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 (47)
1927: Submarine Actéon
1933: Submarine M-19
1937: Battleship Anson (79)
1942: Landing Craft Tank LCT 576 (LCT 576) - Motor Gun Boat MGB 185 (MGB 185) - Icebreaker Southwind (WAGB 280) - Tank landing ship LST 1 (LST 1) - Tank landing ship LST 451 (LST 451) - Tank landing ship LST 452 (LST 452) - Tank landing ship LST 6 (LST 6) - Destroyer Escort Moore (DE 240) - Destroyer Prichett (DD 561) - Motor torpedo boat PT 209 - Submarine Ray (271) - Minesweeper YMS-272 (YMS-272) - Minesweeper YMS-320 (YMS-320)
1943: Corvette Asbestos (K 358) - Corvette Hawkesbury (K 415) - Frigate Prestonian (K 662) - Frigate Sea Cliff (K 344) - Frigate Albuquerque (PF-7) - Tank landing ship LST 46 (LST 46) - Escort carrier Nehenta Bay (CVE 74) - Motor torpedo boat PT 456 - Motor torpedo boat PT 562 - Minesweeper YMS-453 (YMS-453)
1944: Tank landing ship LST 3009 (LST 3009) - Salvage vessel Bolster (ARS 38) - Landing Craft Infantry LCI(L)-711 (LCI(L)-711) - Landing Craft Infantry LCI(L)-799 (LCI(L)-799) - Landing craft tank LCT 1122 (LCT 1122) - Landing craft tank LCT 1201 (LCT 1201) - Landing craft tank LCT 1256 (LCT 1256) - Landing craft tank LCT 1331 (LCT 1331) - Medium landing ship LSM 176 (LSM 176) - Medium landing ship LSM 177 (LSM 177) - Medium landing ship LSM 334 (LSM 334) - Tank landing ship LST 650 (LST 650) - Tank landing ship LST 724 (LST 724)
1917: MS Trawler Concertator (FY 637)
1930: MS Whaler Globe V (FY 877)
1943: Landing Craft Tank LCT 768 (LCT 768) - Motor minesweeper MMS 1030 (FY 1030) - Motor minesweeper MMS 282 (J 782) - Motor minesweeper MMS 305 (J 805) - Submarine Spirit (P 245) - Submarine Vampire (P 72) - Landing Craft Infantry LCI(L)-441 (LCI(L)-441) - Tank landing ship LST 218 (LST 218) - Escort carrier Natoma Bay (CVE 62) - Patrol craft PCS-1425 (PCS-1425) - Submarine rescue vessel Penguin (ASR 12) - Motor torpedo boat PT 375 - Frigate Sausalito (PF-4)
1944: Destroyer Cresent (R 16) - Minesweeper Jewel (J 390) - Landing Craft Tank LCT 1157 (LCT 1157) - Corvette Oakham Castle (K 530) - Boom defence vessel Precise (Z 285) - Submarine Vengeful (P 86) - Escort carrier Gilbert Islands (CVE 107) - Landing Craft Infantry LCI(L)-1079 (LCI(L)-1079) - Landing Craft Infantry LCI(L)-656 (LCI(L)-656) - Landing Craft Infantry LCI(L)-709 (LCI(L)-709) - Landing craft support LCS(L)-49 (LCS(L)-49) - Landing craft tank LCT 1101 (LCT 1101) - Landing craft tank LCT 1130 (LCT 1130) - Landing craft tank LCT 1194 (LCT 1194) - Landing craft tank LCT 1326 (LCT 1326) - Medium landing ship LSM 320 (LSM 320) - Tank landing ship LST 715 (LST 715) - Submarine Tigrone (419) - Minesweeper YMS-444 (YMS-444)
1945: Fleet tug Salinan (ATF 161)
1918: Destroyer Talbot (DD 114)
1929: Submarine Humaita (H)
1931: Submarine O 12
1934: Large destroyer Chevalier Paul
1940: Motor Anti-Submarine Boat MA/SB 49 (MA/SB 49)
1941: Destroyer Lively (G 40)
1943: Escort Carrier Ameer (D 01) - Harbour Defence Motor Launch HDML 1294 (ML 1294) - Harbour Defence Motor Launch HDML 1364 (ML 1364) - Tank landing ship LST 215 (LST 215) - Motor Torpedo Boat MTB 681 (MTB 681) - Harbour Defence Motor Launch HDML 1199 (ML 1199) - Destroyer Escort Burke (DE 215) - Motor torpedo boat PT 360 - Destroyer Escort Scott (DE 214) - Minesweeper Sway (AM 120) - Minesweeper YMS-219 (YMS-219) - Minesweeper YMS-235 (YMS-235) - Minesweeper YMS-403 (YMS-403)
1944: Landing Craft Tank LCT 867 (LCT 867) - Destroyer Whirlwind (ii) (R 87) - Destroyer Zest (R 02) - Landing Craft Infantry LCI(L)-1078 (LCI(L)-1078) - Landing Craft Infantry LCI(L)-707 (LCI(L)-707) - Medium landing ship LSM 38 (LSM 38) - Tank landing ship LST 627 (LST 627) - Tank landing ship LST 776 (LST 776) - Tank landing ship LST 926 (LST 926) - Minesweeper YMS-479 (YMS-479)
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 July (7)
1940: Destroyer Brazen (H 80)
1943: Motor torpedo boat PT 166
More information on Allied Warships losses.
