| dbp:desc
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- 0001-04-04 (xsd:gMonthDay)
- 0001-09-27 (xsd:gMonthDay)
- 0001-10-11 (xsd:gMonthDay)
- 0001-10-22 (xsd:gMonthDay)
- 0001-10-23 (xsd:gMonthDay)
- 0001-10-24 (xsd:gMonthDay)
- 0001-10-29 (xsd:gMonthDay)
- 0001-10-31 (xsd:gMonthDay)
- 0001-11-09 (xsd:gMonthDay)
- 0001-11-12 (xsd:gMonthDay)
- 0001-11-15 (xsd:gMonthDay)
- The Type DM minelayer Marinefahrprahm was sunk on this date. (en)
- The KFK-2-class naval drifter was sunk on this date. (en)
- The G-5-class motor torpedo boat was lost on this date. (en)
- The landing craft personnel (ramped) was lost on this date. (en)
- World War II: The sailing vessel was sunk in the Aegean Sea by . (en)
- The auxiliary river minesweeper was sunk on this date. (en)
- The MAL 1 type landing fire support lighter was lost on this date. (en)
- The was lost on this date. (en)
- The Siebel ferry was lost on this date. (en)
- The Type A Marinefahrprahm was sunk on this date. (en)
- The Type D Marinefahrprahm was sunk on this date. (en)
- The auxiliary minesweeper was lost on this date. (en)
- The guard ship was lost on this date. (en)
- The landing craft vehicle was lost on this date. (en)
- World War II: The cargo ship struck a mine and sank off Kristiansand, Norway. (en)
- The Siebelgefäß landing craft was sunk on this date. (en)
- The D-3-class motor torpedo boat was lost on this date. (en)
- The PiLB 40 type landing craft was lost on this date. (en)
- The armed yacht/submarine chaser was lost on this date. (en)
- The Mk 4 landing craft tank was lost on this date. (en)
- World War II: The cargo ship was torpedoed and sunk in the South China Sea by . (en)
- The KFK-2-class naval drifter/Vorpostenboot was sunk on this date. (en)
- World War II: The tanker was torpedoed and sunk in the Baltic Sea by . (en)
- The landing craft personnel (large) was lost on this date. (en)
- World War II: The tanker was torpedoed and sunk in the South China Sea by . (en)
- World War II: The auxiliary submarine chaser was torpedoed and sunk in the Strait of Malacca by . (en)
- World War II: The cargo ship struck a mine and sank in the Kattegat . (en)
- The auxiliary river minelayer was sunk on this date. (en)
- World War II: The T-351 Project 253l type MT-1-class minesweeper struck a mine and sank in the Baltic Sea off Reval, Estonia. (en)
- World War II: Convoy No. 3927: The cargo liner was torpedoed and sunk in the Pacific Ocean off the Bonin Islands by . Four troops and twelve crewmen were killed. (en)
- The Type VIIC submarine collided with a German merchant ship at Lofoten, Norway. She was consequently withdrawn from service as a result of damage sustained. (en)
- World War II: The submarine chaser was torpedoed and sunk in Laksfjord by . (en)
- The was lost in heavy weather in Lyme Bay, Dorset, United Kingdom. Her three crew were rescued by rocket apparatus, but two of the rescuers lost their lives. (en)
- World War II: The landing craft was torpedoed and sunk off the coast of Japan by . (en)
- World War II: The submarine chaser was sunk in the Aegean Sea south west of Cassandreia by and . (en)
- World War II: The tanker was sunk off Kristiansand, Norway by Bristol Beaufighter aircraft of the Royal Air Force. All 16 crew were killed or died of wounds. (en)
- World War II: The Artilleriefährprahm was bombed and sunk at Kirkenes, Norway by Soviet aircraft. (en)
- World War II: The cargo ship was torpedoed and sunk in Saltenfjord, Norway by with the loss of thirteen crew. (en)
- World War II: Convoy MOMA-06: The Mikage Maru-class auxiliary transport ship was torpedoed and sunk in the East China Sea by . 27 crewmen were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south west of Kyushu by . (en)
- The Type D Marinefahrprahm was sunk incomplete, probably at Gutehoffnungshutte, Wien, on this date. (en)
- World War II: Combined Convoys MATA-28 and MIMA-11: The tanker was torpedoed by and beached off Vigan, Luzon. Five passengers and four crewmen were killed. (en)
- World War II: The coaster was bombed and sunk off Haugesund, Norway by de Havilland Mosquito aircraft of 235, and 248 Squadrons, Royal Air Force and 404 Squadron, Royal Canadian Air Force. All crew were rescued. (en)
- World War II: Convoy MOMA-06: The transport ship was torpedoed and sunk in the Pacific Ocean south west of Kyushu by , or damaged, towed to Saishu Island where the troops she was carrying where put ashore without further information on the ship. (en)
