| dbp:desc
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- 0001-03-08 (xsd:gMonthDay)
- 0001-03-09 (xsd:gMonthDay)
- 0001-03-12 (xsd:gMonthDay)
- 0001-03-16 (xsd:gMonthDay)
- 0001-03-20 (xsd:gMonthDay)
- 0001-03-21 (xsd:gMonthDay)
- 0001-03-23 (xsd:gMonthDay)
- 0001-03-26 (xsd:gMonthDay)
- 0001-04-14 (xsd:gMonthDay)
- 0001-04-30 (xsd:gMonthDay)
- 0001-05-03 (xsd:gMonthDay)
- 0001-05-18 (xsd:gMonthDay)
- 0001-06-14 (xsd:gMonthDay)
- 0001-08-03 (xsd:gMonthDay)
- 0001-08-31 (xsd:gMonthDay)
- The G-5-class motor torpedo boat was lost on this date. (en)
- The K-15/M-17-class river minesweeping launch was sunk on this date. (en)
- The MFP-A landing craft was sunk on this date. (en)
- The MFP-C2 landing craft was sunk on this date. (en)
- The Vorpostenboot was lost on this date. (en)
- The auxiliary guard ship was lost on this date. (en)
- The auxiliary minesweeper was lost on this date. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south of Honshu by . (en)
- The D-3-class motor torpedo boat was lost on this date. (en)
- World War II: The auxiliary gunboat was torpedoed and sunk in the Pacific Ocean south of Honshu by . (en)
- World War II: The coaster was torpedoed and sunk in the Yellow Sea by . (en)
- The MFP-D landing craft was sunk on this date. (en)
- The auxiliary patrol ship 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 cargo ship was torpedoed and sunk in the Java Sea by . (en)
- World War II: The cargo ship was sunk by a mine in the Skagerrak off Nidingen. (en)
- World War II: Convoy HI-88J: The tanker was torpedoed and damaged in the South China Sea off Nha Trang near Hon Doi Islet by . 5 gunners and 44 crewmen were killed. rescued 6 crewmen and rescued 15 crewmen. The abandoned vessel drifted ashore on Hon Doi Islet . The next day Bluegill torpedoed the ship again starting an inferno that burned out the ship. (en)
- World War II: The coaster was either torpedoed and sunk in the North Sea by a Kriegsmarine Seehund midget submarine, or foundered in a storm. (en)
- The 33-gross register ton, scow sank in Prince William Sound on the south-central coast of the Territory of Alaska. (en)
- World War II: The ocean liner struck a mine and sank in the Baltic Sea off the Gedser Lightship off Warnemünde, Mecklenburg-Western Pomerania. The whole crew was saved. She was salvaged c. 1949 and returned to service by the Soviet Union. (en)
- World War II: The Type VIIC submarine was bombed and sunk at Bremen by United States Army Air Force aircraft. (en)
- World War II: The steamer and four barges were sunk in the Danube River by German assault craft. (en)
- World War II: The Type R-218 minesweeper was sunk off Palanga, Lithuania by Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The patrol boat was sunk in the Gulf of Boni off Maniang Island, Celebes by Consolidated B-24 Liberator aircraft of the United States Thirteenth Air Force. Sixty-nine crewmen were killed, nine were wounded. (en)
- World War II: The cargo ship was bombed and sunk at Menstad by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, RAF. (en)
- The landing craft assault was lost sometime in March. (en)
- World War II: The cargo ship was sunk in an American air raid on Bremen. (en)
- World War II: The oiler was sunk in Tourane Bay, French Indochina in the South China Sea by United States 5th Air Force North American B-25 Mitchell aircraft of the 500th Bomb Squadron, 345th Bomb Group. (en)
- World War II: The cargo ship was torpedoed and sunk in the North Sea off St Abb's Head, Berwickshire, United Kingdom by with the loss of ten of her 21 crew. Survivors were rescued by . (en)
- World War II: Convoy HI-88I: The tanker was torpedoed and sunk in the South China Sea south of Cam Rahn Bay, French Indochina by . A total of 170 passengers, eight gunners, and eighteen crewmen were killed. (en)
- The cargo ship was lost in a tropical cyclone in the Coral Sea off Port Douglas, Queensland, Australia with thirteen of 85 crew members rescued. (en)
- World War II: The Type 35 torpedo boat struck a mine and sank in the Baltic Sea off Hela, Danzig-West Prussia with the loss of 300 lives. (en)
- World War II: The auxiliary submarine chaser was torpedoed and sunk in the Strait of Malacca by . (en)
- The decommissioned S-class submarine was sunk as a target in of water in the Atlantic Ocean off Cape Elizabeth, Maine. (en)
- World War II: The incomplete Type 1942 destroyer was sunk in a British air raid on Bremen. (en)
- World War II: The cargo ship was sunk in a British and Canadian air raid on Hamburg. She was raised in 1948, repaired the next year and sailed until 1962. (en)
- World War II: The Type XXI submarine was severely damaged in an American air raid on Hamburg. Construction was abandoned. (en)
