Events on this day
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.
The Shipyard Report
Laid down (36)
1917: Submarine H 32 (N 32)
1931: Destroyer Dainty (H 53)
1939: Submarine O 26
1942: Minesweeper BYMS 2066 (J 866) - Landing Craft Tank LCT 357 (LCT 357) - Minesweeper Paralos (M 204) - Oiler Pecos (OA 65) - Motor torpedo boat PT 78 - Submarine chaser SC-735 (SC-735) - Minesweeper YMS-143 (YMS-143) - Minesweeper YMS-144 (YMS-144)
1943: Corvette Flint Castle (K 383) - Minesweeper Plucky (J 295) - Minesweeper Recruit (J 298) - Minesweeper Rifleman (J 299) - Patrol craft PC-1186 (PC-1186) - Patrol craft PCS-1403 (PCS-1403) - Motor torpedo boat PT 311 - Submarine chaser SC-1074 (SC-1074)
1913: Battleship Provence
1927: Armed Merchant Cruiser Cheshire (F 18)
1928: Heavy cruiser Colbert
1935: Submarine ShCh-126
1944: Minesweeper Squirrel (J 301) - Landing Craft Infantry LCI(L)-598 (LCI(L)-598) - Landing craft tank LCT 873 (LCT 873) - Tank landing ship LST 1015 (LST 1015) - Motor torpedo boat PT 477 - Minesweeper YMS-442 (YMS-442)
1920: Sloop Clive (L 79 / U 79)
1921: Gunboat General Haller (H)
1927: Patrol vessel Pulaski (WPC 149)
1934: Large destroyer Milan
1941: Motor Launch ML 222 (ML 222)
1942: Submarine P 552 (P 552)
1943: Heavy cruiser Shropshire (83) - Harbour Defence Motor Launch HDML 1304 (ML 1304) - Motor Launch ML 580 (ML 580) - Minesweeper Admirable (AM 136) - Oiler Cossatot (AO 77) - Tank landing ship LST 67 (LST 67) - Destroyer Murray (DD 576) - Patrol craft PC-815 (PC-815) - Submarine chaser SC-1358 (SC-1358)
1944: Destroyer Escort Charles J. Kimmel (DE 584) - Destroyer Escort La Prade (DE 409) - Landing Craft Infantry LCI(L)-594 (LCI(L)-594) - Tank landing ship LST 659 (LST 659) - Patrol craft PCE(R)-850 (PCE(R)-850) - Motor torpedo boat PT 467 - Light cruiser Murmansk
1945: Harbour Defence Motor Launch HDML 1441 (ML 1441) - Harbour Defence Motor Launch HDML 1442 (ML 1442) - Tank landing ship LST 3021 (LST 3021) - Motor Launch ML 925 (ML 925) - Medium landing ship LSM 486 (LSM 486) - Submarine S-17
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 20 April (6)
1940: ASW Trawler Rutlandshire
1944: Destroyer Lansdale (DD 426)
More information on Allied Warships losses.
General Events on 20 April
Submarine HMS Ursula: HMS Ursula (Lt.Cdr. W.A.K.N. Cavaye, RN) ended her 8th war patrol at Blyth.
Submarine HMS Odin: HMS Odin (Lt.Cdr. K.M. Woods, RN) arrived at Suez. She then transited the Suez Canal and arrived at Port Said.
Submarine HMS Rainbow: HMS Rainbow (Lt.Cdr. J.D. Luce, RN) ended her 5th war patrol at Singapore.
Submarine HMS Narwhal: The German merchant Togo (5042 GRT, built 1938) is damaged when she hits a mine laid by the British submarine HMS Narwhal (Lt.Cdr. R.J. Burch, RN) on 13 April 1940 north of Laeso Island in position 57°26'N, 10°45'E
Submarine HMS Seal: HMS Seal (Lt.Cdr. R.P. Lonsdale, RN) arrived at Blyth.
