| dbp:desc
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- 0001-09-01 (xsd:gMonthDay)
- 0001-09-05 (xsd:gMonthDay)
- 0001-09-06 (xsd:gMonthDay)
- 0001-09-09 (xsd:gMonthDay)
- 0001-09-12 (xsd:gMonthDay)
- 0001-09-13 (xsd:gMonthDay)
- 0001-09-15 (xsd:gMonthDay)
- 0001-09-19 (xsd:gMonthDay)
- 0001-09-20 (xsd:gMonthDay)
- 0001-09-21 (xsd:gMonthDay)
- 0001-09-25 (xsd:gMonthDay)
- 0001-09-26 (xsd:gMonthDay)
- 0001-09-27 (xsd:gMonthDay)
- 0001-10-16 (xsd:gMonthDay)
- 0001-10-21 (xsd:gMonthDay)
- 1296000.0
- 4800.0
- 975.0
- World War II: The tanker was torpedoed and sunk in the Mediterranean Sea by . (en)
- The G-5-class motor torpedo boat was lost on this date. (en)
- The auxiliary river minesweeper was sunk on this date. (en)
- World War II: The lighter was sunk by a mine in the Black Sea. (en)
- The was lost on this date. (en)
- The R Type minesweeper was lost on this date. (en)
- The Type C Marinefahrprahm was sunk on this date. (en)
- The Type C2 Marinefahrprahm was sunk on this date. (en)
- The landing craft assault was lost on this date. (en)
- The naval trawler was lost on this date. (en)
- The StuBo42 type landing craft/motor launch was sunk on this date. (en)
- World War II: The was scuttled at Genoa. (en)
- The MO-2-class patrol vessel was lost on this date. (en)
- World War II: The sailing vessel was sunk in the Pacific Ocean by . (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by . (en)
- The No. 1-class landing boats were lost on this date. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the coast of Japan by . (en)
- World War II: The coaster was torpedoed and sunk in the Pacific Ocean off the coast of Japan by . (en)
- World War II: The naval drifter/minesweeper was lost on this date. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Honshu by . (en)
- The landing craft, personnel (large) was lost on this date. (en)
- The was lost in the Mediterranean Sea. (en)
- The LS 2-class light schnellboot was lost on this date. (en)
- World War II: The was lost as cargo when was sunk by in the Indian Ocean . (en)
- World War II: The MAS 501-class MAS boat was scuttled at Venice. (en)
- World War II: The submarine was scuttled at Genoa, Italy. Wreck later scrapped by Germany. (en)
- World War II: The R-25-class minesweeper was sunk in the Black Sea off Kerch, Soviet Union by Soviet aircraft. (en)
- World War II: The sloop was bombed and sunk at Nantes by Allied aircraft with the loss of two lives. (en)
- World War II: The Type VIIC submarine was depth charged, shelled, rammed and sunk in the Atlantic Ocean south east of Cape Farewell, Greenland by with the loss of all 50 crew. (en)
- World War II: Convoy UGS 17: The cargo ship was torpedoed and sunk in the Mediterranean Sea by with the loss of 47 of the 50 people on board. (en)
- World War II: The was sunk in the Aegean Sea off Skiathos by . (en)
- World War II: The Type C submarine was depth charged and sunk in the Coral Sea off Espiritu Santo by . All 101 crew killed. (en)
- World War II: The auxiliary gunboat was sunk by a mine in Kavieng Harbour, New Ireland. (en)
- World War II: The barge was sunk in the Black Sea by mines dropped by Soviet Ilyushin Il-4 aircraft. (en)
- World War II: The cargo ship was torpedoed and sunk in the Arabian Sea north west of the Maldive Islands by with the loss of one of her 100 crew. Survivors were rescued by . (en)
- World War II: The cargo ship was evacuating Italian troops from Albania when she bombed by German aircraft in the Strait of Otranto and ran aground to avoid sinking. More than 200 men were killed. The wreck sank some days later and was scrapped after the war. (en)
- Convoy No. 197: The cargo ship was driven ashore in a typhoon at Naze, Amami Oshima. Later refloated.. (en)
- World War II: The cargo ship, under charter to the Imperial Japanese Navy as a supply ship, was scuttled by her crew at Kobe, Japan, after the Italian government surrendered to the Allies. Raised in 1943, repaired and put into Japanese service as Ikutagawa Maru. (en)
- World War II: Convoy MI-12: The tanker was driven ashore at Amami-O-Shima by a typhoon. Refloated and returned to service. (en)
- World War II: The naval trawler/minesweeper struck a mine and sank in the North Sea off Ostend, West Flanders, Belgium. (en)