- World War II: The submarine chaser struck a mine and sank in the Baltic Sea off Reval, Estonia. (en)
- thumb|Zuihō
World War II: Battle off Cape Engaño: The was bombed and sunk by aircraft from with the loss off 215 of her 974 crew. Survivors were rescued by and . (en)
- World War II: The tug was bombed and sunk in the Baltic by Soviet bombers. (en)
- World War II: Lapland War: The galliass was shelled, rammed and sunk in the Gulf of Finland off Osmundsholmar by . Both crew survived. (en)
- World War II: The landing ship was sunk off Okinawa by United States Navy aircraft. (en)
- World War II: The Type C2 Marinefahrprahm was shelled and sunk in error by and in the Adriatic Sea south of Jablanac, during a battle against British motor torpedo boats. There were 7 dead and 14 wounded. (en)
- World War II: Convoy SAMA-13: The Eastern Sword-class cargo ship was torpedoed and sunk in the South China Sea north west of Miri by . Twenty-four crewmen were killed. (en)
- World War II: Battle of Leyte Gulf: Convoy TA No. 2: The was bombed and sunk in the Sibuyan Sea south west of Masbate, Philippines by Grumman TBM Avenger and Grumman FM-2 Wildcat aircraft based on , and . Most of her 813 crew were rescued by , , and . (en)
- World War II: The Type R-301 minesweeper was torpedoed and sunk in the Arctic Ocean off Vardø, Norway by Soviet aircraft. 22 of her 37 crew were killed. (en)
- World War II: The minesweeper struck a mine and sank in the Baltic Sea off Reval, Estonia. (en)
- World War II: The was scuttled as a blockship at Volos, Greece. (en)
- thumb|right|Zuikaku sinkingWorld War II: Battle of Leyte Gulf: The was bombed and sunk in Leyte Gulf by aircraft based on with the loss of 843 of her 1,705 crew. Survivors were rescued by and . (en)
- World War II: Convoy MATA-28: The tanker was torpedoed and sunk in the South China Sea south of Formosa by , and . Ten crewmen were killed. (en)
- World War II: Convoy MATA-30: The transport, a converted Kamikawa Maru-class seaplane tender, was torpedoed and sunk in the South China Sea south of Formosa and west north west of Cape Bojeudor, Luzon, Philippines by . Eighty-one passengers and 24 crewmen were killed. (en)
- World War II: The auxiliary river minesweeper was scuttled on km 1462 of the Danube, near Dunaszekcső. (en)
- World War II: The Siebel ferry was sunk by Allied aircraft in Mikra Bay, Greece, with the loss of 5 lives. (en)
- World War II: The cargo liner was torpedoed and sunk in the South China Sea by . (en)
- World War II: The cargo ship was scuttled at Piraeus, Greece. (en)
- World War II: The cargo ship was bombed and sunk in the Aegean Sea off Volos, Greece by Allied aircraft. (en)
- World War II: The Albona-class minesweeper was scuttled at Salonika, Greece. (en)
- The Liberty ship collided in the Atlantic Ocean with . She caught fire and was consequently declared a constructive total loss. (en)
- World War II: The Asaka Maru-class transport was bombed and sunk in the South China Sea off the Pescadores by United States Navy aircraft. Two crewmen were killed. (en)
- World War II: The coaster was torpedoed and damaged in the North Sea north of Florø, Norway by , and . She came ashore south of Søreboneset. All nine crew were rescued by MTB-722. (en)
- World War II: The was sunk by a mine off Piraeus. Three crew were killed. (en)
- World War II: The auxiliary gunboat was torpedoed and sunk in the East China Sea by . (en)
- World War II: The Rokko Maru-class auxiliary transport was bombed and sunk north west of Takao, Formosa by US aircraft. 90 killed. (en)
- World War II: Battle off Samar: The was shelled and sunk in the Pacific Ocean off Samar by with the loss of 253 of her 349 crew. (en)
- World War II: The torpedo boat was scuttled at Salonika. (en)
- World War II: The ran aground in the Palawan Strait, Philippines and was scuttled to prevent capture by the Japanese. The entire crew was picked up by . (en)
- World War II: The transport was sunk in the Baltic by Soviet bombers. (en)
- World War II: The cargo ship was torpedoed and sunk in the Formosa Strait by . Eight crew were killed. (en)
- World War II: A Greek schooner, possibly a Partizan supply vessel, was sunk in the Pagasetic Gulf by . (en)
- World War II: Convoy MOMA-05: The transport was torpedoed and sunk by and in the South China Sea . A total of 1,557 troops and 45 crewmen were killed. (en)