Submarine HMS Swordfish: HMS Swordfish (Lt. P.J. Cowell, RN) fires 6 torpedoes against a German convoy about 17 nautical miles south-south-east of Larvik, Norway in position 58°48'N, 10°19'E. All torpedoes however missed their target. The convoy attacked was made up of the transports Scharhörn (2643 GRT, built 1927), Entrerios (5179 GRT, built 1923) and the depot ship Brommy escorted by submarine chasers of the 5th UJ-Gruppe (UJ A, UJ B, UJ E, UJ F). It is often stated the attack was on the German transport Santos but she sailed from Stettin only on the 22th. 1020 hours - Bombed at periscope depth by an enemy aircraft. No damage. 1025 hours - Heard HE. Went to periscope depth to investigate and found Swordfish surrounded by 5 F-class escort vessels and 1 larger escort vessel. Depth charges were dropped until 1230 hours causing some leaks. 1300 hours - Sighted smoke of a convoy to the south-east. Forced to go deep again. 1312 hours - Sighted the convoy again on the port bow. The convoy was made up of 3 merchant vessels escorted by 4 F-class escorts. Started attack. 1318 hours - In position 58°48'N, 10°19'E fired a salvo of 6 torpedoes from 5000 yards. No explosion or hits were heard. Swordfish was however hunted and depth charged until 1940 hours. 2044 hours - Surfaced. When opening the conning tower hatch the Commanding Officer was unable to ease the large pressure in the boat and the hatch flew open. The Commanding Officer and Leading Signalman were both knocked out. The First Lieutenant (Lt. H.A. Stacey, RN) took over command until 0800/22.
Submarine HMS Taku: HMS Taku (Lt.Cdr. V.J.H. Van der Byl, RN) ended her 1st war patrol at Rosyth.
Submarine HMS Triad: HMS Triad (Lt.Cdr. E.R.J. Oddie, RN) attacked a German convoy with six torpedoes. One or two hits were claimed. 0930 hours - Sighted a convoy of three ships escorted by four destroyers and one MTB. 1008 hours - Near position 58°14'N, 10°50'E fired six torpedoes from 2700 yards. Triad went deep upon firing. One or two hits were claimed. 1020 hours - Depth charging started. They were quite close causing some minor damage. Triad retired to the South at slow speed. HE slowly faded away. Triad had now expanded all torpedoes. According to German sources this convoy was made up of Togo (5042 GRT, built 1938), Pionier (3264 GRT, built 1934) and Ahrensburg (2988 GRT, built 1939). They were escorted by the torpedo-boats Jaguar, Falke, escort vessels F-5, F-8 and five R-boats. No torpedo hits were obtained.
Submarine HMS Truant: HMS Truant (Lt.Cdr. C.H. Hutchinson, RN) is undocked.
Submarine HMS H 32: HMS H 32 (Lt. M.D. Wanklyn, RN) participated in A/S exercises off Portland.
Submarine HMS H 44: HMS H 44 (Lt. E.D. Norman, RN) participated in A/S exercises off Portland.
Submarine HMS Unbeaten: HMS Unbeaten (Lt. E.A. Woodward, RN) arrived at Gibraltar.
Submarine HMS Sunfish: HMS Sunfish (Lt. G.R. Colvin, RN) departed Sheerness for passage to Blyth. She made the passage together with HMS L 27 (Lt. H.N. Edmonds, DSC, RN) in convoy FN 56.
Submarine HMS H 28: HMS H 28 (Lt. A.C.G. Mars, RN) shifted from Oban to Tobermory.
Submarine HMS H 33: HMS H 33 (Lt. C.H. Rankin, RN) participated in A/S exercises off Campbeltown.
Submarine HNMS K IX: HrMs K IX (Lt. T. Brunsting, RNN) and HrMs K XII (Lt.Cdr. H.C.J. Coumou, RNN(R)) departed Fremantle for Sydney. They were escorted by HrMs Abraham Crijnssen (Lt. A. van Miert, RNN),
Submarine HNMS O 19: HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Colombo for her 6th war patrol. She is ordered to patrol in the northern entrance of the Malacca Strait. For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.
Submarine HNMS O 10: HrMs O 10 (Lt. J.H. Geijs, RNN) departed Londonderry for Rothesay. She was escorted by HMS St. Modwen (Lt.Cdr. F.J. Webster, RNR).
Submarine USS Seadragon: USS Seadragon (Lt.Cdr. W.E. Ferrall, USN) made the southbound transfer of Lombok Strait.
Submarine USS Pompano: USS Pompano (Lt.Cdr. L.S. Parks) left Pearl Harbor for her second war patrol. She was ordered to patrol in the East China Sea.
Submarine USS Gato: USS Gato (Lt.Cdr. W.G. Myers) departed from Pearl Harbor for her 1st war patrol. She was ordered to patrol in the Marshall Islands area. Late May she was ordered to patrol west of Midway.
Submarine USS Greenling: USS Greenling (Lt.Cdr. H.C. Bruton) departed from Pearl Harbor for her 1st war patrol. She was ordered to patrol off the Marshall and Caroline Islands.
Submarine HMS Otway: HMS Otway (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted exercises in the Clyde area.
