Allied Warships

Events on this day

18 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 (29)

1924: French Navy Submarine Danaé - French Navy Submarine Eurydice

1935: Royal Navy Minesweeper Salamander (J 86)

1938: US Navy Oiler Cimarron (AO 22) - US Navy Submarine Seadragon (194)

1941: Royal Australian Navy Minesweeper Colac (J 242)

1942: Brazilian Navy Submarine chaser Jaguaribe (CS 56) - Royal Navy Landing Craft Tank LCT 330 (LCT 330) - US Navy Patrol craft PC-596 (PC-596) - US Navy Motor torpedo boat PT 77 - US Navy Submarine chaser SC-701 (SC-701) - US Navy Submarine chaser SC-713 (SC-713) - US Navy Submarine chaser SC-737 (SC-737) - US Navy Submarine chaser SC-767 (SC-767) - US Navy Submarine chaser SC-982 (SC-982) - US Navy Submarine chaser SC-986 (SC-986) - US Navy Minesweeper YMS-11 (YMS-11)

1944: US Navy Landing Craft Infantry LCI(L)-1001 (LCI(L)-1001) - US Navy Landing Craft Infantry LCI(L)-1028 (LCI(L)-1028) - US Navy Landing Craft Infantry LCI(L)-1063 (LCI(L)-1063) - US Navy Landing Craft Infantry LCI(L)-614 (LCI(L)-614) - US Navy Landing Craft Infantry LCI(L)-680 (LCI(L)-680) - US Navy Medium landing ship LSM 260 (LSM 260) - US Navy Tank landing ship LST 1000 (LST 1000) - US Navy Tank landing ship LST 1001 (LST 1001) - US Navy Tank landing ship LST 1022 (LST 1022) - US Navy Destroyer Soley (DD 707)

1945: US Navy Motor torpedo boat PT 706 - US Navy Motor torpedo boat PT 707

Launched (59)

1916: Royal Navy MS Trawler Sarpedon (4.05)

1927: United States Coast Guard Patrol vessel Reliance (WPC 150) - United States Coast Guard Patrol vessel Rush (WPC 151) - United States Coast Guard Patrol vessel Tiger (WPC 152) - United States Coast Guard Patrol vessel Travis (WPC 153)

1931: Royal Dutch Navy Submarine O 13 (N 13)

1935: French Navy Torpedo boat L'Iphigénie - Royal Navy ASW Trawler Lord Stanhope (FY 163)

1936: US Navy Destroyer Dunlap (DD 384) - US Navy Destroyer Selfridge (DD 357)

1939: Royal Navy Sloop Flamingo (L 18 / U 18) - Royal Navy Patrol vessel Shearwater (L 39 / K 39)

1940: Royal Navy Motor Torpedo Boat MTB 273 (MTB 273) - US Navy Motor torpedo boat PT 3

1941: US Navy Motor torpedo boat PT 22

1942: Royal Navy Boom defence vessel Barflake (Z 184) - Italian Navy Torpedo boat Fortunale - US Navy Submarine Blackfish (221) - US Navy Minesweeper Conflict (AM 85) - US Navy Submarine chaser SC-520 (SC-520) - US Navy Submarine chaser SC-630 (SC-630) - US Navy Submarine chaser SC-648 (SC-648) - US Navy Submarine chaser SC-649 (SC-649) - US Navy Submarine chaser SC-652 (SC-652) - US Navy Submarine chaser SC-653 (SC-653) - US Navy Destroyer Shubrick (ii) (DD 639) - US Navy Minesweeper Speed (AM 116) - US Navy Oiler Tappahannock (AO 43) - US Navy Minesweeper YMS-108 (YMS-108)

1943: US Navy Destroyer Clarence K. Bronson (DD 668) - US Navy Submarine Dragonet (293) - US Navy Submarine Escolar (294) - US Navy Tank landing ship LST 175 (LST 175) - US Navy Destroyer Escort Osterhaus (DE 164) - US Navy Destroyer Escort Parks (DE 165) - US Navy Seaplane tender Timbalier (AVP 54)

1944: Royal Navy Landing Craft Tank LCT 1090 (LCT 1090) - Royal Navy Landing Craft Tank LCT 477 (LCT 477) - Royal Navy Submarine Thor (P 349) - Royal Navy Submarine Tiara (P 351) - US Navy Destroyer Escort Damon M. Cummings (DE 643) - US Navy Landing Craft Infantry LCI(L)-596 (LCI(L)-596) - US Navy Landing Craft Infantry LCI(L)-677 (LCI(L)-677) - US Navy Landing Craft Infantry LCI(L)-982 (LCI(L)-982) - US Navy Landing Craft Infantry LCI(L)-983 (LCI(L)-983) - US Navy Landing Craft Infantry LCI(L)-984 (LCI(L)-984) - US Navy Landing craft tank LCT 1048 (LCT 1048) - US Navy Landing craft tank LCT 1073 (LCT 1073) - US Navy Landing craft tank LCT 1074 (LCT 1074) - US Navy Landing craft tank LCT 689 (LCT 689) - US Navy Landing craft tank LCT 791 (LCT 791) - US Navy Medium landing ship LSM 136 (LSM 136) - US Navy Medium landing ship LSM 137 (LSM 137) - US Navy Tank landing ship LST 559 (LST 559) - US Navy Tank landing ship LST 665 (LST 665) - US Navy Tank landing ship LST 914 (LST 914)

1945: US Navy Tank landing ship LST 1077 (LST 1077) - US Navy Tank landing ship LST 1141 (LST 1141) - US Navy Motor torpedo boat PT 595

Commissioned (32)

1916: Royal Navy Battleship Royal Sovereign (05) - Royal Navy Mooring vessel Steady

1918: Royal Navy Destroyer Westminster (L 40)

1919: US Navy Destroyer Crane (DD 109)

1921: US Navy Destroyer Lawrence (DD 250)

1922: US Navy Submarine S-33 (138)