General Events on 20 July
Submarine HNMS O 9: HrMs O 9 (Lt. H.A.W. Goossens, RNN) departed Rothesay for Tobermory. She made the passage together with HMS Alecto (Cdr. R.M.G. Gambier, RN).
Submarine HMS Oswald: HMS Oswald (Lt.Cdr. D.A. Fraser, RN) departed Alexandria for her 3rd war patrol. She was ordered to patrol off the east coast of Sicily.
Submarine HMS Parthian: At 0130 HMS Parthian (Lt.Cdr. R.D. Cayley, RN) landed an agent (M. Spentidakis, code name SPHINX) on Crete at Gromeno Bay. The agent was to contact General Mantakas (an opponent of the dictator Metaxas) who was to organise an uprising should the Greek government sides with the Italians. He was arrested within a week but the British government applied pressure and obtained his release.
Submarine HMS Regulus (i): HMS Regulus (Cdr. J.M. Money, RN) arrived at Aden.
Submarine HMS Narwhal: HMS Narwhal (Lt.Cdr. R.J. Burch, DSO, RN) departed Blyth for Immingham to embark a full outfit of mines. Narwhal arrived at Immingham later the same day.
Submarine HMS Swordfish: HMS Swordfish (Lt. P.J. Cowell, RN) was undocked.
Submarine HMS Snapper: HMS Snapper (Lt. W.D.A. King, DSO, RN) departed Rosyth for her 11th war patrol. She was ordered to patrol off Stavanger, Norway.
Submarine HMS Triton: HMS Triton (Lt.Cdr. E.F. Pizey, RN) departed from Rosyth for her 12th war patrol. She was ordered to patrol off the South-West coast of Norway near Bergen. For the daily and attack positions of HMS Triton during this patrol see the map below. Ver HMS Triton 12th war patrol click here for bigger map
Submarine HNMS O 9: HrMs O 9 (Lt. H.A.W. Goossens, RNN) participated in A/S exercises off Campbeltown together with HMS Boarhound (Skr. S.G. Jinks, RNR) and HMS Valena (Lt.Cdr. A.F.C. Gray, RNR).
Submarine HMS Otus: HMS Otus (Lt. R.M. Favell, RN) arrived at Malta.
Submarine HMS Perseus (i): HMS Perseus (Lt.Cdr. P.J.H. Bartlett, RN) departed Alexandria for her 9th war patrol (4th in the Mediterranean). She was ordered to perform operation ME 2 together with HMS Regent (Lt. W.N.R. Knox, DSC, RN). The submarine were to carry out a W/T diversion when off the South-West coast of Crete. Upon completion of this operation Perseus was to return to Alexandria after a short patrol along the North coast of Crete. For the daily positions of HMS Perseus during this patrol see the map below. HMS Perseus 9th war patrol click here for bigger map
Submarine HMS Regent: HMS Regent (Lt. W.N.R. Knox, DSC, RN) departed Alexandria for her 13th war patrol (10th in the Mediterranean). She was ordered to perform operation ME 2 together with HMS Persues (Lt.Cdr. P.J.H. Bartlett, RN). The submarine were to carry out a W/T diversion when off the South-West coast of Crete. Upon completion of this operation Regent was to patrol in the Gulf of Sirte.
Submarine HMS Tetrarch: HMS Tetrarch (Lt.Cdr. G.H. Greenway, RN) attacks an enemy convoy off Thermia. When about to open fire one of the escorts came straight towards Tetrarch. The initial attack failed but one torpedo was fired at the other ship of the convoy. This torpedo however missed the target. (All times are zone -3) 0928 hours - While in position 360° - Cape Kephalos - 1.7 nautical miles (Approximately 37°31'N, 24°26'E), sighted a convoy coming North through the Thermia Channel. This convoy consisted of two 5000 tons vessels escorted by one armed merchant cruiser, two destroyers, three MAS-boats and two aircraft. Started attack on the port ship of the convoy. When about to open fire the AMC was seen to come straight towards. She passed over Tetrarch's stern but did not drop depth charges. The attack on the port ship of the convoy however now had failed. Now one torpedo was fired at the starboard ship from 4000 yards but it missed it's target. 1015 to 1046 hours - 16 Depth charges were dropped but none was close and no damage to Tetrarch was done. [This torpedo however missed the target. This was probably the Cuneo convoy which consisted of Citta di Trapani (2467 GRT, built 1929), Citta di Agrigento (2480 GRT, built 1930) escorted by the armed merchant cruiser Brioni (1987 GRT, built 1931), the torpedo-boats Libra and Lince and MAS 535 and MAS 539 on passage from Piraeus (they had sailed at 0500/20) to Syra.]
