# List of shipwrecks in April 1945

The list of shipwrecks in April 1945 includes ships sunk, foundered, grounded, or otherwise lost during April 1945.

## 1 April

List of shipwrecks: 1 April 1945 :
| Ship | State | Description |
| Adler | Kriegsmarine | World War II: The Adler-class gunnery training ship, a former Herluf Trolle-class coastal defence ship, was sunk at Kiel, Germany by Allied aircraft. |
| Armenier | United Kingdom | The cargo ship (914 GRT, 1919) was scuttled off Littlehampton, Sussex after service as a target ship. |
| Awa Maru | Japan | World War II: The Miike Maru-class Red Cross prisoner of war relief supply ship was torpedoed and sunk by the submarine USS Queenfish ( United States Navy) while marked with illuminated white cross and after having been guaranteed safe passage by the Allies. There was only one survivor among the 2,005 people on board, rescued by Queenfish. The wreck was located at 24°40′N 119°45′E﻿ / ﻿24.667°N 119.750°E﻿ / 24.667; 119.750 in the 1970s–1980s. Salvage work was done by China Salvage Company, with some remains and artifacts returned to Japan. |
| Crvena Zvijezda | Yugoslav Navy | World War II: The gunboat was sunk by a mine off Sansego, Adriatic Sea, with the loss of 17 or 22 lives and 22 wounded. |
| 2 Shin'yō suicide motorboats | Imperial Japanese Navy | World War II: Battle of Okinawa: The Shin'yō-class suicide motorboats were sunk in Nakagusuku Bay, Okinawa. |
| Uta | Kriegsmarine | World War II: The repair ship, a converted Kriemhild-class guard ship, was sunk on the Danube River by aircraft. Raised, repaired and put in Soviet service as Angara. |

## 2 April

List of shipwrecks: 2 April 1945 :
| Ship | State | Description |
| CD-186 | Imperial Japanese Navy | World War II: Convoy "O-Shima Transport Unit":The Type D escort ship was sunk in the East China Sea south west of Amami Ōshima (28°07′N 129°09′E﻿ / ﻿28.117°N 129.150°E﻿ / 28.117; 129.150) by United States Navy aircraft from Task Force 58. 53 crew were killed and many more wounded. T-146 rescues survivors. |
| Concordia | Norway | World War II: The cargo ship (5,154 GRT, 1940) was bombed and sunk in Sognefjord, Norway by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. Later raised, repaired and returned to service. |
| USS Dickerson | United States Navy | World War II: The high-speed transport, a former Wickes-class destroyer, was damaged in the Pacific Ocean off Okinawa, Japan by a kamikaze attack with the loss of 54 of her 101 crew. The ship was scuttled off Kerama Retto on 4 April. |
| Edogawa Maru | Japan | World War II: Convoy TAMO-51: The cargo ship was torpedoed and sunk in the Yellow Sea (34°02′N 124°00′E﻿ / ﻿34.033°N 124.000°E﻿ / 34.033; 124.000) by USS Sea Devil ( United States Navy). Lost with all 48 crew. |
| Nisshin Maru | Japan | World War II: Convoy TAMO-51: The cargo ship was torpedoed and sunk in the Yellow Sea (34°02′N 124°00′E﻿ / ﻿34.033°N 124.000°E﻿ / 34.033; 124.000) by USS Sea Devil ( United States Navy). Thirty-nine crew and nine gunners were killed. |
| R-256 | Kriegsmarine | World War II: The Type R-218 minesweeper sank off Bornholm, Denmark after being damaged during a Soviet air attack. |
| T-17 | Imperial Japanese Navy | World War II: Convoy "O-Shima Transport Unit": The No.1-class landing ship was sunk in the East China Sea southwest of Amami Ōshima (28°07′N 129°09′E﻿ / ﻿28.117°N 129.150°E﻿ / 28.117; 129.150) by United States Navy aircraft from Task Force 58. There were 49 dead and 80 wounded. T-146 rescued survivors. |
| Taijo Maru | Japan | World War II: Convoy TAMO-51: The cargo ship was torpedoed and sunk in the Yellow Sea (34°02′N 124°00′E﻿ / ﻿34.033°N 124.000°E﻿ / 34.033; 124.000) by USS Sea Devil ( United States Navy). Thirty-nine crew and nine gunners were killed. |
| U-321 | Kriegsmarine | World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean southwest of Ireland by a Vickers Wellington aircraft of 304 Squadron, Royal Air Force with the loss of all 41 crew. |
| UJ 1011 | Kriegsmarine | World War II: The auxiliary submarine chaser was sunk by Soviet aircraft. |
| William Blumer | Norway | World War II: The cargo ship (3,604 GRT, 1920) was bombed and sunk in Sognefjord, Norway by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. She was raised on 12 October 1946, repaired and returned to service in April 1948 as William. |

## 3 April

List of shipwrecks: 3 April 1945 :
| Ship | State | Description |
| BK-244 | Soviet Navy | The Project 1125-class armored motor gunboat was sunk on this date. |
| Brummer | Kriegsmarine | World War II: The minelayer was wrecked in a Royal Air Force air raid on Kiel, Schleswig-Holstein. |
| Daijin Maru No. 1 Go | Imperial Japanese Navy | The auxiliary guard boat was lost on this date. |
| Hedgehog | Nazi Germany | World War II: The cargo ship was bombed and sunk at Kiel, Germany. The vessel was salvaged and returned to her owners, Shell Algiers, post war. |
| Heikai Maru | Imperial Japanese Navy | World War II: The transport was bombed and sunk four miles (6.4 km) southeast of Lamma Island, Hong Kong (22°17′N 114°10′E﻿ / ﻿22.283°N 114.167°E﻿ / 22.283; 114.167) by United States Far East Air Force Consolidated B-24 Liberator aircraft. A crewman was killed. |
| Irben | Kriegsmarine | World War II: The Lauting-class mine transport was sunk at Kiel by Allied aircraft. |
| Manju | Imperial Japanese Navy | World War II: The Etorofu-class escort ship was bombed and damaged by Far East Air Force Consolidated B-24 Liberator aircraft one mile (1.6 km) northeast of Green Island, Hong Kong. Her stern remained afloat with enough buoyancy that the vessel drifted near Stonecutter's Island, Hong Kong before the ship's bow sank to the bottom. 53 crew including her commanding officer and 1 passenger were killed with another 50 crewmen wounded. Salvage began 7 April and the escort ship was fully refloated on 11 May and towed to Kowloon for repairs that were 90% finished at war's end. |
| USS S-16 | United States Navy | The decommissioned S-class submarine was sunk as a target 14 miles (23 km) west south west of Key West, Florida (24°25′N 82°02′W﻿ / ﻿24.417°N 82.033°W﻿ / 24.417; -82.033) in 260 feet (79 m) of water. |
| Shozan Maru | Imperial Japanese Navy | World War II: The transport was bombed and sunk in Hong Kong Harbor by United States Far East Air Force Consolidated B-24 Liberator aircraft. Eight crewmen were killed. |
| T 111 | Kriegsmarine | World War II: The training ship, a former G 7-class torpedo boat, was sunk at Kiel by United States aircraft. |
| U-1221 | Kriegsmarine | World War II: The Type IXC/40 submarine was bombed and sunk at Kiel in an American air raid with the loss of seven of the eighteen crew on board at the time. |
| U-2542 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Kiel in an American air raid. The wreck was scrapped post-war. |
| U-3505 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Kiel in an American air raid with the loss of a crew member. The wreck was scrapped post-war. |
| Walter Kophamel | Kriegsmarine | World War II: The hospital ship, a former Monte-class passenger ship, was bombed, set afire and sank at Kiel in an American air raid. She was refloated on 12 June 1946 and scrapped in 1948. |
| USS YMS-71 | United States Navy | World War II: The minesweeper was sunk by a mine in the Celebes Sea off Sanga Sanga, Philippine Islands (04°59′N 119°47′E﻿ / ﻿4.983°N 119.783°E﻿ / 4.983; 119.783). |
| Yokai Maru | Imperial Japanese Navy | World War II: The transport was bombed and sunk in Hong Kong Harbor by United States Far East Air Force Consolidated B-24 Liberator aircraft. Two crewmen were killed. |

## 4 April

List of shipwrecks: 4 April 1945 :
| Ship | State | Description |
| Axenfels | Germany | World War II: The cargo ship was bombed and sunk by American aircraft at Kiel, Schleswig-Holstein. Wreck scrapped in March 1948 at Blyth, Northumberland, United Kingdom. |
| USS Dickerson | United States Navy | World War II: The badly damaged Wickes-class high-speed transport was scuttled in the Pacific Ocean near Kerama Retto. |
| Feodosia | Germany | World War II: The cargo ship was bombed, exploded and sunk by British aircraft in the Kattegat. |
| Franz Jurgen | Germany | World War II: The caro ship was sunk in an Allied air raid on Kiel. She was refloated in May 1949, repaired and entered West German service. |
| Horei Maru | Imperial Japanese Navy | World War II: The Horei Maru-class salvage ship was destroyed by fire when Kinyu Maru No. 2 ( Japan) was bombed and set on fire by North American B-25 Mitchell aircraft of the 498th and 500th Bomb Squadrons (345 Bomb Group) at Mako, Pescadore Islands (23°32′N 119°39′E﻿ / ﻿23.533°N 119.650°E﻿ / 23.533; 119.650). |
| Irben | Kriegsmarine | World War II: The Irben-class minelayer was sunk off Kiel by American aircraft. |
| Kinyu Maru No. 2 | Japan | World War II: The tanker was bombed and set on fire and sunk by North American B-25 Mitchell aircraft of the 498th and 500th Bomb Squadrons (345 Bomb Group) at Mako, Pescadore Islands (23°32′N 119°39′E﻿ / ﻿23.533°N 119.650°E﻿ / 23.533; 119.650). |
| Kurt Ramien | Kriegsmarine | The Este-class naval trawler/trials ship was sunk on this date. |
| USS LCI(G)-82 | United States Navy | World War II: The landing craft infantry (gun) was sunk off Buckner Bay, Okinawa by Japanese assault demolition boats. One crew was killed. |
| USS LSM-12 | United States Navy | The landing ship medium was wrecked and abandoned, or damaged by a Shin'yō-class suicide motorboat ( Imperial Japanese Navy) on 31 March, and foundered on reef on 4 April, at Okinawa. Subsequently stripped for parts. |
| USS LST-675 | United States Navy | The landing ship tank was wrecked and abandoned at Okinawa. Subsequently stripped for parts. |
| M-802 | Kriegsmarine | World War II: The M 1943-class minesweeper was bombed and sunk by American aircraft at Kiel. |
| Mexphalte | Germany | World War II: The tanker was sunk in an American air raid on Kiel. |
| Mokuto | Imperial Japanese Navy | World War II: The Ukuru-class escort ship was mined and sunk in the Shimonoseki Strait (33°53′N 131°03′E﻿ / ﻿33.883°N 131.050°E﻿ / 33.883; 131.050). Twenty-seven crewmen were killed. |
| Monte Olivia | Germany | World War II: The hospital ship was bombed and sunk at Kiel by American aircraft. |
| New York | Germany | World War II: The ocean liner was bombed and sunk at Kiel by American aircraft. The wreck was scrapped from 2 August 1949 at Dalmuir, Scotland, and from January 1950 at Troon, Scotland. |
| R-59 | Kriegsmarine | World War II: The Type R-41 minesweeper was sunk at Kiel by American aircraft. |
| R 119 | Kriegsmarine | World War II: The Type R-41 minesweeper was sunk in an American air raid on Kiel. |
| R-261 | Kriegsmarine | World War II: The Type R-218 minesweeper was sunk at Kiel by American aircraft. |
| T-145 | Imperial Japanese Navy | World War II: The No.101-class landing ship was seriously damaged running aground on Derikyonma-Zaki (28°11′N 129°40′E﻿ / ﻿28.183°N 129.667°E﻿ / 28.183; 129.667). She was refloated on 11 April had to be abandoned as there was no hope for salvaging her. |
| Tokachi Maru | Imperial Japanese Navy | The auxiliary submarine chaser was sunk on this date. |
| U-237 | Kriegsmarine | World War II: The Type VIIC submarine was bombed and sunk at Kiel in an American air raid with the loss of a crew member. |
| U-749 | Kriegsmarine | World War II: The Type VIIC submarine was bombed and sunk at Kiel in an American air raid with the loss of two crew. |
| U-3003 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Kiel in an American air raid. The wreck was scrapped post-war. |