Submarine HMS Otus: HMS Otus (Lt. R.M. Favell, RN) conducted A/S exercises off Alexandria together with HMS Sikh (Lt. D.E. Cole-Hamilton, DSC, RN) and HMS Hasty (Lt.Cdr. N.H.G. Austen, RN).
Submarine HMS Sturgeon: HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN) arrived at Lerwick.
Submarine HMS Trident: HMS Trident (Lt. A.R. Hezlet, DSC, RN) torpedoed and sank the German merchant Hödur (5368 GRT, built 1913) in the Svefjord, Norway in position 64°38'N, 10°49'E. 1200 hours - Fired three torpedoes against an unescorted 6000 tons merchant vessel from 1700 yards. The first two torpedoes hit the target that capsized and sank in less than 5 minutes. The third torpedo missed and exploded on the shore.
Submarine HMS Thorn: HMS Thorn (Lt.Cdr. R.G. Norfolk, RN) departed from Alexandria for her 6th war patrol. She was ordered to patrol in the Gulf of Sirte. As no log is available no map can be displayed.
Submarine HMS Unbroken: During the night of 20/21 April 1942 HMS P 42 (Lt. A.C.G. Mars, RN) landed two SOE agents near Antibes, France. The patrol report does not shed light on the exact time and position.
Submarine HMS Unison: HMS P 43 (Lt. A.C. Halliday, RN) arrived at Lerwick.
Submarine HMS Unruffled: HMS P 46 (Lt. J.S. Stevens, DSC, RN) conducted exercises in the Clyde area.
Submarine HMS H 28: HMS H 28 (Lt. R.E. Boddington, RN) is docked at Rothesay.
Submarine HMS H 32: HMS H 32 (Lt. J. Whitton, RN) participated in A/S exercises off Campbeltown.
Submarine HMS H 33: HMS H 33 (Lt. M.E. Faber, RN) participated in A/S exercises off Campbeltown.
Submarine HMS H 43: HMS H 43 (Lt. F.D.G. Challis, DSC, RN) shifted from Campbeltown to Londonderry. She was escorted by HMS St. Modwen (Lt.Cdr. F.J. Webster, RNR).
Submarine USS R-2: USS R-2 (Lt. D.T. Hammond, USN) conducted exercises off Key West.
Submarine USS R-4: USS R-4 (Lt. P.W. Garnett, USN) conducted exercises off Key West.
Submarine USS R-10: USS R-10 (Lt. B.E. Lewellen, USN) conducted exercises off Key West.
Submarine USS R-11: USS R-11 (Lt.Cdr. E.C. Folger, Jr., USN) conducted exercises off Key West.
Submarine USS R-13: USS R-13 (Lt. A.R. Gallaher, USN) conducted exercises off Key West.
Submarine USS R-14: USS R-14 (Lt. G.W. Kehl, USN) conducted exercises off Key West.
Submarine USS R-20: USS R-20 (Lt.Cdr. C.B. Stevens, Jr., USN) conducted exercises off Key West.
Submarine USSR M-172: M-172 fires a torpedo against ' what is identified as ' a merchant of 5000 tons, but was in fact the German minesweeper M 251, off the Varangerfjord near Kiberg. The torpedo missed its target. After the attack M-172 was depth charged by M 251.
Light cruiser HNMS Tromp: HrMs Tromp (Capt. J.B. de Meester, RNN) conducted A/S exercises off Fremantle together with HrMs Tjerk Hiddes (Lt.Cdr. W.J. Kruys, RNN) and USS Gar (Cdr. P.D. Quirk, USN, USN).
Submarine HNMS K XII: HrMs K XII (Lt.Cdr. T. Brunsting, RNN) arrived at Exmouth Gulf to take on board fuel and fresh water.
Submarine HNMS O 9: HrMs O 9 (Lt.Cdr. J.F. Drijfhout Van Hooff, RNN) participated in A/S exercises off Campbeltown with HMS Valena (Lt.Cdr. E. Gleave, RNR) and HMS L' Atlantique (Skr. A. McKay, RNR).
Submarine HNMS O 10: HrMs O 10 (Lt.Cdr. Baron D.T. Mackay, RNN) participated in A/S exercises with ML's off Ardishaig.
Submarine USS Tuna: USS Tuna (Lt.Cdr. A.H. Holtz) ended her 6th war patrol at Brisbane.
Submarine USS Nautilus: USS Nautilus (Lt.Cdr. W.H. Brockman) departed from Pearl Harbor bound for Dutch Harbour, Alsaka.
Submarine USS Hoe: USS Hoe (Lt.Cdr. V.B. McCrea, USN) departed New London, Connecticut for the Panama Canal Zone.