Submarine HMS Union: HMS Union (Lt. R.M. Galloway, RN) was sunk by the Italian torpedo boat Circe during an attack on the damaged German merchant vessel Menes (5609 GRT, built 1926). Menes was in tow of the Italian tug Ciclope and and the German tug Max Berendt and had departed Tripoli on the 17th. Menes had been torpedoed and damaged by HMS Regent (Lt.Cdr. H.C. Browne, RN) on 21 February 1941.
Submarine HMS Unique: HMS Unique (Lt. A.F. Collett, RN) departed Malta for her 12th war patrol (10th in the Mediterranean). She was ordered to patrol South of the Strait of Messina. For the daily positions of HMS Unique during this patrol see the map below. HMS Unique 12th war patrol click here for bigger map
Submarine HMS Upright: HMS Upright (Lt. J.S. Wraith, DSC, RN) departed Malta for her 14th war patrol (12th in the Mediterranean). She was ordered to patrol between Capo Dell Armi and Capo Spartivento off the South coast of Calabria, Italy to give cover for convoy operation Substance. For the daily and attack positions of HMS Upright during this patrol see the map below. HMS Upright 14th war patrol click here for bigger map
Submarine HMS Utmost: At 2305 hours, HMS Utmost (Lt.Cdr. R.D. Cayley, RN), sighted a 6000 tons merchant vessel bearing 50 degrees, at a distance of five miles in position 38°26'N, 12°48'E, The ship was zig-zagging on a mean course of 260°. The submarine closed at high speed and, at 2325 hours, fired two torpedoes from a range of 3000 yards. Both missed. The target has not been identified for certain but may have been the Italian Ettore (4270 GRT, built 1912) who had sailed at 1830 hours from Palermo for Algiers.
Submarine HMS Uproar: HMS P 31 (Lt. J.B.de B. Kershaw, RN) departed Lerwick for Dundee. She was escorted by HMS Preston North End (Lt. K.A. Vasey, RNR).
Destroyer HMS Ilex: After temporary repairs, HMS Ilex (Lt. G.R.P. Goodden, RN) departed Port Said for Aden. She was to proceed to Simonstown, South Africa where the damage was to be investigated before it would be decided where repairs were te be effected. It had at first been intended that she was to be sent to India for repairs but she could not be accepted there.
Corvette HMCS Weyburn: HMCS Weyburn (T/A/Lt.Cdr. T.M.W. Golby, RCNR) picks up 42 men from the British merchant Frederika Lensen that was torpedoed and heavy damaged by German U-boat U-132 in the Gulf of St.Lawrence near Anticosti Island in position 49°22'N, 65°12'W.
Light cruiser HNMS Tromp: HrMs Tromp (Cdr. J.B. de Meester, RNN) departed Fremantle for Albany.
Submarine HNMS K XV: HrMs K XV (Lt.Cdr. Baron C.W.T. van Boetzelaer, RNN) departed Bombay for Colombo. She made the passage together with HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) and HrMs Colombia (Capt. J.L.K. Hoeke, RNN). For the daily positions of HrMs K XV during this passage see the map below. HrMs K XV passage Bombay - Colombo click here for bigger map
Submarine HNMS O 19: O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Bombay for Colombo. She made the passage together with HrMs K XV (Lt.Cdr. Baron C.W.T. van Boetzelaer, RNN) and HrMs Colombia (Capt. J.L.K. Hoeke, RNN).
Submarine HNMS O 24: At 2355 hours, off Bishops Rock, HrMs O 24 (Lt. W.J. de Vries, RNN) left her escort, the British armed yacht HMS White Bear (Cdr. (retired) C.C. Flemming, RN), and proceeded to Gibraltar.
Submarine HNMS O 10: HrMs O 10 (Lt. Baron D.T. Mackay, RNN) participated in A/S exercises off Ardishaig with ML's.
Submarine HMS Sturgeon: HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN) departed Lerwick for Holy Loch together with HMS Trident (Lt. A.R. Hezlet, DSC, RN). They were escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR).
Submarine HMS Trident: HMS Trident (Lt. A.R. Hezlet, DSC, RN) departed from Lerwick bound for Holy Loch. She made the passage together with HMS Sturgeon (Lt.Cdr. M.R.G. Wingfield, RN). They were escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR).
Submarine HMS Unbroken: HMS P 42 (Lt. A.C.G. Mars, RN) arrived at Malta.
Submarine USS S-20: USS S-20 departed New London, Connecticut for Casco Bay, Maine.
Submarine USS S-46: USS S-46 (Lt. R.C. Lynch, Jr.) departed from Brisbane for her 2nd war patrol. She was ordered to patrol in the Solomons.