- World War II: Convoy ONA 289: The cargo ship was torpedoed and sunk in the English Channel off Fécamp, Seine-Inférieure, France by . All 48 crew were rescued by and . (en)
- World War II: The cargo ship was bombed and sunk by aircraft at Stettin, Pomerania. Raised in 1950–55 and taken into service until scrapped in 1969. (en)
- World War II: The was sunk by a mine in Wakamatsu Harbour. Later raised but not repaired. (en)
- The collier was bombed and sunk as a target in Chesapeake Bay. (en)
- World War II: The vessel was sunk in the Pacific Ocean south of Kyushu by . (en)
- World War II: The naval trawler was torpedoed and sunk in the Atlantic Ocean off Reykjavík, Iceland by with the loss of 25 of her 26 crew. (en)
- World War II: The No.28-class submarine chaser was torpedoed and sunk in the Andaman Sea east of Khota Andaman by . (en)
- World War II: The Type VIIC submarine was bombed and sunk at Wilhelmshaven by United States Army Air Force aircraft. (en)
- World War II: The was scuttled by in the Mekong River at My Tho. (en)
- World War II: The coaster struck a mine and sank in the Baltic Sea off Cape Arkona, Rügen. (en)
- World War II: The patrol ship was sunk by Soviet Douglas A-20 Havoc aircraft in the Baltic Sea. (en)
- The self-propelled covered lighters were lost off the Farallon Islands in heavy weather. (en)
- World War II: The accommodation ship was sunk in an American air raid on Stettin, Pomerania. (en)
- World War II: The was holed in the engine room when she struck a submerged wreck. She was driven ashore on Iwo Jima and abandoned. (en)
- World War II: The cargo ship was bombed and sunk at Egersund, Norway in an Allied air raid. She was raised post-war, repaired and entered Norwegian service as Strømsøy. (en)
- World War II: Convoy SAYU-02: The auxiliary submarine chaser was lost on this date. (en)
- The KSK-2-class naval drifter/submarine chaser was wrecked on this date. (en)
- World War II: The cargo ship struck a mine and sank in the Bay of Kiel. Raised and repaired in 1949. (en)
- World War II: The was torpedoed and sunk in the East China Sea off Aguni Island, Okinawa by with all 225 hands. (en)
- World War II: The Type J3 submarine was depth charged, shelled and sunk in the Pacific Ocean off Okinawa by and with the loss of 99 of her 100 crew. The survivor was rescued by USS Morrison. (en)
- World War II: The Marinefährprahm was sunk in the Kattegat by de Havilland Mosquito aircraft of 235 and 248 Squadrons, Royal Air Force. (en)
- World War II: The Type VIIC submarine struck a mine and sank in the Atlantic Ocean south of Ireland. All 48 crew survived. (en)
- World War II: The cargo ship sunk by Soviet Douglas A-20 Havoc aircraft or struck a mine and sank in the Baltic Sea off the Hel Peninsula, Pomerania. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the North Sea off Eyemouth, Berwickshire, United Kingdom by and with the loss of all 50 crew. (en)
- World War II: The was scuttled at Davao, Philippines in late March. (en)
- World War II: The Liberty ship struck a mine and sank in the North Sea off the coast of Belgium . (en)
- World War II: The naval trawler/submarine chaser was bombed and sunk by Allied aircraft in the Skagerrak. (en)
- World War II: The Type R-2 minesweeper was sunk at Monfalcone, Giulia, Italy by Allied aircraft. (en)
- World War II: The patrol ship was sunk by Soviet aircraft at Stolpmünde. (en)
- World War II: The was sunk in an Allied air raid on Venice, Italy. (en)
- World War II: The auxiliary guard ship was sunk by United States aircraft east of the Ryukyus . (en)
- World War II: The gunboat was scuttled at Can Tho, French Indochina. Raised and scrapped 1957. (en)
- World War II: Convoy SA-11: The transport was sunk in the Pacific Ocean off Miyako Jima by United States Navy aircraft from Task Force 38. Four crewmen were killed. (en)
- World War II: The cargo ship was bombed and sunk at Ålesund, Norway, by de Havilland Mosquito aircraft of 143, 235, 248, and 333 Squadrons, Royal Air Force. (en)
- World War II: The was sunk on the Yangtze River north of Kiangyin, China by a mine. Eight crewmen were lost. (en)
- World War II: The cargo ship was bombed and sunk at Ålesund, Norway by de Havilland Mosquito aircraft of 143, 235, 248, and 333 Squadrons, Royal Air Force. (en)
- World War II: Convoy FS 1759: The cargo ship was torpedoed and sunk in the North Sea by a Kriegsmarine Schnellboot. One crew was killed. (en)
- World War II: The cargo ship was scuttled at Lido di Venezia, Italy. The wreck was scrapped in 1946. (en)
- World War II: Convoy HI-88J: The Type D escort ship was torpedoed and sunk in the South China Sea 20 miles north north east of pointe An Yo by . Six survivors and all of her 191 crewmen were killed. Some survivors were rescued by . (en)
