List of shipwrecks in March 1944

The list of shipwrecks in March 1944 includes ships sunk, foundered, grounded, or otherwise lost during March 1944.

1 March

 * HMS Gould (K476) : World War II: The Captain-class frigate was torpedoed and sunk in the Atlantic Ocean off Portugal by GS U-358 with the loss of 123 of her 137 crew.
 * SS Saint Louis (1913) (🇫🇷 France): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off Accra, Gold Coast (5.38333°N, -0.15°W) by GS U-66 (1940) with the loss of 85 of the 134 people on board.
 * GS U-358 : World War II: The Type VIIC submarine was depth charged, shelled and sunk in the Atlantic Ocean north of the Azores, Portugal (45.76667°N, -23.26667°W) by HMS Affleck (K362), HMS Garlies (K475), HMS Gore (K481) and HMS Gould (K476) (all ) with the loss of 50 of her 51 crew.
 * GS U-603 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (48.91667°N, -26.16667°W) by USS Bronstein (DE-189) with the loss of all 51 crew.
 * GS U-709 : World War II: The Type VIIC submarine was depth charged, shelled and sunk in the Atlantic Ocean (49.16667°N, -26°W) by USS Bostwick (DE-103), USS Bronstein (DE-189) and USS Thomas (DE-102) (all ) with the loss of all 52 crew.

2 March

 * HMS LST-342 : World War II: Convoy MKS 40: The Landing Ship, Tank was torpedoed and sunk in the Atlantic Ocean (48°N, -17.38333°W) by GS U-744.
 * SS Thor (1922) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk by a submarine off Stad, Norway.

3 March

 * SS Fort McLeod (🇬🇧 United Kingdom): World War II: The Fort ship was torpedoed, shelled and sunk in the Indian Ocean (2.01667°N, 77.1°W) by JAPANESE SUBMARINE I-162.
 * JAPANESE SUBMARINE CHASER Karatsu : World War II: The gunboat was torpedoed and damaged off the Philippines by USS Narwhal (SS-167) : Although towed to Manila for repairs, these were not completed. She was scuttled as a blockship in Manila Bay on 5 February 1945.
 * SS Nattai Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Celebes Sea by USS Rasher (SS-269).
 * JAPANESE MINELAYER Shirakami : World War II: The Sokuten-class minelayer collided with JAPANESE TRANSPORT Nichiran Maru off Yoshino-hama in the Pacific Ocean in a storm. Damage control failed and she broke up and sank on the 5th (45.5°N, 150°W).  There were 70 survivors rescued.

4 March

 * SS Empire Tourist (🇬🇧 United Kingdom): World War II: Convoy RA 57: The cargo ship was torpedoed and sunk in the Barents Sea east of Bear Island, Norway (73.41667°N, 22.18333°W) by GS U-703 . All 68 crew were rescued by HMS Gleaner (J83).
 * SS Joel R. Ponsett (🇺🇸 United States): The Liberty ship was broken in two in the Atlantic Ocean (43.5°N, -56.5°W) and was abandoned. The stern section was towed to Halifax, Nova Scotia, Canada and put to use as a depot ship.
 * SS Kayo Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Peto (SS-265).
 * JAPANESE OILER Ominesan Maru : World War II: The Oiler was torpedoed and sunk in the  South China Sea 300 miles west of  Miri, Borneo (5.48333°N, 108.76667°W)by USS Bluefish (SS-222)  . 46 crewmen  were killed.
 * GS U-472 : World War II: The Type VIIC submarine was sunk in the Barents Sea (73.08333°N, 26.66667°W) by a rocket attack by Fairey Swordfish aircraft of 816 Squadron, Fleet Air Arm base on HMS Chaser (D32) and by shelling from HMS Onslaught (G04) (both ) with the loss of 23 of her 43 crew.