- World War II: The troopship was torpedoed and sunk in the Adriatic Sea off Venice by and . (en)
- World War II: The was bombed and sunk by US aircraft at Nantes, Loire Atlantique, France. (en)
- World War II: Convoy RINJI-B: The cargo ship was torpedoed and sunk in the East China Sea north of the Hoka Sho light, Formosa by . Two crew were killed. (en)
- World War II: The was sunk by German aircraft off Corfu with the loss of 103 crew. (en)
- World War II: The G-class destroyer was scuttled as a blockship at St Paul's Island, Malta. (en)
- World War II: The Higgins patrol torpedo boat sank in Casco Cove in Massacre Bay on the coast of Attu Island in the Aleutian Islands during a storm. (en)
- thumb|Roma
World War II: The was sunk in the Mediterranean Sea off Asinara by a Fritz X launched by a Dornier Do 217 of the Luftwaffe with the loss of 1,393 of her 2,021 crew. (en)
- World War II: The hospital ship was struck by a Henschel Hs 293 glide bomb in the Mediterranean Sea off Salerno, Italy, with the loss of 21 of her crew. The patients and surviving crew on board were rescued by . She was scuttled the next day by . (en)
- World War II: The Lursen E boat was scuttled at Molfalcone. Raised, but not repaired. (en)
- World War II: The was torpedoed and sunk in the Pacific Ocean by with the loss of seventeen of her 80 crew. (en)
- World War II: The Fort ship was torpedoed and sunk in the Indian Ocean south west of the Chagos Archipelago by with the loss of 57 of her 59 crew. (en)
- World War II: The MS 11-class MS boat was scuttled at Bocca di Magra. Raised, repaired and put in Kriegsmarine service as SA 2. (en)
- World War II: Convoy RINJI-B: The fleet oiler was torpedoed, exploded and sunk in the East China Sea north of the Hoka Sho light, Formosa by . (en)
- World War II: The was scuttled at La Spezia. Raised by the Germans, but not repaired. (en)
- World War II: The naval trawler/submarine chaser was sunk at Bastia by and . (en)
- World War II: Convoy No. 195: The Army requisitioned cargo liner was torpedoed and sunk in the East China Sea by . Twenty-nine passengers and four crewmen were killed. (en)
- World War II: The fishing vessel was sunk at Aléria, Corsica by gunfire from (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by and . (en)
- World War II: The gunboat was scuttled at Shanghai, China. (en)
- World War II: The Marinefährprahm was sunk at Bastia, Corsica, France by and . One crew was killed. (en)
- World War II: The MAS 423-class MAS boat was scuttled at Toulon, France. Raised, repaired and put in Kriegsmarine service as S 625. (en)
- The cargo liner ran aground and was wrecked on either St. Bees Island, or Whitsunday Island, Australia, and was abandoned. (en)
- World War II: The MAS 423-class MAS boat was scuttled at Pula. Raised, repaired and put in Kriegsmarine service as S 604. (en)
- World War II: The Vorpostenboot/naval whaler was torpedoed and sunk in the English Channel off Cap d'Antifer, Seine-Inférieure, France by and . (en)
- World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean by Martin PBM Mariner aircraft of the United States Navy with the loss of all 53 crew and one survivor from who had been taken aboard as a prisoner of war. (en)
- World War II: Convoy No. 192: The cargo ship was driven ashore at Amami-O-Shima by a typhoon. She was refloated and returned to service. (en)
- World War II: The Type C Marinefahrprahm was sunk by a mine off Gaeta, Italy. There were 15 dead and missing and 17 survivors. (en)
- World War II: Convoy Wewak No. 8: The Tenkai Maru-class auxiliary transport ship was torpedoed and sunk in the Pacific Ocean by . Three troops and three crew were killed. (en)
- World War II: The ship was sunk in the Pacific Ocean by . (en)
- World War II: The cargo liner was torpedoed and sunk in the Atlantic Ocean by with the loss of 22 of the 107 people on board. (en)
- World War II: The cargo ship was torpedoed and sunk in the Aegean Sea by Allied aircraft. (en)
- World War II: The passenger ferry , a former sloop, was sailing from Cephalonia to Greece with 840 Italian prisoners of war when she hit a mine off Argostoli and sank. 720 Italian prisoners of war were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Arctic Sea by , or sunk by mine with Soviet motor torpedo boats witnessing the sinking. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by with the loss of all 51 crew. (en)