Submarine USS R-1: USS R-1 (Lt. W.R. Laughon, USN) ended her war patrol at New London, Connecticut. At New London she underwent an overhaul.
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.Cdr. B.E. Lewellen, USN) conducted exercises off Key West.
Submarine USS R-12: USS R-12 (Lt. E.E. Shelby, USN) participated in A/S exercises of Guantanamo Bay together with USS Mervine (Lt.Cdr. S.D. Willingham, USN) and USS Meade (Lt.Cdr. R.S. Lamb, USN).
Submarine USS R-13: USS R-13 (Lt. A.R. Gallaher, 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 ShCh-303: ShCh-303 torpedoed and damaged the German merchant Aldebaran (7891 GRT) south of Uto, Finland in position 59°45'N, 21°24'E.
Destroyer ORP Piorun: Piorun arrived at Argentia, Canada.
Battleship USS Iowa: USS Iowa (Capt. J.L. McCrea, USN) shifted from Casco Bay to the Boston Navy Yard.
Submarine HNMS O 21: HrMs O 21 (Lt.Cdr. J.F. van Dulm, RNN) arrived at Exmouth Gulf, Australia.
Submarine HNMS O 24: HrMs O 24 (Lt.Cdr. W.J. de Vries, RNN) conducted exercises off Colombo.
Submarine HNMS O 9: HrMs O 9 (Lt. J.B.M.J. Maas, RNN) participated in A/S exercises off Campbeltown with HMS Bretwalda (Skr.Lt. J.R. Coultas, RD, 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 HNMS Dolfijn: HrMs Dolfijn (Lt.Cdr. H.M.L.F.E. van Oostrom Soede, RNN) ended her 9th war patrol (7th in the Mediterranean) at Algiers.
Submarine USS Tambor: USS Tambor (Lt.Cdr. R. Kefauver) left Fremantle for her 8th war patrol. She was ordered to return to the United States after this patrol.
Submarine USS Trout: USS Trout (Lt.Cdr. A.H. Clark) ended her 9th war patrol at Fremantle.
Submarine USS Seadragon: USS Seadragon (Cdr. R.L. Rutter, USN) topped off with fuel at Johnston Island before proceeding towards her patrol area.
Submarine USS Pollack: USS Pollack (Lt.Cdr. B.E. Lewellen) leaves Pearl Harbor for her 8th war patrol. She was ordered to patrol in Japanese home waters off the east coast of Kyushu.
Submarine USS Pompano: USS Pompano (Lt.Cdr. W.M. Thomas) torpedoed and damaged the Japanese transport ship Uyo Maru (6376 GRT) east of Miki Zaki, Honshu, Japan in position 33°55'N, 136°26'E.
Submarine USS Paddle: USS Paddle (Lt.Cdr. R.H. Rice) departed from Pearl Harbor for her 1st war patrol. She was ordered to patrol south of Japan.
Submarine HMS Osiris: HMS Osiris (Lt. A.G. Chandler, RNR) departed Beirut for Port Said.
Submarine HMS Safari: HMS Safari (Lt. R.B. Lakin, DSO, DSC, RN) torpedoed and sank the Italian pilot vessel / armed yacht F 50/Silvia Onorato (208 GRT, built 1895) between Bastia and La Maddalena carrying 180 tons of cement. (All times are zone -1) 1615 hours - Sighted a large A/S steam yacht (similar to HMS Breda). She was southbound and just passing Aciago Point. The target was of about 1000 tons, armed with depth charges, a 3.9" gun amidships and a 20mm gun forward. Enemy course was 198°, speed 6.5 knots. Range was 6500 yards, closed to attack. 1640 hours - In position 41°46'N, 09°26'E fired 2 torpedoes from 50 yards. Both hit, the ship disintegrated and depth charges exploded as she sank. As the range had been overestimated had to take avoiding action to prevent a collision with everything that remained so went hard-a-starboard. The ships mainmast passed about 25 feet clear on the port side. 2 Survivors were seen Climbing on a large float and paddle for the shore. Of her crew of fifteen, 13 survived including two wounded, two were missing.
Submarine HMS Sceptre: HMS Sceptre (Lt. I.S. McIntosh, MBE, DSC, RN) arrived at Lerwick. She departed later the same day for her 1st war patrol. She was ordered to patrol in the Norwegian Sea on an Anti-Submarine patrol. For the daily positions of HMS Sceptre during this patrol see the map below. HMS Sceptre 1st war patrol click here for bigger map
Submarine HMS Sea Nymph: At 1300 hours HMS Sea Nymph (Lt. J.P.H. Oakley, DSC, RN) made rendez-vous with her escort, HMS White Bear (Cdr. J.F. Drake, RNR), off the Scilly Islands.