- World War II: The torpedo boat, a former , was damaged beyond repair in an American air raid on Genoa, Italy. (en)
- World War II: The auxiliary minesweeper was scuttled at Salonika. (en)
- World War II: The struck a mine in the English Channel off the coast of Normandy, France, and was beached. She was declared a constructive total loss. (en)
- The was lost by grounding off the west coast of France. (en)
- World War II: The Vorpostenboot was torpedoed and sunk in Korsfjord, Norway by Douglas A-20 Havoc aircraft of the Soviet Naval Air Force. 11 of her 51 crew were killed. (en)
- World War II: The coastal protection vessel was torpedoed and sunk in the Aegean Sea off Skiathos, Greece by . (en)
- World War II: The tanker was torpedoed and sunk in the Luzon Strait by . A total of 747 troops and 63 crewmen were killed. Survivors were rescued by . (en)
- World War II: The was bombed and sunk east south east of Hong Kong by Consolidated B-24 Liberator aircraft of the United States Fourteenth Air Force. (en)
- World War II: The tanker was torpedoed and sunk in the South China Sea north of Borneo by . (en)
- World War II: The tanker was shelled and sunk in Genoa, Italy. Raised and scrapped post-war. (en)
- World War II: The transport ship was torpedoed and sunk in the South China Sea by . (en)
- The was wrecked at Saipan, Northern Mariana Islands in a storm. (en)
- World War II: The cargo ship was torpedoed and sunk in the Arctic Sea off Kiberg, Norway by , , , and . (en)
- World War II: combined Convoys MATA-28 and MIMA-11: The tanker was torpedoed and sunk in the South China Sea off Vigan by . Fifty-six of her 58 crew were killed. (en)
- World War II: Battle of Leyte Gulf: The B1 type submarine was sunk in the Pacific Ocean by or with the loss of all 94 crew. (en)
- World War II: The KFK 2-class naval drifter was sunk at Kirkenes by Soviet aircraft. There were two dead and three wounded. (en)
- The Siebelgefäß landing craft was sunk sometime in October. (en)
- World War II: The cargo liner was torpedoed and sunk in the South China Sea north west of Mako, Pescadore Islands, by . Two troops and five crewmen were killed. (en)
- World War II: The torpedo boat struck a mine and sank in the Kattegat off Aalborg. (en)
- World War II: The auxiliary minesweeper was scuttled at Salonika, Greece. (en)
- World War II: The Mucke-class trawler was damaged by an explosion off Hellisoy. She was towed to Lervik where she was sunk by rockets from British aircraft. (en)
- World War II: The C2 Type Marinefährprahm was torpedoed and sunk in the Adriatic Sea by , , and (en)
- World War II: The unfinished cargo ship was scuttled at Amsterdam, North Holland, Netherlands. She was raised post-war and completed as Stad Leiden for Dutch owners. (en)
- World War II: Convoy TAMA-29: The cargo ship was torpedoed and damaged in the South China Sea by . She ran aground and exploded 2½ hours later after being abandoned. a total of 191 troops and eight crewmen were killed. (en)
- World War II: The was shelled, beached and scuttled at Samos, Greece. (en)
- World War II: The cargo ship was bombed and sunk at Röytä, Finland by German dive bomber aircraft. One crew was killed and two wounded. (en)
- World War II: The tanker struck a mine and sank off Sandakan. (en)
- World War II: The Liberty ship was sunk at Leyte, Philippines by a Japanese kamikaze aircraft. She was later refloated and used as a depot ship. (en)
- World War II: Battle of Leyte Gulf: The was bombed and sunk in the Leyte Gulf by aircraft based on and with the loss of 903 of her 1,504 crew. Survivors were rescued by and . (en)
- World War II: The Type C2 Marinefahrprahm was scuttled in the Baltic Sea off Sõrve Peninsula due to damage suffered in the days before in ground and air attacks. (en)
- World War II: The PiLB 39 Type personnel landing craft was sunk at Saaremaa by Soviet bombers. (en)
- World War II: The was sunk in the Aegean Sea south west of Cassandreia by and . (en)
- World War II: The landing craft infantry was sunk when an Imperial Japanese Army Mitsubishi Ki-21 "Sally" aircraft hit by anti-aircraft fire crashed into her in Leyte Gulf. Seven crew were killed, five missing and nine suffered severe burns, one dying later. (en)
- World War II: The Type R-151 minesweeper was scuttled at Salonika. (en)
- World War II: The gunboat struck a mine and sank in the Baltic Sea off Reval, Estonia. (en)