1934: Royal Navy Minesweeper Halcyon (J 42) - Soviet Navy Submarine ShCh-109

1939: Italian Navy Submarine Brin

1942: Royal Canadian Navy Motor Launch ML 062 (ML 062) - Royal Canadian Navy Motor Launch ML 063 (ML 063) - Royal Navy Motor Launch ML 355 (ML 355) - US Navy Patrol craft PC-570 (PC-570) - US Navy Minesweeper YMS-20 (YMS-20) - US Navy Minesweeper YMS-21 (YMS-21)

1944: Royal Canadian Navy Motor Torpedo Boat MTB 467 (MTB 467) - Royal Canadian Navy Frigate Orkney (K 448) - Royal Navy Landing Craft Tank LCT 7064 (LCT 7064) - Royal Navy Motor Launch ML 591 (ML 591) - Royal Dutch Navy Motor Gun Boat MTB 432 (MTB 432) - US Navy Submarine Hardhead (365) - US Navy Landing Craft Infantry LCI(L)-1018 (LCI(L)-1018) - US Navy Landing Craft Infantry LCI(L)-1058 (LCI(L)-1058) - US Navy Landing Craft Infantry LCI(L)-593 (LCI(L)-593) - US Navy Landing Craft Infantry LCI(L)-964 (LCI(L)-964) - US Navy Tank landing ship LST 1008 (LST 1008) - US Navy Frigate Sandusky (PF-54)

1945: Royal Navy MS Trawler Biggal (T 404) - Royal Navy Motor Gun Boat MGB 509 (MGB 509) - Royal Navy Submarine Tireless (P 327) - US Navy Motor torpedo boat PT 640 - US Navy Motor torpedo boat PT 697

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 18 April (7)


1940: Royal Navy Submarine Sterlet (N 22)

1941: Royal Navy Armed boarding vessel Fiona

1942: Royal Navy Tug Andromeda

1943: Royal Navy Submarine P 615 (P 615) - Royal Navy Submarine Regent (N 41)

1944: US Navy Submarine Gudgeon (211) - Soviet Navy Submarine L-6

More information on Allied Warships losses.


General Events on 18 April


1940

Royal Navy Heavy cruiser HMS Dorsetshire: HMS Dorsetshire (Capt. B.C.S. Martin, RN) was undocked.

Royal Navy Light cruiser HMS Gloucester: HMS Gloucester (Capt. F.R. Garside, CBE, RN) returned to Simonstown.

Royal Dutch Navy Submarine HNMS O 15: HrMs O 15 (Lt. H.M.L.F.E. van Oostrom Soede, RNN) shifted from Oranjestad, Aruba, to Willemstad, Curacao.

Royal Navy Submarine HMS Grampus: HMS Grampus (Lt.Cdr. C.A. Rowe, RN) arrived at Singapore.

Royal Navy Submarine HMS Sealion: HMS Sealion (Lt.Cdr. B. Bryant, RN) ended her 6th war patrol at Harwich.

Royal Navy Submarine HMS Shark (i): Between 0326 and 0331 hours, HMS Shark (Lt.Cdr. P.N. Buckley, RN), was depth charged by enemy A/S trawlers. A total of six depth charges were dropped fairly close but no damage was sustained.

Royal Navy Submarine HMS Seawolf: HMS Seawolf (Lt.Cdr. J.W. Studholme, RN) torpedoed and sank the German merchant Hamm (5874 GRT, built 1921) in the Skagerrak in position 58°09'N, 10°32'E. Hamm was in convoy together with Itauri (6838 GRT, built 1923), Wolfram (3648 GRT, built 1921). They were escorted by four trawlers from the 15 Vorposten Flotilla. (All times are zone -1) 0100 hours - In position 58°09'N, 10°32'E sighted a southbound convoy of three merchant ships of average size escorted by four large A/S trawlers. Started an attack in which two torpedoes were fired at the 2nd ship and four at the 3rd ship. Range on firing was about 4000 yards. Observed a hit on the 2nd ship, just abaft the funnel. Also heard a hit on the 3rd ship. After firing the torpedoes turned away and retired on the surface to the north-west at full speed. One ship was seen to be on fire. After having proceeded to the north-west for a while turned west to reload and charge the battery.

Royal Navy Submarine HMS Spearfish: HMS Spearfish (Lt.Cdr. J.H. Forbes, RN) was docked at Blyth.

Royal Navy Submarine HMS Sterlet: At 2142 hours (zone -1), a German convoy, made up of the German transports Moltkefels (7862 GRT, built 1940), Neidenfels (7838 GRT, built 1939), Hanau (5892 GRT, built 1921) escorted by the German minesweeper M 75 and the German auxiliaries M 528 / Pelikan, M 581 / Nautilus, Elbe and T 190, reported being attacked with torpedoes near position 58°57'N, 10°36'E. If this attack is genuine the attacker must have been HMS Sterlet (Lt.Cdr. G.H.S. Haward, RN). The German auxiliary submarine chasers UJ 125, UJ 126 and UJ 128 were patrolling nearby and started a hunt which might have sunk HMS Sterlet.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. E.A. Woodward, RN) shifted from Portland to Portsmouth.

Royal Navy Submarine HMS H 32: HMS H 32 (Lt. M.D. Wanklyn, RN) participated in A/S exercises off Portland.

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. E.D. Norman, RN) participated in A/S exercises off Portland.

Royal Navy Submarine HMS H 44: HMS H 44 (Lt. E.D. Norman, RN) participated in A/S exercises off Portland.

Royal Navy Destroyer HMS Basilisk: Involved in the rescue of a Whitley bomber crew that had been forced to ditch in the North Sea during operations to Trondheim. The aircraft in question was Whitley V N1352 KN-B of 77 Squadron, operating from a forward base at Kinloss, taking off at 1735 to bomb the airfield at Trondheim. At 2207 hours, a distress call from the aircraft was received and further calls were monitored over the next half hour or so. Shortly after 2234, the crew ditched. At around 0200 hours, the following morning, HMS Basilisk (Cdr. M. Richmond, RN) came on the scene and picked up four survivors; F/O Chance, Sgt Tindall, LAC O'Brien and AC1 Douglas. The body of the pilot, P/O R Hall (43151) was also recovered, and this officer now rests in Lerwick New Cemetery, though his home was in Yorkshire.