- World War II: The Type XXI submarine struck a mine and sank in the Baltic Sea off Warnemünde with the loss of 75 of the 78 people aboard . (en)
- World War II: Convoy JW 65: The sloop was torpedoed and sunk in the Kola Inlet by with the loss of 168 of her 229 crew. Survivors were rescued by . (en)
- World War II: The torpedo boat was sunk in an American air raid on Wilhelmshaven, Germany. (en)
- World War II: Convoy SAYU-02: The auxiliary submarine chaser was sunk by United States 5th Air Force B-25 Mitchell aircraft off French Indochina . (en)
- World War II: The Vorposteboot was sunk in an American air raid on Swinemünde. (en)
- World War II: The hospital ship was bombed and sunk in a RAF Bomber Command air raid on Saßnitz, Mecklenburg-Western Pomerania with the loss of 353 lives. (en)
- World War II: The auxiliary submarine chaser was sunk by Consolidated B-24 Liberator aircraft off Makassar. (en)
- World War II: The cargo ship was torpedoed and sunk in the Baltic Sea, south of Bornholm, Denmark , by the submarine with the loss of two lives. (en)
- World War II: The coaster was sunk in an American air raid on Hamburg. (en)
- World War II: The target ship was bombed and sunk at Hamburg by American aircraft. Raised post-war, repaired and returned to Norwegian service in May 1948. (en)
- World War II: The Fairmile D motor torpedo boat struck a mine and sank in approach to Maknare Channel, Adriatic Sea. Two crew were killed and one died of wounds. (en)
- World War II: The was sunk in the Pacific Ocean south west of Shikoku by . All 216 crewmen were killed. (en)
- World War II: Convoy HI-88I: The tanker was torpedoed and sunk in the South China Sea south of Cam Rahn Bay by . Fourteen crewmen were killed. (en)
- World War II: Convoy FS 1759: The cargo ship was torpedoed and sunk in the North Sea off Lowestoft, Suffolk by a Kriegsmarine Schnellboot. 20 crew and 1 gunner were killed. (en)
- World War II: The cargo ship was sunk by United States Army Air Forces Consolidated B-24 Liberator aircraft of the United States Fifth Air Force off the north coast of Formosa . Three crew died. (en)
- World War II: The Type 1935 minesweepers were sunk in an American air raid on Kiel, Schleswig-Holstein. (en)
- World War II: The landing craft personnel (ramped) was lost in the Eastern Theatre. (en)
- World War II: The MFP-D Type Artilleriefährprahm was scuttled near Hanau, Germany. (en)
- World War II: The was sunk in a RAF Bomber Command air raid on Saßnitz. 150 crewmen died. (en)
- World War II: The Type VIIC submarine struck a mine and sank in the Baltic Sea near Hela with the loss of all 50 crew. (en)
- The Type 1916 minesweeper sank during a storm in the Little Belt. 43 crew who died were buried in Sweden. (en)
- World War II: The struck a mine and sank in the Pacific Ocean off Hagushi Bay, Okinawa , with the loss of five of her 105 crewmen. Survivors were rescued by the high-speed minesweeper . (en)
- World War II: The cargo ship struck a mine and sank in the Baltic Sea off Warnemünde, Pomerania, Germany. (en)
- World War II: The Type VIIc submarine was bombed and sunk at Hamburg in an American air raid. She was later scrapped. (en)
- World War II: The transport ship was torpedoed and sunk in the East China Sea by . (en)
- World War II: The transport was sunk in the South China Sea east of Swatow by Consolidated B-24 Liberator aircraft of the United States Fifth Air Force. Fifteen crewmen, nineteen guards and eight passengers were killed. (en)
- World War II: The cargo ship was bombed and sunk in the Baltic Sea by Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The Type XXI submarine was bombed and sunk at Wilhelmshaven, Lower Saxony in an Allied air raid. She was subsequently raised. (en)
- World War II: The Type D escort ship was sunk in the South China Sea east of Swatow, China by North American B-25 Mitchell aircraft of the 341st Bomb Group, United States Fourteenth Air Force. One hundred and seventy-five crewmen were killed. (en)
- World War II: The cargo ship struck a mine and sank, or sunk by Soviet A-20 Havocs, in the Gulf of Danzig. (en)
- World War II: The was sunk off Nha Trang, French Indochina in the South China Sea by North American B-25 Mitchell aircraft of the 345th Bomb Group, United States Fifth Air Force. The captain and seven crewmen were killed. There were 222 wounded. (en)
- World War II: Convoy KATA-604: The transport was sunk in Kuji Bay, Amami Ōshima by United States Navy aircraft from Task Force 38. Lost on board were 82 IJA Explosive Motor Boats. (en)