Submarine HMS Sportsman: HMS Sportsman (Lt. R. Gatehouse, DSC, RN) conducted A/S exercises off Algiers with HMS Jervis (Capt. J.S. Crawford, DSO, RN), HMS Paladin (Lt. E.A.S. Bailey DSC, MBE, RN), HMS Pathfinder (Cdr. E.A. Gibbs, DSO and 3 Bars, RN), HMS Penn (Lt.Cdr. J.H. Swain, DSO, RN), HMS Panther (Lt.Cdr. R.W. Jocelyn, RN) and HMS Arrow (Lt.Cdr. W.W. Fitzroy, RN).
Submarine HMS Syrtis: HMS Syrtis (Lt M.H. Jupp, DSC, RN) ended her 1st war patrol at Lerwick. She departed later the same day for Holy Loch escorted by HMS Cutty Sark (Cdr.(retired) R.H. Mack, RN).
Submarine HMS Tantalus: HMS Tantalus (Lt.Cdr. H.S. Mackenzie, DSO and Bar, RN) is undocked.
Submarine HMS Ultor: HMS Ultor (Lt. G.E. Hunt, DSC, RN) arrived at Bizerta.
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. W.L. Fey, Jr., USN) conducted exercises off Key West.
Submarine USS R-10: USS R-10 (Lt.Cdr. E.D`H. Haskins, 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 USSR ShCh-403: While on patrol of the Kongsfjord, ShCh-403 makes a torpedo attack on a German convoy. Four torpedoes were fired against ' what is identified as ' a merchant of 6000 GRT. All torpedoes fired missed their target.
Frigate HMCS Matane: Bay of Biscay, South of Brest Peninsula. HMCS Matane was struck by a glider bomb, launched by a Dornier 217. The ship was rendered dead in the water. There were three fatalities and a number of injuries attributable to the attack. Matane was towed into Plymouth by HMCS Monnow, and after major repairs returned to service.
Battleship USS Iowa: USS Iowa (Capt. J.L. McCrea, USN) anchored off Saipan Island and fuelled the destroyers USS Caperton (Cdr. W.J. Miller, USN) and USS Cogswell (Cdr. H.T. Deutermann, USN). She got underway again later the same day.
Submarine HNMS O 9: HrMs O 9 (Lt. R.W. van Lynden, RNN) participated in A/S exercises off Campbeltown with HMS Tuscarora (Lt.Cdr. (retired) H.T. Pitt, RN) and HMS L' Atlantique (Skr. C.A. Collins, RNR).
Submarine USS Cobia: USS Cobia (Lt.Cdr. A.L. Becker) sank the Japanese auxiliary submarine chasers Yusen Maru No.3 (193 GRT) and Kaio Maru No.2 (62 GRT) north-west of Ogasawara-Gunto in position 28°06'N, 141°32'E.
Submarine USS Bowfin: USS Bowfin (Cdr. J. Corbus, USN) made a short stop at Midway to top off with fuel before proceeding for her patrol area later the same day.
Submarine USS Aspro: USS Aspro (Cdr. W.A. Stevenson, USN) attacked an escorted Japanese transport ship north of Taliabu Island, Netherlands East Indies in position 01°34'S, 124°51'E. No hits were obtained. Following the attack Aspro was depth charged but sustained no damage. (All times are zone -8) 0953 hours - Heard pinging bearing 240°. Position was 01°34'S, 124°51'E. 0956 hours - Sighted black smoke on the same bearing as the pinging. Started approach. The contact was close inshore. 1022 hours - Sighted masts. 1106 hours - The contact was now seen to be a medium seized freighter with two escorts, one ahead and one astern of the freighter. They were zigging every five minutes. 1127 hours - Fired four bow torpedoes at the freighter from 1350 yards. Due to an error in drill the setup of the attack was incorrect. 1129 hours - Lt.Cdr. Stevenson saw, though surprised, that the target was obscured by smoke and spray. No hit had been heard but it seems likely that the target was damaged. An escort was seen coming towards at speed. Went to 450 feet. 1131 hours - Depth charging started when Aspro was passing 375 feet. The initial pattern was 8 depth charges. 1132 hours - 3 more depth charges were dropped. 1137 hours - 5 depth charges were dropped. 1141 hours - 4 depth charges were dropped. 1147 hours - 7 depth charges were dropped. 1149 hours - A single depth charge was dropped. 1150 hours - A single depth charge was dropped. 1151 hours - A single depth charge was dropped. 1152 hours - A single depth charge was dropped. All depth charges were close but above Aspro. No damage was sustained by her. Aspro was underneath a gradiant at 450 feet and the escort was pinging in vain. When Aspro returned to periscope depth th escort that had been astern was seen about 4000 yards off keeping a listening watch. The target and the other escort were seen to clear the area close inshore.
Submarine HMS Surf: HMS Surf (Lt. D. Lambert, DSC, RN) was undocked.
Submarine HMS Unbending: HMS Unbending (Lt. J. Whitton, DSC, RN) conducted exercises off Blyth.