French Navy Large destroyer FR Albatros: Albatros departed Brest in escort of Convoy FP 2, en route Greenock, Scotland. Arrived at Greenock on 20 April.

French Navy Large destroyer FR Vautour: Vautour departed Brest in escort of Convoy FP 2, en route Greenock, Scotland. Arrived at Greenock on 20 April.

French Navy Minesweeper FR Chamois: Chamois departed Brest in escort of Convoy FP 2, en route Greenock, Scotland. Arrived at Greenock on 21 April.

French Navy Minesweeper FR Commandant Delage: Commandant Delage departed Brest in escort of Convoy FS 2, en route Greenock, Scotland. Arrived at Greenock on 21 April.

1941

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

Royal Dutch Navy Submarine HNMS O 10: HrMs O 10 (Lt. J.H. Geijs, RNN) departed Rothesay for Londonderry. She was escorted by HMS Wellard (Lt.(Retd.) R.F. Turnbull RD, RNR).

Royal Navy Submarine HMS Clyde: Having completed her refit at the Devonport Dockyard, HMS Clyde (Cdr. D.C. Ingram, DSC, RN), commenced trials off Plymouth.

Royal Navy Submarine HMS Clyde: HMS Clyde (Cdr. D.C. Ingram, DSC, RN) conducted D/G trials at Plymouth.

Royal Navy Submarine HMS Sunfish: HMS Sunfish (Lt. G.R. Colvin, RN) departed Portsmouth for passage to Sheerness. She made the passage in convoy CE 31 together with HMS L 27 (Lt. H.N. Edmonds, DSC, RN) and HMS H 50 (Lt. P.R.H. Harrison, DSC, RN). The latter however was forced to return to Portsmouth shortly after departure with engine defects.

Royal Navy Submarine HMS Trident: HMS Trident (Lt.Cdr. G.M. Sladen, DSC, RN) ended her refit at Troon. She returned to Holy Loch the next day. En-route trials and exercises were carried out which included special W/T trials with HMS La Capricieuse (Lt.Cdr. S.A. Jones, RNR).

Royal Navy Submarine HMS Triumph (i): During the afternoon HMS Triumph (Lt.Cdr. W.J.W. Woods, RN) briefly returns to Alexandria. She departed again for the Bardia area after a few hours.

Royal Navy Submarine HMS Unique: HMS Unique (Lt. A.F. Collett, RN) was docked at Malta.

Royal Navy Submarine HMS Urge: HMS Urge (Lt. E.P. Tomkinson, RN) torpedoed and sank the Italian tanker Franco Martelli (10535 GRT, built 1939) in the Bay of Biscay in position 46°51'N, 08°29'W. Of the tankers crew of 34, one was missing. 1124 hours - Heard HE bearing 240°. 1127 hours - In position 46°51'N, 08°29'W sighted a large tanker at a range of 5000 yards. Started attack. There was no escort. 1137 hours - Fired two torpedoes from 1500 yards. The second torpedo hit in the engine room. As the ship then stopped but did not sink another torpedo was fired that hit under the bridge. 1212 hours - The tanker was seen to sink. The Franco Martelli was a blockade breaker and was en-route from Recife, Brasil to Bordeaux, France.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. A.C.G. Mars, RN) participated in A/S exercises off Tobermory.

Royal Navy Submarine HMS H 31: HMS H 31 (Lt. R.D. Whiteway-Wilkinson DSC, RN) arrived at Rothesay.

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 34: HMS H 34 (Lt. C.P. Norman, RN) arrived at Rothesay.

Royal Navy Battleship HMS Prince of Wales: HMS Prince of Wales (Capt. J.C. Leach, MVO, RN) conducted gunnery exercises and RD/F trials to the west of Scapa Flow together with HMS Hermione (Capt. G.N. Oliver, RN). They were escorted by the destroyers HMS Tartar (Cdr. L.P. Skipwith, RN), HMS Arrow (Cdr. R.E. Hyde-Smith, RN) and HMS Achates (Lt.Cdr. Viscount Jocelyn, RN). When Hermione left at 1102 hours, HMS Achates took over the duty as 'target ship'.

1942

US Navy Submarine USS Searaven: USS Searaven (Lt.Cdr. H. Cassedy) evacuates 32 Royal Australian Air Force men from Timor.

Royal Navy Submarine HMS Una: While laying on he bottom of the harbour at Malta HMS Una (Lt. C.P. Norman, RN) is near missed by a bomb causing many minor defects, most could by repaired quickly.

Royal Navy Submarine HMS Proteus: HMS Proteus (Lt.Cdr. P.S. Francis, RN) departed Alexandria for her 13th war patrol (12th in the Mediterranean). She was ordered to patrol in the Ionian Sea and the west coast of Greece. For the daily and attack positions of HMS Proteus during this patrol see the map below.

Royal Navy Submarine HMS Clyde: At 0500 hours, HMS Clyde (Cdr. D.C. Ingram, DSC, RN), again bottomed in Pie Ta Creek. At 1700 hours a large bomb was dropped about 100 yards away but Clyde sustained no damage. At 2010 hours, HMS Clyde surfaced and again secured at the torpedo depot to continue unloading the cargo.

Royal Navy Submarine HMS Porpoise: HMS Porpoise (Cdr. E.F. Pizey, DSC, RN) departed Alexandria for her 4th storage trip to Malta. For the daily positions of HMS Porpoise during this passage see the map below.

Royal Navy Submarine HMS Sturgeon: HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN) departed Holy Loch for Lerwick. She made the passage together with HMS P 43 (Lt. A.C. Halliday, RN). They were escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN).

Royal Navy Submarine HMS Trident: HMS Trident (Lt. A.R. Hezlet, DSC, RN) fires two torpedoes against 'what is identified as' a laden 3000 ton merchant ship, southbound, in position 64°32'N, 10°33'E. Both torpedoes missed their target. 1400 hours - In position 64°32'N, 10°33'E fired two torpedoes against a laden southbound merchant ship of about 3000 tons from 1000 yards. Both torpedoes missed and were heard to explode on the shore.