5 March

 * SS John Holt (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Gulf of Guinea (3.93333°N, 7.6°W) by GS U-66 (1940) . Of the 95 people on board, two were taken as prisoners of war and were lost when U-66 was sunk The others were rescued by SS Empire Ruby (🇬🇧 United Kingdom).
 * HMS ML 387 (ML 387) : World War II: The Motor Launch was sunk by an internal explosion at Beirut, Lebanon.
 * GS U-366 : World War II: The Type VIIC submarine was depth charged and sunk in the Arctic Ocean north west of Hammerfest, Finnmark, Norway (72.16667°N, 14.73333°W) by a Fairey Swordfish aircraft of 816 Squadron, Fleet Air Arm based on HMS Chaser (D32) with the loss of all 50 crew.
 * GERMAN PATROL BOAT UJ-1703 : World War II: The patrol boat was torpedoed and sunk by aircraft off Lindesnes, Norway.

6 March

 * JAPANESE TRANSPORT America Maru : World War II: The transport was torpedoed and sunk in the Pacific Ocean 420 miles north-north-west of Saipan (22.31667°N, 143.9°W) by USS Nautilus (SS-168) . 599 crew and passengers were killed, 43 survivors.
 * SS Daniel Chester French (🇺🇸 United States): World War II: The Liberty ship struck a mine and sank in the Mediterranean Sea off Bizerta, Algeria (37.28333°N, -10.36667°W).
 * GS U-744 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (52.01667°N, -22.61667°W) by HMCS Chaudiere (H99), HMCS Chilliwack (K131), HMCS Fennel (K194), HMCS Gatineau (H61), HMCS St. Catharines (K325) (all ), HMS Icarus (D03) and HMS Kenilworth Castle (K42) (both ) with the loss of twelve of her 52 crew.
 * GS U-973 : World War II: The Type VIIC submarine was sunk in the Norwegian Sea (70.66667°N, 5.8°W) by a Fairey Swordfish aircraft of 816 Squadron Fleet Air Arm based on HMS Chaser (D32) with the loss of 51 of her 66 crew.

7 March

 * SS Lippe (1919) (🇩🇪 Germany): World War II: The cargo ship was torpedoed by HMS Sceptre (P215) at 64.53333°N, 10.63333°W and beached in Nord-Trøndelag, Norway.
 * USS PT-337 (PT-337) : World War II: The ELCO 80' -class PT Boat was shelled and sunk by shore batteries  off Hansa Bay, New Guinea.
 * MV Tarifa (1936) (🇳🇴 Norway): World War II: Convoy AB 33: The cargo ship was torpedoed and sunk in the Arabian Sea 250 nmi east of Socotra, Mahra Sultanate (12.8°N, 58.73333°W) by GS U-510 with the loss of three of the 148 people on board. Survivors were rescued by HMS Avon (1943).
 * SS Valera (🇵🇦 Panama): World War II: The tanker was torpedoed and sunk in the Caribbean Sea 120 nmi north of Barranquilla, Colombia (11.5°N, -76.45°W) by GS U-518 with the loss of one of her 35 crew. Survivors were rescued by a United States Coast Guard ship.

8 March

 * SS Toyokuni Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the South China Sea by USS Lapon (SS-260).

9 March

 * MV British Loyalty (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and sunk at Addu Atoll, Maldives by GS U-183 . She was salvaged and returned to use as a hulk.
 * SS Clark Mills (🇺🇸 United States): World War II: The Liberty ship was bombed and damaged in the Mediterranean Sea off Bizerta, Algeria by Luftwaffe aircraft. She was beached but declared a total loss.
 * HMS MTB 266 (MTB266) : World War II: The ELCO 70'.-class Motor Torpedo Boat was heavily damaged by enemy gunfire. Sank at Alexandria, Egypt 17 April 1944.
 * SS Richard Bland (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the Atlantic Ocean off Iceland (65.88333°N, -14.16667°W) by GS U-255.
 * SS Nichirei Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the South China Sea by USS Lapon (SS-260).