## 5 April

List of shipwrecks: 5 April 1945 :
| Ship | State | Description |
| Gasray | United Kingdom | World War II: The cargo ship (1,406 GRT, 1919) was torpedoed and sunk in the North Sea 2 nautical miles (3.7 km) north of St Abb's Head, Berwickshire by U-2321 ( Kriegsmarine) with the loss of eight of her 24 crew. Survivors were rescued by Clova ( United Kingdom) and the St Abb's lifeboat Royal National Lifeboat Institution. |
| Hardingham | United Kingdom | The cargo ship caught fire at Colombo, Ceylon and was abandoned by her crew. She subsequently exploded and sank. She was on a voyage from New York, United States to Calcutta, India. |
| Helmi Söhle | Kriegsmarine | World War II: the patrol boat was sunk in the Kattegat by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. |
| Kamoi | Japan | World War II: The oiler was bombed and damaged by United States Far East Air Force Consolidated B-24 Liberator aircraft at Hong Kong. She sank on 8 April in very shallow waters. The crew abandoned her on 13 April. |
| Kiho Maru No. 1 Go | Imperial Japanese Navy | The auxiliary guard boat was lost on this date. |
| Kine Maru | Imperial Japanese Navy | World War II: The cargo ship was bombed and sunk by Martin PBM Mariner aircraft of the United States Navy (22°24′N 115°28′E﻿ / ﻿22.400°N 115.467°E﻿ / 22.400; 115.467). Fifty-six passengers, five gunners and nineteen crew members were lost. |
| Rechnik Kubani BK-161 | Soviet Navy | The Project 1124/No 41-class armored motor gunboat was lost on this date. |
| Ro-49 | Imperial Japanese Navy | World War II: The Kaichū type submarine was depth charged and sunk in the Pacific Ocean off Okinawa by USS Hudson ( United States Navy). |
| USS S-17 | United States Navy | The decommissioned S-class submarine was sunk as a target. |
| Shinto Maru No. 2 | Imperial Japanese Navy | World War II: The Shinto Maru No. 2-class auxiliary netlayer (540 GRT 1939) was shelled and sunk at Naha, Okinawa by US Army artillery. It is unknown if the ship remained beached or had been refloated. Three crew were killed. |
| Stutthof | Germany | World War II: The fishing trawler was sunk in the Kattegat by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. |
| T-155 | Kriegsmarine | World War II: The depot ship, a former V-150-class torpedo boat, was sunk by Soviet aircraft at Schwiemunde. |
| USS Thornton | United States Navy | The seaplane tender, a former Clemson-class destroyer, collided with USS Ashtabula and USS Escalante (both United States Navy) in the Pacific Ocean off the Ryukyu Islands and was severely damaged. She was beached and abandoned at Keramo Retto on 2 May. |
| Tokai Maru No. 2 | Japan | World War II: The cargo ship was bombed and sunk by Consolidated B-24 Liberator, Martin B-26 Marauder and Lockheed P-38 Lightning aircraft of the United States Fifth Air Force (22°24′N 116°10′E﻿ / ﻿22.400°N 116.167°E﻿ / 22.400; 116.167). Sixteen gunners and thirteen crew members were lost. |
| Torridal | Norway | World War II: The cargo ship (1,381 GRT, 1930) was torpedoed and sunk at Folda, Norway by Utsira ( Royal Norwegian Navy) with the loss of fifteen of her eighteen crew. |
| U-242 | Kriegsmarine | World War II: The Type VIIC submarine struck a mine and sank in St George's Channel (52°02′54″N 5°46′48″W﻿ / ﻿52.04833°N 5.78000°W﻿ / 52.04833; -5.78000) with the loss of all 44 crew. |

## 6 April

List of shipwrecks: 6 April 1945 :
| Ship | State | Description |
| Amatsukaze | Imperial Japanese Navy | World War II: The Kagerō-class destroyer was bombed and damaged in the Strait of Formosa 6 nautical miles (11 km) east of Amoy, China (24°30′N 118°10′E﻿ / ﻿24.500°N 118.167°E﻿ / 24.500; 118.167) by North American B-25 Mitchell aircraft of the United States Army Air Force. She was beached at the entrance to Amoy harbor. Six officers and 150 men survived; 3 officers, 1 passenger, and 41 crew lost. On the evening of 8 April she is refloated by a storm, drifts across the harbor and grounds again at (23°55′N 117°40′E﻿ / ﻿23.917°N 117.667°E﻿ / 23.917; 117.667). Storms continue to batter her and she was scuttled with explosives on 10 April. The wreck is designated a bombing target and is expended for bombing training by the Japanese. |
| Araosan Maru | Japan | World War II: Convoy SASI-45: The cargo ship was torpedoed and sunk in the Strait of Formosa by USS Hardhead ( United States Navy) with the loss of 57 lives. |
| USS Bush | United States Navy | World War II: The Fletcher-class destroyer was sunk in the Pacific Ocean off Okinawa, Japan (27°16′N 127°48′E﻿ / ﻿27.267°N 127.800°E﻿ / 27.267; 127.800) by a Japanese kamikaze attack with the loss of 87 of her 314 crew. |
| CD-1 | Imperial Japanese Navy | World War II: Convoy HOMO-03: The Type C escort ship was sunk in Fotou Bay, China south west of Amoy (23°55′N 117°40′E﻿ / ﻿23.917°N 117.667°E﻿ / 23.917; 117.667) by North American B-25 Mitchell aircraft of the 345th Bomb Group, United States Army Air Force. |
| CD-134 | Imperial Japanese Navy | World War II: Convoy HOMO-03: The Type D escort ship was sunk in Fotou Bay south west of Amoy (23°55′N 117°40′E﻿ / ﻿23.917°N 117.667°E﻿ / 23.917; 117.667) by North American B-25 Mitchell aircraft of the 345th Bomb Group, United States Army Air Force. |
| Captain Nathaniel B. Palmer | United States | World War II: The fishing vessel was sunk 9 nautical miles (17 km) south south east of Block Island when a depth charge caught in her net exploded. Three crewmen were killed. The only survivor was rescued by Mandalay ( United States). |
| USS Colhoun | United States Navy | World War II: The Fletcher-class destroyer was sunk in the Pacific Ocean off Okinawa (27°16′N 127°48′E﻿ / ﻿27.267°N 127.800°E﻿ / 27.267; 127.800) when hit by four Japanese kamikaze aircraft. Thirty-five crewmen were killed. |
| Cuba | United Kingdom | World War II: Convoy VWP-16: The troopship (11,420 GRT, 1923) was torpedoed and sunk in the English Channel south east of the Isle of Wight (50°36′N 0°58′W﻿ / ﻿50.600°N 0.967°W﻿ / 50.600; -0.967) by U-1195 ( Kriegsmarine) with the loss of one of the 265 people on board. Survivors were rescued by HMCS Nene ( Royal Canadian Navy). |
| USS Emmons | United States Navy | World War II: The high-speed minesweeper, a former Gleaves-class destroyer, was damaged in a Japanese kamikaze attack in the Pacific Ocean off Okinawa (26°48′N 128°04′E﻿ / ﻿26.800°N 128.067°E﻿ / 26.800; 128.067) with the loss of 60 of her 208 crew. She was scuttled the next day. |
| Hobbs Victory | United States | World War II: The Victory ship was damaged in a Japanese kamikaze attack at Okinawa (25°50′N 127°14′E﻿ / ﻿25.833°N 127.233°E﻿ / 25.833; 127.233). She exploded and sank the next day. Survivors were rescued by USS Serene and USS Success (both United States Navy). |
| USS LST-447 | United States Navy | World War II: The Mk 2 landing ship tank was damaged at Kerama Retto, Japan (26°09′N 127°18′E﻿ / ﻿26.150°N 127.300°E﻿ / 26.150; 127.300) in a kamikaze attack. She sank the next day. |
| USS Leutze | United States Navy | World War II: The Fletcher-class destroyer was damaged in a Japanese kamikaze attack. She was consequently declared a constructive total loss. |
| Logan Victory | United States | World War II: The Victory ship was sunk by a kamikaze attack. |
| Marco Brunner | Germany | World War II: The troopship was sunk off Väderöarna, Sweden, with the loss of around 700 from the 1,200 people on board. |
| USS Morris | United States Navy | World War II: The Sims-class destroyer was damaged by a Japanese Nakajima B5N kamikaze aircraft. She was subsequently declared a constructive total loss. |
| USS Newcomb | United States Navy | World War II: The Fletcher-class destroyer was damaged in a Japanese kamikaze attack. She was consequently declared a constructive total loss. |
| U-1195 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the English Channel south east of the Isle of Wight (50°33′17″N 0°56′09″W﻿ / ﻿50.55472°N 0.93583°W﻿ / 50.55472; -0.93583) by HMS Watchman ( Royal Navy) with the loss of 32 crew. There were 18 survivors. |
| W-12 | Imperial Japanese Navy | World War II: The No.7-class minesweeper was torpedoed and damaged off Komodo Island and beached (08°13′N 119°14′E﻿ / ﻿8.217°N 119.233°E﻿ / 8.217; 119.233), torpedoed again and sunk by USS Besugo ( United States Navy). |

## 7 April

List of shipwrecks: 7 April 1945 :
| Ship | State | Description |
| Asashimo | Imperial Japanese Navy | World War II: Operation Ten-Go: The Yūgumo-class destroyer was torpedoed and sunk in the Pacific Ocean 150 nautical miles (280 km) south west of Nagasaki approximately 38°N 128°E﻿ / ﻿38°N 128°E﻿ / 38; 128, by aircraft based on USS San Jacinto ( United States Navy) with the loss of all 328 crew. |
| Flensburg | Germany | World War II: The incomplete cargo ship was bombed and sunk at Pillau, East Prussia by Soviet aircraft. |
| HA-64 and HA-67 | Imperial Japanese Navy | World War II: Battle of Okinawa: The Type C midget submarines were blown up to prevent capture in Unten Bay, Okinawa. |
| Hamakaze | Imperial Japanese Navy | World War II: Operation Ten-Go: The Kagerō-class destroyer was torpedoed and sunk in the Pacific Ocean 150 nautical miles (280 km) south west of Nagasaki (30°47′N 128°08′E﻿ / ﻿30.783°N 128.133°E﻿ / 30.783; 128.133) by aircraft based on USS San Jacinto ( United States Navy). 100 crew members were killed and 45 wounded. Hatsushimo ( Imperial Japanese Navy) rescued 257 survivors. |
| Isokaze | Imperial Japanese Navy | World War II: The Kagerō-class destroyer was damaged in the Pacific Ocean by aircraft of Task Force 58, United States Navy. She was scuttled with the loss of twenty of her 239 crew. Wreck located 2017/2018. |
| Isuzu | Imperial Japanese Navy | World War II: The Nagara-class cruiser was torpedoed and damaged in the Java Sea 80 nautical miles (150 km; 92 mi) north west of Bima, Dutch East Indies by USS Gabilan ( United States Navy). She was then torpedoed and sunk by USS Charr ( United States Navy) at 7°38′S 118°09′E﻿ / ﻿7.633°S 118.150°E﻿ / -7.633; 118.150. One hundred and ninety crewmen were killed. Four hundred and thirty-seven crewmen and her captain were rescued by Kari, and thirteen by W-34 (both Imperial Japanese Navy). |
| James W. Nesmith | United States | World War II: Convoy HX 346: The Liberty ship was torpedoed and damaged in the Irish Sea (53°24′N 4°48′W﻿ / ﻿53.400°N 4.800°W﻿ / 53.400; -4.800) by U-1024 ( Kriegsmarine). All 82 people on board survived. She was beached at Holyhead, Anglesey, United Kingdom but was declared a constructive total loss. Post war scuttled in the North Sea off Wilhelmshaven, Germany with a load of chemical weapons. |
| Kasumi | Imperial Japanese Navy | World War II: Operation Ten-Go: The Yūgumo-class destroyer was bombed and damaged in the Pacific Ocean 150 nautical miles (280 km) south west of Nagasaki (approximately 38°N 128°E﻿ / ﻿38°N 128°E﻿ / 38; 128) by United States Navy aircraft. Scuttled by Fuyutsuki ( Imperial Japanese Navy) with the loss of seventeen crewmen killed and 47 wounded. |
| HMS MTB 494 | Royal Navy | World War II: The BPB 72'-class motor torpedo boat (43/51 t, 1944) was rammed and sunk in the North Sea by S 176 ( Kriegsmarine). 14 crew were killed. |
| HMS MTB 5001 | Royal Navy | World War II: The Fairmile D (modified) motor torpedo boat (90/107 t, 1944) was sunk in the North Sea by gunfire by a Kriegsmarine Schnellboot or was rammed and sunk by S 177 ( Kriegsmarine). Three crew were killed. |
| Oldenburg | Germany | World War II: The cargo ship was sunk off Vadheim, Norway by Allied aircraft. |
| S 176 | Kriegsmarine | World War II: The Type 1939/40 Schnellboot was sunk by HMS MTB 494, HMS MTB 493, and HMS MTB 497 (all Royal Navy), also suffering damage by ramming HMMTB 494. Five men were killed and the survivors were captured. |
| S 177 | Kriegsmarine | World War II: The Type 1939/40 Schnellboot was sunk by HMS MTB 494, HMS MTB 493, and HMS MTB 497 (all Royal Navy), also suffering damage in a collision with HMMTB 493. The whole crew was rescued by S 174 ( Kriegsmarine) |
| Yahagi | Imperial Japanese Navy | World War II: Operation Ten-Go: The Agano-class cruiser was bombed, torpedoed and sunk in the Pacific Ocean south of Kyushu, Japan by United States Navy aircraft with the loss of 446 crew members. |
| Yamato | Imperial Japanese Navy | World War II: Operation Ten-Go: The Yamato-class battleship was bombed, torpedoed and sunk in the Pacific Ocean south of Kyushu by United States Navy aircraft with the loss of 2,055 of her 2,332 crew. |