Royal Navy Submarine HMS Torbay: HMS Torbay (Cdr. A.C.C. Miers, DSO and Bar, RN) torpedoed and sank the German army cargo ship Bellona (1297 GRT, built 1929) in the Ionian Sea about 50 nautical miles east-south-east of Capo Colonna, Italy in position 38°52'N, 18°15'E. (All times are zone -3) 0556 hours - In position 38°58'N, 18°17'E sighted a darkened ship on a Southerly course about a mile to the North-Eastward. Alarm was sounded and during the next 20 minutes the contacts identity could not be established. The officer of the watch and the yeoman of signals thought it to be a submarine while Cdr. Miers thought, after considerable doubt, it was a small destroyer / torpedo boat. (It was actually the Italian destroyer Strale) No H.E. could be heard and its speed was dead slow which was very puzzling. 0818 hours - Dived as it will soon be getting light. 0858 hours - Sighted the enemy bearing and steering South-East. It was due to the bad visibility still not possible to identify the contact. 0751 hours - In position 38°58'N, 18°17'E H.E. was heard fine on the port bow (the contact had been to starboard) and a fully laden merchant ship was seen to be crossing the bow from port to starboard on a south-westerly course at a range of about 3000 yards. At the same time the original contact came round to a similar course and could at last be identified as a single-funnelled destroyer. Thus it appeared that Torboy had stumbled upon a rendezvous of a merchant ship from the Adriatic with its escort from Taranto so the slow speed of the latter was accounted for. Torbay followed the enemy. 0825 hours - In position 38°46N, 18°17E fired two torpedoes at the merchant ship. Both torpedoes hit their target after 3,5 minutes. It was now also sighted that two aircraft were present at the scene. Cdr. Miers took Torbay deep and set course for Souda Bay, Crete.

Royal Navy Submarine HMS Thorn: HMS Thorn (Lt.Cdr. R.G. Norfolk, RN) departed from Port Said for Alexandria.

Royal Navy Submarine HMS Upright: HMS Upright (Lt. J.S. Wraith, DSC, RN) departed Holy Loch for Blyth. She was escorted by HMS La Capricieuse.

Royal Navy Submarine HMS Uproar: It was hoped to fire a Mark IV torpedo at the base of the viaduct north of Taormina but the bad weather prevented the attempt.

Royal Navy Submarine HMS Umbra: HMS P 35 (Lt. S.L.C. Maydon, RN) attacked the Italian merchant Nino Bixio (7137 GRT, built 1941) about 40 nautical miles south-west of Lampedusa in position 35°05'N, 11°49'E. All torpedoes fired missed their target. [She was on a trip from Tripoli to Naples escorted by the destroyers Antonio Pigafetta and Nicolo Zeno.] (All times are zone -1 or -2) 0630 hours - Sighted a 6000 tons merchant vessel escorted by two destroyers. Started attack. 0655 hours - In position 35°05'N, 11°49'E fired 3 torpedoes from 5800 yards. It was thought one probable hit was obtained but this was not the case. 0704 hours - The first pattern of 4 depth charges was dropped. After this attack only 2 more depth charges were dropped. None caused any damage. 0734 hours - Returned to periscope depth. Sighted the target bearing 338°.

Royal Navy Submarine HMS Unison: HMS P 43 (Lt. A.C. Halliday, RN) departed Holy Loch for Lerwick. She made the passage together with HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN). They were escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN).

Royal Navy Submarine HMS United: HMS P 44 (Lt. T.E. Barlow, RN) is undocked and then immediately proceeded from Ardrossan to Holy Loch.

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

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. R.E. Boddington, RN) returned to Rothesay.

Royal Navy Submarine HMS H 33: HMS H 33 (Lt. M.E. Faber, RN) conducted exercises in the Clyde area.

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

Royal Navy Submarine HMS H 50: HMS H 50 (Lt. M.L.C. Crawford, DSC, RN) participated in A/S exercises off Lough Foyle.

Royal Navy Submarine HMS P 511: HMS P 511 (Lt. D.E.O. Watson, DSC, RN) departed Tobermory for Rothesay.

Royal Navy Submarine HMS P 514: HMS P 514 (Lt. J.W.S. Culham, RN) participated in A/S exercises at St. Margaret's Bay. Upon completion of these exercises she returned to Halifax in very heavy weather. Due to this heavy weather a defect to the forward hydroplanes was sustained.

US Navy Submarine USS S-20: USS S-20 arrived at Casco Bay, Maine from New London, Connecticut.

US Navy Submarine USS R-2: USS R-2 (Lt. D.T. Hammond, 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-20: USS R-20 (Lt.Cdr. C.B. Stevens, Jr., USN) conducted exercises off Key West.

US Navy Aircraft carrier USS Hornet (i): The Hornet took place in carrying some 16 bombers, the first to take off from a carrier in history, to some 400 miles off Japan to take place in the Doolittle Raid on Tokyo. Due to some infiltrations by an enemy patrol boat, the Hornet launched the planes 12 hours ahead of schedule. The patrol boat was sunk.

US Navy Aircraft carrier USS Hornet (i): USS Hornet launched 16 B-25 Mitchell Medium Bombers towards Tokyo.

Royal Navy Submarine HMS L 23: HMS L 23 (Lt. M.G.R. Lumby, RN) participated in A/S exercises at / off Scapa Flow with HMS Seagull (Lt.Cdr. C.H. Pollock, RN) and HMS Bramble (Capt. J.H.F. Crombie, RN).

1943

Royal Canadian Navy Corvette HMCS Arvida: HMCS Arvida (T/Lt. D.G. King, RCNVR) picks up 50 survivors from the British merchant Fort Rampart that was torpedoed and finally sunk with gunfire by German U-boat U-226 about 900 nautical miles east-north-east of the Azores in position 47°28'N, 22°00'W.

Royal Dutch Navy Submarine HNMS O 21: HrMs O 21 (Lt.Cdr. J.F. van Dulm, RNN) conducts Special operation 'May'. Two groups of four men each were landed on the Malayan coast to the South of the Sembilan Islands.

US Navy Submarine USS Pollack: USS Pollack (Lt.Cdr. Robie E. Palmer) ended her 6th war patrol at Midway.

US Navy Submarine USS Narwhal: With her overhaul and trials completed USS Narwhal (Cdr. Frank Devere Latta) left San Diego bound for Dutch Harbour, Alaska loaded with soldiers of the 7th Infantry Scout Company.