10 March

 * HMS Asphodel (K56) : World War II: Convoy SL 150: The Flower-class corvette was torpedoed and sunk in the Atlantic Ocean west north west of Cape Finisterre, Spain (45.4°N, -18.15°W) by GS U-575 with the loss of 92 of her 97 crew. Survivors were rescued by HMS Clover (K134).
 * USS Leopold (DE-319) : World War II: Convoy CU 16: The Edsall-class destroyer escort was torpedoed and damaged in the Atlantic Ocean south of Iceland by GS U-255 with the loss of 171 of her 199 crew. She was abandoned and sank the next day. Survivors were rescued by USS Joyce (DE-317).
 * SS Rabe (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank off Stavanger, Norway.
 * USS SC-700 (SC-700) : World War II: The submarine chaser burned at Vella Lavella, Solomon Islands in a refueling accident.
 * SS Sangigi ( undefined): World War II: The cargo ship was bombed and sunk by aircraft at Dubrovnik, Croatia.
 * JAPANESE TRANSPORT Tsukikawa Maru (🇯🇵 Japan): World War II: The Transport was torpedoed and damaged  (-1.86667°N, 128.2°W) by USS Bowfin (SS-287)  . She sank the next day under tow  (-1.41667°N, 128.23333°W), 2 crewmen and 4 Troops were killed.
 * GS U-343 : World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea off Tunisia (38.11667°N, 9.68333°W) by HMS Mull (T110) with the loss of all 51 crew.
 * GS U-450 : World War II: The Type VIIC submarine was depth charged and sunk in the Tyrrhenian Sea off Ostia, Italy (41.18333°N, 12.45°W) by HMS Blankney (L30), HMS Blencathra (L24), HMS Brecon (L76), HMS Exmoor (L08) (all ) and USS Madison (DD-425) . All 42 crew survived.
 * GS U-625 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay (52.58333°N, -20.31667°W) by a Short Sunderland aircraft of 422 Squadron, Royal Canadian Air Force with the loss of all 52 crew.
 * GS U-845 : World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean (48.33333°N, -20.55°W) by HMS Forester (H74), HMCS Owen Sound (K340), HMCS St. Laurent (H83) and HMCS Swansea (K328) (all ) with the loss of ten of her 55 crew.
 * SS William B. Woods (🇺🇸 United States): World War II: The Liberty ship was torpedoed and damaged in the Mediterranean Sea off Palermo, Sicily, Italy (38.6°N, 13.9°W) by GS U-952 with the loss of 52 of the 478 people on board. Survivors were rescued by ITALIAN TORPEDO BOAT Aretusa  and two Fairmile B motor launches.

11 March

 * GS UIT-22 (: World War II: The Liuzzi- class submarine (formerly in Italian service as Alpino Attilio Bagnolini) was bombed and sunk in the South Atlantic south of the Cape of Good Hope, South Africa (-41.46667°N, 17.66667°W) by South African Air Force aircraft with the loss of all 43 crew.
 * GS U-380 : World War II: The Type VIIC submarine was sunk at Toulon, Var, France in an American air raid with the loss of one life.
 * GS U-410 : World War II: The Type VIIC submarine was bombed and sunk at Toulon in an American air raid.

12 March

 * SS Kirissi (🇩🇪 Germany): World War II: The tanker was bombed, torpedoed and sunk off the mouth of the Ebro by Royal Air Force aircraft.
 * SS Okinoyama Maru No.3 (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Truk, South Pacific Mandate by USS Gato (SS-212).
 * SS Virginia Dare (🇺🇸 United States): World War II: The Liberty ship struck a mine and was damaged in the Mediterranean Sea. She was towed to Tunis, Tunisia but broke in two and was declared a constructive total loss.