## 8 April

List of shipwrecks: 8 April 1945 :
| Ship | State | Description |
| Albert | Germany | World War II: The cargo ship was bombed and wrecked by aircraft at Hamburg, Germany. Wreck scrapped in January 1950. |
| Boelcke | Luftwaffe | World War II: The Karl Meyer-class seaplane tender was sunk by Soviet aircraft off Hela, Danzig-West Prussia. |
| Franken | Kriegsmarine | World War II: The auxiliary ship was bombed and sunk by Soviet bombers off Hela. |
| Hans Albrecht Wedel | Luftwaffe | World War II: The Hans Albrecht Wedel-class seaplane tender was sunk by Soviet aircraft. |
| USS PGM-18 | United States Navy | World War II: The PGM-9-class gunboat was mined in Buckner Bay, Okinawa and sank with a loss of 14 of her crew, some of them aboard the YMS-103 ( United States Navy) that was mined while rescuing them. 14 of the 50 survivors were wounded. |
| Ritsu Go | Japan | World War II: The cargo ship was torpedoed and sunk in the East China Sea by USS Spadefish ( United States Navy). |
| S 202 | Kriegsmarine | World War II: The Type 1939/40 Schnellboote sank after a collision in the North Sea with S 703 Kriegsmarine whilst engaging Royal Navy motor torpedo boats. Six crewmen were killed and the survivors were captured. |
| S 223 | Kriegsmarine | World War II: The Type 1939/40 Schnellboot was sunk at Hoofden by a mine. 20 crewmen were killed. Only nine men survived. |
| S 202 | Kriegsmarine | World War II: The Type 1939/40 Schnellboote sank after a collision in the North Sea with S 202 Kriegsmarine whilst engaging Royal Navy motor torpedo boats. Seven crewmen were killed and the survivors were captured. |
| Tama Maru | Imperial Japanese Navy | The auxiliary submarine chaser was sunk on this date. |
| Tamon Maru No.12 | Japan | World War II: The cargo ship struck a mine and sank off Shanghai, China. |
| U-774 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south west of Ireland (49°58′N 11°51′W﻿ / ﻿49.967°N 11.850°W﻿ / 49.967; -11.850) by HMS Bentinck and HMS Calder (both Royal Navy) with the loss of all 44 crew. |
| U-1001 | Kriegsmarine | World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean south west of Land's End, Cornwall, United Kingdom (49°19′N 10°23′W﻿ / ﻿49.317°N 10.383°W﻿ / 49.317; -10.383) by HMS Byron and HMS Fitzroy (both Royal Navy) with the loss of all 46 crew. |
| UJ 301 | Kriegsmarine | World War II: The submarine chaser was bombed and set afire in a Soviet air raid on Hela. She was towed out of the port and scuttled by R 71 ( Kriegsmarine). |
| Vale | Germany | World War II: The cargo ship was sunk by Soviet aircraft. |
| Weserstein | Germany | World War II: The cargo ship was sunk by Soviet aircraft. |
| Wilhelm Bauer | Kriegsmarine | World War II: The submarine tender was bombed and sunk by Allied aircraft. |
| USS YMS-103 | United States Navy | World War II: The minesweeper was heavily damaged by a mine off Okinawa (26°13′N 127°54′E﻿ / ﻿26.217°N 127.900°E﻿ / 26.217; 127.900). Five of her 32 crew were killed. She was beached and abandoned as a total loss. |

## 9 April

List of shipwrecks: 9 April 1945 :
| Ship | State | Description |
| Admiral Scheer | Kriegsmarine | Admiral Scheer World War II: The Deutschland-class cruiser was sunk in a Royal Air Force air raid on Kiel, Schleswig-Holstein. |
| Albert Jensen | Kriegsmarine | World War II: The cargo ship was bombed and sunk in the Baltic Sea off Hela, Danzig-West Prussia by Soviet aircraft. She was raised post-war, repaired and entered Soviet service as Professor Popov. |
| Carsten Russ | Germany | World War II: The cargo ship was bombed and sunk in the Skagerrak by British aircraft. |
| Charles Henderson | United States | World War II: The Liberty ship exploded and sank at Bari, Apulia, Italy when her cargo of 2,000 tons of bombs detonated. There were 360 killed and 1,730 wounded in the port. |
| F 165 | Kriegsmarine | The Type A Marinefährprahm was sunk on this date. |
| Florida | Kriegsmarine | World War II: The target ship was bombed and sunk in the Baltic Sea (54°06′N 11°07′E﻿ / ﻿54.100°N 11.117°E﻿ / 54.100; 11.117) by Soviet aircraft with the loss of four lives. The wreck was raised in 1952. |
| HMS LCP(R) 738 | Royal Navy | The landing craft personnel (ramp) (5,9/8,2 t, 1943) foundered in a storm in the Mediterranean Sea. |
| Lucia C. | Italy | World War II: The cargo ship sank at Bari due to damage sustained from the explosion of Charles Henderson ( United States) with the loss of 360 lives. She was later salvaged and scrapped. |
| M-19 | Kriegsmarine | World War II: The M-class minesweeper was bombed off Kiel and was beached. |
| M-504 | Kriegsmarine | World War II: The Type 1916 minesweeper was bombed and sunk by British aircraft at Kiel. |
| Mendoza | Germany | World War II: The cargo ship was bombed and sunk off Pillau by Soviet aircraft. |
| Nikko Maru | Japan | Nikko MaruWorld War II: The troop ship was torpedoed and sunk in the Yellow Sea north-east of Qingdao, China (36°50′N 123°55′E﻿ / ﻿36.833°N 123.917°E﻿ / 36.833; 123.917), by USS Tirante ( United States Navy). A total of 563 passengers, fourteen gunners, sixteen guard force soldiers, two signallers, and 73 crewmen were killed. |
| Ro-56 | Imperial Japanese Navy | World War II: The Kaichū VI type submarine was depth charged and sunk off Okinodaito-Jima, Ryukyu (26°09′N 130°21′E﻿ / ﻿26.150°N 130.350°E﻿ / 26.150; 130.350), by USS Mertz and USS Monssen (both United States Navy). Lost with all 79 hands. |
| H43 Rosario | Kriegsmarine | World War II: The transport ship was damaged in an Allied air raid on Hamburg. |
| Rosnaes | Denmark | World War II: The cargo ship was seized by the Danish Resistance off Copenhagen and ran aground on Ven, Sweden. She was refloated and taken to Landskrona. Nineteen other Danish vessels were also seized and taken to Sweden to prevent their capture by German forces. |
| Samida | United Kingdom | World War II: Convoy TBC 123: The Liberty ship (7,219 GRT, 1943) was torpedoed and sunk in the English Channel off Dungeness, Kent by U-5363 ( Kriegsmarine). |
| Saint Mihiel | United States | World War II: Convoy CU 65: The T2 tanker collided with Nashbulk ( United States) in the Atlantic Ocean (37°44′N 64°40′W﻿ / ﻿37.733°N 64.667°W﻿ / 37.733; -64.667), caught fire and was abandoned. |
| U-677 | Kriegsmarine | World War II: The Type VIIC submarine was destroyed at Hamburg in a British air raid. |
| U-747 | Kriegsmarine | World War II: The Type VIIC submarine was badly damaged by bombs at Hamburg in an American air raid. She was scuttled on 3 May 1945. |
| U-804 | Kriegsmarine | World War II: The Type IXC/40 submarine was sunk in the Kattegat off Gothenburg, Sweden (57°58′N 11°15′E﻿ / ﻿57.967°N 11.250°E﻿ / 57.967; 11.250) by de Havilland Mosquito aircraft of 143 Squadron and 235 Squadron, Royal Air Force with the loss of all 55 crew. |
| U-843 | Kriegsmarine | World War II: The Type IXC/40 submarine was sunk in the Kattegat west of Gothenburg (57°32′N 11°23′E﻿ / ﻿57.533°N 11.383°E﻿ / 57.533; 11.383) by a rocket attack by de Havilland Mosquito aircraft of 235 Squadron, Royal Air Force with the loss of 44 of her 56 crew. |
| U-982 | Kriegsmarine | World War II: The Type VIIC submarine was bombed and destroyed at Hamburg in a Royal Air Force air raid. |
| U-1065 | Kriegsmarine | World War II: The Type VIIC/41 submarine was sunk in the Skaggerak (57°58′N 11°15′E﻿ / ﻿57.967°N 11.250°E﻿ / 57.967; 11.250) by a rocket attack by de Havilland Mosquito aircraft of 143 and 235 Squadrons, Royal Air Force with the loss of all 45 crew. |
| U-2509 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Hamburg in a Royal Air Force air raid. |
| U-2514 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Hamburg in a Royal Air Force air raid. |
| U-2516 | Kriegsmarine | World War II: The Type XXI submarine was sunk at Kiel in a British air raid. The wreck was scrapped post-war. |
| U-2550 | Germany | World War II: The submarine was destroyed in a British air raid on Hamburg. |
| U-3512 | Kriegsmarine | World War II: The Type XXI submarine was bombed and sunk at Kiel in a British air raid. |
| UJ 1101 Alemania | Kriegsmarine | World War II: The submarine chaser was sunk in a Soviet air raid on Hela. |
| Vale | Germany | World War II: The cargo ship was bombed and sunk in the Baltic Sea off Pillau by Soviet aircraft. |
| W-3 | Imperial Japanese Navy | World War II: The No.1-class minesweeper was torpedoed and sunk off Ofunato (39°07′S 141°57′E﻿ / ﻿39.117°S 141.950°E﻿ / -39.117; 141.950), by USS Parche ( United States Navy). |
| USAT Y-17 | United States Army | World War II: Convoy TAC 90: The tanker was sunk in the Scheldt by a Kriegsmarine Seehund midget submarine. |

## 10 April

List of shipwrecks: 10 April 1945 :
| Ship | State | Description |
| CHa-199 | Imperial Japanese Navy | World War II: The CHa-1-class auxiliary submarine chaser was sunk off Matsure Light by mines. |
| General Osorio | Germany | World War II: The accommodation ship was sunk at Kiel, Schleswig-Holstein in a British air raid. She was refloated on 29 August 1947 and scrapped 1947–48. |
| Hansa I | Germany | World War II: The cargo ship was bombed and sunk off Gothenburg, Sweden by British aircraft. |
| Hosei Maru | Japan | World War II: The oiler was torpedoed and sunk in the Sunda Strait (05°25′S 106°39′E﻿ / ﻿5.417°S 106.650°E﻿ / -5.417; 106.650) by HNLMS O 19 ( Royal Netherlands Navy). 9 passengers died. 29 passengers and all 9 crew members are rescued. |
| Ilmenau | Germany | World War II: The cargo ship was torpedoed and sunk in the Baltic Sea west of Liepāja, Latvia by Shch-310 ( Soviet Navy). |
| M 504 | Kriegsmarine | World War II: The minesweeper was sunk at Kiel in a British air raid. |
| HMS ML 102 | Royal Navy | World War II: The motor launch was torpedoed and sunk in the English Channel off Dover, Kent by a Kriegsmarine midget submarine. |
| HMS MTB 710 | Royal Navy | World War II: The Fairmile D motor torpedo boat (90/107 t, 1943) was sunk by a mine off Zara, Italy. 16 crew members were killed. |
| Neuwerk | Germany | World War II: The refugee ship was torpedoed and sunk off the Hel Peninsula, Danzig-West Prussia by S 708 ( Kriegsmarine) with the loss of about 960 lives. There were eight survivors. |
| R-69 | Kriegsmarine | World War II: The Type R-41 minesweeper was sunk off Hel, Danzig-West Prussia by Soviet aircraft. |
| T1 | Kriegsmarine | World War II: The Type 35 torpedo boat was bombed and sunk by aircraft while docked at the Deutsche Werke yard in Kiel. Nine crew were killed. |
| T13 | Kriegsmarine | World War II: The Type 37 torpedo boat was bombed and sunk by aircraft in the Kattegat. 20 crew were killed. |
| U-878 | Kriegsmarine | World War II: The Type IXC/40 submarine was depth charged and sunk in the Bay of Biscay west of Saint-Nazaire, Loire-Inférieure, France (47°35′N 10°33′W﻿ / ﻿47.583°N 10.550°W﻿ / 47.583; -10.550) by HMS Tintagel Castle and HMS Vanquisher (both Royal Navy) with the loss of all 51 crew. |
| Weser | Kriegsmarine | World War II: The incomplete auxiliary aircraft carrier, a former Admiral Hipper-class cruiser, was scuttled at Kiel. |