US Navy Submarine USS Drum: USS Drum (Lt.Cdr. B.F. McMahon) torpedoed and sank the Japanese ammunition ship Nisshun Maru (6380 GRT) about 200 nautical miles north-north-west of Mussau Island, Bismarck Archipelago in position 01°55'N, 148°24'E.

Royal Navy Submarine HMS Rorqual: HMS Rorqual (Lt.Cdr. L.W. Napier, RN) departed Malta for her 25th war patrol (21th in the Mediterranean). She was ordered to lay a minefield to the West of Sicily. For the daily and attack positions of HMS Rorqual during this patrol see the map below.

Royal Navy Submarine HMS Satyr: HMS Satyr (Lt. T.S. Weston, RN) returned to Holy Loch.

Royal Navy Submarine HMS Sickle: HMS Sickle (Lt. J.R. Drummond, DSC, RN) departed Gibraltar for her 2nd war patrol (1st in the Mediterranean). She was ordered to perform a work up patrol off Valencia, Spain and to proceed to Algiers afterwards. For the daily and attack positions of HMS Sickle during this patrol see the map below. HMS P 224 2nd war patrol click here for bigger map

Royal Navy Submarine HMS Splendid: HMS P 228 (Lt. I.L.M. McGeogh, DSO, RN) departed Malta for her 8th war patrol (7th in the Mediterranean). She was ordered to patrol off Naples, Italy.

Royal Navy Submarine HMS Sportsman: HMS Sportsman (Lt. R. Gatehouse, DSC, RN) conducted exercises off Gibraltar together with HMS Sickle (Lt. J.R. Drummond, DSC, RN) and HMS Trespasser (Lt.Cdr. R.M. Favell, RN).

Royal Navy Submarine HMS Stubborn: HMS Stubborn (Lt. A.A. Duff, RN) is ordered to take up a patrol position near Jan Mayen Island for a anti-uboat patrol.

Royal Navy Submarine HMS Trident: HMS Trident (Lt. P.E. Newstead, RN) ended her 33th war patrol (2nd in the Mediterranean) at Algiers

Royal Navy Submarine HMS Taku: HMS Taku (Lt. A.J.W. Pitt, RN) conducted exercises off Plymouth.

Royal Navy Submarine HMS Torbay: HMS Torbay (Lt. R.J. Clutterbuck, RN) is damaged by an enemy air raid on Algiers harbour. A bomb landed 15 feet to the starboard side of the conning tower. Damage was severe; 148 battery cells were cracked, the starboard saddle tanks were bent and leaking, the gyro compass was broken, several electrical defects, several defects to the high pressure air system, defects to the telemotor system and several there were many smaller defects.

Royal Navy Submarine HMS Unbending: HMS Unbending (Lt. E.T. Stanley, DSC, RN) arrived at Algiers. She departed for Gibraltar later the same day.

Royal Navy Submarine HMS Unbroken: HMS Unbroken (Lt. B.J.B. Andrew, DSC, RN) departed Malta for her 16th war patrol (also 16th in the Mediterranean). She was ordered to patrol north of Sicily. For the daily and attack positions of HMS Unbroken during this patrol see the map below.

Royal Navy Submarine HMS Unseen: HMS Unseen (Lt. M.L.C. Crawford, DSC, RN) torpedoed and sank the German auxiliary submarine chaser UJ-2205 (1168 GRT, former French Le Jacques Coeur, built 1933) north-north-west of Isola di Femmine, Sicily, Italy in position 38°15'N, 13°13'E. The convoy attacked by Unseen was made up of the Italian tanker Bivona (1646 GRT, former French Socombel, built 1943) escorted by the German auxiliary submarine chasers UJ 2203, UJ 2208 and the above mentioned UJ 2205 as well as the Italian patrol boats VAS 207 and VAS 230. UJ 2205 was hit in the engine room and sank at 1145 hours. Four had been killed and eleven seriously wounded, the Italian VAS boats came alongside to rescue the survivors while UJ 2203 hunted the submarine. Bivona was forced to return to Palermo and sailed again the next day only to be sunk by HMS Unrivalled. (All times are zone -2) 1038 hours - In position 38°16'N, 13°11'E sighted three ships in line abreast escorted by two E-boats and two or more flying boats. Started attack. 1103 hours - Fired four torpedoes at a small tanker from a range of 800 yards. One hit was obtained and HE ceased immediately. 1110 to 1400 hours - The two E-boats started a counter attack. Depth charges were dropped singly. By 1200 hours 11 depth charges had been dropped. By 1400 hours a further 20 charges had been dropped.

Royal Navy Submarine HMS Unsparing: HMS Unsparing (Lt. A.D. Piper, DSC and 2 bars, RD, RNR) and HMS Upstart (Lt. P.C. Chapman, DSC and Bar, RN), this last one after having undocked at Port Bannatyne, conducted attack exercises in the Clyde area during which HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR) served as target. Upon completion of these exercises both submarines conducted a trial run on the Arran measured mile. During the night of 18/19 April 1943, HMS Unsparing and HMS Upstart both conducted attack exercises in the Clye area during which they made attacks on each other.

Royal Navy Submarine HMS Untamed: HMS Untamed (Lt. G.M. Noll, RN) conducted exercises in the Clyde area.

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. J.P. Angell, RN) conducted A/S exercises off Campbeltown with HMS Bedlington (A/Skr.Lt. J.H.D. Dansie, RNR) 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 Bretwalda (Skr.Lt. J.R. Coultas, RD, RNR) and HMS L' Atlantique (Skr. A. McKay, RNR).

US Navy Submarine USS S-33: USS S-33 (Lt.Cdr. C.B. Stevens, Jr.) returns to Dutch Harbour.

Soviet Navy Submarine USSR M-172: M-172 fires two torpedoes against the German merchant Adolf Binder (3515 GRT) off the Varangerfjord near Kiberg. Both torpedoes missed their target.

1944

US Navy Submarine USS Tambor: USS Tambor (Lt.Cdr. R. Kefauver) sank the Japanese guard boat Shinku Maru No.3 (300 GRT) with gunfire about 300 nautical miles north-west of Wake Island in position 22°07'N, 160°31'E.