- World War II: The cargo ship was torpedoed and sunk in the Norwegian Sea off Namsos, Norway by . (en)
- World War II: The hospital ship was being used as a troopship against the rules of war. She was bombed and sunk at Pillau, East Prussia by Soviet Air Force aircraft with the loss of 24 of the 300 people on board. (en)
- World War II: Convoy KATA-604: The transport was sunk in Kuji Bay, Amami Ōshima by United States Navy aircraft from Task Force 38. Sixty passengers and two crewmen were killed. (en)
- World War II: The Type 1940 minesweeper was bombed and sunk by aircraft at Kiel, Schleswig-Holstein. Later scrapped. (en)
- The KSK-2-class naval drifter/submarine chaser was destroyed on this date. (en)
- World War II: The was sunk in the Gulf of Tonkin by Japanese aircraft. Raised, repaired and returned to service post war. (en)
- World War II: The submarine chaser was bombed and sunk at Egersund in an Allied air raid. She was raised post-war. (en)
- The decommissioned Barracuda-class submarine was sunk by a Mark 24 Fido acoustic homing torpedo southeast of Block Island off the coast of Rhode Island in of water for use as a sonar target. (en)
- World War II: The patrol boat struck a mine and sank in the Baltic Sea off Kolberg. (en)
- World War II: The minesweeper was torpedoed and sunk in the Baltic Sea off Liepāja, Latvia by Soviet aircraft. (en)
- World War II: The tug struck a mine and sank in the Baltic Sea off Warnemünde, Mecklenburg-Western Pomerania. Only 7 of her 26 crew were saved. (en)
- World War II: The fishing ship was torpedoed and sunk in the Pacific Ocean south of Kyushu by . 19 crew and 2 gunners died. (en)
- World War II: Convoy HI-94: The Hario-class fleet oiler struck a mine in Yulinakin Bay off Cape Bastion, Hainan Island, China . She sank the next day. (en)
- The auxiliary minesweeper sank in Madang Harbour New Guinea. (en)
- World War II: The cargo ship struck a mine and sank in the Kattegat off Sjællands Odde, Denmark. (en)
- World War II: Convoy SA-11: The oiler was sunk in the Pacific Ocean by United States Navy aircraft from Task Force 38. Seventeen crewmen were killed. (en)
- World War II: The landing craft personnel struck a mine and sank in the North Sea. (en)
- World War II: The target ship was scuttled as a block ship in Gotenhafen. (en)
- World War II: The Type IXD/42 submarine was sunk in an American air raid on Bremen. (en)
- thumb|USS Frankin
World War II: The was bombed and severely damaged in the Pacific Ocean off Honshu, Japan by an Imperial Japanese Navy aircraft with the loss of at least 724 crew. Survivors were rescued by . (en)
- World War II: The Type C escort ship was sunk in the Pacific Ocean south west of Shikoku by United States Navy aircraft from Task Force 58. All 170 crewmen were lost. (en)
- The Type RD 101 minesweeper was sunk on this date. (en)
- World War II: The patrol vessel was scuttled at Along Bay, French Indochina. (en)
- World War II: Convoy HI-88J: The tanker was strafed, bombed and sunk in the South China Sea off Nha Trang, French Indochina by North American B-25 Mitchell aircraft of the 500th bomb Squadron, United States Fifth Air Force. Twelve passengers, four gunners and nineteen crewmen were killed. (en)
- The S-class submarine was scuttled as an ASDIC target off the Isle of Arran, Scotland. (en)
- World War II: The Vorpostenboot was sunk by Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The Project 1125-class armored motor gunboat was sunk near Esztergom while supporting a landing operation. (en)
- World War II: The cargo ship struck a mine and sank in the Baltic Sea off the Swedish coast. (en)
- World War II: The Liberty ship struck a mine and sank in the North Sea off Ostend, West Flanders, Belgium . (en)
- World War II: The Type C Kō-hyōteki-class midget submarines were scuttled at Talisay, Cebu, Philippines. (en)
- World War II: The cargo ship was bombed and sunk at Menstad, Norway by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. Raised post-war, repaired and returned to service in 1948. (en)
- The Vorpostenboot, a former UZ 1-class submarine chaser, was lost on this date. (en)
- World War II: The Type R-130 minesweeper was sunk off Liepāja, Latvia by Soviet Ilyushin Il-2 aircraft. (en)
- World War II: The sloop was damaged in the North Sea by a Kriegsmarine Seehund midget submarine. She was taken in to Harwich, Essex but was declared a constructive total loss. (en)
- World War II: The was scuttled at Haiphong, French Indochina. (en)
- World War II: Convoy HI-88J: The Type D escort ship was strafed, bombed and sunk in the South China Sea 35 miles off Cap Batangan, French Indochina by North American B-25 Mitchell aircraft of the 498th and 501st Bomb Squadrons, United States Fifth Air Force. One hundred and eighty four crewmen including her commanding officer were killed. (en)