## 11 April

List of shipwrecks: 11 April 1945 :
| Ship | State | Description |
| Agata Maru | Imperial Japanese Navy | World War II: The Agata Maru-class auxiliary transport was sunk in the Andaman Sea 11 miles (18 km) north east of Car Nicobar (09°21′N 93°00′E﻿ / ﻿9.350°N 93.000°E﻿ / 9.350; 93.000) by Consolidated B-24 Liberator aircraft of 203 Squadron, Royal Air Force. |
| CH-7 | Imperial Japanese Navy | World War II: The No.4-class submarine chaser was sunk in the Andaman Sea 11 miles north east of Car Nicobar (09°21′N 93°00′E﻿ / ﻿9.350°N 93.000°E﻿ / 9.350; 93.000) by Consolidated B-24 Liberator aircraft of 203 Squadron, Royal Air Force. |
| Hinode Maru No. 17 Go | Imperial Japanese Navy | World War II: The auxiliary minesweeper was torpedoed and sunk in the East China Sea by USS Spadefish ( United States Navy). |
| M-376 | Kriegsmarine | World War II: The M 1940-class minesweeper was sunk off Hel, Danzig-West Prussia by Soviet aircraft. |
| Moltkefels | Germany | World War II: The cargo ship was bombed by Soviet aircraft off Hel and was beached with the loss of 500 lives. She was declared a total loss. |
| M 2 | Kriegsmarine | World War II: The minesweeper was sunk in Fedefjord by aircraft of Coastal Command, Royal Air Force. |
| HMS MTB 362 (1) | Royal Navy | World War II: The motor torpedo boat was torpedoed and sunk in the English Channel east of Dungeness, Kent by a Kriegsmarine Seehund midget submarine. |
| Panama | United Kingdom | World War II: The cargo ship (6,650 GRT, 1915) capsized and sank in the Atlantic Ocean (44°30′N 33°30′W﻿ / ﻿44.500°N 33.500°W﻿ / 44.500; -33.500 with the loss of 45 of her 50 crew. |
| Port Wyndham | Germany | World War II: Convoy UC 63B: The cargo ship was torpedoed and sunk in the English Channel east of Dungeness by U-5070 ( Kriegsmarine). |
| Posen | Kriegsmarine | World War II: The hospital ship was bombed and sunk by Soviet aircraft off Hela. 300 killed. |
| Ramona | Sweden | World War II: The fishing lugger was shelled and sunk in the Baltic Sea south of the Utklippan Lighthouse by K-56 ( Soviet Navy). One crew was killed. |
| Tamasono Maru No. 2 Go | Imperial Japanese Navy | The auxiliary minesweeper was lost on this date. |
| Togo Maru | Imperial Japanese Navy | World War II: The auxiliary minesweeper was torpedoed and sunk in the Pacific Ocean off the Japanese coast by USS Parche ( United States Navy). |
| TS-10 | Kriegsmarine | World War II: The minesweeper was bombed and sunk by Soviet aircraft off Hela. |
| UJ 1102 | Kriegsmarine | World War II: The submarine chaser was bombed and sunk off Hela by Soviet aircraft. |

## 12 April

List of shipwrecks: 12 April 1945 :
| Ship | State | Description |
| Dione | Norway | World War II: De Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force bombed and sank the cargo ship (1,596 GRT, 1940) at Porsgrunn, Norway. Raised post-war, repaired and returned to service in April 1946. |
| Kalmar | Germany | World War II: De Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force bombed and sank the cargo ship at Porsgrunn. |
| USS LCS(L)-33 | United States Navy | World War II: Japanese kamikazes sank the landing craft support off Okinawa. Of the 73 men aboard, one was killed, three missing, 29 seriously wounded and 40 were rescued lightly wounded or unhurt. |
| USS LCT-66 | United States Navy | The landing craft tank was lost at Pearl Harbor, Hawaii. |
| USS LST-493 | United States Navy | The landing ship tank ran aground and sank off Plymouth, Devon, United Kingdom (50°20′N 04°09′W﻿ / ﻿50.333°N 4.150°W﻿ / 50.333; -4.150). |
| USS Mannert L. Abele | United States Navy | World War II: A Japanese kamikaze attack using an Aichi D3A or Yokosuka MXY7 Ohka aircraft sank the Allen M. Sumner-class destroyer in the Pacific Ocean 70 nautical miles (130 km) north west of Okinawa (27°15′00″N 136°30′00″E﻿ / ﻿27.25000°N 136.50000°E﻿ / 27.25000; 136.50000). USS LSM(R)-189 and USS LSM(R)-190 (both United States Navy), rescued the survivors. |
| Nordsjø | Norway | World War II: De Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force bombed and sank the coaster (178 GRT, 1868) at Porsgrunn, Norway. Raised post-war, repaired and returned to service. |
| Ro-64 | Imperial Japanese Navy | World War II: A mine sank the Japanese Type L submarine in Hiroshima Bay, Japan while she was on a training mission. Eighty people were killed. |
| Shiratori Maru | Imperial Japanese Navy | World War II: The auxiliary submarine chaser was torpedoed and sunk in the Pacific Ocean south of Honshu by USS Silversides ( United States Navy). |
| German ship Sperrbrecher 36 Eider (2) | Germany | World War II: The target ship was bombed, exploded and capsized at Wilhelmshaven in an Allied air raid. She was later righted. |
| Traust | Norway | World War II: De Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force bombed and sank the coaster (222 GRT, 1921) at Porsgrunn, Norway. Raised post-war, repaired and returned to service. |
| U-486 | Kriegsmarine | World War II: The Type VIIC submarine was torpedoed and sunk in the North Sea north west of Bergen, Norway (60°44′N 4°39′E﻿ / ﻿60.733°N 4.650°E﻿ / 60.733; 4.650) by HMS Tapir ( Royal Navy) with the loss of all 48 crew. |
| U-1024 | Kriegsmarine | World War II: The Type VIIC/41 submarine was damaged in the Irish Sea south of the Isle of Man (53°39′N 5°03′W﻿ / ﻿53.650°N 5.050°W﻿ / 53.650; -5.050 by a Squid attack by HMS Loch Glendhu and HMS Loch More (both Royal Navy) with the loss of nine of her 46 crew. HMS Loch More took U-1024 in tow but she foundered the next day. |
| Wa-104 | Imperial Japanese Navy | World War II: The Wa-101-class auxiliary minesweeper was sunk south west of Bali, Netherlands East Indies (08°55′S 115°15′E﻿ / ﻿8.917°S 115.250°E﻿ / -8.917; 115.250) by HMS Stygian ( Royal Navy). |
| Weserstein | Germany | World War II: Soviet aircraft bombed and sank the cargo ship in the port of Pillau, East Prussia. |
| Will Rogers | United States | World War II: Convoy BB 80: U-1024 ( Kriegsmarine) torpedoed the Liberty ship in the Irish Sea south west of Holyhead, Anglesey, United Kingdom (53°48′N 4°46′W﻿ / ﻿53.800°N 4.767°W﻿ / 53.800; -4.767). Her crew beached their damaged ship at Holyhead. Later repaired and returned to service on 1 December 1945. |
| USS Zellars | United States Navy | World War II: The Allen M. Sumner-class destroyer was severely damaged off Okinawa, Japan by a kamikaze attack. She was out of action for the rest of the war. |

## 13 April

List of shipwrecks: 13 April 1945 :
| Ship | State | Description |
| F 961 | Kriegsmarine | The Type D Marinefährprahm was sunk by Allied fighter-bombers near Fiume, Italy. |
| Kasuga Maru | Imperial Japanese Navy | The auxiliary submarine chaser was sunk on this date. |
| Karlsruhe | Germany | World War II: The cargo ship was bombed and sunk by Soviet Douglas A-20 Havoc aircraft off the Hel Peninsula, Poland. 970 killed. |
| Kosho Maru No. 2 Go | Imperial Japanese Navy | World War II: The auxiliary guard boat was torpedoed and sunk in the Pacific Ocean by USS Parche ( United States Navy). |
| Misago Maru No. 1 | Imperial Japanese Navy | World War II: The auxiliary minesweeper was torpedoed and sunk in the Pacific Ocean off the Japanese coast by USS Parche ( United States Navy). |
| Ostland | Germany | World War II: The cargo ship struck a mine off Anholt, Denmark and was severely damaged. She put in to Aarhus, Denmark. She was repaired post-war and entered Norwegian service in 1945 as Ferngulf. |
| T16 | Kriegsmarine | World War II: The Type 37 torpedo boat was bombed and sunk by Allied aircraft at Fredrikshavn, Denmark. |
| TA45 | Kriegsmarine | World War II: The Ariete-class torpedo boat was sunk in the Adriatic Sea by HMMTB 670 and HMMTB 697 (both Royal Navy). |

## 14 April

List of shipwrecks: 14 April 1945 :
| Ship | State | Description |
| Belgian Airman | Belgium | World War II: The cargo ship was torpedoed and sunk off Chesapeake Bay, Maryland, United States (36°09′N 74°05′W﻿ / ﻿36.150°N 74.083°W﻿ / 36.150; -74.083) by U-857 ( Kriegsmarine) with the loss of one of her 47 crew. Survivors were rescued by Harold A. Jordan ( United States). |
| CD-31 | Imperial Japanese Navy | World War II: Convoy MOSHI-02: The Type C escort ship was torpedoed in the stern by a dud that started a fire, later she capsized and sank in Hiyo Inlet, Saishu Island (33°25′N 126°15′E﻿ / ﻿33.417°N 126.250°E﻿ / 33.417; 126.250), by USS Tirante ( United States Navy). The vessel sank in shallow water and was only partially submerged. Thirty-nine crewmen were killed. 166 survivors were rescued by islanders, later picked up by CD-104 and Aguni (both Imperial Japanese Navy). |
| Goenoeng Telang | Japan | World War II: The fishing vessel was shelled and sunk in the Indian Ocean by HNLMS O 24 ( Royal Netherlands Navy). |
| Juzan Maru | Imperial Japanese Navy | World War II: Convoy MOSHI-02: The Juzan Maru-class auxiliary transport (3,943 GRT 1941) (a.k.a. Jusan Maru) was torpedoed and sunk in Hiyo Inlet, Saishu Island (33°25′N 126°15′E﻿ / ﻿33.417°N 126.250°E﻿ / 33.417; 126.250), by USS Tirante ( United States Navy). Thirty-three crewmen were killed. 166 survivors were rescued by CD-104 and Aguni (both Imperial Japanese Navy). |
| Kako Go | Japan | World War II: The coaster was torpedoed and sunk in the Java Sea by USS Gabilan ( United States Navy). |
| Nomi | Imperial Japanese Navy | World War II: Convoy MOSHI-02: The Mikura-class escort ship was torpedoed causing her forward magazine to explode, she jackknifed, broke in two and sank in Hiyo Inlet, Saishu Island (33°25′N 126°15′E﻿ / ﻿33.417°N 126.250°E﻿ / 33.417; 126.250), by USS Tirante ( United States Navy). The vessel sank in shallow water and was only partially submerged. One hundred and thirty-four crewmen were killed including her captain. 87 survivors were rescued by islanders, later picked up by CD-104 and Aguni (both Imperial Japanese Navy). |
| R-126 | Kriegsmarine | World War II: The Type R-41 minesweeper was sunk in The Great Belt by mines. |
| Shonan Maru No. 1 | Japan | World War II: The coaster was torpedoed and sunk in the Java Sea by USS Gabilan ( United States Navy). |
| TK-184 Morshanskiy Zheleznodorozhnik | Soviet Navy | The D-3-class motor torpedo boat was lost on this date. |
| U-235 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Kattegat (57°44′N 10°39′E﻿ / ﻿57.733°N 10.650°E﻿ / 57.733; 10.650 by T17 ( Kriegsmarine) with the loss of all 47 crew. |
| U-1206 | Kriegsmarine | The Type VIIC submarine was lost in the North Sea (57°24′N 1°37′W﻿ / ﻿57.400°N 1.617°W﻿ / 57.400; -1.617) in a diving accident with the loss of four of her 50 crew. |

## 15 April

List of shipwrecks: 15 April 1945 :
| Ship | State | Description |
| CHa-151 | Imperial Japanese Navy | The CHa-1-class auxiliary submarine chaser was wrecked in the Pescadore Islands. |
| DB 06 Nanny | Kriegsmarine | The guard ship was lost on this date. |
| HMS Ekins | Royal Navy | World War II: The Captain-class frigate (1,432/1,823 t, 1943) was severely damaged by a mine in the North Sea. Declared a constructive total loss. |
| F 569 | Kriegsmarine | The Type C2M minelaying Marinefährprahm was sunk on this date. |
| M-368 | Kriegsmarine | World War II: The M 1940-class minesweeper was sunk in a collision with a U-boat off Southern Norway. |
| Shincho Maru | Japan | World War II: The hulk of the Standard 1TM tanker was raised and resunk at the entrance to Takao Harbour, Formosa. |
| Shonan Maru no. 1 Go | Imperial Japanese Navy | The auxiliary submarine chaser was sunk on this date. |
| U-103 | Kriegsmarine | World War II: The decommissioned Type IXB submarine was bombed and sunk at Kiel, Schleswig-Holstein in an air raid with the loss of one life. |
| U-285 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south west of Ireland (50°13′N 12°48′W﻿ / ﻿50.217°N 12.800°W﻿ / 50.217; -12.800) by HMS Grindall and HMS Keats (both Royal Navy) with the loss of all 44 crew. |
| U-1063 | Kriegsmarine | World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean off Land's End, Cornwall, United Kingdom (50°08′54″N 3°53′24″W﻿ / ﻿50.14833°N 3.89000°W﻿ / 50.14833; -3.89000) by HMS Loch Killin ( Royal Navy) with the loss of 29 of her 46 crew. |
| U-1235 | Kriegsmarine | World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean by USS Frost and USS Stanton (both United States Navy) with the loss of all 57 crew. |
| Venus | Germany | World War II: The target ship was sunk in an Allied air raid on Hamburg. She was refloated post-war, repaired, and returned to Norwegian service on 3 May 1948. |
| Vs-58 | Kriegsmarine | World War II: The Vorpostenboot struck a mine and sank in the Baltic Sea north-east of Kiel, Schleswig-Holstein (54°32′N 10°38′E﻿ / ﻿54.533°N 10.633°E﻿ / 54.533; 10.633). |