13 March

 * SS Kokuyo Maru (🇯🇵 Japan): World War II: The Transport was torpedoed and sunk 40 miles south of Hachijo Jima in the Pacific Ocean (32.86667°N, 139.2°W) by USS Sand Lance (SS-381).
 * SS Peleus (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the South Atlantic (approximately -2°N, -10°W) by GS U-852 . The crew was massacred by the Germans to hide the traces of the attack. Three of her 35 crew survived and were rescued by SS Alexandre Silva (🇵🇹 Portugal).
 * SS Ryua Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Tautog (SS-199).
 * SS Shojen Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Tautog (SS-199).
 * JAPANESE CRUISER Tatsuta : World War II: The was torpedoed and sunk 40 miles south of Hachijo Jima in the Pacific Ocean (32.86667°N, 139.2°W) by USS Sand Lance (SS-381) . 26 crewmen lost, 10 wounded.
 * GS U-575 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (46.3°N, -27.56667°W) by Grumman TBM Avenger aircraft based on USS Bogue (CVE-9) (, Boeing B-17 Flying Fortress and Vickers Wellington aircraft of 172, 206 and 220 Squadrons, Royal Air Force; and also by USS Haverfield (DE-393), USS Hobson (DD-464) (both ) and HMCS Prince Rupert with the loss of eighteen of her 55 crew.

14 March

 * SS Irma (North Sands, 1906) (🇩🇪 Germany): The cargo ship was wrecked off Trondheim, Norway.

15 March

 * ST Empire Ace (🇬🇧 United Kingdom): World War II: The tug was sunk at Malta in an air raid. Salvaged on 10 May, repaired and returned to service.
 * SS Europa (1899) (🇩🇪 Germany): The cargo ship was lost in a collision off Stavanger, Norway.
 * GS U-653 : World War II: The Type VIIC submarine was torpedoed and sunk by a Fairey Swordfish of HMS Vindex (D15) and gunfire from HMS Starling (U66) and HMS Wild Goose (U45) (all ).

16 March

 * SS Kofuku Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean west of the Mariana Islands by USS Silversides (SS-236).
 * HMS MTB 417 (MTB 417) : World War II: The Motor Torpedo Boat was shelled and sunk by a German warship off Calais.
 * SS Nichiren Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean by USS Tautog (SS-199).
 * JAPANESE DESTROYER Shirakumo : World War II: The Fubuki-class destroyer was torpedoed and sunk in the Pacific Ocea 170 nmi east of Muroran, Hokkaido (42.41667°N, 144.91667°W by USS Tautog (SS-199) with the loss of all 219 crew.
 * GS U-392 : World War II: The Type VIIC submarine was depth charged and sunk in the Strait of Gibraltar (35.91667°N, -5.68333°W) by HMS Affleck (K362), HMS Vanoc (H33) (both ) and three Consolidated PBY Catalina aircraft of the United States Navy with the loss of all 52 crew.

17 March

 * MV Dempo (🇳🇱 Netherlands): World War II: Convoy SNF 17: The troopship was torpedoed and sunk in the Mediterranean Sea 30 nmi north north east of Bougie, Algeria (37.13333°N, 5.45°W) by GS U-371 . All 333 people on board survived.
 * SS Maiden Creek (🇺🇸 United States): World War II: Convoy SNF 17: The Type C2 cargo ship was torpedoed and damaged in the Mediterranean Sea 30 nmi north north east of Bougie (37.13333°N, 5.45°W) by GS U-371 with the loss of eight of the 78 people on board. She was beached at Bougie but broke in two and was declared a constructive total loss.
 * USS PT-283 (PT-283) : World War II: The Higgins 78' -class PT Boat was shelled and sunk by USS Guest (DD-472)   off  Bouganville, Solomon Islands (-6.45°N, 155.13333°W).
 * GS U-28 (1936) : World War II: The Type VIIC submarine was sunk at Neustadt in Holstein, Schleswig Holstein in a training accident. Later raised but declared a total loss.
 * GS U-801 : World War II: The Type IXC/40 submarine was sunk in the Atlantic Ocean (16.7°N, -30.33333°W) by USS Bronstein (DE-189), USS Corry (DD-463) and two Grumman TBM Avenger aircraft based on USS Block Island (CVE-21) (all ) with the loss of ten of her 57 crew.
 * GS U-1013 : The Type VIIC/41 submarine collided with GS U-286 in the Baltic Sea east of Rügen, Mecklenburg-Vorpommern (54.35°N, 13.96667°W) and sank with the loss of 25 of her 51 crew.