- The midget submarine collided with a Royal Navy boom defence vessel in Loch Striven with the loss of two of her four crew. (en)
- World War II: Convoy KANA-304: The cargo ship was sunk in the East China Sea southeast of Shanghai, China by United States Navy aircraft from Task Force 58 with the loss of 668 lives. (en)
- World War II: Convoy HI-88G: The oiler was bombed and sunk in Linkao Bay, Hainan Island . Two passengers, two gunners and 27 crewmen were killed. (en)
- World War II: Convoy TAMO-49: The Peking Maru-class auxiliary transport ship was sunk in the South China Sea off Fuchow , China, by the submarine . All 411 passengers, 32 gunners, and 60 crew were lost. (en)
- World War II: Convoy SC 167: The cargo ship was torpedoed and damaged in the Bristol Channel by . All 36 crew were rescued by , which scuttled the ship. (en)
- World War II: Convoy BTC 103: The Liberty ship was torpedoed and damaged in the English Channel off Plymouth, Devon, United Kingdom by . She was beached at Whitesand Bay but declared a constructive total loss. All 69 crew survived. (en)
- World War II: Convoy KATA-604: The supply ship was sunk in Kuji Bay, Amami Ōshima by United States Navy aircraft from Task Force 38. (en)
- World War II: The cargo ship was bombed and sunk at Menstad, Norway by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. Raised post-war, repaired and returned to service. (en)
- The Liberty ship was wrecked on the coast of New Guinea . (en)
- World War II: The Type 1935 minesweeper was sunk near Lorient by American artillery fire. (en)
- World War II: Convoy TBC 102: The Liberty ship was torpedoed and sunk in the Atlantic Ocean off Lizard Head, Cornwall, United Kingdom by . All 75 crew were rescued by and a Royal Air Force rescue launch. (en)
- World War II: The incomplete M 1940-class minesweeper was destroyed on the stocks at Memel, East Prussia. (en)
- World War II: Convoy HI-88I: The auxiliary submarine chaser was torpedoed and sunk in the South China Sea south of Cam Rahn Bay by . (en)
- World War II: The minesweeper struck a mine and sank in the Baltic Sea off Kolberg, Pomerania. (en)
- World War II: Convoy KATA-504: The tanker was sunk in the East China Sea off Noma Misaki by United States Navy aircraft from Task Force 58. (en)
- World War II: The minesweeper was torpedoed and sunk in the Baltic Sea off Liepāja by Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The cargo ship struck a mine and sank in the Scheldt, Belgium. There were no casualty. (en)
- World War II: The coaster was bombed and damaged at Egersund, Norway in an Allied air raid. She was beached on fire and was later condemned as a total loss. Two men, the captain and the pilot, were killed. She was raised in 1945 and converted as a barge. (en)
- World War II: The stores vessel was scuttled at Vinh Long, French Indochina. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north of Scotland by and . (en)
- World War II: The was sunk in the Ligurian Sea west of Corsica by and . (en)
- World War II: Convoy MOTA-43: The transport was torpedoed and sunk in the East China Sea north-north-east of Shanghai by . A total of 928 passengers, 51 gunners and 139 crewmen were lost. One hundred and thirty survivors were rescued by and . (en)
- World War II: The transport was sunk in the Pacific Ocean off Miyako Jima by United States Navy aircraft from Task Force 38. Twenty passengers and sixteen crewmen were killed. (en)
- World War II: The submarine chaser was sunk by Soviet aircraft in the Baltic Sea. (en)
- World War II: The auxiliary gunboat was torpedoed and sunk in the Pacific Ocean south of Kyushu by . (en)
- The T2 tanker was wrecked near Eniwetok Atoll, Marshall Islands. She was on a voyage from San Pedro to the Eniwetok Atoll. (en)
- The S-class submarine was scuttled as an ASDIC target off the Isle of Arran, Scotland. (en)
- World War II: The Vorpostenboot was sunk in the Kattegat by de Havilland Mosquito aircraft on 235 and 248 Squadrons, Royal Air Force. (en)
- World War II: The cargo ship was bombed and sunk by Allied aircraft at Hamburg. (en)
- World War II: The transport was sunk off Kuji Bay, Amami ŌŌshima by United States Navy aircraft from Task Force 38. Two gunners were killed. (en)
- World War II: The coastal tanker was torpedoed and sunk in the Baltic Sea off Liepāja by Soviet Douglas A-20 Havoc aircraft. (en)
- World War II: The Este-class submarine chaser was sunk in a RAF Bomber Command air raid on Saßnitz. (en)
- World War II: The minesweeper was sunk in an American air raid on Kiel. (en)
- World War II: The coaster was sunk in an American air raid on Wilhelmshaven, Lower Saxony. (en)