## 16 April

List of shipwrecks: 16 April 1945 :
| Ship | State | Description |
| Athelduke | United Kingdom | World War II: Convoy FS 1784: The tanker (8,966 GRT, 1929) was torpedoed and sunk in the North Sea east of Newcastle upon Tyne (55°38′50″N 1°30′30″W﻿ / ﻿55.64722°N 1.50833°W﻿ / 55.64722; -1.50833) by U-1274 ( Kriegsmarine) with the loss of one of her 47 crew. |
| USS Bryant | United States Navy | World War II: The Fletcher-class destroyer was severely damaged off Okinawa, Japan by a kamikaze attack with the loss of 34 of her crew. She was out of action for the rest of the war. |
| CD-73 | Imperial Japanese Navy | World War II: The Type C escort ship was torpedoed and sunk in the Pacific Ocean off Japan (39°36′N 142°05′E﻿ / ﻿39.600°N 142.083°E﻿ / 39.600; 142.083) by USS Sunfish ( United States Navy). |
| Cap Guir | Germany | World War II: The cargo ship was torpedoed and sunk by a Soviet Douglas A-20 Havoc aircraft off Öland, Sweden with the loss of 756 lives. |
| HMCS Esquimalt | Royal Canadian Navy | World War II: The Bangor-class minesweeper (592/690 t, 1942) was torpedoed and sunk in the Atlantic Ocean off Chebucto Head, Nova Scotia (at 44°28′N 63°10′W﻿ / ﻿44.467°N 63.167°W﻿ / 44.467; -63.167), by U-190 ( Kriegsmarine) with the loss of 44 of her 71 crew. She was the last Canadian warship sunk during the war. |
| Gold Shell | United Kingdom | World War II: The tanker (8,208 GRT, 1931) was sunk in the North Sea by a Kriegsmarine Seehund midget submarine. Also reported as having struck a mine and sank at 51°21′09″N 2°53′30″E﻿ / ﻿51.35250°N 2.89167°E﻿ / 51.35250; 2.89167). |
| Goya | Kriegsmarine | World War II: Evacuation of East Prussia: The transport ship (5,230 GRT, 1942) was torpedoed and damaged in the Baltic Sea north of Hela Danzig-West Prussia by L-3 ( Soviet Navy). She broke in two and sank the next day with the loss of between 6,220 and 7,028 lives. There were between 165 and 334 survivors. |
| Lützow | Kriegsmarine | Lutzow on the bottom in shallow water in the Kaiserfahrt on 26 April 1945World War II: The Deutschland-class cruiser was bombed and sunk in shallow water in the Kaiserfahrt by Royal Air Force aircraft with her main deck above water, her anti-aircraft guns remaining in action until they ran out of ammunition on 4 May. She later was raised by the Soviet Union and sunk in weapons testing in July 1947. |
| Manryu Maru | Imperial Japanese Navy | World War II: The auxiliary transport was torpedoed and sunk in the Pacific Ocean off Japan (39°36′N 142°05′E﻿ / ﻿39.600°N 142.083°E﻿ / 39.600; 142.083) by USS Sunfish ( United States Navy). 41 crewmen were killed. |
| Mercator | Germany | World War II: The cargo ship was bombed and damaged at Hela. |
| Monarch | United Kingdom | World War II: The cable ship (1,150 GRT, 1916) was torpedoed and sunk in the North Sea off Orfordness, Suffolk (52°06′04″N 1°50′19″E﻿ / ﻿52.10111°N 1.83861°E﻿ / 52.10111; 1.83861) by U-2324 ( Kriegsmarine) with the loss of three of her 71 crew. |
| PiLB 554 | Kriegsmarine | World War II: The PiLB 41 type landing craft was sunk in the Baltic Sea, either by mines or by shelled Soviet motor torpedo boats. |
| USS Pringle | United States Navy | World War II: The Fletcher-class destroyer was sunk in the Pacific Ocean off Okinawa, Japan by a kamikaze aircraft attack with the loss of 78 of her 336 crew. |
| R-15 | Kriegsmarine | World War II: The Type R-2 minesweeper was sunk in the Adriatic Sea by Royal Navy motor torpedo boats. |
| StuBo-252 | Kriegsmarine | World War II: The StuBo 39 type landing craft was sunk in the Baltic Sea, either by mines or shelled by Soviet motor torpedo boats. |
| Toko Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south of Honshu by USS Sea Dog ( United States Navy). |
| U-78 | Kriegsmarine | World War II: The Type VIIC submarine was shelled and sunk at Pillau, East Prussia by Red Army artillery. |
| U-880 | Kriegsmarine | World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean (47°18′N 30°26′W﻿ / ﻿47.300°N 30.433°W﻿ / 47.300; -30.433) by USS Frost and USS Stanton (both United States Navy) with the loss of all 49 crew. |
| U-1274 | Kriegsmarine | World War II: The Type VIIC/41 submarine was depth charged and sunk in the North Sea north of Newcastle-upon-Tyne, Northumberland, United Kingdom (55°36′N 1°24′W﻿ / ﻿55.600°N 1.400°W﻿ / 55.600; -1.400) by HMS Viceroy ( Royal Navy) with the loss of all 44 crew. |

## 17 April

List of shipwrecks: 17 April 1945 :
| Ship | State | Description |
| Boelke | Luftwaffe | World War II: The Karl Meyer-class seaplane tender was bombed and sunk off the Hel Peninsula by Soviet bombers. |
| HMS MTB 697 | Royal Navy | World War II: The Fairmile D motor torpedo boat (90/107 t, 1943) was sunk by a mine in the Adriatic Sea. |
| Noshiro Maru No. 2 Go | Imperial Japanese Navy | The auxiliary minesweeper was lost on this date. |
| Sonjo Maru | Japan | World War II: The cargo ship was sunk by a mine in the Yangtze near where it empties into the East China Sea on "Middle Ground" off Shanghai, China (31°13′N 121°52′E﻿ / ﻿31.217°N 121.867°E﻿ / 31.217; 121.867). Five troops and eighteen crewmen were killed. |
| Tucuman | Germany | World War II: The cargo ship was bombed and sunk near Hamburg (54°21′N 10°20′E﻿ / ﻿54.350°N 10.333°E﻿ / 54.350; 10.333) in an Allied air raid. |
| V 1207 P. von Rensen | Kriegsmarine | World War II: The Vorpostenboot was sunk in the North Sea off Heligoland by Allied aircraft. |

## 18 April

List of shipwrecks: 18 April 1945 :
| Ship | State | Description |
| Cyrus H. McCormick | United States | World War II: Convoy HX 348: The Liberty ship was torpedoed and sunk in the Atlantic Ocean (48°05′N 6°28′W﻿ / ﻿48.083°N 6.467°W﻿ / 48.083; -6.467) by U-1107 ( Kriegsmarine) with the loss of six of her 53 crew. Survivors were rescued by Gothland ( United Kingdom). |
| Drache | Kriegsmarine | World War II: The artillery training ship was sunk at Fischhausen, Eastern Prussia by Soviet aircraft. |
| Empire Gold | United Kingdom | World War II: Convoy HX 348: The tanker (8,028 GRT, 1941) was torpedoed and sunk in the Atlantic Ocean (47°47′N 6°26′W﻿ / ﻿47.783°N 6.433°W﻿ / 47.783; -6.433) by U-1107 ( Kriegsmarine) with the loss of 43 of her 47 crew. Survivors were rescued by Gothland ( United Kingdom). Empire Gold was on a voyage from Philadelphia, Pennsylvania, United States to Antwerp, Belgium. |
| Filleigh | United Kingdom | World War II: Convoy TAM 118: The cargo ship (4,856 GRT, 1928) was torpedoed and sunk in the English Channel off Dover, Kent (51°19′30″N 1°42′00″E﻿ / ﻿51.32500°N 1.70000°E﻿ / 51.32500; 1.70000) by U-245 ( Kriegsmarine) with the loss of five of her 54 crew. |
| I-56 | Imperial Japanese Navy | World War II: The Type B1 submarine was sunk in the Pacific Ocean off Okinawa (26°42′N 130°38′E﻿ / ﻿26.700°N 130.633°E﻿ / 26.700; 130.633) by USS Collett, four other destroyers (all United States Navy) and United States Navy carrier-based aircraft. |
| Karmt | Norway | World War II: Convoy TAM 118: The cargo ship (4,991 GRT, 1938) was torpedoed and sunk in the English Channel off Dover (51°27′N 1°43′E﻿ / ﻿51.450°N 1.717°E﻿ / 51.450; 1.717) by U-245 ( Kriegsmarine with the loss of four of her 39 crew. Survivors were rescued by HMT Sir Lancelot ( Royal Navy). |
| Pollux | Germany | World War II: The cargo ship was bombed and sunk by aircraft at Hamburg, Germany. Raised 1945 and broken up in Wales in 1947. |
| SAT 5 Robert Müller 6 | Kriegsmarine | World War II: The heavy gun carrier/landing fire support ship was bombed and sunk at Fischhausen by Soviet Douglas A-20 Havoc aircraft. 29 crew were killed. |
| Swiftscout | United States | World War II: The tanker was torpedoed and sunk in the Atlantic Ocean 145 nautical miles (269 km) north east of Cape Henry, North Carolina (37°30′N 73°03′W﻿ / ﻿37.500°N 73.050°W﻿ / 37.500; -73.050) by U-548, U-857 or U-879 (all Kriegsmarine) with the loss of one of her 47 crew. Survivors were rescued by Chancellorsville ( United States). |
| Teizui Maru | Japan | World War II: The government chartered cargo liner was damaged by a mine at the west entrance of the Shimoneseki Strait off Yawata, Japan (34°05′N 130°50′E﻿ / ﻿34.083°N 130.833°E﻿ / 34.083; 130.833) and was beached in a small bay at Kamo-Shima, at the entrance to Yoshimi harbor, Yamaguchi Prefecture and abandoned. |

## 19 April

List of shipwrecks: 19 April 1945 :
| Ship | State | Description |
| Aquila | Kriegsmarine | World War II: The ex-Italian incomplete aircraft carrier was scuttled at Genoa. She was raised in 1946 and scrapped in 1952. |
| CHa-97 | Imperial Japanese Navy | World War II: The CHa-1-class auxiliary submarine chaser was sunk in the Kii Channel (33°32′N 135°23′E﻿ / ﻿33.533°N 135.383°E﻿ / 33.533; 135.383) by USS Sennet ( United States Navy). |
| Daisei Maru | Imperial Japanese Army | World War II: Convoy WA-201: The transport was torpedoed and sunk in the Pacific Ocean off Hokkaido (42°22′N 142°13′E﻿ / ﻿42.367°N 142.217°E﻿ / 42.367; 142.217) by USS Sunfish ( United States Navy). 33 crewmen and two passengers were killed. |
| Dammtor | Germany | World War II: The cargo ship was bombed and sunk by aircraft in the Unterelbe. |
| Hagane Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south of Honshu by USS Sennet ( United States Navy). |
| Isuzu Maru No. 3 | Imperial Japanese Navy | World War II: The auxiliary guard boat was torpedoed and sunk in the Pacific Ocean south of Honshu by USS Cero ( United States Navy). 23 crewmen were killed. |
| Kaiho Maru | Imperial Japanese Navy | World War II: Convoy WA-201: The government Ministry of Agriculture and Forestry owned, IJN requisitioned Kaiho Maru-class auxiliary gunboat, was torpedoed and sunk in the Pacific Ocean off Hokkaido (42°22′N 142°16′E﻿ / ﻿42.367°N 142.267°E﻿ / 42.367; 142.267) by USS Sunfish ( United States Navy). Five crewmen were killed. |
| Kairyu Maru | Imperial Japanese Navy | World War II: The auxiliary gunboat was torpedoed and sunk in the Pacific Ocean south of Honshu by USS Silversides ( United States Navy). |
| Kaiyo Maru | Japan | World War II: The coaster was torpedoed and sunk in the Yellow Sea by USS Trutta ( United States Navy). |
| Kinshu Maru | Japan | World War II: The boat was sunk in the Yellow Sea by USS Trutta ( United States Navy). |
| M-403 | Kriegsmarine | World War II: The M-class minesweeper was bombed, strafed and sunk in the Kattegat, south-east of Anholt, Denmark by de Havilland Mosquito aircraft of 143, 235, 248 and 333 Squadrons, Royal Air Force. |
| Mitsuyama Maru | Japan | World War II: The boat was sunk in the Yellow Sea by USS Trutta ( United States Navy). |
| Nygrunn | Norway | World War II: The coaster (65 GRT, 1943) either struck a mine, or was torpedoed and sunk in the Skaggerak off Egersund, Norway with the loss of seven crew. |
| USS Tolman | United States Navy | The Robert H. Smith-class destroyer ran aground on the Nagunna Reef, Japan. She was refloated on 25 April, repaired and returned to service. |
| U-251 | Kriegsmarine | World War II: The Type VIIC submarine was sunk in the Kattegat (56°37′N 11°51′E﻿ / ﻿56.617°N 11.850°E﻿ / 56.617; 11.850) by a rocket attack by de Havilland Mosquito aircraft of 143, 235 and 248 Squadrons, Royal Air Force with the loss of 39 of her 43 crew. |
| U-548 | Kriegsmarine | World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean south east of Halifax, Nova Scotia, Canada (36°34′N 74°00′W﻿ / ﻿36.567°N 74.000°W﻿ / 36.567; -74.000) by USS Buckley and USS Reuben James (both United States Navy) with the loss of all 58 crew. |
| Westmark | Kriegsmarine | World War II: The minelayer was scuttled at La Spezia, Liguria, Italy. |