- World War II: Convoy MI-12: The cargo ship was driven ashore at Amami-O-Shima by a typhoon. Refloated and returned to service. (en)
- World War II: The ship was sunk at Nantes during an American air raid. (en)
- World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean by . Her captain was taken as a prisoner of war, the rest of her 51 crew were rescued by . (en)
- World War II: The MAS 526-class MAS boat was sunk off Leros by German aircraft. (en)
- World War II: Convoy NSS 3: The Liberty ship was torpedoed and damaged in the Tyrrhenian Sea south of Salerno, Italy by with the loss of two of the 267 people on board. Survivors abandoned ship and were rescued by the convoy's escorts, including , which rescued 124 people. The crew reboarded William W. Gerhard. She was taken in tow by but a fire broke out and the crew were taken off. Her cargo of ammunition exploded and the ship broke in two, with the bow section sinking. The stern section was scuttled by USS Moreno. (en)
- Convoy No. 197: The cargo ship was driven ashore in a typhoon at Naze, Amami Oshima. Later refloated. (en)
- World War II: The Ekwator-class Vorpostenboot was torpedoed by British aircraft in the North Sea off Camperdown, and either beached, or sunk, off Den Helder, North Holland. (en)
- World War II: The Yoshida Maru No. 1-class auxiliary transport was bombed and sunk in the Indian Ocean south of Rangoon, Burma by Consolidated B-24 Liberator aircraft of the United States Tenth Air Force. (en)
- World War II: Convoys ONS 18/ON 202: The was torpedoed and sunk about southwest of Reykjavík by (en)
- World War II: Convoy ON 202: The tanker was torpedoed and sunk in the Atlantic Ocean (en)
- World War II: The Inverbank-class cargo ship was torpedoed and sunk in the Indian Ocean west of Cape Cormorin by . Six gunners and 40 crew were killed, 30 survivors were rescued by and . (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Hollandia, New Guinea by . (en)
- World War II: The severely damaged tanker was scuttled at Naples. She was raised in 1946, repaired and returned to service. (en)
- World War II: The G-5-class torpedo boat was sunk in the Black Sea by German action off the Kuban coast. (en)
- World War II: The was shelled by German shore batteries and bombed by German aircraft off La Maddalena, sinking the next day. 60 of her 280 crew did not survive the battle, the sinking or the ordeal at sea that followed. A part of the survivors were rescued by . (en)
- World War II: The cargo ship was bombed and sunk off Wewak, New Guinea by American aircraft. (en)
- World War II: The Liberty ship struck a mine and was damaged in the Mediterranean Sea . She was towed to Bizerta, Algeria but was declared a constructive total loss. (en)
- World War II: Convoy RINJI-B: The transport ship was torpedoed and sunk in the East China Sea north of the Hoka Sho light, Formosa by . Five crew were killed. (en)
- World War II: The minesweeper struck a mine and sank in the North Sea off Dunkerque Nord, France. (en)
- The sank in heavy weather in the Gulf of Alaska south of Kodiak, Territory of Alaska, at . All 12 crew were rescued by LST-479 . (en)
- World War II: The coaster was torpedoed and sunk in the East China Sea by . (en)
- World War II: The MAS 552-class MAS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as SA 14. (en)
- World War II: The Type R-41 minesweeper was sunk by a mine in the English Channel. (en)
- World War II: The torpedo boat was scuttled at La Spezia. Raised by the Germans but not repaired. (en)
- World War II: The sail auxiliary minesweeping boat was sunk in the Black Sea by , , and . (en)
- World War II: The was scuttled at La Spezia. Raised, repaired and put into Kriegsmarine service as UJ-2228. (en)
- World War II: The Type 1915 minesweeper was scuttled in Italy. (en)
- World War II: The cargo ship was torpedoed and sunk in the Norwegian Sea off Trondheim, Norway by and . (en)
- World War II: The naval drifter/minesweeper was sunk in the English Channel off Fécamp by , and . (en)
- World War II: The coastal tanker was sunk at Nantes, Loire-Inférieure during an American air raid. (en)
- World War II: The Liberty ship was torpedoed and sunk in the Indian Ocean by with the loss of two of her 68 crew. Survivors were rescued by , or reached land in their lifeboat. (en)