18 March

 * JAPANESE AUXILIARY SUBMARINE CHASER CHa-10 : World War II: The auxiliary submarine chaser was shelled and sunk in the Bismarck Sea at Mushu Island, Wewak New Guinea (-3.55°N, 143.63333°W) by USS Daly (DD-519).
 * SS Hokoruko Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the South China Sea by USS Lapon (SS-260).

19 March

 * JAPANESE AUXILIARY SUBMARINE CHASER CHa-47 : World War II: The Auxiliary Sub Chaser was bombed, strafed and sunk by 5th Air Force B-24s and B-25s of the 345 Bomb Wing, and A-20 Havocs of the 3rd Bomb Group and P-38s 50 miles north of Wewak, New Guinea in the Bismarck Sea.
 * JAPANESE AUXILIARY SUBMARINE CHASER CHa-49 : World War II: The Auxiliary Sub Chaser was bombed, strafed and sunk by 5th Air Force B-24s and B-25s of the 345 Bomb Wing, and A-20 Havocs of the 3rd Bomb Group and P-38s 50 miles north of Wewak, New Guinea in the Bismarck Sea.
 * SS John A. Poor (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the Arabian Sea (13.96667°N, 70.5°W) by GS U-510 with the loss of 34 of her 73 crew. Survivors were rescued by SS Fort Walsh (🇬🇧 United Kingdom).
 * SS Seekay (🇺🇸 United States): World War II: Convoy CU 17: The tanker was torpedoed and sunk in the Atlantic Ocean 375 nmi west of the Fastnet Rock (51.16667°N, -20.33333°W) by GS U-311 with the loss of one of the 85 people on board. Survivors were rescued by USS Reeves (DE-156).
 * JAPANESE TRANSPORT Taiei Maru : World War II: The Transport was bombed, strafed and sunk by 5th Air Force B-24s and B-25s of the 345 Bomb Wing, and A-20 Havocs of the 3rd Bomb Group and P-38s 50 miles north of Wewak, New Guinea in the Bismarck Sea . 50 troops and 78 crewmen lost.
 * GS U-1059 : World War II: The Type VIIF submarine was sunk in the Atlantic Ocean south west of the Cape Verde Islands (13.1°N, -33.43333°W) by Grumman TBF Avenger and Grumman F4F Wildcat aircraft based on USS Block Island (CVE-21) with the loss of 47 of her 55 crew.
 * JAPANESE TRANSPORT Yakumo Maru : World War II: The Transport was bombed, strafed and sunk by 5th Air Force B-24s and B-25s of the 345 Bomb Wing, and A-20 Havocs of the 3rd Bomb Group and P-38s 50 miles north of Wewak, New Guinea in the Bismarck Sea . 48 troops and 62 crewmen lost.

20 March

 * MS Erfurt (1923) (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank off Fehmarn, Germany.
 * HMS Graph : The Type VIIC submarine ran aground off Could Point, Islay (55.80167°N, -6.475°W) and was wrecked.
 * JAPANESE AUXILIARY NET LAYER Hakuyo Maru : World War II: The Auxiliary Net Layer was torpedoed and sunk in the Pacific Ocean off the Nanpō Islands 30 miles northeast of Torishima (30.885°N, 140.7°W) by USS Pollack (SS-180).
 * SS Rekum (🇩🇪 Germany): World War II: The cargo ship was shelled and sunk in the English Channel off Boulogne, Pas de Calais, France by British shore-based artillery.
 * GERMAN MINESWEEPER Sperrbrecher 163 : World War II: The Sperrbrecher struck a mine and sank in the Skagerrak.
 * JAPANESE AUXILIARY SUBMARINE CHASER CHa-10 : World War II: The auxiliary submarine chaser was shelled and sunk in the Bismarck Sea at Mushu Island, Wewak, New Guinea (-3.55°N, 143.63333°W) by USS Daly (DD-519).