## 20 April

List of shipwrecks: 20 April 1945 :
| Ship | State | Description |
| Altengamme | Germany | World War II: The cargo ship was sunk in the Baltic Sea off Saßnitz, Mecklenburg-Vorpommern by Soviet aircraft. |
| Ana Divarica | Kingdom of Yugoslavia (Partizans) | World War II: The barge was sunk in the Sava River between Brcko and Sremska Mitrovica by a mine. |
| Ethel Crawford | United Kingdom | World War II: The trawler (200 GRT, 1919) struck a mine laid by U-218 ( Kriegsmarine) and sank in the Firth of Clyde (55°13′N 5°14′W﻿ / ﻿55.217°N 5.233°W﻿ / 55.217; -5.233) with the loss of all ten crew. |
| Kasja Miletic | Kingdom of Yugoslavia (Partizans) | World War II: The transport was sunk in the Sava River between Brcko and Sremska Mitrovica by a mine. She was carrying wounded, 203 died during the sinking and only 17 rescued. |
| Königsburg | Germany | World War II: The coaster was sunk in the Baltic Sea off Hela, Danzig-West Prussia by Soviet aircraft. |
| V 215 | Kriegsmarine | World War II: The Vorpostenboot was sunk in the Baltic Sea off Hela by Soviet aircraft. |

## 21 April

List of shipwrecks: 21 April 1945 :
| Ship | State | Description |
| Ostmark | Kriegsmarine | World War II: The auxiliary minelayer was bombed and sunk by British aircraft west of Anholt, Denmark. |
| U-636 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean west of Ireland (55°50′N 10°31′W﻿ / ﻿55.833°N 10.517°W﻿ / 55.833; -10.517) by HMS Bazely, HMS Bentinck and HMS Drury (all Royal Navy) with the loss of all 42 crew. |

## 22 April

List of shipwrecks: 22 April 1945 :
| Ship | State | Description |
| Aji Maru | Imperial Japanese Navy | World War II: The patrol boat was torpedoed and sunk in the Pacific Ocean south of Honshu (31°39′N 139°00′E﻿ / ﻿31.650°N 139.000°E﻿ / 31.650; 139.000) by USS Cero ( United States Navy). |
| Ariake Maru | Imperial Japanese Navy | The auxiliary guard boat was lost on this date. |
| HMS LCA 841 | Royal Navy | The landing craft assault (8.5/11.5 t, 1943) was sunk off Holland. |
| USS LCS-15 | United States Navy | World War II: The landing craft support was sunk in the Pacific Ocean off Okinawa, Japan by a Japanese kamikaze attack. Survivors were rescued by USS Van Valkenburgh ( United States Navy). |
| Neukuhren | Germany | World War II: The cargo ship was bombed and sunk by British aircraft off Fredrikshavn, Denmark (57°25′08″N 10°35′20″E﻿ / ﻿57.41889°N 10.58889°E﻿ / 57.41889; 10.58889. The wreck was partly salvaged post-war. |
| Onega | Soviet Union | World War II: Convoy PK 9: The cargo ship was torpedoed and sunk in the Barents Sea (69°40′N 33°18′E﻿ / ﻿69.667°N 33.300°E﻿ / 69.667; 33.300) by U-997 ( Kriegsmarine) with the loss of five of her 42 crew. Survivors were rescued by BO-220 and BO-228 (both Soviet Navy). |
| Pavin Vinogradov | Soviet Union | World War II: The cargo ship was torpedoed and sunk in the Gulf of Alaska by I-180 ( Imperial Japanese Navy). |
| USS SC-1019 | United States Navy | The SC-497-class submarine chaser ran aground and sank in the Yucatan Channel (22°28′N 84°30′W﻿ / ﻿22.467°N 84.500°W﻿ / 22.467; -84.500) north west of Arroyos de Mantua, Cuba. |
| Sverre Helmersen | Norway | World War II: The Liberty ship (7,209 GRT, 1944) struck a mine and was damaged in the North Sea off Ramsgate, Kent, United Kingdom by U-2329 ( Kriegsmarine). She was towed to Falmouth, Cornwall, where she was declared a total loss. Scrapped in 1948. |
| USS Swallow | United States Navy | World War II: The Auk-class minesweeper was sunk in the Pacific Ocean off the Ryukyu Islands, Japan (26°10′N 127°12′E﻿ / ﻿26.167°N 127.200°E﻿ / 26.167; 127.200) by a kamikaze aircraft attack. |
| U-518 | Kriegsmarine | World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean north of the Azores, Portugal (43°26′N 38°23′W﻿ / ﻿43.433°N 38.383°W﻿ / 43.433; -38.383) by USS Carter and USS Neal A. Scott (both United States Navy) with the loss of all 56 crew. |

## 23 April

List of shipwrecks: 23 April 1945 :
| Ship | State | Description |
| USS PE-56 | United States Navy | World War II: The Eagle-class patrol craft was torpedoed and sunk in the Atlantic Ocean 3 nautical miles (5.6 km) off Cape Elizabeth, Maine (near 43°33′N 70°10′W﻿ / ﻿43.550°N 70.167°W﻿ / 43.550; -70.167), by the submarine U-853 ( Kriegsmarine) with the loss of 49 of her 62 crew. Survivors were rescued by the destroyer USS Selfridge ( United States Navy). The wreck was located in 2019, at 43°30′00.31″N 070°05′58.16″W﻿ / ﻿43.5000861°N 70.0994889°W﻿ / 43.5000861; -70.0994889. |
| Ingerseks | Germany | World War II: The cargo ship (4,970 GRT, 1913), which had run agrount the previous day, was bombed and damaged in Risenfjord, Norway by Bristol Beaufighter aircraft of 144, 455 and 489 Squadrons, Royal Air Force. She was declared a total loss. |
| John Carver | United States | The Liberty ship was sunk by the explosion of her fuel tanks whilst under repair at Philadelphia, Pennsylvania. She was declared a constructive total loss, raised and scrapped. |
| Kruckau | Germany | World War II: The cargo ship was scuttled in the Elbe, Germany. |
| Riverton | United Kingdom | World War II: Convoy TBC 135: The cargo ship (7,345 GRT, 1943) was torpedoed and damaged in the Bristol Channel off St. Ives, Cornwall (50°25′N 5°25′W﻿ / ﻿50.417°N 5.417°W﻿ / 50.417; -5.417) by U-1023 ( Kriegsmarine) with the loss of three of her 48 crew. She was beached in St Ives Bay. Later repaired and returned to service. |
| TR 106 | Kriegsmarine | World War II: The RD-class minesweeper was scuttled at Genoa. |
| U-183 | Kriegsmarine | World War II: The Type IXC/40 submarine was sunk by torpedo in the Java Sea (4°57′S 112°52′E﻿ / ﻿4.950°S 112.867°E﻿ / -4.950; 112.867) by USS Besugo ( United States Navy) with the loss of 54 of her 55 crew. |
| UJ 2220 Lago Zuai | Kriegsmarine | World War II: The submarine chaser was scuttled on this date. |
| UJ 2222 | Kriegsmarine | World War II: The submarine chaser, a former Gabbiano-class corvette, was sunk off Genoa by United States Navy PT Boats. |
| VAS 202 | Kriegsmarine | World War II: The VAS 201-class submarine chaser was scuttled at La Spezia, Liguria, Italy. |