US Navy Submarine USS Billfish: USS Billfish (Cdr. V.C. Turner, USN) departed from Fremantle for her 4th war patrol. She was ordered to patrol off the Marianas. Before proceeding on patrol exercises were carried out off Fremantle. For daily and attack positions (though incomplete) for USS Billfish during this patrol see the map below.

Royal Navy Submarine HMS Ursula: HMS Ursula (Lt. A.G. Davies, RN) conducted A/S exercises off Methill with HMS Castleton (Lt. S.E. Jagger, RN), HMS Polka (T/Lt. I.A. Thorpe, MBE, RNVR), HMS Leicester City (T/Lt. C.E. Irving, RNVR), HMS Valse (T/Lt. E.J. Newell, RNVR) and HMS Spurs (A/Skr.Lt. E.J. Day, RNR).

Royal Navy Submarine HMS Proteus: HMS Proteus (T/Lt. P.S. Parmenter, RNR) conducted exercises in the Clyde area.

Royal Navy Submarine HMS Sceptre: HMS Sceptre (Lt. I.S. McIntosh, MBE, DSC, RN) and X-24 arrive at Port HHZ.

Royal Navy Submarine HMS Sibyl: HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) lost contact with the other ships an put into Holyhead. She departed for Holy Loch later the same day with the other ships.

Royal Navy Submarine HMS Seraph: After a few days of trials off Sheerness HMS Seraph (Lt. T. Russell-Walling, RN) departed that port for Portland. She was escorted by HMS Pincher (T/A/Lt.Cdr. C.B. Blake, RNVR) until 0915/19 when HMS En Avant (T/Skr. W. Bradshaw, RNR) took over the escort.

Royal Navy Submarine HMS Sea Nymph: HMS Sea Nymph (Lt. M.I. Usher, RN) departed New London for Philadelphia.

Royal Navy Submarine HMS Sickle: HMS Sickle (Lt. J.R. Drummond, DSO, DSC, RN) departed Gibraltar for Malta. She made the passage East in convoy UGS 38 together with HMS Spirit (Lt. A.W. Langridge, RN) and HMS Stratagem (Lt. C.R. Pelly, DSC, RN). For the daily positions of HMS Sickle during this passage see the map below. HMS Sickle passage Gibraltar - Malta click here for bigger map

Royal Navy Submarine HMS Sportsman: HMS Sportsman (Lt. R. Gatehouse, DSC, RN) departed Malta for her 11th war patrol (10th in the Mediterranean). She was ordered to patrol in the Aegean. For the daily and attack positions of HMS Sportsman during this patrol see the map below. HMS Sportsman 11th war patrol click here for bigger map

Royal Navy Submarine HMS Stratagem: HMS Stratagem (Lt. C.R. Pelly, DSC, RN) departed Gibraltar for Malta. She made the passage together with HMS Sickle (Lt. J.R. Drummond, DSC, RN) and HMS Spirit (Lt. A.W. Langridge, RN). The submarines made the passage to Malta in convoy USG 38. For the daily positions of HMS Stratagem during this passage see the map below. HMS Stratagem passage Gibraltar - Trincomalee click here for bigger map  

Royal Navy Submarine HMS Spirit: HMS Spirit (Lt. A.W. Langridge, RN) departed Gibraltar for Malta. She made the passage together with HMS Sickle (Lt. J.R. Drummond, DSC, RN) and HMS Stratagem (Lt. C.R. Pelly, DSC, RN). The submarines made the passage to Malta in convoy USG 38. For the daily positions of HMS Spirit during the passage to the Far East see the map below. HMS Spirit passage Gibraltar - Trincomalee click here for bigger map

Royal Navy Submarine HMS Statesman: HMS Statesman (Lt. R.G.P. Bulkeley, RN) and HMS Vigorous (Lt. J.C. Ogle, DSC, RN) departed Holy Loch for Lerwick. They were escorted by HMS Cutty Sark.

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 Truant: HMS Truant (Lt. E.C. Croswell, DSC, RN) arrived at Larne.

Royal Navy Submarine HMS Taurus: HMS Taurus (Lt.Cdr. M.R.G. Wingfield, DSO, DSC and Bar, RN) lays mines off Penang (MLO 3). An opportunity to attack a Japanese submarine was missed later this day. Later Taurus is detected by Japanese A/S vessels and depth charged. No damage was done. (All times are zone -6.5) 0900 hours - Started mine laying near position 05°06'N, 100°12'5"E. Three strings of four mines were laid. 1045 hours - Completed mine laying. -------------------------------------------- 1235 hours - HE was reported to the Southward. As there were many junks in the direction no target could be seen at first. However, soon a submarine was sighted. Range was 5000 yards. Started attack. Taurus was not able to reach a good position for firing torpedoes so the submarine passed by without being attacked. -------------------------------------------- 1520 hours - Sighted two ships approaching from the North. One was an A/S trawler, the other was thought to be a small merchant vessel. Started attack. After running in for three minutes at high speed and shortly before firing torpedoes both enemy ships were seen to turn bows on to Taurus. Range was about 2000 yards. Taurus went to 50 feet. Seven depth charges were dropped but none was close. Both ships then made off to the South and a submarine chaser took over the hunt. She however never made contact and Taurus was able to escape.

Royal Navy Submarine HMS Templar: HMS Templar (Lt. T.G. Ridgeway, RN) conducted excercises off Trincomalee.

Royal Navy Submarine HMS Trespasser: HMS Trespasser (Lt.Cdr. R.M. Favell, RN) arrived at Aden.

Royal Navy Submarine HMS Thorough: HMS Thorough (Lt.Cdr. J.G. Hopkins, RN) shifted from Larne to Holy Loch. She was escorted by HMS ML 225 (T/Lt. D. Kaye, RNVR).

Royal Navy Submarine HMS Ultimatum: HMS Ultimatum (Lt. W.H. Kett, DSC, RNR) conducted exercises off Malta.