- World War II: The was bombed and sunk in the Gulf of Salerno by Luftwaffe aircraft with the loss of 18 of her 113 crew. (en)
- World War II: The minelayer was torpedoed and sunk northeast of Isola di Capraia, Italy by . 25 crewmen missing and 30 wounded. Survivors rescued by and . (en)
- World War II: The cargo ship was sunk in the Aegean Sea by , and . (en)
- World War II: The VAS 231-class submarine chasers were scuttled by the Germans after capturing them earlier in the month. (en)
- The landing craft infantry (large) was lost on this date. (en)
- The submarine chaser ran aground near Ardenza, Italy, and was wrecked. (en)
- World War II: The was bombed and sunk at Leros, Greece by Junkers Ju 88 aircraft of the Luftwaffe with the loss of 15 crew. Survivors were rescued by , and . (en)
- World War II: The 94% complete was scuttled by the Germans at Castellammare di Stabia. Raised and completed 1953–1955 and put in Italian Navy service as San Marco. (en)
- World War II: The transport ship was sailing from Piraeus to Argostoli to pick up Italian prisoners of war where she hit a mine south of Cephalonia and sank. There were no casualties. (en)
- The sank in the English Channel off Hastings after a collision with LCS-202 . There were no casualties. (en)
- World War II: The VAS 231-class submarine chaser was sunk by Allied aircraft off Salerno. (en)
- World War II: Convoy 3916: The Ryotoku-class auxiliary transport ship was torpedoed and sunk in the Surigao Strait, or about west of Urracas , northern Marianas by . (en)
- World War II: The was depth charged, shelled and sunk in the Coral Sea east of San Cristobal Island by and a United States Navy Consolidated PBY Catalina of Squadron VP-23. Lost with all 50 hands. (en)
- World War II: The passenger ship was torpedoed and sunk by British MTB 89 at the pier in Vlorë, Albania. (en)
- World War II: The tanker was sunk at Nantes during an American air raid. (en)
- World War II: The Marinefährprahm was sunk at Bastia by and . (en)
- World War II: Convoy ON 202: The Liberty ship was torpedoed and damaged in the Atlantic Ocean by and was abandoned by her crew. All 71 people on board were rescued by . Frederick Douglass was later torpedoed and sunk by . (en)
- World War II: The Fort ship was bombed and sunk in the Atlantic Ocean southwest of Cape Finisterre, Spain by Focke-Wulf Fw 200 aircraft of I Staffeln, Kampfgeschwader 40, Luftwaffe. (en)
- World War II: The Type R-2 minesweeper was sunk by a mine off Piran. (en)
- World War II: The submarine chaser was torpedoed and sunk in Syltefjorden by . 29 of her 42 crewmen were killed. (en)
- World War II: The Lursen E-boat was scuttled at Cattolica. (en)
- The patrol vessel foundered in a gale off of Nags Head, North Carolina. One crew was lost, 37 survived. (en)
- World War II: The barge was sunk in the Baltic Sea by , , , and while being towed by . (en)
- World War II: The was bombed and sunk at Genoa by Allied aircraft. (en)
- World War II: The was bombed and sunk off Salerno, Italy. (en)
- World War II: The supply ship was bombed and sunk at Nantes during an American Air raid. Raised in 1946, and scrapped in 1950 at Briton Ferry, Wales. (en)
- The was lost by grounding off Salerno, Italy. (en)
- The landing craft vehicle was lost on this date. (en)
- World War II: The was scuttled at La Spezia. (en)
- World War II: The was scuttled at Naples. (en)
- World War II: The was scuttled at Pola. (en)
- World War II: The was scuttled at Pula. (en)
- World War II: The was scuttled in Polensa Bay. (en)
- World War II: The was scuttled off Ancona. (en)
- World War II: The was sunk off Venice by , and . (en)
- World War II: The gunboat was sunk off Ancona by , and . (en)
- World War II: The VAS 201-class submarine chasers were scuttled at Bocca di Magra. (en)
- World War II: The submarine chaser was shelled and sunk at Piombino by German shore-based artillery. (en)
- World War II: Convoy No. 324: The Imperial Japanese Army transport was torpedoed and sunk in the Pacific Ocean by . 139 troops/passengers and one crew were killed. (en)
- World War II: The was depth charged and sunk in the Coral Sea off Espiritu Santo by . All 101 crew were killed. (en)