- World War II: Convoy SAYU-02: The auxiliary submarine chaser was sunk by United States 5th Air Force North American B-25 Mitchell aircraft off French Indochina . (en)
- World War II: The incomplete MAL 2 type landing fire support lighter was sunk at Krupp Shipyard, Rheinhausen. (en)
- World War II: The cargo ship was sunk in an American air raid on Swinemünde. (en)
- World War II: Convoy HI-88G: The oiler was bombed and sunk off Yulin, Hainan Island. Twenty-nine passengers and seven crewmen were killed. (en)
- World War II: The cargo ship was sunk in the Baltic Sea off Pillau, East Prussia, Germany by Soviet Ilyushin Il-2 aircraft. (en)
- World War II: Convoy FS 1753: The auxiliary minesweeping trawler was torpedoed and sunk in the North Sea off Dundee, Perthshire, United Kingdom by with the loss of six of her 23 crew. Survivors were rescued by . (en)
- World War II: The D-3-class motor torpedo boat was shelled and sunk in the Baltic Sea by . (en)
- World War II: The cargo ship struck a mine and sank in the North Sea off Florø, Norway. (en)
- World War II: The Type 35 torpedo boat struck a mine and sank in the Baltic Sea off Hela, Danzig-West Prussia with the loss of 20 lives. (en)
- World War II: The Type R-218 minesweeper was sunk in a British air raid on Hamburg. (en)
- World War II: The torpedo boat was sunk in the Ligurian Sea north west of Corsica, France by and . (en)
- World War II: The minelayer, originally a , was strafed in the East China Sea southwest of Kagoshima by Grumman F6F Hellcat aircraft of the United States Navy and was fatally damaged when her depth charges were detonated, sinking later in the day. Forty-four survivors were rescued later by a passing convoy. (en)
- World War II: The was shelled and sunk in the Strait of Malacca by and . There were 108 survivors. (en)
- World War II: The cargo ship was bombed and sunk off Kristiansand, Norway by Handley Page Halifax aircraft of 502 Squadron, Royal Air Force. (en)
- World War II: The No.28-class submarine chaser was shelled and sunk in the Andaman Sea east of Khota Andaman by and . (en)
- World War II: The Vorpostenboot was torpedoed and sunk north of Stolpmünde by with the loss of 76 lives. (en)
- World War II: The cargo ship was sunk in an Allied air raid on Hamburg. (en)
- World War II: The minelayer, originally built as a , was sunk in the South China Sea off Nha Trang by North American B-25 Mitchell aircraft of the 345th Bomb Group, United States Fifth Air Force. (en)
- The KSK-2-class naval drifter/Vorpostenboot was lost on this date. (en)
- World War II: The A Type Marinefährprahm was sunk by an air attack off Storvik, Norway. (en)
- World War II: The was sunk in the Pacific Ocean off Naha, Okinawa by United States Navy aircraft from Task Force 38. (en)
- World War II: The landing craft carrier hit a mine off Dieppe and sank the next morning. Nine crew were killed. (en)
- The MFP-D Type Artilleriefährprahm was sunk on this date. (en)
- World War II: The Type VIIC submarine was destroyed at Hamburg in an American air raid. (en)
- World War II: The Kaichū VII type submarine was depth charged, rammed and sunk in the Pacific Ocean by with all 82 hands. (en)
- World War II: The was shelled and set on fire by Japanese forces, and then scuttled by her crew in the Mekong River at Kratie, French Indochina. (en)
- World War II: The K-18-class river minesweeping launch was sunk by German artillery on the Danube near Esztergom. (en)
- World War II: The training ship struck a mine and sank in the Baltic Sea off Fehmarn with the loss of 5 lives. (en)
- World War II: The submarine was sunk in an Allied air raid on Monfalcone. (en)
- World War II: The incomplete KSK-class naval trawlers were sunk in an American air raid on Swinemünde at the Burmester Shipyard. (en)
- The landing craft mechanized was lost in the Mediterranean Sea. (en)
- World War II: The Type XXI submarine was sunk in an American air raid on Wilhelmshaven. (en)
- World War II: The Type 1939/40 Schnellboot was sunk by in the North Sea. Three crewmen were killed. (en)
- The cargo liner foundered in the Atlantic Ocean south east of Port Elizabeth, South Africa during a hurricane with the loss of 88 passengers and crew. There were 29 survivors. (en)
- World War II: The was scuttled at Donnai, French Indochina. (en)
- World War II: The was bombed and damaged by Japanese aircraft, then scuttled in the Mekong River, French Indochina. (en)
- World War II: The was bombed and damaged off Unten, Okinawa. Abandoned in sinking conditions from leaks. (en)
- World War II: The cable ship was sunk by aircraft off Bornholm in the Baltic Sea. (en)