Submarine HMS Untamed: HMS Vitality (Lt. K.S. Renshaw, DSC, RNR) arrived at Holy Loch to begin a period of trials and training.
Submarine HMS Unswerving: HMS Unswerving (T/Lt. M.D. Tattersall, RNVR) fires three torpedoes at the German transport KT 18 / Pelikan (834 GRT, built 1944) and it's escort the German torpedo-boat TA 19 off Suda Bay, Crete. All torpedoes missed. (All times are zone -2) 0400 hours - Dived in position 35°37'N, 24°15'E. 0422 hours - In position 35°37'5"N, 24°14'E sighted a KT transport ship escorted by a destroyer / torpedo-boat. Started attack. 0449 hours - Fired three torpedoes from 3200 yards. 0452 hours - Went to 200 feet. 0457/0458 hours - Heard three explosions, these are thought to be end of run explosions. 0500 hours - The escort dropped three depth charges but these were not close. 0532 hours - Returned to periscope depth. Nothing in sight.
Submarine HNoMS Ula: HNoMS Ula (Lt.Cdr. R.M. Sars) departed Lerwick for her 12th war patrol. She was ordered to perform an anti U-boat patrol in the Norwegian Sea. For the daily positions of HNoMS Ula during this patrol see the map below.
Submarine USS R-1: USS R-1 (Lt. W.A. Schoenfeld, USN) conducted exercises off Bermuda.
Submarine USS R-2: USS R-2 (Lt.Cdr. L.G. Bernard, USN) conducted exercises off Key West.
Submarine USS R-4: USS R-4 (Lt. D.C. Peto, 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-13: USS R-13 (Lt.Cdr. D.L. Mehlop, 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 USSR ShCh-209: At 1508hours ShCh-209 sank the Turkish sailing vessel Semsi Bahri (26 GRT) with gunfire north-west of the Bosporus in position 41°43'N, 28°45'E.
Submarine chaser BZ Javarí: At 04.54 hours on 20 July 1944 German U-boat U-861 torpedoed the Brazilian troop transport Vital de Oliveria which sank within 6 minutes about 25 miles south of S?o Tom? lighthouse in position 22°29'S, 41°09'W. Her sole escort Javar? (CS 51) was missed by a torpedo and initially searched for the attacker but then rescued the commander and other survivors (175 in all) together with the Brazilian fishing vessel Guanabara.
Battleship USS Iowa: USS Iowa (Capt. J.L. Holloway, Jr., USN) received ammunition from the ammunition ship USS Shasta (Lt.Cdr. W.M.H.St. George, USNR).
Light cruiser HNMS Tromp: HrMs Tromp (A/Capt. F. Stam, RNN) arrived at Seeadler Harbour, Manus.
Submarine HNMS O 24: HrMs O 24 (Lt.Cdr. P.J.S. de Jong, RNN) ended her 24th war patrol (12th in the Far East and 2nd for this deployment) at Fremantle.
Submarine HNMS Zwaardvisch: HrMs Zwaardvisch (Lt. J. van Dapperen, RNN) departed from Port Said bound for Gibraltar.
Submarine HNMS Dolfijn: HrMs Dolfijn (Lt.Cdr. J.B.M.J. Maas, RNN) conducted exercises off Dundee.
Submarine USS Seadragon: USS Seadragon (Lt.Cdr. L.L. Davis, Jr., USN) arrived at Key West, Florida from Guantanamo Bay, Cuba.
Submarine USS Hake: With her overhaul completed USS Hake (Cdr. F.E. Haylor) departed for her 9th war patrol. She was ordered to patrol of Honshu, Japan.
Submarine USS Barbero: USS Barbero (Lt.Cdr. R.F. DuBois, USN) arrived Cristobal, Panama Canal Zone from New London, Connecticut.
Submarine USS Baya: USS Baya (Lt.Cdr. B.C. Jarvis, USN) attacked a Japanese patrol vessel with gunfire together with USS Blenny to the north-west of Surabaya. Baya obtained no hits and the action was broken off after about 40 minutes. (All times are zone I, -9) 0021 hours - In position 06°10'S, 114°44'E obtained SJ radar contact bearing 285°(T), range 13300 yards. Commenced tracking. Sent contact reports to other submarine in the vicinity. The target was identified as a small patrol vessel. 0030 hours - Manned battle stations. The target was tracking on a nearly steady course of 090°(T) at 11 knots. It was decided to make a submerged approach using a salvo of torpedoes set at 2 feet. 0050 hours - Broke off the attack as the Torpedo Data Computer had broken down as well as other fire control equipment. 0150 hours - The target suddenly reversed course to 270°(T). Commenced an end around at full speed. 0240 hours - Having gained a position due north of the target the patrol vessel suddenly changed course to 130°(T) and commenced tremendous constant helm zigs of about 90° either side of the main course. He is apparently patrolling. This new base course is taking him directly towards Surabaya. The target is now echo ranging occasionaly. 0330 hours - The TDC is now back in commission but due to the targets enormous zigs Baya was unable to attack. 0545 hours - Made rendezvous with USS Blenny. It was decided to make a coordinated gun attack on the patrol vessel at dawn. One submarine attacking from the north-west the other from the south-west. 0705 hours - Manned battle stations. 0721 hours - Received 'execute' from Blenny. Commenced firing from 8000 yards with both 5" guns. The target returned fire with small calibre automatic weapons which are splashing just short of Baya. She was also returning Blenny's fire with what appeared to be a 3" gun or 6 pdr. The patrol craft was belching great volumes of smoke and was maneuvering at a speed of about 20 knots. Position was 06°27'S, 112°00'E. 0800 hours - Ceased firing and broke off the attack after firing 71 rounds for no hits on the enemy which was now fleeing from the scene.