- World War II: The fishing trawler was sunk in the Mediterranean Sea by . Her crew were allowed to take to the lifeboats. (en)
- The minesweeper ran aground at Aberwrac'h, Finistère, France and was wrecked. (en)
- World War II: The was scuttled at La Spezia, Italy. (en)
- World War II: The was bombed and sunk off Vigo, Spain by German aircraft. (en)
- World War II: The MS 11-class E-boats were sunk at Stampalia by German aircraft. (en)
- World War II: The Marinefährprahm was sunk at Bastia by and . There was no casualty. (en)
- World War II: The Fairmile A motor launch was sunk by a mine in the English Channel. The whole crew was saved. (en)
- The Type VIIC submarine collided in the Baltic Sea north of Loba with the submarine and sank with the loss of five of her 43 crew. (en)
- World War II: The auxiliary minesweeping boat was sunk in the Black Sea by , , and . (en)
- World War II: The was shelled and sunk off Genoa by German artillery. (en)
- World War II: The was sunk by and and Italian tanks at Elba . (en)
- World War II: The submarine chaser was torpedoed and sunk by off Finnmark, Norway. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south of Mikura Jima by . Eight crewmen were killed. (en)
- World War II: The Sperrbrecher was sunk at Nantes during an American air raid. (en)
- WThe K-15/M-17-class river minesweeping launch was sunk on this date. (en)
- World War II: The sailing ship was shelled and sunk in the Mediterranean Sea south of Cape Gata, Cyprus by . All crew survived. (en)
- World War II: The was bombed, depth charged and sunk in the Sulu Sea west of Negros, Philippines by Japanese aircraft and Karatsu . (en)
- World War II: The cargo ship capsized and sank in an Allied air raid on Bastia, Corsica. (en)
- World War II: The cargo ship was lost in a collision with Signal off Trondheim, Norway whilst in a convoy. (en)
- World War II: The cargo ship was torpedoed and damaged in the Tyrrhenian Sea off Corsica by . She was declared a total loss. (en)
- World War II: The cargo ship was bombed and sunk off Wewak by American aircraft. (en)
- World War II: The was scuttled at La Spezia, Italy. Raised, repaired and put in Kriegsmarine service as UIT-16. (en)
- World War II: The was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as TA49. (en)
- The Type VIIC submarine sank in Danzig Bay in a diving accident with the loss of 37 of her 43 crew. (en)
- World War II: The torpedo boat was scuttled by her crew at Pola, Italy. She was refloated and repaired by the Germans and placed in service as Wildfang . (en)
- World War II: The Type R 17 minesweeper was sunk at Nantes during an American air raid. (en)
- World War II: Convoy ON 202: The Fort ship was torpedoed and sunk in the Atlantic Ocean by with the loss of one of her 53 crew. Survivors were rescued by and . (en)
- World War II: The Sperrbrecher was sunk at La Pallice during an American air raid. (en)
- World War II: The naval drifter/minesweeper struck a mine and sank in the North Sea off Ostend with the loss of two lives. (en)
- World War II: The cargo ship was torpedoed and sunk in the English Channel south west of Berck-sur-Mer by , , , . (en)
- World War II: The struck a mine and was beached off Crotone, Italy. (en)
- The sank in heavy weather in the Gulf of Alaska south of Kodiak, Territory of Alaska, at . (en)
- World War II: The VAS 231-class submarine chaser was sunk by gunfire from R-212 and R-215 off Gorgona Island. Contrammiraglio Federico Martinengo, commander of the Italian Navy ASW forces, was the only person killed in the action. (en)
- World War II: The was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as UJ 2227. (en)
- World War II: The minesweeper was torpedoed and sunk in the North Sea off IJmuiden, North Holland, Netherlands by Royal Navy motor torpedo boats. (en)
- World War II: The cargo ship was torpedoed and sunk in the East China Sea north of Formosa by . (en)
- World War II: Operation Jaywick: The Kizan Maru-class auxiliary transport was mined and sunk by Australian Commandos using limpet mines at Singapore. One crew member was killed. The wreck was broken up in July 1944. (en)
- World War II: The incomplete was sunk at dock in Split, Yugoslavia by Yugoslav Partizans. Later salvaged by the Germans. (en)
- World War II: Operation Jaywick: The Taiyei Maru-class auxiliary transport , being used as a tanker, was mined and sunk by Australian Commandos using limpet mines at Singapore . (en)