- World War II: Battle of Leyte Gulf: The was bombed and sunk west of Panay by aircraft based on with the loss of 58 of her 200 crew. Survivors were rescued by and . (en)
- The auxiliary patrol boat was sunk by a mine during a minesweeping operation west of Malmö. Eight crew were killed and one survived. (en)
- The was sunk in the Solomon Sea north of Langemak, New Guinea in a collision with the tanker . (en)
- World War II: Convoy MI-23: The cargo ship was torpedoed and damaged in the Formosa Strait off Turnabout Island by . She was beached in Chuanchow Bay, capsizing the next day and becoming a total loss. There were no casualties. (en)
- World War II: The KFK 2-class naval drifter/minesweeper was sunk in the Baltic Sea by Soviet aircraft. (en)
- World War II: The coaster was sunk in the North Sea by British aircraft. (en)
- The s were caught in a storm and sank off Land's End, Cornwall. (en)
- World War II: The cargo ship was bombed and sunk at Stralsund, Germany, by Allied aircraft. (en)
- World War II: Convoy No. 3927: The was bombed and sunk in the Pacific Ocean north north west of Okinawa by United States Navy aircraft. (en)
- World War II: The S-2-class E-boats were scuttled at Salonika. (en)
- The MAL 1 type landing fire support lighter disappeared between Leros and Salonica. There were no survivors. (en)
- The tanker sank in a gale off Savannah, Georgia United States with the loss of all 21 crew. (en)
- World War II: The torpedo boat was sunk at Šibenik, Yugoslavia by British de Havilland Mosquito aircraft. (en)
- The was lost in the Mediterranean Sea between Marseille, France, and La Maddalena, Italy, sometime in October. (en)
- World War II: The Toun Maru-class auxiliary transport was torpedoed and burned out in the Formosa Strait north north west of Mako by . A total of 131 troops, five passengers, twelve gunners and sixteen crewmen were killed. Towed to Mako, Pescadores and then to Takao and declared a constructive total loss. Scrapped in 1945. (en)
- The LS 2 Type light schnellboote were lost on this date. (en)
- World War II: The FR 1-class river minesweeper was scuttled on km 1462 of the Danube, near Dunaszekcső. (en)
- World War II: Convoy MATA-30: The Daifuku Maru No. 1-class auxiliary transport was torpedoed and sunk in the South China Sea north west of Vigan by the submarine . Three gunners and ten crew were killed. One hundred survivors were rescued by . (en)
- World War II: The Standard 2D Type cargo ship was torpedoed and sunk in the Pacific Ocean off Chichi-jima by . (en)
- World War II: The cargo ship was bombed and sunk in the Baltic Sea north of Gotenhafen by Soviet aircraft with the loss of 410 of the 3,171 people on board. (en)
- World War II: The was torpedoed and sunk in the South China Sea west south west of Manila and north west of Lubang Island, Philippines, by . Survivors were rescued by , , and . (en)
- World War II: The cargo ship struck a mine and sank in the Gulf of Finland . All 23 crew were rescued by . (en)
- World War II: The cargo ship struck a mine and sank off Palawan, Philippines. (en)
- World War II: The weapons training ship struck a mine and sank in the Kattegat off Aalborg, Denmark. (en)
- The ran aground off northern Luzon, Philippines, and was abandoned. (en)
- World War II: The auxiliary cruiser was sunk in the South China Sea off the Pescadores by United States Navy aircraft. (en)
- World War II: The Vorpostenboot was sunk by a mine northwest of Anholt. (en)
- World War II: The Fairmile D motor gunboat was sunk by a mine in the Adriatic Sea off Rimini, Italy. (en)
- World War II: The Type C escort ship was torpedoed and sunk in the Luzon Strait off Luzon by . Lost with all 170 hands and all of the survivors from . (en)
- World War II: Convoy MOMA-05: The transport was torpedoed and sunk by in the South China Sea . A total of 2,200 troops and 37 crewmen were killed. (en)
- World War II: Convoy MATA-29: The Dairen Maru-class auxiliary transport was bombed and sunk at Calayan Island by United States Navy aircraft. (en)
- thumb|USS St. Lo
World War II: Battle of Leyte Gulf: The was sunk in the Pacific Ocean near Leyte, Philippines by Japanese kamikaze aircraft with the loss of about 140 of her 889 crew. Survivors were rescued by , , and . (en)
- World War II: The Liberty ship was severely damaged by a Japanese aircraft that struck her off Leyte, Philippines, after being set ablaze by anti-aircraft fire. There were no casualties. She was beached east of the Palo River. Eventually refloated and declared a total loss. The vessel was towed to Australia and then to California arriving in early 1946, scrapped in 1957. (en)
