Loch.

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 Shikari (Lt.Cdr. D.A. Rayner, DSC, VRD, RNVR) served as the target.

Royal Navy Submarine HMS Saracen: HMS Saracen (Lt. M.G.R. Lumby, DSO, DSC, RN) torpedoed and sank the Italian merchant Tagliamento (5448 GRT, built 1922) about 35 nautical miles south (bearing 197) of Pianosa, Italy in position 42°03'N, 09°48'E. (All times are zone -1) 0005 hours - In position 42°10'N, 09°51'E sighted two 6000 tons merchant ships escorted by a Crotone-class minelayer. Enemy course was 180°, speed 7 knots. Range was only 2000 yards owning to a rainsquall. When about to fire the escort turned towards so dived. Evidently Saracen was not sighted as he just started a circular tour of his convoy. 0020 hours - Surfaced and gave chase. 0102 hours - In position 42°03'N, 09°48'E fired three torpedoes at the second merchant ship from 2000 yards. Two of the torpedoes were seen to run under the first one missed ahead. 0106 hours - Fired another three torpedoes from 1200 yards. Again the first one missed ahead but the second one hit just abaft the funnel. A tremendous explosion followed. A sheet of orange flame went up hundreds of feet into the air and burning debris hurtled in all directions. As Saracen was diving the bridge of the merchant vessel sailed overhead. Saracen was Lucky to escape undamaged from the falling debris. The escort meanwhile dropped six depth charges but these were way off. [The convoy attacked was made up of the above mentioned Tagliamento (with a cargo of ammunition) as well as the Italian merchant Ercole (4982 GRT, built 1904) and the German merchant Ringulv (Former French Ste Marguerite, former Norwegian Ringulv, 5155 GRT, built 1902). Escort was provided by auxiliary Cattaro .They were on passage from Leghorn to La Maddalena. There were no suvivors.]

Royal Navy Submarine HMS Sceptre: HMS Sceptre (Lt. I.S. McIntosh, MBE, DSC, RN) conducted exercises in the Clyde area.

Royal Navy Submarine HMS Surf: HMS Surf (Lt. D. Lambert, DSC, RN) participated in A/S exercises at Scapa Flow.

Royal Navy Submarine HMS Syrtis: Syrtis (Lt. M.H. Jupp, DSC, RN) arrived at Holy Loch to begin a period of trials and training off the Scottish west coast.

Royal Navy Submarine HMS Taku: During 22 April and 23 April 1943, HMS Taku (Lt. A.J.W. Pitt, RN), conducted exercises off Plymouth. These included night exercises.

Royal Navy Submarine HMS Trusty: HMS Trusty (Lt.Cdr. E.F Balston, DSO, RN) arrived at Durban.

Royal Navy Submarine HMS Unbroken: HMS Unbroken (Lt. B.J.B. Andrew, DSC, RN) attacked the Italian auxiliary minesweeper No. 17/Milano (379 GRT) off Cape San Vito, Sicily, Italy in position 38°11'N, 12°45'E. The torpedo missed but, while avoiding it, the minesweeper ran aground accidentally. (All times are zone -1) 1411 hours - Set course to close a large schooner seen during the morning. 1600 hours - In position 38°10'N, 12°46'E fired one torpedo from 900 yards. The torpedo hit and the target disintegrated. Unbroken then retired to the north.

Royal Navy Submarine HMS United: At 0815 hours in position 38°00’N, 16°13’E, HMS United (Lt. J.C.Y. Roxburgh, DSC, RN) sighted what was at first believed to be a convoy but was then seen to be two Climene class and one Generale class torpedo boats moving slowly to the northeast. The submarine believed they were carrying an A/S sweep and desisted from attack. These were the torpedo boats Tifone and Giuseppe Dezza escorting the damaged torpedo boat Aretusa being towed by the tug Tifeo from Messina to Taranto.

Royal Navy Submarine HMS Unsparing: HMS Unsparing (Lt. A.D. Piper, DSC and 2 bars, RNR) shifted from Holy Loch to Campbeltown. En-route gunnery exercises were carried out.

Royal Navy Submarine HMS Upstart: HMS Upstart (Lt. P.C. Chapman, DSC and Bar, RN) conducted noise trials in Loch Goil.

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. J.A. Spender, RN) conducted A/S exercises off Lough Foyle with ships of Escort Group B 7, HMS Starling (Capt. F.W. Walker, DSO and Bar, RN), HMS Bideford (Lt.Cdr. W.F. Hollins, RN) and HMS Winchelsea (Lt.Cdr. G.W. Gregorie, RD, RNR) and another vessel [unable to read the name of this vessel in the log of HMS H 33].