- World War II: The was sunk in the Mediterranean Sea off Sicily by a Bristol Bisley aircraft of 13 Squadron, Royal Air Force with all 49 hands. (en)
- World War II: The minesweeper was sunk at La Pallice, Charente-Maritime, France during an American air raid. (en)
- World War II: The cargo ship struck a mine and sank in Gulenfjord, Norway. She was raised the next day, repaired and returned to service. (en)
- World War II: Convoy ON 202: The cargo ship was torpedoed and sunk in the Atlantic Ocean by with the loss of eight of her 45 crew. Survivors were rescued by and . (en)
- World War II: The MAS 424-class MAS boat was scuttled at Toulon, Var, France. Raised, repaired and put into Kriegsmarine service as S 624. (en)
- World War II: The tug was sunk in the Baltic Sea by , , , and . (en)
- World War II: The torpedo boat was sunk in the Black Sea by German action off the Kuban coast. (en)
- The naval trawler sank in heavy weather off Townsville, Queensland, Australia. (en)
- World War II: The barge was sunk by a mine in the Black Sea. Raised, but not repaired. (en)
- World War II: Convoy VA 18: The cargo ship was torpedoed and sunk in the Kara Sea west of Russkij Island by with the loss of seventeen of her 42 crew. Survivors were rescued by . (en)
- World War II: The cargo ship was scuttled at Naples, Italy. Wreck raised in 1944 and scrapped. (en)
- World War II: The tanker was torpedoed and sunk in the Mediterranean Sea off Corsica by , and . (en)
- World War II: The struck a mine and sank in the Strait of Bonifacio. 223 crew were killed. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by a Handley Page Halifax aircraft of 58 Squadron, Royal Air Force with the loss of all 50 crew. (en)
- World War II: The MAS 423-class MAS boat was scuttled at Split, Yugoslavia. Raised, repaired and put into Kriegsmarine service as S 603. (en)
- World War II: The was shelled and sunk by German batteries at Trieste. (en)
- World War II: Convoy SA-12: The Kirishima Maru-class auxiliary oiler was torpedoed and sunk in the South China Sea by . 14 crew were killed. Her captain and 61 crew rescued by . (en)
- World War II: The Annan Maru-class auxiliary transport was bombed and sunk in the Indian Ocean south of Rangoon, Burma by Consolidated B-24 Liberator aircraft of the United States Tenth Air Force. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Hokkaido by . Survivors were rescued by . (en)
- World War II: The was sunk by in the Baltic Sea. Three crewmen were taken as prisoners of war. (en)
- World War II: Operation Jaywick: The tanker was mined and sunk by Australian Commandos using limpet mines at Singapore. One crewman was killed. She was raised, repaired, returned to service. (en)
- World War II: The Type VIIC submarine ran aground off Melilla, Spain whilst under attack by Lockheed Hudson aircraft of 48 and 233 Squadrons, Royal Air Force and Fairey Swordfish aircraft of 833 and 886 Squadrons, Fleet Air Arm. All 49 crew survived the attack. U-617 was shelled and sunk by and . (en)
- World War II: The auxiliary cruiser was sunk at Castiglioncello, Italy, by German ships. One crew was killed. (en)
- World War II: Convoy No. 192: The cargo ship was driven ashore and wrecked at Amami-O-Shima by a typhoon. (en)
- World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea off Corsica by . There were 38 dead and 21 survivors. (en)
- World War II: The corvette was scuttled at La Spezia, Italy. Raised, repaired and put in Kriegsmarine service as SG 23, later UJ-2231 . (en)
- World War II: The Liberty ship was bombed and sunk in the Mediterranean Sea off Salerno with the loss of 63 lives. She was subsequently salvaged and sunk as a blockship in June 1944. (en)
- World War II: The transport was bombed and sunk in the Paramushiro Strait by Consolidated B-24 Liberator and North American B-25 Mitchell aircraft of the United States Eleventh Air Force. Later salvaged. (en)
- The barque was damaged by ice and sank in the Atlantic Ocean off the southwest tip of Greenland. Her crew were rescued by . (en)
- World War II: The Mk 3 landing craft tank was sunk by coastal gunfire during the landing at Salerno. Three of the troops above were killed. (en)