21 March

 * MV Grena (1934) (🇳🇴 Norway): World War II: The tanker was torpedoed and sunk in the Indian Ocean (20.8°N, 59.63333°W) by JAPANESE SUBMARINE I-26 with the loss of seven of her 42 crew.
 * SS Matadian (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean (5.11667°N, 4.78333°W) by GS U-66 (1940)). All 47 crew were rescued by HMML-282.

22 March

 * SS Narvik (1895) (🇳🇴 Norway): World War II: The coaster was shelled and sunk in the Norwegian Sea off Rødøy by HMS Syrtis (P241) with the loss of sixteen of the 25 people on board.
 * SS Watuka (🇨🇦 Canada): World War II: Convoy SH 124: The cargo ship was torpedoed and sunk in the Atlantic Ocean south east of Halifax, Nova Scotia (44.5°N, -62.85°W) by GS U-802 with the loss of one of her 26 crew. Survivors were rescued by HMCS Anticosti (T274).

23 March

 * JAPANESE SUBMARINE I-42 : World War II: The Type B submarine was torpedoed and sunk in the Pacific Ocean 6 miles off Angaur Palau (6.66667°N, 134.05°W) by USS Tunny (SS-282) with a loss of all 102 crewmen.
 * USS LCT-315 (LCT-315) : World War II: The Landing Craft, Tank was sunk by an explosion at Eniwetok.
 * GS U-575 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by USS Haverfield (DE-393), USS Hobson (DD-464), USS Swenning (DE-394) (all ), HMS Rupert (K561) and aircraft based on USS Bogue (CVE-9) . Seven survivors were rescued by USS Haverfield, and sixteen by USS Hobson.
 * USS YP-331 :World War II: The Yard Patrol Craft foundered in a storm off Key West, Florida (24.93333°N, -81.95°W).

24 March

 * JAPANESE AUXILIARY TRANSPORT Bengal Maru : World War II: The transport was torpedoed and sunk in the Pacific Ocean (5.61667°N, 125.96667°W) 28 miles east of Cape Chinaka, Mindanao, Philippine Islands by USS Bowfin (SS-287) . 41 crewmen, 4 Gunners and 161 passenger are lost.
 * JAPANESE SUBMARINE I-32 : World War II: The Type B submarine was depth charged, Hedgehoged, Mousetrapped and sunk in the Pacific Ocean 50 miles south of Wotje (8.5°N, 170.16667°W) by USS Manlove (DE-36), USS Halsey Powell (DD-686), and USS PC-1135 (PC-1135) all.
 * SS Nordnorge (1883) (🇳🇴 Norway): World War II: The coaster was torpedoed and sunk in the Barents Sea off Honningsvåg, Finnmark by HMS Satyr (P214) with the loss of eleven of her thirteen crew.
 * JAPANESE TRANSPORT Shinkyo Maru : World War II: The transport was torpedoed and sunk in the Pacific Ocean (5.61667°N, 125.96667°W)28 miles east of Cape Chinaka, Mindanao, Philippine Islands by USS Bowfin (SS-287) . 12 crewmen and 49 passenger are lost.

25 March

 * JAPANESE SUBMARINE CHASER CH-54 : World War II: The submarine chaser was torpedoed and sunk in the Pacific Ocean off the Nanpō Islands(28.56667°N, 142.23333°W) by USS Pollack (SS-180).
 * GS U-976 : World War II: The Type VIIC submarine was sunk in the Bay of Biscay off Saint-Nazaire, Loire Atlantique (46.8°N, -2.71667°W) by two de Havilland Mosquito aircraft of 248 Squadron, Royal Air Force with the loss of four of her 53 crew.

26 March

 * HMS MTB352 (MTB352) : The Motor Torpedo Boat was sunk in a collision in the North Sea.
 * USS Tullibee (SS-284) : World War II: The Gato-class submarine was sunk in the Pacific Ocean (9.5°N, 134.75°W) by the malfunction of one of her own torpoedos which had been fired at Japanese Convoy Nishi-Matsu No. 2/TAPA-06. Only one of her 60 crew survived, rescued by JAPANESE DESTROYER Wakatake.