- World War II: The K-18-class river minesweeping launch was sunk in error by Soviet artillery on the Danube near Sutto, Hungary. (en)
- World War II: The auxiliary minesweeper was scuttled by in the Mekong River at My Tho, French Indochina. (en)
- World War II: Convoy KANA-803: The transport was torpedoed and sunk north of Amami O-Shima by . 43 crewmen and 64 troops were killed. (en)
- World War II: Convoy SC 167: The cargo ship was torpedoed and sunk in St. George's Channel by with the loss of four of her 46 crew. Survivors were rescued by . (en)
- World War II: The Type XXI submarine was sunk in an American air raid on Bremen. (en)
- World War II: The Type C Kō-hyōteki-class midget submarine was bombed and sunk off Okinawa while charging her batteries on the surface. (en)
- World War II: Convoy HI-98: The Type 1TM tanker was torpedoed and sunk off Cap Varella, French Indochina by . Sixty-seven crewmen, 59 gunners and nine passengers were killed. (en)
- The patrol boat was destroyed in a fire off Darwin, Australia. (en)
- World War II: The Type 1943 minesweeper was bombed and sunk by aircraft at Heikendorf, Schleswig-Holstein. (en)
- World War II: The Type 1943 minesweeper was bombed and sunk by aircraft at Mönkeberg, Schleswig-Holstein. (en)
- World War II: The depot ship was torpedoed and sunk off the Kvaløytå Lighthouse, Haugesund, Norway by with the loss of 86 of her 156 crew. (en)
- The KSK-2-class naval drifter/submarine chaser was lost in a collision on this date, raised post war, repaired and put in Soviet service. (en)
- The landing craft tank Mk 3 capsized and sank in the Red Sea. (en)
- World War II: The was bombed and sunk at Wilhelmshaven by Consolidated B-24 Liberator aircraft of the United States Army Air Force. The wreck was broken up in 1946. (en)
- World War II: The ocean liner was set afire during a Royal Air Force air raid on Hamburg and was burnt out. The wreck was towed to the United Kingdom in 1947 and scrapped. (en)
- World War II: The cargo ship was torpedoed and sunk by aircraft and submarines north east of Hela, Pomerania. (en)
- World War II: The patrol vessel was scuttled at Vinh Long, French Indochina. (en)
- World War II: The Hansa A Type cargo ship was severely damaged by the explosion of two mines off Warnemünde. (en)
- World War II: The Type VIIC submarine was damaged in an American air raid on Bremen. She was consequently decommissioned. (en)
- World War II: The accommodation ship was sunk in an American air raid on Wilhelmshaven. (en)
- The minesweeper, a former VAS 301-class submarine chaser, was lost on this date. (en)
- World War II: The tanker was sunk in an Allied air raid at Hamburg. Raised post-war, repaired and returned to service for her Norwegian owners. (en)
- World War II: Granville Raid: The M 1940-class minesweeper ran aground at Granville, France, and was scuttled. (en)
- World War II: The damaged Type VIIC/41 submarine was scuttled at with the loss of seventeen of her 48 crew. Survivors were rescued by . (en)
- World War II: The Project 1125-class armored motor gunboat was sunk by German artillery on the Danube near Esztergom. (en)
- World War II: The guard boat was torpedoed and sunk in the Pacific Ocean south of Honshu by . (en)
- World War II: The minesweeper was bombed and sunk by American aircraft at Wilhelmshaven. (en)
- World War II: The auxiliary gunboat was torpedoed and sunk in the Java Sea by . (en)
- World War II: The passenger ship was sunk in an American air raid on Swinemünde. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean west of Scotland by , and with the loss of all 44 crew. (en)
- World War II: Convoy HI-88J: The Type D escort ship was strafed, bombed and sunk in the South China Sea off Nha Trang, French Indochina by North American B-25 Mitchell aircraft of the 498th and 501st Bomb Squadrons, United States Fifth Air Force. All 178 crewmen were killed. (en)
- The Liberty ship sank in the Atlantic Ocean off Baltimore, Maryland following an explosion in her engine room. She was refloated, repaired and returned to service. (en)
- World War II: Convoy RU 156: The cargo ship was torpedoed and sunk in the Atlantic Ocean by . All 30 crew were rescued by . (en)
- World War II: The Nissho Maru No. 2-class auxiliary transport was torpedoed and sunk in the Pacific Ocean south of Honshu, east north east of Mikura-jima by with the loss of 38 crewmen. (en)
- World War II: The command ship, a former , was bombed and sunk by American Consolidated B-24 Liberator aircraft at Wilhelmshaven. (en)
- World War II: Convoy SA-11: The was torpedoed and sunk off Miyako Jima in the Pacific Ocean by United States Navy aircraft from Task Force 38. (en)