- World War II: The MS 51-class MS boat was scuttled at Bocche di Marga. Raised, repaired and put in Kriegsmarine service as SA 4. (en)
- World War II: The MS 11-class MS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as SA 3. (en)
- World War II: The incomplete , only 84% finished, was scuttled in Zaule Bay near Trieste. Raised by the Germans. (en)
- World War II: The gunboat, a former was scuttled at Shanghai, China. Raised, repaired and put in Imperial Japanese Navy service as Okitsu. (en)
- The submarine chaser/naval whaler was lost on this date. (en)
- World War II: The naval trawler struck a mine and sank in the Thames Estuary with the loss of all eleven crew. (en)
- World War II: The MS 11-class MS boat was scuttled at Viareggio. (en)
- The transport ship was sunk in a collision with in the Sea of Japan south of Sado Island . Her whole crew was rescued by Maoka Maru. (en)
- World War II: The night fighter direction vessel was torpedoed and sunk in the Mediterranean Sea northeast of Isola di Capraia by . Five crewmen killed, eleven wounded. Survivors were rescued by and . (en)
- World War II: The was bombed and sunk off Salerno by a Luftwaffe aircraft. (en)
- World War II: The cargo ship was torpedoed and sunk in the Baltic Sea off Ventspils, Latvia by a Soviet Ilyushin Il-4 aircraft. (en)
- World War II: The corvette was scuttled at Livorno. She was scrapped in 1946. (en)
- World War II: The was lost as cargo aboard when she was sunk at Ajaccio, Corsica, France. There were no casualty. (en)
- World War II: The cargo ship was torpedoed and sunk in the North Sea off the Kvassheim Lighthouse by Bristol Beaufighter aircraft of 489 Squadron, Royal New Zealand Air Force. All crew survived. (en)
- World War II: The tanker was shelled and sunk in the South Pacific Ocean by while bounded from Talara, Peru to Sydney, Australia. Forty-one crewmen were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Honshu by the submarine . (en)
- The auxiliary stores ship disappeared without a trace with her 24 crew between Kusai and Nauru, possibly a maritime hazard. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by a Consolidated B-24 Liberator aircraft of 10 Squadron, Royal Canadian Air Force with the loss of all 50 crew. (en)
- World War II: The Type B submarine was sunk off Espiritu Santo by . (en)
- World War II: The VAS 231-class submarine chaser was scuttled at Portovenere. Raised, repaired and put into Kriegsmarine service as RA 261. (en)
- World War II: The VAS 205-class submarine chaser was scuttled by the Germans off Ischia Island after capturing her earlier in the month. She was raised post-war, repaired and returned to service. (en)
- World War II: The VAS 231-class submarine chaser was sunk by a Kriegsmarine Marinefährprahm off Civitavecchia. (en)
- World War II: The Katsura Maru No. 2 Go-class auxiliary fleet replenishment ship was torpedoed and sunk in the Pacific Ocean by . Five crewmen were killed. (en)
- World War II: The tanker was torpedoed and sunk in the Pacific Ocean south of Honshu by . (en)
- World War II: The Liberty ship was torpedoed and sunk in the Gulf of Aden south east of Aden by with the loss of 2 crew. The 58 survivors were rescued by and a seaplane. (en)
- World War II: The minesweeper struck a mine and sank in the English Channel. (en)
- The landing craft infantry (large) was lost in September. (en)
- World War II: Convoy ON 202: The Liberty ship was torpedoed and sunk in the Atlantic Ocean south west of Iceland by with the loss of 12 gunners and 20 crewmen. Survivors were rescued by . (en)
- World War II: The R boat tender, a converted Type 1916 minesweeper, was torpedoed and sunk in the English Channel southwest of Berck-sur-Mer, Pas-de-Calais, France, when here convoy was attacked by Dutch and British MTB and SGB. 23 crew were killed. (en)
- World War II: The MS 11-class E-boat was scuttled at Gatea. (en)
- World War II: The naval trawler was torpedoed and sunk in the North Sea off Harwich by with the loss of all 15 crew. (en)
- World War II: The G-class destroyer was bombed and sunk at Leros by Junkers Ju 88 aircraft of the Luftwaffe with the loss of 72 of her 145 crew. Survivors were rescued by , and . (en)
- World War II: The MAS 501-class MAS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as S 508. (en)
- thumb|USS Savannah.