Submarine USS Mingo: Having completed her torpedo firing tests, USS Mingo (Lt.Cdr. R.C. Lynch, Jr., USN), returned to New London, Connecticut from Newport, Rhode Island.
Submarine USS Muskallunge: USS Muskallunge (Lt.Cdr. W.A. Saunders, USN) departed New London, Connecticut and arrived at Newport, Rhode Island for torpedo firing tests.
Submarine USS Runner (i): USS Runner (Cdr. F.W. Fenno) lays mines off Pedro Blanco Rock near Hong Kong.
Submarine USS Scorpion: USS Scorpion (Lt.Cdr. W.N. Wylie) torpedoed and sank the Japanese auxiliary gunboat Meiji Maru No.1 (1934 GRT) off east central coast of Honshu, Japan in position 37°10'N, 141°25'E.
Submarine HMS Oberon: HMS Oberon (Lt.Cdr. J.W. McCoy, DSC, RN) served as target in the Clyde area for members of the C.O.Q.C. (Commanding Officers Qualifying Course) with were embarked in HMS Sealion (Lt. D.S.M. Verschoyle-Campbell, DSC, RN). Upon completion of these exercises HMS Oberon served as target for HMS Ultimatum (Lt. W.H. Kett, RNR).
Submarine HMS Satyr: HMS Satyr (Lt. T.S. Weston, RN) is undocked.
Submarine HMS Trusty: At 1200 hours (zone -4), HMS Trusty (Lt.Cdr. E.F Balston, DSO, RN), makes rendez-vouz in position 27°42'S, 40°10'E with HMS Jasmine (Lt.Cdr. (retired) C.D.B. Coventry, RNR) that is to escort her to Durban.
Submarine HMS Untamed: HMS Untamed (Lt. G.M. Noll, RN) shifted from Holy Loch to Arrochar.
Submarine HMS H 32: HMS H 32 (Lt. T.G. Ridgeway, RN) departed Sheerness for Portsmouth. She was escorted by the tug Mammouth.
Submarine HMS H 43: HMS H 43 (Lt. P.H. May, RN) departed Loch Eriboll to continue her passage to Blyth. She is still escorted by HMS Kihna (A/Cdr.(Retd.) A.R.W. Sayle, RD, RNR).
Submarine HMS H 44: HMS H 44 (Lt. R. Bannar-Martin, RN) conducted A/S exercises off Campbeltown with HMS Altair (Lt.Cdr.(Retd.) W.R.T. Clements, RNR) and HMS Radiant (T/Lt. C.S.R. Shapland, RNVR).
Submarine HMS H 50: HMS H 50 (Lt. G.S.C Clarabut, RN) conducted A/S exercises off Lough Foyle with HMS Bideford (Lt.Cdr. W.F. Hollins, RN) and HMCS Kenogami (T/Lt. J.L. Percy, RCNVR).
Submarine USS S-32: USS S-32 (Lt.Cdr. M.G. Schmidt) ended her 5th offensive war patrol at Dutch Harbour.
Submarine USS R-2: USS R-2 (Lt. A.K. Tyree, USN) conducted exercises off Key West.
Submarine USS R-4: USS R-4 (Lt.Cdr. P.W. Garnett, USN) conducted exercises off Key West.
Submarine USS R-9: USS R-9 departed New London, Connecticut for Bermuda.
Submarine USS R-11: USS R-11 (Lt. W.B. Parham, USN) conducted exercises off Key West.
Submarine USS R-20: USS R-20 (Lt. E.T. Shepard, USN) conducted exercises off Key West.
Submarine USSR M-105: M-105 fires two torpedoes at ' what is identified as ' a 7000 ton merchant off the Varangerfjord. Both torpedoes missed their target.
Submarine USSR S-33: S-33 torpedoed and sank the Romanian transport Suceava (6876 GRT) in the Black Sea in position 44°52'N, 31°22'E.
ASW Trawler HMS Foxtrot: HMS Stella Carina and HMS Foxtrot together pick up 61 survivors from the American merchant Michigan that was torpedoed and sunk by German U-boat U-565 about 60 nautical miles west of Oran, Algeria in position 35°59'N, 01°25'W.
ASW Trawler HMS Stella Carina: HMS Stella Carina and HMS Foxtrot together pick up 61 survivors from the American merchant Michigan that was torpedoed and sunk by German U-boat U-565 about 60 nautical miles west of Oran, Algeria in position 35°59'N, 01°25'W.
Destroyer Escort USS Menges: rescued 113 survivors from USS Lansdale.