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. J.P. Angell, RN) conducted A/S exercises off Campbeltown with HMS Tuscarora (Cdr.(Retd.) K.W. Stewart, RN) and HMS Bretwalda (Skr.Lt. J.R. Coultas, RD, RNR).

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

Royal Navy Corvette HMS Asphodel: HMS Asphodel (Lt.Cdr. H.P. Carse, DSC, RNVR) picks up 54 survivors from the British merchant Amerika that was torpedoed and sunk by German U-boat U-306 in the north Atlantic, south of Cape Farewell in position 57°30'N, 42°50'W.

US Navy Submarine USS R-1: USS R-1 (Lt.Cdr. W.R. Laughon, USN) conducted exercises off Bermuda.

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

US Navy Submarine USS R-4: USS R-4 (Lt.Cdr. P.W. Garnett, USN) conducted exercises off Key West.

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

US Navy Submarine USS R-12: USS R-12 (Lt.Cdr. E.E. Shelby, USN) participated in A/S exercises in Long Island sound together with USS Ordronaux (Lt.Cdr. R. Brodie, Jr., USN).

US Navy Submarine USS R-20: USS R-20 (Lt. E.T. Shepard, USN) conducted exercises off Key West.

Soviet Navy Submarine USSR L-22: L-22 lays a minefield in Lopphavet.

Soviet Navy Submarine USSR K-21: The German merchant Duna (1926 GRT) is mined and sunk in the Lyngenfjord. The mine was laid by K-21 on 18 February 1943.

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 L 27: HMS L 27 (Lt.Cdr. W.N. Eade, RNR) 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) departed Simonstown for Boma. She was escorted by the Free French corvette FFS Commandant d'Estienne d'Orves. In the afternoon two ratings were washed overboard of which only was recovered. The other was was reported missing after a search of over an hour. For the daily position of the (aborted) passage to Boma and the return from Walvis Bay to Simonstown see the map below.

1944

Royal Canadian Navy Frigate HMCS Swansea: German U-boat U-311 sunk in the North Atlantic south west of Iceland in position 52°09'N, 19°07'W, by depth charges from the Canadian frigates HMCS Matane (Lt.Cdr. A.F.C. Layard, DSO, RN) and HMCS Swansea (A/Cdr. C.A. King, DSO, DSC, RCNR).

Royal Canadian Navy Frigate HMCS Swansea: The fact that U-311 was destroyed by the depth charge attacks of Matane and/or Swansea, was unknown until years after WWII, when German and British intelligence attributed the kill to these two ships, as opposed to attack by aircraft, the latter having been thought to be the case prior to the post-war analyses.

Royal Dutch Navy Submarine HNMS K XV: HrMs K XV (Lt.Cdr. Baron C.W.T. van Boetzelaer, RNN) succesfully picked up the reconnaissance party.

Royal Dutch Navy Submarine HNMS O 19: HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Holy Loch for passage to Dundee. She made the passage together with HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) and HMS Strongbow (Lt. J.A.R. Troup, DSC, RN). Sibyl was also to proceed to Dundee and Strongbow was to proceed to Lerwick to begin her 1st war patrol from there. They were escorted by HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR).

Royal Dutch Navy Submarine HNMS O 9: HrMs O 9 (Lt. R.W. van Lynden, RNN) participated in A/S exercises off Lough Foyle together with HMS Hesperus (Cdr. G.V. Legassick, RD, RNR), HMS Gardiner (Lt. W.G.H. Bolton, DSC, RNR) and aircraft.

US Navy Submarine USS Stingray: USS Stingray (Lt.Cdr. S.C. Loomis, Jr) ended her 10th war patrol at Pearl Harbor.

US Navy Submarine USS Haddo: USS Haddo (Lt.Cdr. C.W. Nimitz, Jr.) ended her 5th war patrol at Fremantle.

US Navy Submarine USS Scamp: USS Scamp (Lt.Cdr. J.C. Hollingsworth) arrived at Milne Bay. She is now sent to Pearl Harbor for permanent repairs and a major overhaul.

US Navy Submarine USS Aspro: USS Aspro (Cdr. W.A. Stevenson, USN) departed from Pearl Harbor for her 3rd war patrol. She was ordered to patrol off the Palau's. She was escorted out by USS PC-1077. For the daily and attack positions of USS Aspro during this patrol see the map below. As no deck log is available (for the moment) positions were taken from the patrol report. Unfortunately the patrol report does not give daily noon positions.