- World War II: The Harbour Defence Motor Launch was sunk in error while anchored in the Raaf River off Maungdaw, Burma by two Supermarine Spitfire aircraft. Five crew were killed, and four more on which was damaged in the same attack. (en)
- World War II: Convoy SAMA-13: The Choyo Maru-class auxiliary transport was torpedoed and sunk in the South China Sea north west of Miri, Borneo by . A passenger and three crewmen were killed. (en)
- World War II: The Harbour Defence Motor Launch was shelled and sunk off Piraeus, Greece by and . The whole crew survived and was captured by the Germans. (en)
- The KFK 2-class naval drifters were lost on this date. (en)
- World War II: The was sunk by a mine off Salonika. (en)
- World War II: The was sunk by mine in the English Channel off Boulogne, Pas-de-Calais, France. There was no casualty. (en)
- World War II: The was sunk by a mine off Gorgona Island, Italy. Seven crew were killed. There were 12 survivors. (en)
- World War II: The Vorpostenboot was sunk in Ålesund by Bristol Beaufighter aircraft of the Royal Air Force. (en)
- World War II: Battle of Leyte Gulf: The was bombed and sunk in the Pacific Ocean off the west coast of Panay Island, Philippines by aircraft from with the loss of 48 of her 200 crew. Survivors were rescued by and . (en)
- The MNL-1 Type Marinefährprahms were sunk sometime in October. (en)
- World War II: The cargo ship was torpedoed and sunk in the South China Sea west south west of Manila and north west of Lubang Island (en)
- World War II: The was sunk north of Oloilo, Panay by aircraft based on . Sunk with all hands plus survivors of . (en)
- World War II: The guard boat was sunk in the Strait of Malacca by . (en)
- World War II: The Vorpostenboot was sunk in the North Sea off Hook of Holland, South Holland, Netherlands by vessels of the 4th MTB Flotilla, Royal Navy. 19 crew were lost. (en)
- World War II: The minesweeper was sunk in Hopseidet by a Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The was sunk by a mine in the Zowariau Channel off Ulithi Carolina Islands . Ten crew were killed or died of wounds. (en)
- World War II: The was mistakenly depth charged and sunk in the Molucca Sea off Morotai, Netherlands East Indies by with the loss of all 79 people on board. (en)
- The Liberty ship was driven ashore at Terceira Island, Azores, Portugal. She was declared a constructive total loss and subsequently scrapped. (en)
- World War II: The cargo ship was scuttled at Venice, Italy. Wreck later scrapped. (en)
- World War II: Convoy MATA-30: The transport was torpedoed and sunk in the South China Sea north west of Vigan by . Twelve crew were killed. (en)
- The sank while under tow in the English Channel. (en)
- The was lost in October. (en)
- The was lost at Palau to an unknown cause. (en)
- The was lost in the Barents Sea. (en)
- The was sunk on this date. (en)
- The Siebel ferry foundered sometime in October. (en)
- The auxiliary minelayers were lost on this date. (en)
- The cargo ship was wrecked off Stavanger, Norway. (en)
- The decoy ship was lost on this date. (en)
- The submarine chaser was lost on this date. (en)
- The Type DM minelayer Marinefahrprahm was sunk incomplete, probably at Gutehoffnungshutte, Wien, on this date. (en)
- World War II: The cargo ship was sunk at Nancowry, Nicobar Islands by Royal Navy aircraft. Eleven crewmen were killed. (en)
- The landing ship tank was lost by grounding off Livorno, Tuscany, Italy (en)
- World War II: The was scuttled at Piraeus. (en)
- World War II: The KFK 2-class naval drifter was scuttled at Vadsø, Norway. (en)
- World War II: The was sunk by the malfunction of one of her own torpedoes in the Formosa Strait off Turnabout Island with the loss of 74 of her 85 crew. The survivors were rescued by the frigate and taken as prisoners of war. (en)
- World War II: The cargo ship was sunk in Phuket Harbour, Thailand by Royal Navy frogmen using Chariots. (en)
- World War II: The transport was bombed and sunk at Saaremaa by Soviet Ilyushin Il-2 aircraft. (en)
- World War II: The was sunk by a mine in Seine Bay , west of Le Havre, Seine-Inférieure, France. (en)
- World War II: The tanker struck a mine and sank in the Mediterranean Sea off Cape Kalauri with the loss of 24 lives. (en)