Submarine HNMS O 10: HrMs O 10 (Lt.Cdr. A. van Altena, RNN(R)) participated in A/S exercises off Campbeltown with HMS Tuscarora (Lt.Cdr.(Retd.) H.T. Pitt, RN) and HMS Bretwalda (Skr. J.B. Henderson, RNR).
Submarine USS Seahorse: There is a claim that USS Seahorse (Lt.Cdr. S.D. Cutter) torpedoed and sank the Japanese submarine RO-45 (offsite link) off the Mariana Islands in position 15°19'N, 145°31'E. But according to the combinedfleet.com website this is not the case as RO-45 was active after this date.
Submarine HMS Proteus: HMS Proteus (T/Lt. P.S. Parmenter, RNR) conducted exercises in the Clyde area.
Submarine HMS Sceptre: HMS Sceptre (Lt. I.S. McIntosh, MBE, DSC, RN) departed Port HHZ for Holy Loch. She made the passage together with HMS Bonaventure (A/Capt.(Retd.) W.R. Fell, DSC, OBE, RN).
Submarine HMS Sea Rover: At 1805 hours (zone -6.5) HMS Sea Rover (Lt. J.P. Angell, RN) surfaced and opened fire on a goods train at Lhokseumawe, Sumatra. In about 15 minutes the train was wrecked with 59 shells.
Submarine HMS Seraph: HMS Seraph (Lt. T. Russell-Walling, RN) shifted from Portland to Plymouth. At Plymouth she conducted exercises.
Submarine HMS Surf: HMS Surf (Lt. D. Lambert, DSC, RN) ended her 6th war patrol (2nd in the Far East) at Trincomalee.
Submarine HMS Statesman: HMS Statesman (Lt. R.G.P. Bulkeley, RN) arrived at Lerwick. Later she departed for her 1st war patrol after only a short time in port. She was ordered to patrol in the Norwegian Sea on an anti-uboat patrol. For the daily positions of HMS Statesman during this patrol see the map below. HMS Statesman 1st war patrol click here for bigger map
Submarine HMS Taku: HMS Taku (Lt. A.J.W. Pitt, RN) departed Lerwick for Holy Loch. She was escorted by HMS Cutty Sark (A/Cdr. E.A. Stocker, DSC, RN). The next day, off Scapa Flow, they were joined by the Dutch submarine HrMs O 15 (Lt. J.B.M.J. Maas, RNN) and the British submarine HMS Visigoth (Lt. J.R.H. Haddow, DSC, RN).
Submarine HMS Unbending: HMS Unbending (Lt. J.D. Martin, DSC, RN) conducted exercises off Blyth with a training class of new submariners. Following these exercises HMS Unbending was docked at Blyth.
Submarine HMS Unbroken: HMS Unbroken (Lt. P.L. Langley-Smith, RN) conducted exercises off Blyth with a training class of new submariners.
Submarine HMS Unison: HMS Unison (T/Lt. P.C.S. Pritchard, RNR) conducted exercises off Blyth.
Submarine HMS United: HMS United (Lt. N.R. Wood, RN) conducted A/S exercises off Tobermory together with HMS Knaresborough Castle (Lt. J.R. Freeman, RNR), HMS Monnow (Cdr. E.G. Skinner, DSC, RD, RCNR), HMCS Teme (T/Lt.Cdr. D.G. Jeffrey, DSO, RCNR) and HMS Lapwing (Cdr.(Retd.) E.C. Hulton, RN).
Submarine HMS Unrivalled: HMS Unrivalled (Lt. D.S. Brown, RNVR) conducted post refit trials off Blyth.
Submarine HMS Varangian: During 20/21 April 1944, HMS Varangian (Lt. S.J. Fovargue, RN), conducted exercises off Fishguard with aircraft. These included night exercises.
Submarine HMS Upstart: HMS Upstart (Lt. P.C. Chapman, DSC and Bar, RN) departed Algiers for La Maddalena.
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) and HMNZS Arabis (Lt.Cdr. J.H. Seelye, RNZNVR).
Submarine HMS H 34: HMS H 34 (Lt. R.L. Jay, RN) conducted A/S exercises off Campbeltown with HMS Boarhound (A/Ch.Skr. A. Keable, RNR) and HMS Bedlington (Skr. A.W. Peak, RNR).
Submarine HMS H 44: HMS H 44 (Lt. P.N. Joyce, RN) participated in A/S exercises off Campbeltown.