US Navy Submarine USS Guavina: USS Guavina (Lt.Cdr. C. Tiedeman) sank a Japanese trawler with gunfire off the Bonin Islands in position 27°37'N, 141°46'E.

Royal Navy Submarine HMS Oberon: HMS Oberon (Lt. M.L.C. Crawford, DSC, RN) conducted independent exercises in the Clyde area.

Royal Navy Submarine HMS Clyde: HMS Clyde (Lt.Cdr. R.S. Brookes, DSO, DSC, RN) is ordered to patrol in position 40°30'N, 12°50'W. The passage to Gibraltar now became HMS Clyde's 27th war patrol. For the daily positions of HMS Clyde during this patrol see the map below.

Royal Navy Submarine HMS Sealion: HMS Sealion (Lt. P.E. Newstead, DSC, RN) conducted A/S exercises off Campbeltown with HMS Bedlington (Skr. A.W. Peak, RNR) and HMS Boarhound (A/Ch.Skr. A. Keable, RNR).

Royal Navy Submarine HMS Sunfish: HMS Sunfish (Lt. H.J. Bartlett, DSC, RN) participated in A/S exercises at Scapa Flow.

Royal Navy Submarine HMS Sibyl: HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) departed Holy Loch for passage to Dundee. She made the passage together with HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) and HMS Strongbow (Lt. J.A.R. Troup, DSC, RN). O 19 was also to proceed to Dundee and Strongbow was to proceed to Lerwick to begin her 1st war patrol from there. They were escorted by HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR).

Royal Navy Submarine HMS Sirdar: HMS Sirdar (Lt. J.A. Spender, RN) departed Port Said for Aden. She transited the Suez Canal this day.

Royal Navy Submarine HMS Strongbow: HMS Strongbow (Lt. J.A.R. Troup, DSC, RN) departed the Clyde for Lerwick. She made (part of) the passage together with HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) and HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN). They were escorted by HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR).

Royal Navy Submarine HMS Shalimar: Shalimar (Lt. W.G. Meeke, DSC, MBE, RN) conducted speed trials on the Arran measured mile following which she was commissioned at Holy Loch.

Royal Navy Submarine HMS Truant: HMS Truant (Lt. E.C. Croswell, DSC, RN) conducted exercises off Larne.

Royal Navy Submarine HMS Taurus: HMS Taurus (Lt.Cdr. M.R.G. Wingfield, DSO, DSC and Bar, RN) sank the Japanese salvage vessel Hokuan Maru I-Go (558 GRT, built 1929) and a tug with gunfire off the West coast of Siam in position 07°15'N, 99°18'E. (All times are zone -6.5) 0705 hours - Masts were seen close inshore and finally a small coaster towing a small tug were seen about 5 nautical miles to the North-East. 0715 hours - Surfaced in position 07°15'N, 99°18'E and gave chase. 0740 hours - Opened fire with the 4" gun from 4000 yards. The third round was a hit and the coaster was soon on fire. A torpedo was fired from 1000 yards to finish her off but it missed just ahead. A second torpedo was now fired but this one ran under. 0755 hours - After further shelling the target sank. A few more rounds were used to sink the tugs.

Royal Navy Submarine HMS Thorough: HMS Thorough (Lt.Cdr. J.G. Hopkins, RN) conducted attack exercises in the Clyde area during which HMS Vindex (Capt. H.T.T. Bayliss, RN) served as target. These included night exercises.

Royal Navy Submarine HMS Trenchant: HMS Trenchant (Lt.Cdr. A.R. Hezlet, DSC, RN) conducted special torpedo trials off Arrochar.

Royal Navy Submarine HMS United: HMS United (Lt. N.R. Wood, RN) conducted A/S exercises off Tobermory together with HMS Highlander (Cdr. D.A. Rayner, DSC, RNVR), La Surprise, HMS Loch Fada (Lt.Cdr. B.A. Rogers, RD, RNR) and HMS Jed (Lt.Cdr. R.S. Miller, DSC, RNR).

Royal Navy Submarine HMS Unrivalled: HMS Unrivalled (Lt. D.S. Brown, RNVR) proceeded from South Shields to Blyth. En-route full power trials were carried out.

Royal Navy Submarine HMS Unsparing: HMS Unsparing (Lt. A.D. Piper, DSC and 2 bars, RNR) ended her 10th war patrol (9th in the Mediterranean) at Malta.