World War II: Operation Avalanche: The was struck by a Fritz X bomb and severely damaged with the loss of 197 of her 868 crew. She sailed to Malta for temporary repairs. After permanent repairs in the United States, she re-entered service in September 1944. (en)
- World War II: Convoy ON 202: The was torpedoed and sunk in the Bay of Biscay by with the loss of 68 of her 149 crew. The 81 survivors were rescued by , but 80 of them would be killed the next day when that ship was sunk by . (en)
- World War II: The struck a mine and sank at Taranto, Apulia, Italy with the loss of 151 of the 276 people on board. (en)
- World War II: The cargo ship was torpedoed and sunk by off Bastia, Corsica. (en)
- World War II: The Liberty ship was bombed and set on fire at Salerno, Italy, by a German Glide Bomb dropped by a Luftwaffe aircraft with the loss of seven lives. She blew up and sank the next day. (en)
- World War II: The Type 1939/40 E-boat was sunk in the Black Sea off Feodosia, Soviet Union during a Soviet air attack when strafing detonated one of her torpedoes. Two crew were killed. (en)
- World War II: The Type R-41 minesweeper was sunk by a mine off Dunkerque. (en)
- World War II: The fishing vessel was sunk in Aléria, Corsica by gunfire from (en)
- World War II: Convoys ONS 18/ON 202: The cargo ship was torpedoed and sunk in the Atlantic Ocean by . All 66 crew were rescued by and . (en)
- World War II: The tugboat was sunk by a German mine off Taranto. They were 97 dead and 51 survivors. (en)
- World War II: The RD-class minesweeper was scuttled at Viareggio. (en)
- World War II: Convoys ONS 18/ON 202: The was torpedoed and sunk in the Atlantic Ocean by with The loss of all but one of her crew. (en)
- World War II: The cargo ship struck a mine and sank in the Kara Sea with the loss of two crew. (en)
- World War II: The cargo ship was bombed and sunk in the Adriatic Sea off Santi Quaranta, Albania (en)
- World War II: Operation Avalanche: The was torpedoed and sunk in the Mediterranean Sea off Salerno, Italy by a Kriegsmarine E-boat with the loss of 202 of her 273 crew. (en)
- World War II: The was torpedoed and sunk in the Gulf of Salerno by with the loss of 72 of her 103 crew. Survivors were rescued by . (en)
- World War II: The auxiliary minesweeper was torpedoed and sunk in the Adriatic Sea by and . (en)
- World War II: The coaster was scuttled by partisans at Split to prevent capture by the Germans. Raised by Yugoslavia in November 1944, repaired and returned to service in 1945 as Knin. (en)
- World War II: The E-boat was rammed and damaged in the North Sea off the Sunk Lightship by and and was abandoned. Thirteen crew were rescued by HMML 145 and taken as prisoners of war. (en)
- World War II: The minesweeper, a converted Heilbutt-class patrol ship, was torpedoed and sunk in the Mediterranean Sea east of Bastia by . (en)
- World War II: The was torpedoed and sunk off Salerno by . (en)
- World War II: The cargo ship was sunk in the Aegean Sea by , and . (en)
- World War II: The torpedo boat was scuttled at La Spezia. (en)
- World War II: The Type C2 Marinefahrprahm was scuttled off Taranto, Italy, after an Italian cruiser was seen and the whole crew was rescued by and . (en)
- World War II: The lighter was torpedoed and sunk in the Black Sea by . (en)
- World War II: Convoy Wewak No. 7: The Daifuku Maru No. 1-class transport was bombed and sunk at Wewak by North American B-25 Mitchell and Lockheed P-38 Lightning aircraft of the United States Army Air Force. Three troops and two crew killed. (en)
- World War II: The barge was sunk by mines in the Tuganrog Gulf. 182 crew and passengers killed. (en)
- World War II: The submarine chaser/naval whaler was shelled and damaged in the Bay of Stampalia by , and . She was scuttled by her crew at . (en)
- World War II: The auxiliary minesweeper was sunk in the English Channel off Fécamp, Seine-Inférieure, France by , and . (en)
- World War II: The was scuttled at Fiume, Italy. Raised, repaired and put into Kriegsmarine service as TA44. (en)
- World War II: The cargo ship, chartered by the Kriegsmarine, was torpedoed in the Riga Bay by Soviet Ilyushin Il-4 aircraft. Six crew were killed. She was towed to Riga and repaired. (en)
- World War II: The was torpedoed and sunk in the Mediterranean Sea east of Europa Point, Gibraltar by with the loss of 62 of her 191 crew. (en)
- World War II: The Type A Marinefahrprahm was heavily damaged by Soviet aircraft in Kerch. She was not repaired and finally scuttled in November 1943. There were no casualties. (en)
- The landing craft, personnel (ramped) was lost on this date. (en)
- World War II: The heavy gun carrier was sunk by Soviet bombers in the Baltic Sea. (en)
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