Submarine HMS H 50: HMS H 50 (T/Lt. A.F. Wicker, RNVR) conducted A/S exercises off Lough Foyle with HMCS Dunver (Lt.Cdr. G.H. Stephen, OBE, DSC, RCNR), HMCS Dauphin (T/Lt. M.H. Wallace, RCNR), HMCS Rosthern (T/Lt. S.R.P. Annet, RCNVR) and HMCS Long Branch (T/A/Lt.Cdr. R.J.G. Johnson, RCNVR).
Submarine HMS P 511: HMS P 511 (Lt. E.A. Hobson, DSC, RN) participated in A/S exercises off Campbeltown.
Submarine USS R-4: USS R-4 (Lt.Cdr. W.L. Fey, Jr., USN) conducted exercises off Key West.
Submarine USS R-10: USS R-10 (Lt.Cdr. G.F. Sharp, USN) conducted exercises off Key West.
Submarine USS R-11: USS R-11 (Lt.Cdr. W.B. Parham, USN) conducted exercises off Key West.
Submarine USS R-14: USS R-14 (Lt.Cdr. R. Holden, USN) conducted exercises off Key West.
Submarine USS R-20: USS R-20 (Lt.Cdr. J.B. Dudley, USN) conducted exercises off Key West.
Submarine USS Piranha: USS Piranha conducted exercises off Key West.
Destroyer USS Compton: USS Compton departed from Ulithi to take part in the Okinawa campaign.
Destroyer USS Hugh W. Hadley: USS Hugh W. Hadley (Cdr. B.J. Mullaney) departed from Saipan to return to the Okinawa area.
Destroyer USS Thomas E. Fraser: USS Thomas E. Fraser departed from Saipan to return to the Okinawa area.
Light cruiser HNMS Tromp: HrMs Tromp (A/Capt. F. Stam, RNN) was undocked and immediately departed Colombo for Trincomalee.
Submarine HNMS Dolfijn: HrMs Dolfijn (Lt.Cdr. J.B.M.J. Maas, RNN) departed Dundee for Lerwick. She made the passage together with ORP Dzik (Lt. A. Klopotowski, ORP). They were escorted by HMS Ebor Abbey (T.Skr. G.H. Harwood, RNR).
Submarine USS Stingray: USS Stingray departed the Panama Canal Zone for New London, Connecticut.
Submarine USS Bream: USS Bream (Lt.Cdr. J.L. McCallum) departed from Fremantle for her 6th war patrol. Once again she was ordered to patrol in the Java Sea.
Submarine USS Raton: USS Raton (Cdr. M.W. Shea) departed from Pearl Harbor for her 7th war patrol. She was ordered to patrol in the Yellow Sea.
Submarine USS Bowfin: USS Bowfin (Cdr. A.K. Tyree, USN) conducted exercises off Guam together with USS Baron (Lt.Cdr. W.M. Dickerson, USNR), USS Greenlet (Lt.Cdr. J.T. Hodgson, Jr., USN) and USS Raby (Lt.Cdr. J.L. Slade, USNR).
Submarine USS Baya: USS Baya (Lt.Cdr. B.C. Jarvis, USN) departed from Subic Bay for her 4th war patrol. Once again she was ordered to patrol in the South China Sea along the French Indo-China coastline. Later she shifts her patrol area to the Java Sea. She, and USS Cavalla, were escorted out by USS George E. Davis. For daily and attack positions of USS Baya during this patrol see the map below.
Submarine USS Charr: USS Charr (Cdr. F.D. Boyle, USN) arrived at Subic Bay, Philippines to reload, replenish stores and make some minor repairs before resuming her patrol.
Submarine USS Carbonero: USS Carbonero (Cdr. C.L. Murphy, USN) conducted exercises in Panama Bay together with USS MacLeish (Lt. D.S. Cramer, USNR).
Submarine USS Guitarro: USS Guitarro (Lt.Cdr. T.B. Dabney) lays mines in Berhala Strait off northeast coast of Sumatra, Netherlands East Indies.
Submarine USS Icefish: USS Icefish (Cdr. R.W. Peterson) ended her 3rd war patrol at Guam.
Submarine USS Jallao: USS Jallao (Lt.Cdr. J.B. Icenhower) departed from Midway for her 3rd war patrol. She was ordered to patrol off Marcus Island and later in Japanese home waters.
Submarine USS Sea Devil: USS Sea Devil (Lt.Cdr. R.E. Styles) ended her 3rd war patrol at Midway.
Submarine USS Springer: USS Springer (Cdr. R. Kefauver) departed from Guam for her 2nd war patrol. She was ordered to patrol in the Yellow Sea.
Submarine HMS Turpin: HMS Turpin (A/Lt.Cdr. J.S. Stevens, DSO and Bar, DSC, RN) departed from Holy Loch for Plymouth. She is to undergo modifications at the Devonport Dockyard before her deployment to the Far East. Also defects had to be made good.