- World War II: The minesweeper struck a mine and sank in the North Sea north west of Ostend, West Flanders, Belgium. (en)
- World War II: The Jacqueline-class trawler/minesweeper was mined and sunk off Den Hoofden. (en)
- World War II: The cargo ship was bombed and sunk in the North Sea off Vlieland, Friesland, Netherlands. (en)
- World War II: Convoy MOMA-05: The cargo ship was torpedoed in the Pacific Ocean by . Her fore section sank while her aft section remained afloat and was beached in Lompoc Bay. 1,557 troops and 3 crew died. (en)
- World War II: The Type VIIC submarine was bombed and sunk at Bergen by Royal Air Force aircraft. (en)
- World War II: The tug was sunk at Tallinn by mines. Her master and three crewmen were killed. (en)
- World War II: The Type B1 submarine was depth charged and sunk in the Philippine Sea off Dinagat Island, Philippines by . (en)
- World War II: The transport was torpedoed and sunk in the South China Sea north west of Manila by , and . A total of 346 troops, three gunners and ten crewmen were killed. (en)
- World War II: The coaster was bombed and sunk at Rørvik, Norway by Allied aircraft with the loss of a crew member. (en)
- World War II: The was sunk west of Penang, Malaya by . (en)
- World War II: The was sunk by aircraft from Task Force 77 80 miles north of Oloilo, Panay . Sunk with all hands. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south east of Kyushu by . (en)
- World War II: Battle of Surigao Strait: The was torpedoed and sunk in the Surigao Strait by and . (en)
- World War II: The Siebel ferry was bombed and sunk in the Baltic by Soviet bomber aircraft. (en)
- World War II: The Fairmile B motor launch was sunk by a mine off Piraeus. Four crew were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Aegean Sea north west of Chios, Greece by . (en)
- World War II: The was torpedoed and damaged in the Molucca Sea off Morotai by with the loss of thirteen of her 215 crew. She was taken under tow by but later capsized and sank. (en)
- World War II: The cargo ship was torpedoed and sunk in the Aegean Sea south of Cassandreia, Greece by . (en)
- World War II: The coaster was torpedoed and sunk in the Strait of Makassar by . (en)
- World War II: The tanker struck a mine and sank at Balikpapan, Netherlands East Indies. (en)
- World War II: The submarine chaser was sunk in Berlevåg, Norway, by . 25 of her 62 crew were killed. (en)
- World War II: The dredger was torpedoed and sunk in the Baltic Sea off Ventspils by . (en)
- World War II: The Type 1940 minesweeper was torpedoed and sunk in the Arctic Ocean off Kiberg, Norway by and . 52 of her 78 were crewmen killed. (en)
- World War II: Battle of Leyte Gulf: The was bombed and sunk in the Sulu Sea off Negros, Philippines by Consolidated B-24 Liberator aircraft of the 5th Bomb Group, United States Thirteenth Air Force. Two hundred and fifty crewmen were killed. Her captain and 283 crewmen were rescued by . (en)
- World War II: Convoy MATA-29: The transport was bombed and sunk at Calayan Island by United States Navy aircraft. (en)
- World War II: The Dogo Maru-class auxiliary transport was bombed and sunk off Romblon Island, Philippines by US Navy aircraft. (en)
- World War II: The Kinjo Maru-class auxiliary minelayer was bombed and sunk at Takao, Formosa by US Navy aircraft from Task Force 38. (en)
- World War II: Battle of Surigao Strait. The was torpedoed and sunk by . (en)
- World War II: The struck a mine and sank in the Baltic Sea east of Suursaari, Finland with the loss of five crew. (en)
- World War II: The coaster was torpedoed and sunk at Phuket, Thailand by . (en)
- World War II: The was torpedoed and sunk in the Kii Strait by . (en)
- World War II: The cargo ship was torpedoed and sunk in the South China Sea by . A total of 1,318 troops, 63 crewmen and 47 gunners were killed. (en)
- The cargo ship dragged her anchor and collided with in the English Channel off the French coast. She was declared a total loss. (en)
- World War II: The was shelled and sunk in the Pacific Ocean by with the loss of all 101 crew. (en)
- World War II: Convoy TAMA 28: The Samarang Maru-class auxiliary transport was torpedoed and sunk in the South China Sea north west of Vigan by and . Four naval shock troops, a gunner and three crew were killed. (en)
- The 43-gross register ton, scow was wrecked at Cape Darby on the west-central coast of the Territory of Alaska. (en)
- World War II: The cargo liner was torpedoed and sunk in the South China Sea north north west of Mako, Pescadore Islands, by . A crewman was killed. (en)