- World War II: Convoy KATA-504: The transport was sunk in the East China Sea off Noma Misaki by United States Navy aircraft from Task Force 58. Five crewmen and 98 passengers were killed. (en)
- World War II: The Liberty ship struck a mine and was damaged in the North Sea off Ostend. She was beached but broke in two. The wreck was dispersed in 1952. (en)
- The A-2 -class motor torpedo boat was lost on this date. (en)
- World War II: The naval whaler/auxiliary submarine chaser was shelled and sunk at Lorient, Morbihan, France by Allied shore-based artillery. (en)
- World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean north east of the Faroe Islands by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of all 46 crew. (en)
- World War II: Convoy HI-88J: The auxiliary submarine chaser was sunk in the South China Sea off Yulin, Hainan, China by North American B-25 Mitchell aircraft of the United States Army Air Force. (en)
- World War II: The was depth charged and sunk in the Pacific Ocean off the Ryukyu Islands by , CD-33 and CD-59 . She was lost with all 89 hands. (en)
- World War II: The transport ship was torpedoed and sunk in the East China Sea north of Naha, Okinawa, by . 262 Navy passengers, 39 crewmen and 21 guards were killed. (en)
- World War II: The D-3-class motor torpedo boat was damaged, captured, and scuttled in the Baltic Sea by . (en)
- World War II:The incomplete Type 1941 torpedo boats were destroyed by their builder to prevent capture by the Red Army at the Schichau Yard, Elbing. (en)
- World War II: Convoy ATM 100: The Liberty ship was torpedoed and sunk in the North Sea off Ostend, West Flanders, Belgium by U-5366 . (en)
- World War II: The Type XXI submarine was destroyed on the slips in an American air raid on Bremen. (en)
- World War II: Convoy KANA-304: The auxiliary minesweeper was sunk in the East China Sea north west of Okinawa by United States Navy aircraft from Task Force 58. Five crew and many passengers were killed. (en)
- World War II: The naval drifter/minesweeper struck a mine and sank in the Øresund. (en)
- World War II: The Type 1939/40 Schnellboot was sunk in the North Sea off Den Helder, North Holland, Netherlands by Bristol Beaufighter aircraft of 236 Squadron, Royal Air Force. 14 crew were killed. (en)
- World War II: The Type VIIC/41 submarine attempted to ram in the Atlantic Ocean but was severely damaged in the process. She was scuttled three days later with the loss of seventeen of her 48 crew. Survivors were rescued by . (en)
- World War II: The cargo ship struck a mine and sank in the Stettin Lagoon with the loss of 52 lives. (en)
- World War II: The Type 1935 minesweeper was sunk by British rocket-armed aircraft off Fedjefjord, Norway. (en)
- World War II: The landing ship tank Mk.2 was sunk by a mine in the North Sea off Ostend, West Flanders, Belgium with the loss of four crew. (en)
- World War II: The cargo ship was torpedoed and sunk at Bergen, Norway by with the loss of a crew member. (en)
- World War II: The patrol vessel was scuttled in the Mekong River at Can Tho, French Indochina. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in The Minch by with the loss of all 45 crew. (en)
- World War II: The Type VIIC/41 submarine struck a mine and sank in the Bristol Channel off Newquay, Cornwall, United Kingdom with the loss of all 43 crew. (en)
- World War II: Convoy HI-88J: The tanker was bombed and sunk in Van Phong Bay off Nha Trang, French Indochina by Consolidated B-24 Liberator aircraft of the 43rd Bomb Group. A total of 92 passengers, eight gunners and 34 crewmen were killed. (en)
- World War II: The Type VIIC/41 submarine was bombed and sunk at Hamburg in a British air raid with the loss of one crew member. (en)
- World War II: The cargo ship was sunk in the North Sea by a Kriegsmarine Seehund midget submarine. Two crew and an armed gunner were killed. (en)
- World War II: The Type VIIC/41 submarine was depth charged and sunk in the English Channel south of Lizard Point, Cornwall, United Kingdom by with the loss of all 49 crew. (en)
- The Steiermark-class naval whaler was lost to an unknown cause on this date. (en)
- World War II: The Type VIIC submarine was bombed and sunk at Finkenwerder, Hamburg by United States Army Air Force aircraft. (en)
- The MSV-38-class river minesweeping boat was sunk on this date. (en)
- World War II: The transport was shelled and sunk in the Andaman Sea east of Khota Andaman by . (en)
- World War II: The torpedo boat was shelled and sunk in the Baltic Sea by Kriegsmarine Schnellboote. (en)
- World War II: The Liberty ship was damaged by a mine in Subic Bay, Philippines and was declared a constructive total loss. There were no casualties. (en)
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