Submarine HMS Otway: HMS Otway (Lt. W.H. Kett, DSC, RN) conducted exercises of Blyth training a class of new submariners.
Submarine HMS Spiteful: HMS Spiteful (Lt.Cdr. F.H. Sherwood, DSC, RCNVR) arrived at Aden.
Submarine HMS Stubborn: HMS Stubborn (Lt. A.G. Davies, RN) arrived at Gibraltar.
Submarine HMS Subtle: HMS Subtle (Lt. B.J.B. Andrew, DSC, RN) was docked at Trincomalee.
Submarine HMS Trusty: HMS Trusty (Lt. W. St.G. Anderson, DSC, RNR) conducts exercises with HMS Carysfort (Lt.Cdr. L. St.G. Rich, DSO and Bar, RN), HMS Zambesi (Lt.Cdr. J.M. Palmer, RN) and ORP Garland (Lt. K. Hess).
Submarine HMS Tantivy: HMS Tantivy (Lt. P.S. May, RN) arrived at Sheerness.
Submarine HMS Tradewind: HMS Tradewind (Lt. J. Nash, DSC, RN) sank a lugger and two tonkangs with gunfire in the Gulf of Siam in position 10°58'N, 99°40'E. (All times are zone -9) 0653 hours - Sighted two junks bearing 140°. 0726 hours - Dived in position 11°00'N. 99°41'E and closed the junks. They were soon seen to be two tonkangs of above average size, they were Northbound. 0810 hours - Sighted a small motor lugger towing a lighter bearing 230°. Decided to surface, sink the tonkangs and the lugger and to take some prisoners. 0818 hours - When all three vessels were close together bearing 270°, 600 yards surfaced in position 10°58'N, 99°40'E and opened fire on the lugger. After firing three rounds, for two hits, fire was shifted to the tonkangs. After two rounds against the tonkangs the lugger was seen to have slipped its tow and making off. Fire was now reopened on the lugger. After three rounds it was seen to be totally disabled. Now six more rounds were fired at the tonkangs. Both were severely damaged and were left in a sinking condition.
Submarine HMS Upright: HMS Upright (Lt. J.A.L. Wilkinson, RN) conducted A/S exercises off Bermuda with HMCS Cape Breton (Lt. J.C.L. Annesley, RCN).
Submarine HMS Umbra: HMS Umbra (T/Lt. H.C. Parker, DSC, RNVR) conducted exercises off Portsmouth.
Submarine HMS Ultor: HMS Ultor (Lt. J.P. Harvey, RN) participated in A/S exercises off Tobermory.
Submarine HMS Unshaken: HMS Unshaken (Lt. J.S. Pearce, RNR) participated in A/S exercises off Newhaven.
Submarine HMS Universal: HMS Universal (Lt. S.S. Brooks, DSC, RN) conducted A/S exercises off Loch Alsh with HMS Monsterrat (A/Lt.Cdr. F.A.J. Downer, DSC, RNR) and later with ships from E.G. (Escort Group) 23.
Submarine HMS Unswerving: HMS Unswerving (T/Lt. M.D. Tattersall, RNVR) departed Gibraltar for Portsmouth. She made the passage in convoy MKS 96.
Submarine HMS H 34: HMS H 34 (Lt. A.M.B. Buxton, RN) conducted A/S exercises off Campbeltown with HMS Spaniel (T/Skr. J. Bruce, RNR) and HMS Bedlington (A/Ch.Skr. A.W. Peak, RNR).
Submarine HMS H 50: HMS H 50 (T/Lt. G.P. Christie, DSC, RNR) conducted special trials in the Clyde area.
Submarine USS R-1: USS R-1 (Lt. W.A. Schoenfeld, USN) conducted A/S exercises off Casco Bay, Maine together with USS Selfridge (Lt.Cdr. J.A. Boyd, USN), USS Knoxville (Lt.Cdr. G.R. Reynolds, USCGR) and USS Brunswick (Lt.Cdr. B.B. Sherry, USCGR).
Submarine USS R-2: USS R-2 (Lt.Cdr. L.G. Bernard, USN) conducted exercises off Key West.
Submarine USS R-10: USS R-10 (Lt. R.D. McWenthy, USN) conducted exercises off Key West.
Submarine USS R-14: USS R-14 (Lt.Cdr. J.H. Cunningham, Jr., USNR) conducted exercises off Key West.
Submarine USS Runner (ii): USS Runner (ii) (Cdr. R.H. Bass, USN) departed Key West, Florida for the Panama Canal Zone.