- World War II: Battle of Surigao Strait: The was torpedoed, shelled and sunk in the Surigao Strait by United States Navy ships with the loss of 191 of her 230 crew and all survivors from which she had rescued earlier that day. (en)
- World War II: The coaster was sunk by Allied aircraft at Zadar. Raised by her Yugoslav owners, repaired and returned to service in 1948. (en)
- World War II: Convoy YUTA-12: The transport was skip bombed and sunk south of Hong Kong by North American B-25 Mitchell aircraft. Four troops and 50 crewmen were killed. (en)
- World War II: Convoy TAMA-29: The cargo ship was torpedoed and sunk in the South China Sea by . All 29 crewmen and 120 passengers were killed. (en)
- The cargo ship caught fire and sank in the Atlantic Ocean with the loss of three of the 53 people on board. (en)
- World War II: The transport was bombed and sunk at Mõntu, Saaremaa, Estonia by Soviet Ilyushin Il-2 aircraft. (en)
- The Type D Marinefahrprahm was sunk sometime in October. (en)
- World War II: The cargo ship was torpedoed and sunk off Manila, Philippines by . Two crewmen and an unknown number of the 500 troops she was carrying were killed. (en)
- World War II: The tug struck a mine and sank in the Baltic Sea off Reval. (en)
- World War II: The lighter was sunk in the Makassar Strait by . (en)
- World War II: The Artilleriefährprahm was sunk in the North Sea off Terschelling, Friesland, Netherlands by Allied aircraft. Later raised, repaired and returned to service. (en)
- The No. 41 armored motor gunboat was lost on this date. (en)
- World War II: The light cruiser was torpedoed and sunk by the submarine at after the Battle of Leyte Gulf. (en)
- World War II: The Artilleriefährprahm was bombed and sunk at Kirkenes by Soviet aircraft. (en)
- World War II: Convoy No. 7222: The Shinshu Maru-class auxiliary tanker was torpedoed and sunk in the South China Sea off Nha Trang, French Indochina by . 16 crewmen were killed. (en)
- World War II: The KFK 2-class naval drifter/minesweeper was bombed and sunk in the Baltic Sea off the Sõrve Peninsula, Saaremaa, Estonia by Soviet aircraft. (en)
- World War II: The was scuttled at Salonika, Greece. (en)
- World War II: Battle off Samar: The was torpedoed and sunk by Grumman TBM Avenger aircraft based on , and in the Philippine Sea off Samar Island . All but one of her survivors were rescued by but were lost with the sinking of that ship the next day. The one survivor was not picked up but drifted to shore alive. (en)
- World War II: The Type DM minelayer Marinefahrprahm exploded on the Danube near Stari Banovici when Soviet artillery hit the mines she was carrying. There were no survivors. (en)
- The foundered in a storm in Leyte Gulf off Leyte, Philippines . (en)
- World War II: The tanker struck a Japanese mine and sank off Brunei with the loss of 3 crew. (en)
- World War II: Lapland War: The galliass was shelled, rammed and sunk in the Gulf of Finland off Osmundsholmar by . The crew survived. (en)
- The Type XXIII submarine sank in the Baltic Sea off Hela Pomerania in a diving accident with the loss of fifteen of her nineteen crew. (en)
- World War II: The submarine chaser was bombed and sunk in the North Sea off the coast of Norway by Bristol Beaufighter aircraft of the Royal Air Force. One crew was killed. (en)
- World War II: The seaplane tender was sunk at Rørvik, Norway by aircraft from . (en)
- World War II: The cargo ship was torpedoed and sunk in the Arctic Ocean off Kirkenes, Norway by . There were 19 dead and 49 survivors. (en)
- World War II: The cargo ship struck a mine and sank off Stad, Norway. (en)
- World War II: The patrol tug was sunk by Allied aircraft at La Spezia, Italy. (en)
- World War II: Convoy MATA-30: The Kokuryu Maru-class auxiliary transport was torpedoed and sunk in the South China Sea north west of Vigan by or . A total of 324 passengers, five gunners and 63 crew were killed. (en)
- The was lost in an explosion, probably a mine, off Pasha Island, in the Aegean Sea. Four crew were killed. (en)
- World War II: Battle of Leyte Gulf: The was shelled and damaged in the Pacific Ocean east south east of Legaspi by United States Navy destroyer. She was then torpedoed and sunk by . Lost with all hands plus all the survivors of she had rescued the day before. (en)
- World War II: The was bombed and sunk off the Philippines by American aircraft. (en)