27 March

 * HMS LCI(L)-273 : World War II: The Landing Craft Infantry (Large) was lost on this date, details unknown.
 * HMT Maaløy (J136) : World War II: The naval trawler was torpedoed and sunk in the Indian Ocean off Ceylon (5.41667°N, 77.53333°W) by GS U-510 with the loss of all 26 crew.
 * SS Nichinan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Rasher (SS-269).
 * USS PT-121 (PT-121) : World War II: The ''ELCO 80"-class PT Boat was bombed and sunk by Royal Australian Air Force aircraft in Bangula Bay, New Britain Island (-5.28333°N, 151.01667°W).
 * USS PT-353 (PT-353) : World War II: The ''ELCO 80"-class PT Boat was bombed and sunk by Royal Australian Air Force aircraft in Bangula Bay, New Britain Island (-5.28333°N, 151.01667°W).
 * MV Tulagi (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean north east of Cape Comorin, India (-11°N, 78.66667°W) by GS U-532 with the loss of 47 of her 54 crew.
 * SS Yamamizu Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and sunk in the Pacific Ocean off Borneo by USS Hake (SS-256).

28 March

 * HMS Syrtis (P241) : World War II: The S-class submarine struck a mine and sank in the Norwegian Sea off Bodø, Norway with the loss of all 48 crew.

29 March

 * MV Christel Vinnen (1922) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk by aircraft off Juist, Germany.
 * SS Richard Hovey (🇺🇸 United States): World War II: The Liberty ship was torpedoed, shelled and sunk in the Indian Ocean (16.66667°N, 64.5°W) by JAPANESE SUBMARINE I-26.
 * GS U-961 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean 150 nmi north of the Faroe Islands (64.51667°N, -3.31667°W) by HMS Starling (U66) ) with the loss of all 49 crew.