Royal Navy Submarine HMS Varangian: HMS Varangian (Lt. S.J. Fovargue, RN) departed Fishguard for Rothesay.

Royal Navy Submarine HMS Unswerving: HMS Unswerving (T/Lt. M.D. Tattersall, RNVR) departed Malta for her 4th war patrol (2nd in the Mediterranean). She was ordered to patrol in the western Aegean. For the daily and attack positions of HMS Unswerving see the map below.

Royal Navy Submarine HMS Upstart: HMS Upstart (Lt. P.C. Chapman, DSC and Bar, RN) arrived at La Maddalena.

Royal Norwegian Navy Submarine HNoMS Ula: HNoMS Ula (Lt. S. Valvatne) torpedoed and sank the German merchant Bahia (4117 GRT, built 1927) off Lista, Norway in position 58°07'N, 06°27'E. Bahia was in convoy together with the German Merchants Ingrid Traber (1883 GRT, built 1927), Claus Rickmers (5165 GRT, built 1924), Walter L.M. Russ (1538 GRT, built 1927), tanker Amrum (1005 GRT, built 1938), and hospital ship Posen (1104 GRT, built 1925). They were escorted by the German minesweepers M 416, M 427, M 437, M 446, M 489, M 496. Bahia was carrying 7500 tons of coal, fifty-one survivors were picked up, sixteen were missing. (All times are zone -2) 0247 hours - Sighted a vessel towards Lister in the flashes from the light. This vessel was on a northerly course. 0248 hours - Turned towards. More vessels were now sighted. ASDIC reported A/S transmissions coming from the same direction. 0255 hours - Sighted an M-class minesweeper. Range was only 200 yards. Ordered hard starboard. The range to the nearest ship in the convoy was about 1000 yards. 0256 hours - Sighted another escort vessel. Lt. Valvatne was now forced to fire on the closest merchant vessel so fired four torpedoes from 800 yards. One torpedo hit was obtained. Ula meanwhile dived to 60 feet. 0312 hours - Heard breaking up noises. 0336 hours - HE had now faded out so surfaced.

Royal Navy Submarine HMS Vampire: HMS Vampire (Lt. C.W. Taylor, RNR) arrived at Malta.

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

Royal Navy Submarine HMS Voracious: Having completed her torpedo discharge trials, HMS Voracious (Lt. F.D.G. Challis, DSC, RN), shifted from Arrochar to Holy Loch.

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. R.L. Jay, RN) conducted A/S exercises off Campbeltown with HMS L' Atlantique (Skr. H. Crighton, RNR) and HMS Bretwalda (Skr. J.B. Henderson, RNR).

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. P.N. Joyce, RN) participated in A/S exercises off Campbeltown.

US Navy Submarine USS R-4: USS R-4 (Lt.Cdr. W.L. Fey, Jr., USN) conducted exercises off Key West.

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-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 M-62: M-62 fires two torpedoes against the Romanian merchant Arendal (5695 GRT) in position 43°52'N, 31°11'E. Both torpedoes missed their target.

Soviet Navy Submarine USSR M-111: M-111 fires two torpedoes against the Romanian merchant Ardeal (5695 GRT) south-east of Constanta, Romania in position 43°45'N, 29°45'E. Both torpedoes missed their target.

US Navy Submarine USS Piranha: USS Piranha conducted exercises off Key West.

1945

US Navy Destroyer Escort USS Carter: German U-boat U-518 was sunk in the North Atlantic north-west of the Azores, in position 43°26'N, 38°23'W, by depth charges from the US destroyer escorts USS Carter and USS Neil A. Scott.

US Navy Destroyer USS Haynsworth: USS Haynsworth (Cdr. R. Brodie, Jr.) departed from Eniwetok bound for Pearl Harbor.

US Navy Destroyer USS Laffey (ii): USS Laffey (Cdr. F.J. Beston) departed from Okinawa for Saipan.

US Navy Destroyer USS Stormes: USS Stormes departed from the Bremerton Navy Yard bound for Pearl Harbor.