## 24 April

List of shipwrecks: 24 April 1945 :
| Ship | State | Description |
| Alpino | Germany | World War II: The Soldati-class destroyer was scuttled at Genoa, Italy. |
| Aoba | Imperial Japanese Navy | World War II: The Furutaka-class cruiser was bombed and heavily damaged, settling on the shallow bottom at Kure Naval Arsenal, by carrier aircraft of Task Force 38. Refloated and rerated as a floating anti-aircraft battery. |
| USS Frederick C. Davis | United States Navy | World War II: Operation Teardrop: The Edsall-class destroyer escort was torpedoed and sunk in the Atlantic Ocean (43°52′N 40°15′W﻿ / ﻿43.867°N 40.250°W﻿ / 43.867; -40.250) by U-546 ( Kriegsmarine) with the loss of 115 of her 209 crew. |
| F 617 | Kriegsmarine | The Type C2 Marinefährprahm was sunk on this date. |
| F 0770 | Kriegsmarine | The MZ-B landing craft was sunk on this date. |
| F 819 | Kriegsmarine | The Type DM minelaying Marinefährprahm was sunk on this date. |
| F 831 | Kriegsmarine | The Type D Marinefährprahm was sunk on this date. Salvaged in 1946 and put in Italian service as MZ 831. |
| F 865 | Kriegsmarine | The Type D Marinefährprahm was sunk on this date. |
| F 890 | Kriegsmarine | The Type DM minelaying Marinefährprahm was sunk on this date. |
| F 2703 | Kriegsmarine | The MZ-A landing craft was sunk on this date. |
| FR 24 | Germany | World War II: The Guépard-class destroyer was scuttled at Genoa. |
| FR 32 | Germany | World War II: The Bourrasque-class destroyer was scuttled at Genoa. |
| FR 37 | Germany | World War II: The Le Hardi-class destroyer was scuttled at Genoa. |
| Ghibli | Germany | World War II: The Ciclone-class torpedo boat was scuttled at Genoa. |
| Huelva | Germany | World War II: The cargo ship was bombed and sunk by Soviet Douglas A-20 Havoc aircraft 8 nautical miles (15 km) west of Liepāja, Latvia. |
| Kronos | Germany | World War II: The cargo ship struck a mine and sank in the Vestfjord, Norway. |
| MAS 505, MAS 515 and MAS 558 | Italian Social Republic Navy | World War II: The MAS boats were scuttled at Imperia, Liguria. |
| MAS 525, MAS 550 and MAS 554 | Italian Social Republic Navy | World War II: The MAS boats were scuttled at Genoa. |
| MAS 556 and MAS 557 | Italian Social Republic Navy | World War II: The MAS 552-class MAS boats were scuttled at Imperia. |
| MAS 561 | Italian Social Republic Navy | World War II: The MAS boat was torpedoed and damaged off Imperia by USS PT-305 and USS PT-307 (both United States Navy). She was consequently scuttled. |
| Monmouth Coast | United Kingdom | World War II: The coaster (878 GRT, 1924) was torpedoed and sunk in the Atlantic Ocean 60 nautical miles (110 km) off Sligo, Ireland by U-1305 ( Kriegsmarine) with the loss of sixteen of her seventeen crew. |
| MS 24 | Italian Social Republic Navy | World War II: The torpedo boat was scuttled at La Spezia, Liguria. |
| MS 51 | Italian Social Republic Navy | World War II: The torpedo boat was scuttled at Genoa. |
| Oldenburg | Kriegsmarine | World War II: The auxiliary minelayer, a converted Sesia-class water tanker (with landing capabilities), was scuttled at Genoa. Raised, repaired and returned to Italian service as a water tanker in 1946. |
| R 162, R 189, R 198 and R 199 | Kriegsmarine | World War II: The minesweepers were scuttled at Genoa. |
| R-212 | Kriegsmarine | World War II: The Type R-151 minesweeper was scuttled at Genoa. |
| RA 253, RA 254, RA 258, RA 262, RA 264, RA 265, RA 266, RA 267, and RA 268 | Kriegsmarine | World War II: The minesweepers, former VAS 231-class submarine chasers, were scuttled at Genoa. |
| RD 101 | Kriegsmarine | World War II: The RD-class minesweeper was scuttled at Genoa. |
| RD 106, RD 107, RD 108, RD 109 and RD 110 | Germany | World War II: The incomplete minesweepers were scuttled at Genoa. |
| RD 102 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Genoa. Salvaged post war and put in Italian service as DV 111. |
| RD 103 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Genoa. Salvaged post war and put in Italian service as DV 112. |
| RD 104 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Genoa. Salvaged post war and put in Italian service as DV 114. |
| RD 105 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Genoa. Salvaged post war and put in Italian service as DV 115. |
| RD 106, RD 107, RD 108, RD 109, and RD 110 | Germany | World War II: The incomplete RD-class minesweepers were scuttled at Genoa. |
| RD 111, RD 112 and RD 113 | Kriegsmarine | World War II: The incomplete RD-class minesweepers were scuttled at Genoa. |
| S 509 and S 510 | Kriegsmarine | World War II: The MAS boats were scuttled at La Spezia. |
| S 511 | Kriegsmarine | World War II: The MAS 552-class MAS boat was scuttled at Imperia, Italy. |
| SA 1 | Kriegsmarine | World War II: The MS 11-class MS boat was scuttled at Genoa. |
| SA 11 | Kriegsmarine | World War II: The MAS 521-class MAS boat was scuttled at Imperia or Genoa, Italy. |
| SA 12 and SA 13 | Kriegsmarine | World War II: The MAS 526-class MAS boats were scuttled at Imperia, Italy. |
| SA 14 | Kriegsmarine | World War II: The MAS 552-class MAS boat was scuttled at Imperia, Italy. |
| SA 15 | Kriegsmarine | World War II: The MAS 552-class MAS boat was scuttled off Liguria, Italy. |
| SA 16 | Kriegsmarine | World War II: The MAS 552-class MAS boat was sunk off Imperia, Italy by USS PT-305 and USS PT-306 (both United States Navy). |
| SA 17 | Kriegsmarine | World War II: The MAS 424-class MAS boat was scuttled at Alta Tirreno. |
| SA 18 | Kriegsmarine | World War II: The MAS 423-class MAS boat was scuttled at Alta Tirreno. |
| SA 19 | Italian Social Republic Navy or Kriegsmarine | World War II: The MAS 501-class MAS boat was scuttled at Genoa, Italy. Raised, repaired and returned to Italian service post war, ceded to the Soviet Union in 1948 as War Reparation. |
| SA 20 | Kriegsmarine | World War II: The MAS 552-class MAS boat was scuttled at Monflacone, Italy. |
| SA 21 | Kriegsmarine | World War II: The MAS 526-class MAS boat was scuttled at Monflacone, Italy. |
| SG 20 | Germany | World War II: The corvette, a former Generali-class destroyer, was scuttled at Genoa. |
| TA31 | Kriegsmarine | World War II: The torpedo boat, a former Freccia-class destroyer, was scuttled at Genoa. |
| TA32 | Kriegsmarine | World War II: The torpedo boat, the former Yugoslav destroyer Dubrovnik, was scuttled at Genoa. |
| TA34 | Germany | World War II: The Le Hardi-class destroyer was scuttled at Genoa. Raised in 1946 and returned to France. She was not repaired and scrapped in 1958. |
| Tübingen | Germany | World War II: The cargo ship was bombed and sunk in the Kattegat by de Havilland Mosquito aircraft of Coastal Command, Royal Air Force. |
| U-108 | Kriegsmarine | End of World War II: The decommissioned Type IXB submarine was scuttled at Stettin, Pomerania. |
| U-546 | Kriegsmarine | World War II: Operation Teardrop: The Type IXC/40 submarine was depth charged, hedgehogged and sunk in the Atlantic Ocean (43°53′N 40°07′W﻿ / ﻿43.883°N 40.117°W﻿ / 43.883; -40.117 by USS Chatelain, USS Flaherty, USS Hayter, USS Hubbard, USS Janssen, USS Keith, USS Neunzer, USS Pillsbury and USS Varian (all United States Navy) with the loss of 26 of her 59 crew. |
| UIT-2 | Kriegsmarine | World War II: The submarine was scuttled at Genoa. |
| UIT-3 | Kriegsmarine | World War II: The submarine was scuttled at Genoa. |
| UJ 206 | Kriegsmarine | World War II: The submarine chaser, a former Gabbiano-class corvette, was scuttled at Venice. Raised, repaired and put in Italian service as Bombarda in 1951. |
| UJ 2221, UJ 2222, UJ 2224, UJ 2227, and UJ 6083 | Kriegsmarine | World War II: The submarine chasers, former Gabbiano-class corvettes, were scuttled at Genoa. |
| UJ 2225 | Kriegsmarine | World War II: The incomplete Ape-class submarine chaser, a former Gabbiano-class corvette, was scuttled at Ansaldo Shipyard, Genoa. |
| UJ 2226 | Kriegsmarine | World War II: The Ape-class submarine chaser, a former Gabbiano-class corvette, was scuttle at Monfalcone. |
| UJ 2228 | Kriegsmarine | World War II: The incomplete Ape-class submarine chaser, a former Gabbiano-class corvette, was scuttled at CRDA Shipyard, Monfalcone. |
| UJ 6084 | Kriegsmarine | World War II: The incomplete Ape-class submarine chaser, a former Gabbiano-class corvette, was scuttled at OTO Shipyard, Livorno. |
| UJ 6086 | Kriegsmarine | World War II: The incomplete Ape-class submarine chaser, a former Gabbiano-class corvette, was scuttled at OTO Shipyard, Livorno. |
| VAS 238 | Kriegsmarine | World War II: The VAS 231-class submarine chaser was scuttled at Genoa. |
| VAS 252, VAS 253 and VAS 263 | Italian Social Republic Navy | World War II: The submarine chasers were scuttled at La Spezia. |

## 25 April

List of shipwrecks: 25 April 1945 :
| Ship | State | Description |
| BK-212 | Soviet Navy | The Project 1125-class armored motor gunboat was sunk on this date. |
| BK-214 | Soviet Navy | The Project 1125-class armored motor gunboat was sunk on this date. |
| F 709 | Kriegsmarine | World War II: The Type MZ-A Marinefährprahm was sunk at La Spezia, Italy by an air raid. |
| F 846 | Kriegsmarine | The Type D Marinefahrprahm was sunk on this date. |
| F 873 | Kriegsmarine | World War II: The Type D Marinefahrprahm was sunk on this date, or on 9 May 1945 by Soviet aircraft. |
| F 969 | Kriegsmarine | World War II: The Type D Marinefahrprahm was sunk incomplete at Monfalcone, Italy. |
| F 970 | Kriegsmarine | World War II: The Type D Marinefahrprahm was sunk incomplete at Monfalcone, Italy. |
| F 1156 | Kriegsmarine | The Type D Marinefahrprahm was sunk on this date. |
| G 202 Jadera | Kriegsmarine | The guard ship was lost on this date. |
| Graf Zeppelin | Kriegsmarine | World War II: The incomplete Graf Zeppelin-class aircraft carrier was scuttled at Stettin, West Pomerania. She was raised and salvaged by the Soviet Union in 1947. |
| Iglesias | Germany | World War II: The cargo ship was scuttled at Genoa, Italy. She was later raised and salvaged. |
| LAT 18 Heimatland | Kriegsmarine | The light gun carrier/landing fire support ship was sunk on this date. |
| R-162, R-198 and R-199 | Kriegsmarine | World War II: The Type R-151 minesweepers were scuttled at Genoa. |
| RA 254, RA 258, RA 264, RA 260 | Kriegsmarine | World War II: The VAS 301-class submarine chasers were scuttled at Genoa. |
| RD 147 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Costaguta shipyard, Genoa. |
| Ro-109 | Imperial Japanese Navy | World War II: The Ro-100-class submarine was sunk in the Pacific Ocean 165 nautical miles (306 km) south southwest of Okino-Daito Jima (21°58′N 129°38′E﻿ / ﻿21.967°N 129.633°E﻿ / 21.967; 129.633) by USS Horace A. Bass ( United States Navy). |
| SG 20 | Kriegsmarine | World War II: The escort ship, a former Generali-class torpedo boat, was scuttled at Oneglia, Liguria, Italy as a blockship. |
| SG 23 | Kriegsmarine | World War II: The escort ship was scuttled at Genoa. |
| TA32 | Kriegsmarine | World War II: The radar picket destroyer/torpedo boat was scuttled at Genoa. |
| U-326 | Kriegsmarine | World War II: The Type VIIC/41 submarine was sunk by torpedo in the Bay west of Brest, Finistère, France (48°12′N 5°42′W﻿ / ﻿48.200°N 5.700°W﻿ / 48.200; -5.700) by a Consolidated B-24 Liberator aircraft of the United States Navy with the loss of all 43 crew. |
| UJ 2231 | Kriegsmarine | World War II: The submarine chaser, a former Élan-class corvette, was scuttled at Genoa. |
| VAS 252, VAS 253 and VAS 263 | Italian Social Republic Navy | World War II: The VAS 301-class submarine chasers were scuttled at Genoa. |
| Vs 343 | Kriegsmarine | World War II: The KSK-2-class naval drifter/Vorpostenboot was scuttled. |
| W-41 | Imperial Japanese Navy | World War II: The W-19-class minesweeper was torpedoed and sunk in the East China Sea north of Keelung, Formosa (26°10′N 121°11′E﻿ / ﻿26.167°N 121.183°E﻿ / 26.167; 121.183) by USS Cod ( United States Navy). There were 75 survivors, one was rescued by USS Cod as a prisoner of war. |

## 26 April

List of shipwrecks: 26 April 1945 :
| Ship | State | Description |
| BK-213 | Soviet Navy | The Project 1125-class armored motor gunboat was sunk on this date. |
| F-248 | Kriegsmarine | World War II: The Type A Marinefahrprahm was sunk in the Baltic Sea by Soviet aircraft. |
| Meshima Maru | Imperial Japanese Navy | The auxiliary minesweeper was lost on this date. |
| Slovenac | Kingdom of Yugoslavia (Partizans) | World War II: The steamer was sunk in the Sava River between Šabac and Sremska Mitrovica by a magnetic mine. Four killed. |
| TK-802 | Soviet Navy | The G-5-class motor torpedo boat was wrecked off Pillau. |
| Unknown, unknown | Kriegsmarine | World War II: Two PiLB 41 type landing craft were sunk in the Baltic Sea off Pillau by Soviet gunboats. |
| Ursa | Germany | World War II: The cargo ship was scuttled at Bremen. She was raised later in the year, repaired and entered Finnish service in 1947 as Margareta. |
| V1114 | Kriegsmarine | World War II: The Vorpostenboot was bombed and sunk in the German Bight by aircraft of the Royal Air Force. |
| Wa-6 | Imperial Japanese Navy | World War II: The No.1-class auxiliary minesweeper was shelled and sunk in the Sunda Sea (04°50′S 115°40′E﻿ / ﻿4.833°S 115.667°E﻿ / -4.833; 115.667) by HMS Sleuth and HMS Solent (both Royal Navy). |

## 27 April

List of shipwrecks: 27 April 1945 :
| Ship | State | Description |
| BK-8 | Soviet Navy | The Project 1125-class armored motor gunboat was sunk on this date. |
| Canada Victory | United States | World War II: The Victory ship was sunk in the Pacific Ocean off Okinawa, Japan (26°23′N 127°41′E﻿ / ﻿26.383°N 127.683°E﻿ / 26.383; 127.683) by a Japanese kamikaze attack. Two gunners and a crewman were killed. Survivors swam to USS Lauderdale ( United States Navy). |
| Kaiho Maru | Japan | World War II: The cargo ship struck a mine and sank in the Sea of Japan (34°00′N 130°50′E﻿ / ﻿34.000°N 130.833°E﻿ / 34.000; 130.833). |
| HMS Redmill | Royal Navy | World War II: The Captain-class frigate (1,432/1,823 t, 1943) was torpedoed and severely damaged in the Atlantic Ocean west of Ireland (54°32′N 10°36′W﻿ / ﻿54.533°N 10.600°W﻿ / 54.533; -10.600) by U-1105 ( Kriegsmarine) with the loss of 32 of her 186 crew. She was towed to Lisahally, County Londonderry by HMS Rupert ( Royal Navy) but was declared a constructive total loss. |
| Sperrbrecher 167 | Kriegsmarine | World War II: The Sperrbrecher struck a mine and sank in the North Sea off Cuxhaven, Schleswig-Holstein (53°59.3′N 8°31.6′E﻿ / ﻿53.9883°N 8.5267°E﻿ / 53.9883; 8.5267). |
| Yusen Maru No. 31 Go | Imperial Japanese Navy | The auxiliary submarine chaser was sunk on this date. |