Submarine USS Blenny: USS Blenny (Cdr. W.H. Hazzard, USN) attacked a Japanese patrol vessel with gunfire together with USS Baya to the north-west of Surabaya, Java, Netherlands East Indies in position 06°32'S, 112°00'E. No hits were obtained by either submarine and the action was broken off. (All times are zone I, -9) 0558 hours - In position 06°14'S, 112°02'E obtained SJ radar contact bearing 196°(T), range 13000 yards. 0559 hours - Contacted USS Baya to discuss how to attack. Decided to attack at 0730 hours. 0710 hours - Battle stations gun action. 0722 hours - The target had sighted us and headed towards while firing at us. 0723 hours - In position 06°32'S, 112°00'E opened fire with 5" from a range of 8000 yards. USS Baya was also firing at the target. Range then decreased to 6500 yards and the targets return fire straddled Blenny. Range was then opened to 8000 yards as the enemy's range was about 7500 yards. 0810 hours - Ceased firing and told USS Baya to do the same. The enemy made off towards Surabaya. During the action Blenny expended 65 rounds of 5" but no hits had been obtained.
Submarine USS Blueback: USS Blueback (Cdr. M.K. Clementson, USN) ended her 3rd war patrol at Subic Bay, Philippines. She was escorted in by USS Johnnie Hutchins (Lt.Cdr. H.M. Godsey, USNR).
Submarine USS Bugara: USS Bugara (Cdr. A.F. Schade, USN) made a torpedo attack on an enemy convoy in the Gulf of Siam in position 07°20'N, 103°40'E. A total of nine torpedoes were fired but no hit were obtained. The convoy attacked was made up of the small tankers Kyoei Maru No.3 (1189 GRT, built 1941), Hishi Maru No.3 (851 GRT, built 1944) and two other unidentified ships. They were escorted by by the destroyer Kamikaze, the auxiliary minesweeper Toshi Maru and two other unidentified escorts. (All times are zone I, -9) 19 July 1945 2205 hours - In position 07°20'N, 103°40'E obtained radar contact bearing 282°(T) at a range of 18000 yards. Enemy course 025°(T), speed 9 knots. Went ahead at 17 knots to gain a favourable attack position. Received information that USS Cod and USS Bumper were on the port flank of this convoy and USS Brill and we were on the starboard flank. Brill said she was going in to attack, told him we would follow him in. 20 July 1945 0010 hours - Now in the center of the convoy. Fired two torpedoes at a small engines aft tanker from 850 yards, two more torpedoes at a second engines aft tanker from 950 yards, two torpedoes at a small transport or sea truck from 1500 yards, one torpedo at a patrol vessel from 900 yards and finally two torpedoes at a large trawler also thought to be an escort from 700 yards. No hits were obtained !!!???. No counter attack followed. All torpedoes had been heard to run normal. Possibly they ran under. Brill also said her torpedoes ran under. Decided against further torpedo attacks.