Royal Dutch Navy Submarine HNMS O 19: HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) attacked the Japanese heavy cruiser Ashigara with a spread of four torpedoes about 30 nautical miles north of Batavia, Java, Netherlands East Indies in position 05°29'S, 107°00'E. Unfortunately, all torpedoes missed their target yet again although it was thought at the time that one hit had been obtained. Ashigara was still escorted by the Japanese destroyer Kamikaze. All times are zone -9) 1358 hours - In position 05°29'S, 107°00'E sighted a Nachi-class heavy cruiser escorted by one destroyer bearing 343°, enemy course 173°, range 5.5 nautical miles. 1413 hours - Fired four torpedoes from 6000 yards. 1417 hours - Heard one timed torpedo hit but it was not observed. 1419 hours - One depth charge was dropped, not close. 1420 hours - O 19 bottomed at 48 meters (26 fathoms). 1421 - 1428 hours - Four depth charges were dropped, all fairly distant. No serious hunt developed. 1535 hours - Got off the bottom.

US Navy Submarine USS Cero: USS Cero (Lt.Cdr. R. Berthrong) sank the Japanese guard boat Aji Maru (107 GRT) west of Tori Jima in position 31°38'N, 139°00'E, and damaged guard boat Takamiya Maru No.9 in position 30°04'N, 136°43'E.

US Navy Submarine USS Croaker: USS Croaker (Lt.Cdr. W.B. Thomas) ended her 4th war patrol at Subic Bay, Philippines.

US Navy Submarine USS Flounder: USS Flounder (Cdr. J.E. Stevens) ended her 6th war patrol at Saipan. She was now ordered to the Mare Island Navy Yard for a major overhaul.

US Navy Submarine USS Lapon: With her overhaul completed USS Lapon (Lt.Cdr. D.G. Bear) arrived at Pearl Harbor.

US Navy Submarine USS Bumper: USS Bumper (Cdr. J.W. Williams, Jr., USN) departed from Pearl Harbor for her 1st war patrol. She was ordered to patrol in the South China Sea. She was escorted out by USS PC-780. For daily positions of USS Bumper during this patrol see the map below.

US Navy Submarine USS Capitaine: USS Capitaine (Lt.Cdr. E.S. Friedrick, USN) conducted exercises off Pearl Harbour together with USS Pruitt (Lt. D.B. Harby, USNR), USS PGM-21 (Lt. L. Gardiner, USNR), USS Muskalunge (Lt.Cdr. L.A. Lajaunie, Jr., USN) and USS Segundo (Cdr. James D. Fulp, Jr., USN).

US Navy Submarine USS Carbonero: USS Carbonero (Cdr. C.L. Murphy, USN) conducted exercises in Panama Bay together with USS MacLeish (Lt. D.S. Cramer, USNR).

US Navy Submarine USS Hardhead: USS Hardhead (Cdr. F.A. Greenup) sank two small Japanese vessels with gunfire in the gulf of Siam in position 10°25'N, 99°24'E.

US Navy Submarine USS Lamprey: USS Lamprey (Cdr. W.T. Nelson) ended her 1st war patrol at Fremantle, Australia.

US Navy Submarine USS Bang: At 0737 hours (zone -9), USS Bang (Lt.Cdr. O.W. Bagby, Jr., USN), picked up Ensign Donald E. corzine from USS Chenango, Hellcat pilot. He had been in the water for 14 hours.

Royal Navy Submarine HMS Turpin: HMS Turpin (A/Lt.Cdr. J.S. Stevens, DSO and Bar, DSC, RN) arrived at the Devonport Dockyard.

Royal Navy Submarine HMS Sceptre: HMS Sceptre (Lt. R.F. Park, RN) participated in A/S exercises off Loch Alsh.

Royal Navy Submarine HMS Seraph: HMS Seraph (Lt. T. Russell-Walling, RN) conducted A/S exercises off Loch Alsh with the 21st Escort Group.

Royal Navy Submarine HMS Scotsman: HMS Scotsman (Lt. A.H.B. Anderson, DSC, RNR) conducted attack exercises in the Clyde area during which HMS Shikari (Lt. E.A. Tyrer DSC, RN) served as the target.

Royal Navy Submarine HMS Sturdy (ii): HMS Sturdy (T/Lt. F.A. Wicker, RNVR) arrived at Exmouth Gulf.

Royal Navy Submarine HMS Scorcher: HMS Scorcher (Lt. K.S. Renshaw, DSC, RNR) departed Scapa Flow for Holy Loch. She made the passage together with HMS Tapir (Lt. J.C.Y. Roxbourgh, DSO, DSC, RN), HMS Totem (A/Lt.Cdr. M.B. St. John, RN). They were escorted by HMS Hastings (A/Cdr. E.A. Stocker, DSC, RN).