Submarine USS Argonaut (ii): USS Argonaut (ii) conducted exercises off Key West.
Sloop HMS Amethyst: The frigate, HMS Amethyst, steamed up the Yangtze River to relieve the guard ship HMS Consort at Nanking, prepared to evacuate British and Commonwealth citizens caught up in the advance of the Chinese Communist Forces. At about 0830 hours, Amethyst came under fire from Communist shore batteries positioned on the north shore of the river opposite Low Island. HMS Amethyst steamed on and was attacked again by batteries around Xou An Reach and Rose Island where she took three direct hits. Amethyst was hit again by two shells that struck the bridge wounding Amethyst's Commanding officer, Lieutenant Commander Bernard Skinner. Skinner died from his injuries a day later and he was posthumously mentioned in dispatches. In the confusion that followed, the ship ran aground off Rose Island. The ship managed to send off a signal to all ships in the area, ?Under heavy fire, am aground, large number of casualties". Another shell wrecked the power room below decks disabling the gyrocompass, radio, and electrically controlled firing circuits were out of action. Another direct hit killed the gun crew on the foc'sle. An attempt was made to evacuate the wounded ashore in a damaged sea boat, but the boat was hit killing two men. The surgeon and his assistant administered to the wounded on the quarterdeck when a shell killed both of them. Amethyst was now a helpless target. Some of the ship's company were ordered to swim ashore to Rose Island. Remaining on board were about 40 unwounded men, 12 wounded, and 15 dead. The shelling had stopped but no one could move without drawing the attention of snipers. HMS Amethyst had received over 50 hits and holes below the waterline were plugged with hammocks and bedding. During this time HMS Consort was sighted, flying 7 White Ensigns and 3 Union Jack flags, steaming down from Nanking at an incredible 29 Knots. Consort came under fire from the shore batteries but her 4.5-inch guns managed to knock out the enemy shore batteries and she attempted to take Amethyst in tow. HMS Consort turned about with all guns blazing at the north bank batteries, destroying an enemy position. As she steamed up river for the second time she was fired on by a concentrated number of 37mm anti-tank guns. The bridge and wheelhouse were hit with both 'A' and 'B' guns being put out of action and she transferred to emergency steering. Consort came about again under heavy fire and steamed away down river. She had taken 56 hits and lost 9 killed and 30 wounded. Of the 60 seamen who made it ashore from Amethyst, 10 later made it back to the ship later, and 50 eventually reached Shanghai. Every effort was made to free Amethyst from the mud but to no avail. On the 26th of April, after being aground for six days and in the dead of night, a second attempt to free the Amethyst from the mud was successful after she had been lightened forward. She then proceeded to move up river and anchored off Fu Te Wei. Later that day a signal was received: "HM ships London and Black Swan are moving up river to escort the Amethyst downstream. Be ready to move." But concentrated fire from batteries near Bate Point hit both ships; HMS London was holed 12 times on the port side and lost 12 killed and 20 wounded. HMS Black Swan had 7 wounded. Reluctantly the order was given for both ships to return down river. During the course of the day an RAF Sunderland Flying boat arrived with medical supplies and an RAF doctor but shortly after landing a salvo of shells hit the water 100 yards from the aircraft and it was forced to take off again after disembarking supplies and the doctor. The worst of Amethyst's wounded were taken off by sampan. The Amethyst anchored 10 miles further upstream and the Sunderland flying boat circled the ship but was unable to land due to heavy fire. At anchor off Tan Cha Ten a boat arrived with the British Naval Attach? Lt. Cdr. J. S. Kerans who took command of the Amethyst and started negotiations with the Communist authorities. Months of fruitless negotiations went by and the Peoples Liberation Army occupied the whole area. Vital supplies were withheld as the Chinese insisted that Lt. Cdr. Kerans sign a statement that the Amethyst had wrongly invaded Chinese national waters and had fired upon them first. Finally Lt.Cdr. Kerans decided to make a break for open waters. On July 31st under cover of darkness, Amethyst slipped her cable and proceeded downstream to begin a 104-mile dash for freedom running the gauntlet of Communist guns on both banks of the river. 0055 hours Amethyst came under heavy fire off Kiang Yin but putting down thick black smoke she confused the Communist gunners on the shore. At 0500 hours she approached the forts at Woosung and Par Shan with their searchlights sweeping the river. The Amethyst, at full speed ahead, broke through the boom at the mouth of the river and made contact with HMS Concord and sent the time-honoured signal. "Have rejoined the fleet off Woosung...God save the King."