Submarine USS Bumper: During 19/20 July 1945, USS Bumper (Cdr. J.W. Williams, Jr., USN), made four torpedo attacks on a Japanese convoy. In the first three attacks the Japanese destroyer Kamikaze was attacked with a total of 13 torpedoes which all missed. In the fourth attack Bumper torpedoed and sank the Japanese tanker Kyoei Maru No.3 (1189 GRT, built 1941) in the Gulf of Siam in position 08°08'N, 103°40'E. (All times are zone I, -9) 19 July 1945 1610 hours - Sighted three Japanese floatplanes. They were circling, most likely they were cover for a convoy. Turned towards them. 1722 hours - Sighted the masts of a destroyer. Battle stations torpedo. The contact developed into a convoy made up of two small tankers and a very small freighter escorted by several patrol craft. The destroyer was of the Kamikaze class. Commenced an attack on the destroyer. Position was 06°55'N, 103°40'E. 1815 hours - In position 06°50'N, 103°35'E fired three bow torpedoes at the destroyer. Then went deep to 160 feet. 1820 hours - The first of six single depth charges was dropped. None were very close. 1930 hours - Returned to periscope depth. Sighted the destroyer at a range of 7500 yards. 2044 hours - Surfaced in a heavy rain storm. No radar contact. Went ahead full on two engines, charging on the other two hading up the convoy's base course. We want that destroyer on the bottom of the sea. 2120 hours - Went ahead full on three engines, now charging on one engine. 2126 hours - Received a contact report from USS Brill. 2302 hours - SJ radar contact on the enemy bearing 120°(T), range 17000 yards. Commenced drawing ahead. 2314 hours - USS Brill communicated that she was attacking. 20 July 1945 0053 hours - Turned in to attack again. 0100 hours - Submerged to ST radar depth. 0135 hours - In position 07°45'N, 103°40'E fired six bow torpedoes from 2040 hours. 0136 hours - The destroyer turned away and all torpedoes missed again. 0139 hours - The destroyer is running away. 0254 hours - Surfaced. Commenced attack on the convoy itself. 0346 hours - In position 07°58'N, 103°40'E fired the last four bow torpedoes at the nearest target. Range was 1800 yards. All missed. Opened out to the north-west. 0355 hours - Started another attack. 0437 hours - In firing position but range was 3000 yards. Decided to start another attack run and get in closer. Opened out on the convoy's port quarter and then went in again. 0529 hours - In position 08°08'N, 103°40'E fired the last three torpedoes on board from the stern tubes at a tanker. Torpedo run was 2200 yards. 0531 hours - Observed and heard a timed hit on the target. Then opened out to 7500 yards. The target was stopped on the radar scope. 0605 hours - The target was still on the radar scope. Closed to sink it with gunfire if needed. When closing the radar pip was seen to come from the target's bow section that was sticking high in the air. The remainder of the ship was below the water. 0630 hours - All ahead full and made off for deeper water. In the evening course was set for Subic Bay to reload torpedoes.
Submarine USS Capitaine: USS Capitaine (Lt.Cdr. E.S. Friedrick, USN) was docked at Fremantle.
Submarine USS Chopper: USS Chopper (Cdr. S. Filipone, USN) conducted exercises off Key West.
Submarine USS Hawkbill: While operating off the east coast of Malaya USS Hawkbill (Lt.Cdr. W. Scanland, Jr.) sank a small Japanese vessel with gunfire in position 04°29'N, 103°29'E and another one in position 04°30'N, 103°28'E.
Submarine USS Lizardfish: USS Lizardfish (Cdr. O.M. Butler) sank a small Japanese vessel with gunfire off the Sunda Strait in position 05°41'S, 106°37'E.
Submarine USS Sea Poacher: While on her 4th war patrol USS Sea Poacher (Lt.Cdr C.F. Leigh) sank two small Japanese vessels with gunfire off the east coast of Honshu, Japan in position 37°29'N, 141°06'E.
Submarine USS Threadfin: USS Threadfin (Cdr. J.J. Foote) torpedoed and sank the Japanese minesweeper W-39 (648 tons, offsite link) northwest of Mokpo, Korea in position 35°01'N, 125°42'E.
Submarine HMS Spark: HMS Spark (Lt. D.G. Kent, RN) was docked at Subic Bay.
Submarine HMS Spur: HMS Spur (Lt. P.S. Beale, RN) arrived at Trincomalee.
Submarine HMS Tuna: HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Kiel.
Submarine HMS Thule: HMS Thule (Lt.Cdr. A.C.G. Mars, DSO, DSC, RN) sank a coaster with gunfire of the north coast of Java, Netherlands East Indies in position 06°13'45"S, 108°16'25"E. (All times are zone -9) 1335 hours - Surfaced in position 06°12'S, 108°16'E. Closed the coast and gunned a 150 ton coaster, which was unladen and Westbound. The enemy made for the beach. She was hit about 25 times (for 42 rounds expended) and sank at 1346 hours until the hatches were awash. The wreck is in position 06°13'45"S, 108°16'25"E. 1353 hours - Bombed by a Japanese aircraft. Two bombs were dropped that landed 200 yards astern. Dived. The aircraft was not picked up on radar that was blanketed by shore and mountain echoes.
Submarine HMS Trump: At 1500 hours (time zone -9) HMS Trump (A/Lt.Cdr. A.A. Catlow, RN) sighted the British submarine HMS Trenchant southbound in position 16°23'S, 114°24'E. At 2000 hours HMS Trump sighted USS Hardhead southbound in position 14°58'S, 114°40'E
Submarine HMS Upstart: HMS Upstart (Lt. R. Westlake, RNVR) conducted exercises off Malta.
Submarine USS R-1: USS R-1 (Lt.Cdr. J.H. Cunningham, Jr., USNR) is put back in the water.
Submarine USS R-13: USS R-13 (Lt. D.C. Bowman, USNR) conducted exercises off Key West.
Submarine USS R-18: USS R-18 conducted exercises off Key West.
Submarine USS O-2: USS O-2 arrived at the Philadelphia Navy Yard from New London, Connecticut for decommissioning.