Royal Navy Submarine HMS Thrasher: HMS Thrasher (Lt.Cdr. M.F.R. Ainslie, DSO, DSC, RN) ended her 19th war patrol (3rd in the Far East) at Trincomalee.

Royal Navy Submarine HMS Trusty: HMS Trusty (Lt. W. St.G. Anderson, DSC, RNR) served as target at/off Scapa Flow during radar exercises for HMS Amphion (Cdr. R.H. Dewhurst, DSO and 2 Bars, RN).

Royal Navy Submarine HMS Tiptoe: HMS Tiptoe (Lt.Cdr. P.R.H. Harrison, DSO, DSC and Bar, RN) is put back in the water.

Royal Navy Submarine HMS Totem: HMS Totem (Lt.Cdr. M.B. St. John, DSC, RN) departed from Lerwick for Holy Loch.

Royal Navy Submarine HMS Tapir: HMS Tapir (Lt. J.C.Y. Roxbourgh, DSO, DSC, RN) departed from Lerwick for Holy Loch. She made the passage together with HMS Totem (A/Lt.Cdr. M.B. St. John, RN). They were escorted by HMS Hastings (A/Cdr. E.A. Stocker, DSC, RN). Off Scapa Flow they were joined by HMS Scorcher (Lt. K.S. Renshaw, DSC, RNR).

Royal Navy Submarine HMS Umbra: HMS Umbra (T/Lt. H.C. Parker, DSC, RNVR) conducted exercises off Portsmouth.

Royal Navy Submarine HMS Unruffled: HMS Unruffled (T/Lt. A.H. MacCoy, DSC, SANF(V)) conducted A/S exercises off Bermuda together with HMCS Lachine (T/Lt. F.M. Travers, RCNVR).

Royal Navy Submarine HMS Unruly: HMS Unruly (T/Lt. D.J. Palmer, RNVR) conducted A/S exercises off Campbeltown with HMS St. Modwen (T/A/Lt.Cdr. F.J.G. Rice, RNR) and HMS Shemara (Cdr.(Retd.) H. Buckle, RN).

Royal Navy Submarine HMS Ultor: HMS Ultor (Lt. J.P. Harvey, RN) participated in A/S exercises off Tobermory.

Royal Navy Submarine HMS Unsparing: HMS Unsparing (Lt. J.M.C. Fenton, DSC, RN) shifted from Rothesay to Campbeltown.

Royal Navy Submarine HMS Vagabond: HMS Vagabond (Lt. I.M. Stoop, DSC, RN) conducted special torpedo trials off Arrochar.

Royal Navy Submarine HMS Vampire: HMS Vampire (Lt. C.W. Taylor, RNR) conducted A/S exercises off Gibraltar with HMS Eggesford (Lt. G.H. Evans, RN) and another vessel [unable to read the name in the logbook of HMS Vampire].

Royal Navy Submarine HMS Vigorous: HMS Vigorous (Lt. N.R. Wood, RN) returned to Trincomalee on completion of last night's exercises.

Royal Navy Submarine HMS Virtue: HMS Virtue (Lt. R.D. Cairns, DSC, RN), HMS Voracious (Lt. F.D.G. Challis, DSC, RN) and HMS Vox (Lt. J.M. Michell, RN) all conducted attack exercises off Sydney during which HMS Newcastle (Cdr. S.H. Pinchin, DSC, RN) served as the target.

Royal Navy Submarine HMS Virulent: HMS Virulent (Lt. F.E. Ashmead-Bartlett, RN) participated in A/S exercises off Campbeltown.

Royal Navy Submarine HMS Vivid: HMS Vivid (Lt. R.M. Seaburne-May, DSC, RN) arrived at Colombo.

Royal Navy Submarine HMS Volatile: HMS Volatile (Lt. F.R. Lawrence, RN) shifted from Oban to Tobermory. She was escorted HMS Clorinde (T/Lt. C.E.C. Martin, DSC, RNVR).

US Navy Submarine USS R-1: USS R-1 (Lt. W.A. Schoenfeld, USN) conducted A/S exercises off Casco Bay, Maine together with USS Uniontown (Lt. R.K. Safford, USCGR) and USS Muskegon (Lt.Cdr. J.L. Home, USCGR).

US Navy Submarine USS R-18: USS R-18 arrived at Key West, Florida.

Soviet Navy Submarine USSR ShCh-310: At 0036 hours ShCh-310 fires 2 torpedoes against ' what is identified as ' a merchant of unknown tonnage south-west of Libau in position 56°24'N 20°22'E. Both torpedoes missed their target.

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