Royal Navy Submarine HMS H 28: HMS H 28 (Lt. A.S. Melville-Ross, DSC, RN) conducted A/S exercises off Lough Foyle with HMCS Camrose (T/A/Lt.Cdr. L.R. Pavillard, RCNR) and HMS Watchman (Lt. C.E. Sheen, DSC, RN).

Royal Navy Submarine HMS H 32: HMS H 32 (Lt. M.D. Hutley, RNR) conducted A/S exercises off Stornoway with HMS Charlock (T/Lt. J.E.B. Healy, RNVR).

Royal Navy Submarine HMS H 34: HMS H 34 (Lt. R.L. Jay, RN) conducted A/S exercises off Campbeltown with HMS Bedlington (Skr. A.W. Peak, RNR) and HMS St. Modwen (Lt.Cdr. J.M. Lycett, DSC, RNR).

Royal Navy Submarine HMS H 43: HMS H 43 (Lt. F.R. Lawrence, RN) shifted from Oban to Tobermory.

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

Royal Navy Submarine HMS H 50: HMS H 50 (T/Lt. A.F. Wicker, RNVR) conducted A/S exercises off Lough Foyle with HMCS Dauphin (T/Lt. M.H. Wallace, RCNR) and HMS Wellington (Cdr. G.A. Thring, DSO, RN).

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-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 L-6: At 0708 hours L-6 once again fired torpedoes against the Hungarian merchant Kassa (1022 GRT) in the Black Sea in position 43°38'N, 32°13'E. The torpedoes missed their target. At 1106 hours L-6 fired torpedoes against the Rumanian merchant Alba Julia (5700 BRT) in the Black Sea in position 43°28'N, 31°32'E. The Alba Julia was already damaged and on fire after being attacked by Soviet aircraft. The torpedoes fired by L-6 missed their target and L-6 was sunk during a counter attack.

Soviet Navy Submarine USSR M-105: M-105 fires two torpedoes at ' what is identified as ' a merchant off the Syltefjord. Both torpedoes missed their target.

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

1945

US Navy Destroyer USS Hyman: USS Hyman arrived at Saipan.

US Navy Destroyer USS Thomas E. Fraser: USS Thomas E. Fraser departed from Guam bound for Saipan.

US Navy Destroyer USS Rathburne: Escorted LST Group 91 to Okinawa, arriving at Kerama Retto on the 18th of April.

US Navy Battleship USS Iowa: USS Iowa (Capt. J.L. Holloway, Jr., USN) arrived at Ulithi.

Royal Dutch Navy Submarine HNMS O 19: HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) attacked but missed the Japanese heavy cruiser Ashigara west-north-west of Batavia in position 05°40'S, 106°20'E. Four torpedoes were fired from long range and none hit the target. Ashigara was escorted by the Japanese destroyer Kamikaze. (All times are zone -9) In position 05°40'S, 106°20'E sighted a Nachi-class heavy cruiser escorted by a destroyer bearing 142°, range about 5 nautical miles. Enemy course was 340°. Started attack. 1041 hours - Fired four torpedoes from 6000 yards. No hits were obtained. Set course to clear the area but no counter attack developed.

Royal Dutch Navy Submarine HNMS O 23: HrMs O 23 (Lt.Cdr. A.J. Schouwenaar, RNN) conducted attack exercises in the Clyde area during which HMS Hastings (A/Cdr. E.A. Stocker, DSC, RN) served as the target. Following these exercises O 23 proceeded to Loch Goil for sound trials. Upon completion of these sound trials O 23 proceeded to Holy Loch.

Royal Dutch Navy Submarine HNMS Zeehond: HrMs Zeehond (Lt. S.H. de Boer, RNN) conducted exercises off Scapa Flow with HMS Trusty (Lt. W. St.G. Anderson, DSC, RNR).

US Navy Submarine USS Stingray: USS Stingray arrived in the Panama Canal Zone.

US Navy Submarine USS Bluegill: USS Bluegill (Cdr. E.L. Barr, Jr.) ended her 5th war patrol at Subic Bay, Philippines.

US Navy Submarine USS Cabrilla: USS Cabrilla (Lt.Cdr. H.C. Lauerman, USN) claims to have either sunk or damaged an engines aft medium freighter east of Hoikkaido, Japan. The claim could not be confirmed post war. (All times are zone K, -10) 1708 hours - In position 41°53'N, 143°39'E picked up echo-ranging on sound bearing 105°(T). Closed submerged. Could not see anything due to bad visibility. 1740 hours - Echo-ranging now coming in very loud. Nothing in sight visually and no contact with the ST radar. 1757 hours - Sighted the target through the mist. 1758 hours - Manned battle stations and rigged for silent running. 1804 hours - Sighted a second target bearing 136°(T), range about 5000 yards. Finally made out the pinger to be a sea truck or something similar worth two torpedoes. 1806 hours - Identified the second target to be an engines aft freighter of about 3-4000 tons. 1810 hours - The targets tracked on a base course of 305°(T), speed 7.5 knots. 1819 hours - In position 41°50'N, 143°35'E fired two torpedoes at the escort set at four feet. Range was 3000 yards. 1820 hours - Shifted setup to the freighter and fired the remaining four bow torpedoes at her from 2800 yards. Lost depth control on firing due to a malfuntion and ended up at 635 feet. 1824 hours - Heard one good hit thoght to be no.5 torpedo. 1827 hours - The escort dropped eight depth charges. 1837 hours - Slowly started working our way to periscope depth. 1916 hours - At periscope depth. All clear. 2000 hours - Finally had the boat trimmed correctly and the bilges pumped out. 2020 hours - Surfaced.

US Navy Submarine USS Roncador: USS Roncador (Cdr. E.R. Crawford, USN) arrived at Newport Rhode Island from New London, Connecticut for torpedo trials.

US Navy Submarine USS Seahorse: USS Seahorse (Cdr. H.H. Greer, Jr) is damaged by depth charges in Tsushima Strait in position 33°45'N, 128°26'E and is forced to terminate her patrol.

US Navy Submarine USS Chub: USS Chub (Cdr. C.D. Rhymes, Jr., USN) ended her 1st war patrol at Fremantle, Australia. At Fremantle she was refitted by a relief crew from Submarine Division 301.