- World War II: The KFK-2-class naval drifter/minesweeper was bombed and sunk in the Baltic Sea off the Ventspils, Latvia by Soviet aircraft. (en)
- World War II: The cargo ship was torpedoed and sunk in the Sulu Sea by . (en)
- World War II: Convoy 3928:The auxiliary storeship was torpedoed and sunk off the coast of Japan by . One crewman was killed. (en)
- World War II: The was bombed and sunk off Ryuku by American aircraft. (en)
- World War II: The cargo ship was bombed and sunk by aircraft off Northern Norway. (en)
- World War II: Convoy TAMA-28: The Toyooka Maru-class auxiliary transport was torpedoed and sunk in the Luzon Strait by . A total of 1,211 troops and 73 crewmen were killed. (en)
- World War II: The transport ship was torpedoed and sunk in the South China Sea west of Luzon by (en)
- World War II: The uncompleted Sperrbrecher was scuttled by the Germans as a blockship near Maassluis, Netherlands. The wreck was raised in 1947 and completed in 1949. (en)
- World War II: The Wa-1-class minesweeper was sunk off Panay, Philippines by American aircraft. (en)
- World War II: The torpedo boat, a former , was sunk off Piraeus, Greece by British aircraft. (en)
- World War II: Battle of Leyte Gulf: The was torpedoed and sunk in the Leyte Gulf, probably by , with the loss of 76 of her 215 crew. Survivors were rescued by . (en)
- World War II: The cargo ship was torpedoed and sunk in the Strait of Makassar by . (en)
- World War II: Battle of Leyte Gulf: Convoy TA No. 2: The was sunk in the Guimaras Strait by aircraft from at . (en)
- World War II: Convoy MATA-29: The was bombed and sunk at Calayan Island, Philippines by United States Navy aircraft. (en)
- World War II: The cargo ship was bombed and sunk in the North Sea off Bergen, Norway by Allied aircraft. (en)
- World War II: The lighter struck a mine and sank in Fehmarnsund. (en)
- The LS 2-class light E-boats were lost on this date. (en)
- World War II: Convoy TAMA-29A: The No.103-class landing ship was bombed and sank in Salomague Bay, near Lopoc Bay by US Navy aircraft. (en)
- thumb|right|HMCS Magog after being torpedoedWorld War II: Convoy ONS 33G: The was torpedoed and damaged in the Gulf of St. Lawrence by : She lost off her stern and was declared a constructive total loss. Three of the 150 crew were killed. (en)
- World War II: The Vorpostenboot was bombed and sunk in Syltefjord by Soviet aircraft. (en)
- World War II: The was being used as a stationary anti-aircraft battery when she was bombed and sunk in Manila Harbour by United States Navy aircraft. (en)
- World War II: The Type VIIC submarine was destroyed in a Royal Air Force air raid on Bergen with the loss of two crew. (en)
- World War II: The minelayer was torpedoed and sunk in the Java Sea by . (en)
- World War II: Battle off Samar: The was shelled and sunk in the Pacific Ocean off Samar by Imperial Japanese Navy warships with the loss of 186 of her 327 crew. Wreck located in 2021 in of water, the deepest shipwreck surveyed. (en)
- World War II: The coaster was sunk at Volos, Greece by aircraft of 809 Squadron, Fleet Air Arm, based on . (en)
- World War II: The guard ship was sunk in the Aegean Sea south west of Cassandreia, Greece by and . (en)
- World War II: The Liberty ship was torpedoed and sunk in the Pacific Ocean by . I-12 fired on the survivors with a machine gun killing four crewmen, a United States Army officer and four gunners. Survivors were rescued by the next day. (en)
- World War II: The Type A Marinefahrprahm was scuttled near Neiden, Norway due to damage from air attack. (en)
- World War II: The Type VIIC submarine was sunk off Wilhelmshaven, Lower Saxony during a British air raid with the loss of one crew member. (en)
- World War II: Battle of Leyte Gulf: The was bombed and damaged in the Leyte Gulf by aircraft based on and . She was then shelled and sunk by , , and with the loss of all 800 crew. (en)
- World War II: The Vorpostenboot was sunk at Rørvik by Allied aircraft. (en)
- World War II: The fishing trawler was sunk in the Baltic Sea by with the loss of 13 lives. (en)
- World War II: The coaster was bombed and sunk in Persfjord, Norway by Soviet Air Force aircraft. (en)
- World War II: The was shelled and sunk in the North Sea off IJmuiden by Kriegsmarine surface ships. (en)
- World War II: The cargo ship struck a mine and sank off Gothenburg, Sweden. (en)
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