30 March

 * JAPANESE REPAIR SHIP Akashi : World War II: Operation Desecrate One: The Akashi-class repair ship was sunk off the north shore of Uruthapel Island, Palau in the Pacific Ocean (7.5°N, 134.5°W) by U.S. Navy aircraft from Task Force 58. She sank in shallow water and was only partially submerged.
 * JAPANESE TANKER Akebono Maru : World War II: Operation Desecrate One: The Tanker was bombed and sunk off  Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58. 5 crewmen killed.
 * JAPANESE TANKER Amatsu Maru : World War II: Operation Desecrate One: The Oiler was bombed and sunk in Malakai Harbor, Babelthuap Island, Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58. 10 crewmen killed.
 * JAPANESE TANKER Asashio Maru : World War II: Operation Desecrate One: The Oiler was bombed, torpedoed and sunk in Kobasang Harbor, Palau in the Pacific Ocean (7.41667°N, 134.41667°W) by U.S. Navy aircraft from Task Force 58. 18 crewmen killed
 * JAPANESE SUBMARINE CHASER CH-6 : World War II: Operation Desecrate One: The No.4-class submarine chaser was bombed and  sunk off  Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58 (7.5°N, 134.5°W).
 * JAPANESE AIRCRAFT TRANSPORT Goshū Maru : World War II: Operation Desecrate One: The Aircraft Transport was bombed and sunk off  Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58. 5 crewmen killed.
 * JAPANESE CARGO SHIP Hokiai Maru : World War II: Operation Desecrate One: The cargo ship was sunk off Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58.
 * SS Ikushima Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the Mariana Islands by USS Stingray (SS-186).
 * JAPANESE DESTROYER TENDER Kamakaze Maru : World War II: Operation Desecrate One: The Kamakaze Maru-class destroyer tender was bombed, rocketed and sunk in Malakal Harbor, Urukhapel Island, Palau in the Pacific Ocean (7.5°N, 134.5°W) by U.S. Navy aircraft from Task Force 58.
 * JAPANESE CARGO SHIP Kibi Maru : World War II: Operation Desecrate One: The cargo ship was sunk off Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58.
 * SS Krom (🇹🇷 Turkey): World War II: The cargo ship was torpedoed and sunk in the Aegean Sea.
 * HMS Laforey (G99) : World War II: The The L-class destroyer was torpedoed and sunk in the Mediterranean Sea north of Palermo, Sicily, Italy (38.9°N, 14.3°W) by GS U-223 with the loss of 182 of her 247 crew. Survivors were rescued by HMS Blencathra (L24), HMS Hambledon (L37) and HMS Tumult (R11) (all ).
 * JAPANESE TRANSPORT Nagasan Maru : World War II: Operation Desecrate One: The Transport was sunk off Palau in the Pacific Ocean (7.28333°N, 134.41667°W) by U.S. Navy aircraft from Task Force 58. 2 crewmen killed.
 * JAPANESE PATROL BOAT PB-31 : World War II: Operation Desecrate One: The PB-31-class patrol boat was torpedoed and sunk 20 miles into Karamadoo Bay, west of Babelthaup Island, Palau in the Pacific Ocean (7.5°N, 134.5°W) by U.S. Navy aircraft from Task Force 58.
 * JAPANESE CARGO SHIP Raizan Maru : World War II: Operation Desecrate One: The cargo ship was sunk off Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58.
 * JAPANESE TANKER Sata Maru : World War II: Operation Desecrate One: The Oiler was bombed, torpedoed on the 30th, and capsizes and sinks on the 31st at Kuror, Peleliu, Palau in the Pacific Ocean (7.41667°N, 134.41667°W) by U.S. Navy aircraft from Task Force 58. 18 crewmen killed
 * JAPANESE CARGO SHIP Teshio Maru : World War II: Operation Desecrate One: The cargo ship was sunk off Palau in the Pacific Ocean by U.S. Navy aircraft from Task Force 58.
 * GS U-223 : World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea (38.8°N, 14.16667°W) by HMS Blencathra (L24), HMS Hambledon (L37), HMS Laforey (G99) and HMS Tumult (R11) (all ) with the loss of 23 of her 50 crew.
 * JAPANESE REPAIR SHIP Urakami Maru : World War II: Operation Desecrate One: The Urakami-class repair ship was bombed, torpedoed and sunk in Malakal Harbor, Palau in the Pacific Ocean (7.5°N, 134.5°W) by U.S. Navy aircraft from Task Force 58.
 * JAPANESE DESTROYER Wakatake : World War II: Operation Desecrate One: The Wakatake-class destroyer was torpedoed and sunk 20 miles into Karamadoo Bay, west of Babelthaup, Palau in the Pacific Ocean (7.5°N, 134.5°W) by U.S. Navy aircraft from Task Force 58.

31 March

 * JAPANESE TANKER Iro : World War II: Operation Desecrate One: The Tanker was bombed and set on fire in a lagoon at Koror, Peleliu, in the Pacific Ocean by U.S. Navy aircraft from Task Force 58. She burned until she sank on April 17, 1944. 50 soldiers on board were killed.
 * JAPANESE MINELAYE Nasami : World War II: The Natsushima-class minelayer was bombed and damaged off Rabaul. The damaged caused her to be beached 1 April 1944 at Karavia BayRabaulNew Britain Island. Partially scrapped in place 1969.

Unknown date

 * HMS Stonehenge : World War II: The S-class submarine was probably struck a mine and sank in the Mediterranean Sea sometime between 2 and 16 February with the loss of all 50 crew.
 * JAPANESE SUBMARINE I-32 : World War II: The Type B1 submarine was depth charged and sunk in the Pacific Ocean off the Marshall Islands by USS Canastota (PC-1135), USS Halsey Powell (DD-686) and USS Manlove (DE-36) (all ). Date was either 23 or 24 March.
 * GS U-851 : World War II: The Type IXD2 submarine went missing on patrol in the Atlantic Ocean on or after 27 March with the loss of all 70 crew.