US Navy Submarine USS Sea Owl: USS Sea Owl (Cdr. C.L. Bennett) attacked the Japanese submarine I-372 (offsite link) while this submarine is unloading it's cargo at Wake Island. Cdr. Bennett fires three torpedoes, two are duds and one hit the pier the I-372 is moored at. The Japanese submarine crash-dives and continues unloading it's cargo the next day.

US Navy Submarine USS Sea Robin: USS Sea Robin (Cdr. P.C. Stimson) departed from Saipan bound for Pearl Harbor.

Royal Navy Submarine HMS Turpin: HMS Turpin (A/Lt.Cdr. J.S. Stevens, DSO and Bar, DSC, RN) is docked at Holy Loch in AFD 7.

Royal Navy Submarine HMS Sea Rover: HMS Sea Rover (Lt. H.S. May, RN) arrived at St. Johns, Canada.

Royal Navy Submarine HMS Sportsman: HMS Sportsman (Lt. P.L. Langley-Smith, RN) made rendez-vous with convoy MKS 95 and continued passage to the U.K.

Royal Navy Submarine HMS Scorcher: HMS Scorcher (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Scapa Flow with HMS Carysfort (Lt.Cdr. L. St.G. Rich, DSO and Bar, RN) and HMS Obdurate (Lt.Cdr. R.D. Franks, DSO, DSC, OBE, RN).

Royal Navy Submarine HMS Scorcher: HMS Scorcher (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Scapa Flow with HMS Bermuda (Capt. J.S. Bethell, CBE, RN) and ORP Garland (Lt. K. Hess).

Royal Navy Submarine HMS Sleuth: HMS Sleuth (Lt. K.H. Martin, RN) and HMS Solent (Lt.Cdr. J.D. Martin, DSC, RN) arrive at Exmouth Bay to fuel. Both submarines departed in company for their patrol area later the same day.

Royal Navy Submarine HMS Solent: HMS Solent (Lt.Cdr. J.D. Martin, DSC, RN) and HMS Sleuth (Lt. K.H. Martin, RN) arrive at Exmouth Bay to fuel. Both submarines departed in company for their patrol area later the same day.

Royal Navy Submarine HMS Taku: HMS Taku conducted exercises off Blyth with a training class of new submariners.

Royal Navy Submarine HMS Trusty: HMS Trusty (Lt. W. St.G. Anderson, DSC, RNR) conducts exercises with HrMs Zeehond (Lt. S.H. de Boer, RNN) and HMS Bellona (Capt. G.S. Tuck, DSO, RN).

Royal Navy Submarine HMS Thule: HMS Thule (Lt.Cdr. A.C.G. Mars, DSO, DSC, RN) made rendezvous with HMS Terpsichore (Cdr. R.T. White, DSO and 2 Bars, RN) in position 07°25'N, 83°18'E. The sick rating was transferred.

Royal Navy Submarine HMS Terrapin: HMS Terrapin (Lt. R.H.H. Brunner, DSC, RN) is undocked.

Royal Navy Submarine HMS Upright: HMS Upright (Lt. J.A.L. Wilkinson, RN) conducted attack exercises on each other with HMS Unruffled (T/Lt. A.H. MacCoy, DSC, SANF(V)).

Royal Navy Submarine HMS Ultimatum: HMS Ultimatum (Lt. P.D.C. Bennett, RN) conducted trials at Sheerness.

Royal Navy Submarine HMS Unrivalled: HMS Unrivalled (Lt. R.P. Fitzgerald, DSC, RN) conducted exercises off Plymouth.

Royal Navy Submarine HMS Ultor: After fuelling, HMS Ultor (Lt. J.P. Harvey, RN), returned to Tobermory from Oban.

Royal Navy Submarine HMS Unshaken: HMS Unshaken (Lt. J.S. Pearce, RNR) participated in A/S exercises off Newhaven.

Royal Navy Submarine HMS Urtica: HMS Urtica (Lt. R.C. Bucknall, RN) conducted exercises off Moelfre Bay.

Royal Navy Submarine HMS Vagabond: HMS Vagabond (Lt. I.M. Stoop, DSC, RN) conducted night exercises in the Clyde area. Upon completion of these she returned to Holy Loch. She proceeded from Holy Loch to Arrochar later the same day.

Royal Navy Submarine HMS Varne: At 0341 hours, HMS Varne (Lt. I.G. Raikes, DSC, RN), was illuminated by friendly destroyers that were operating in the area. HMS Varne was out of position and did not identify herself before crash diving. She was lucky not to be depth charged. The friendly destroyers encountered were HMS Scorpion (Cdr. C.W. McMullen, DSC, RN), HMS Savage (Lt.Cdr. C.W. Malins, DSO, DSC and Bar, RN), HMS Scourge (Lt.Cdr. C.G.H. Brown, DSC, RN) and HMS Zambesi (Lt.Cdr. J.M. Palmer, RN). They were on operation 'Invective', an anti-shipping raid.

Royal Navy Submarine HMS Vigorous: HMS Vigorous (Lt. D.S. Brown, RNVR) arrived at Trincomalee.

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-1: USS R-1 (Lt. W.A. Schoenfeld, USN) conducted A/S exercises off Casco Bay, Maine together with USS Straub (Lt.Cdr. J.E. Coie, Jr., USNR), USS Micka (Lt.Cdr. R.T. Reid, USNR), USS Gustafson (Lt.Cdr. A.E. Chambers, USNR) and USS Trumpeter (Lt.Cdr. G.B. Buck, Jr., USNR).

US Navy Submarine USS R-2: USS R-2 (Lt.Cdr. L.G. Bernard, 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-14: USS R-14 (Lt.Cdr. J.H. Cunningham, Jr., USNR) conducted exercises off Key West.

US Navy Submarine USS Runner (ii): USS Runner (ii) (Cdr. R.H. Bass, USN) conducted exercises off Key West.

US Navy Submarine USS Conger: Having completed her torpedo trials, USS Conger (Lt.Cdr. H.D. Sipple, USN), arrived at New London, Connecticut.

Royal Navy Submarine HMS Vengeful: HMS Vengeful (Lt. A.S. Melville-Ross, DSC, RN) departed Malta for Pireaus.

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