## 28 April

List of shipwrecks: 28 April 1945 :
| Ship | State | Description |
| HMS BYMS 2053 | Royal Navy | World War II: The BYMS-class minesweeper (207/320 t, 1943) struck a mine and sank off Porto Corsini, Ravenna, Italy. |
| CH-17 | Imperial Japanese Navy | World War II: The No.13-class submarine chaser was torpedoed and sunk off Tomei Harbor, Fukue Shima, Goto Archipelago, (32°25′N 128°46′E﻿ / ﻿32.417°N 128.767°E﻿ / 32.417; 128.767) by USS Springer ( United States Navy). |
| Emily Sauber | Germany | World War II: The cargo ship was torpedoed and sunk in the Baltic Sea by TK-133 ( Soviet Navy). She was refloated post-war, repaired and entered Polish service as Kielce. |
| Hashima | Imperial Japanese Navy | World War II: The Hashima-class cable layer was torpedoed and sunk off Kii Suido south south east of Mikizaki (33°55′N 136°18′E﻿ / ﻿33.917°N 136.300°E﻿ / 33.917; 136.300) by USS Sennet ( United States Navy). |
| T-146 | Imperial Japanese Navy | World War II: The No.101-class landing ship was torpedoed and sunk off Cape Ose, south of the Goto Islands, (32°24′N 128°00′E﻿ / ﻿32.400°N 128.000°E﻿ / 32.400; 128.000) by USS Trepang ( United States Navy). |
| U-56 | Kriegsmarine | World War II: The Type IIC submarine was sunk in a Royal Air Force air raid on Kiel, Schleswig-Holstein with the loss of six of her 25 crew. |

## 29 April

List of shipwrecks: 29 April 1945 :
| Ship | State | Description |
| Daishu Maru | Japan | World War II: The cargo ship, a converted Standard Type 2A tanker, (a.k.a. Taishu Maru), was sunk by torpedo in the Pacific Ocean east of Kamaishi, Honshu (39°12′N 142°20′E﻿ / ﻿39.200°N 142.333°E﻿ / 39.200; 142.333) by USS Cero ( United States Navy). Her captain and 29 crewmen were killed. |
| F5 | Kriegsmarine | World War II: The F-class escort ship struck a mine en route from Copenhagen, Denmark, to Swinemünde, Pomerania. Collided with a wreck while under tow and sank. |
| I-44 | Imperial Japanese Navy | World War II: The Kaidai-class submarine was depth charged, torpedoed and sunk in the Pacific Ocean 220 nautical miles (410 km) south east of Okinawa (24°15′N 131°16′E﻿ / ﻿24.250°N 131.267°E﻿ / 24.250; 131.267) by a Grumman TBF Avenger from USS Tulagi ( United States Navy). |
| Otome Maru | Imperial Japanese Navy | World War II: The guard ship was torpedoed and sunk by USS Besugo ( United States Navy) north of Matashiri Island. |
| Petropolis | Germany | World War II: The cargo ship was bombed by aircraft at Hamburg, Germany. Beached at Juelsand in May 1945. Broken up in situ in 1946. |
| Quito | Kriegsmarine | World War II: The submarine tender/supply ship (a.k.a. Teiju Maru and Kito Go) was torpedoed and sunk in the Java Sea off Tanjung Puting Borneo (04°11′S 111°17′E﻿ / ﻿4.183°S 111.283°E﻿ / -4.183; 111.283) by USS Bream ( United States Navy). |
| Ro-46 | Imperial Japanese Navy | World War II: The Kaidai-class submarine was sunk in the Pacific Ocean 220 nautical miles (410 km) southeast of Okinawa (24°15′N 131°16′E﻿ / ﻿24.250°N 131.267°E﻿ / 24.250; 131.267) by aircraft from USS Tulagi ( United States Navy). Lost with all 86 hands. |
| HMS Sheldrake | Royal Navy | World War II: The Kingfisher-class sloop was damaged/sunk in the North Sea by a Kriegsmarine Seehund midget submarine. |
| Takasago Maru | Japan | World War II: The tanker was torpedoed and sunk in the Gulf of Siam by HMS Tradewind ( Royal Navy). |
| Teisho Maru | Imperial Japanese Navy | World War II: The auxiliary naval vessel was torpedoed and sunk in the Java Sea by USS Gabilan ( United States Navy). |
| U-286 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Barents Sea (69°29′N 33°37′E﻿ / ﻿69.483°N 33.617°E﻿ / 69.483; 33.617) by HMS Anguilla, HMS Cotton and HMS Loch Insh (all Royal Navy) with the loss of all 51 crew. |
| U-307 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Barents Sea (69°24′N 33°44′E﻿ / ﻿69.400°N 33.733°E﻿ / 69.400; 33.733) by HMS Loch Insch ( Royal Navy) with the loss of 37 of her 51 crew. |
| U-1017 | Kriegsmarine | World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean north west of Ireland (56°04′N 11°06′W﻿ / ﻿56.067°N 11.100°W﻿ / 56.067; -11.100) by a Consolidated B-24 Liberator aircraft of 120 Squadron, Royal Air Force with the loss of all hands (34 known dead). |

## 30 April

List of shipwrecks: 30 April 1945 :
| Ship | State | Description |
| HMS Goodall | Royal Navy | World War II: Convoy RA 66: The Captain-class frigate (1,192/1,436 t, 1943) was scuttled by gunfire from the frigate HMS Anguilla ( Royal Navy) in the Barents Sea. HMS Goodall had been torpedoed and severely damaged by U-286 ( Kriegsmarine) with the loss of 112 of her 156 crew on 29 April 1945. |
| Kunikawa Maru | Imperial Japanese Navy | World War II: The transport ship was bombed and sunk in the Indian Ocean (1°15′S 116°50′E﻿ / ﻿1.250°S 116.833°E﻿ / -1.250; 116.833) by United States Army Air Force aircraft. |
| M 455 | Kriegsmarine | World War II: The minesweeper was sunk in a British air raid on Cuxhaven, Schleswig-Holstein. |
| Miho Maru | Japan | World War II: Convoy MOSI-05: The cargo ship was torpedoed and sunk in the Yellow Sea by USS Trepang ( United States Navy). |
| Nuwajima | Imperial Japanese Navy | World War II: The Hirashima-class minelayer (a.k.a. Nuwashima) was bombed and damaged by Boeing B-29 Superfortress aircraft of the 314th Bomb Group. Her stern was hit and blown off and she was beached on Onyu Shima (32°56′N 131°05′E﻿ / ﻿32.933°N 131.083°E﻿ / 32.933; 131.083). Fourteen crewmen were killed. Scrapped post-war. |
| RD 127 | Kriegsmarine | World War II: The RD-class minesweeper was demolished by her crew at Monfalcone. |
| RD 128 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was demolished at Celli shipyard, Venice. |
| RD 129 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was demolished at Celli shipyard, Venice. |
| RD 130 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was demolished at Celli shipyard, Venice. |
| TA43 | Kriegsmarine | World War II: The Beograd-class destroyer was sunk by Yugoslav artillery, or scuttled, at Trieste, Italy. |
| U-879 | Kriegsmarine | World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean east of Cape Hatteras, North Carolina, United States (36°34′N 74°00′W﻿ / ﻿36.567°N 74.000°W﻿ / 36.567; -74.000) by USS Bostwick, USS Coffman, USS Natchez, and USS Thomas (all United States Navy) with the loss of all 52 crew. |
| U-1107 | Kriegsmarine | World War II: The Type VIIC/41 submarine was bombed and sunk in the Bay of Biscay west of Brest, Finistère, France (48°00′N 6°30′W﻿ / ﻿48.000°N 6.500°W﻿ / 48.000; -6.500) by a United States Navy Consolidated PBY Catalina aircraft of Squadron VP-63 with the loss of 37 crew. |
| U-3525 | Kriegsmarine | World War II: The Type XXI submarine was bombed and damaged in the western Baltic Sea. She was consequently scuttled at Kiel, Schleswig-Holstein on 3 May. |
| Yuna Maru | Japan | World War II: The tanker struck a mine and sank in the Gulf of Siam off Linga, Malaya. |
| Yuno Maru | Imperial Japanese Army | World War II: The tanker struck a mine and sank in the Berhala Strait, Sumatra (00°58′S 104°31′E﻿ / ﻿0.967°S 104.517°E﻿ / -0.967; 104.517). A badly burned Japanese sailor, probably from Yuno Maru, was rescued by USS Besugo ( United States Navy). |

## Unknown date

List of shipwrecks: Unknown date 1945 :
| Ship | State | Description |
| Adler | Kriegsmarine | World War II: The training ship was sunk by Allied bombers at Kiel. |
| CHa-199 | Imperial Japanese Navy | World War II: The CHa-1-class auxiliary submarine chaser was sunk off Matsure Light, Japan by a mine sometime in April. |
| Detlef | Germany | World War II: The cargo ship was sunk at Kiel during and Allied air raid. The wreck was raised in 1948 and scrapped. |
| F 170 | Kriegsmarine | The Sperrbrecher, a converted Type A Marinefährprahm, was sunk sometime in April. |
| F 258AM | Kriegsmarine | The Type AM minelaying Marinefährprahm was sunk sometime in April. |
| F 266AM | Kriegsmarine | The Type AM minelaying Marinefährprahm was sunk sometime in April. |
| F 873 | Kriegsmarine | World War II: The Type D Marinefahrprahm was sunk by Soviet Douglas A-20 Havoc aircraft on the Renoy River on 9 May, or on 25 April 1945 by Soviet aircraft. |
| Hanna Cords | Germany | World War II: The cargo ship was scuttled as a blockship at Stettin. |
| Hummel | Germany | The cargo ship was wrecked at Stettin, Pomerania. Wreck scuttled in 1947. |
| Kibitsu Maru | Imperial Japanese Army | World War II: The Kibitsu Maru-class depot ship sprang a major leak near Kobe and was beached to prevent sinking sometime in April. Refloated in April and was under repair from April–July before returning to service. |
| LAT 30 Prinses Beatrix | Kriegsmarine | World War II: The light gun carrier/landing fire support ship was sunk on 14 April, or sunk on 8 May by Soviet aircraft in the Baltic Sea. |
| HMS LCA 1346 | Royal Navy | The landing craft assault reported lost in the Mediterranean Sea during April. |
| HMS LCM 1319 and HMS LCM 1327 | Royal Navy | The landing craft mechanized were lost off the Arakan Coast, Burma sometime in April. |
| M 455 | Kriegsmarine | World War II: The Type 1940 minesweeper was bombed and sunk sometime in April in an air raid. Raised and repaired post war. |
| Mario Ruta | Italian Social Republic | World War II: The cargo liner was scuttled at Trieste. Wreck scrapped in 1946. |
| HMS MGB 99 | Royal Navy | The VTB-11-class motor gun boat was lost sometime in April. |
| Nymphe | Kriegsmarine | World War II: The Type 1915 minesweeper was scuttled sometime in April. |
| PiLB 43/II | Kriegsmarine | World War II: The PiLB 43 type landing craft was sunk by Soviet bombers sometime in April. |
| R-224 | Kriegsmarine | World War II: The Type R-218 minesweeper was sunk at Swinemünde, Pomerania by Soviet aircraft sometime in April. |
| RD 135 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at OTO shipyard, Leghorn in late April. |
| RD 136 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Picchiotti shipyard, Limite Sal Arno in late April. |
| RD 140 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Picchiotti shipyard, Limite Sal Arno in late April. |
| RD 147 | Kriegsmarine | World War II: The incomplete RD-class minesweeper was scuttled at Castaguta shipyard, Genoa in late April. |
| RA 261 | Kriegsmarine | World War II: The VAS 231-class submarine chaser was scuttled at La Spezia, Liguria, Italy sometime in April. |
| SA 2 and SA 3 | Kriegsmarine | World War II: The MS 11-class MS boats were scuttled at La Spezia sometime in April. |
| SA 4 | Kriegsmarine | World War II: The MS 51-class MS boat was scuttled at La Spezia sometime in April. |
| USS Snook | United States Navy | The Gato-class submarine was lost in the South China Sea between 8 and 20 April, cause unknown. |
| U-246 | Kriegsmarine | World War II: The Type VIIC submarine was lost on patrol in the Irish Sea south of the Isle of Man with the loss of all 48 crew. |
| U-325 | Kriegsmarine | World War II: The Type VIIC/41 submarine was lost on patrol on or after 7 April with the loss of all hands, apparently after striking a mine. Her wreck was discovered in the English Channel at 49°48′17″N 5°12′23″W﻿ / ﻿49.804717°N 5.206383°W﻿ / 49.804717; -5.206383 in 2006. |
| U-396 | Kriegsmarine | The Type VIIC submarine was lost on patrol after 11 April with the loss of all 45 crew due to a problem with her hydroplanes. |
| U-398 | Kriegsmarine | World War II: The Type VIIC submarine was lost on patrol in the Atlantic Ocean or Arctic Sea on or after 17 April with the loss of all 43 crew. |
| U-548 | Kriegsmarine | World War II: The Type IX submarine was depth charged and sunk in the Atlantic Ocean off Cape Henry, Virginia, United States (36°34′N 74°00′W﻿ / ﻿36.567°N 74.000°W﻿ / 36.567; -74.000) by USS Bostwick, USS Coffman, USS Natchez and USS Thomas (DE-102) (all United States Navy). Various dates are given by different sources; 19, 29 and 30 April. |
| U-857 | Kriegsmarine | World War II: The Type IXC/40 submarine was lost on patrol in the Atlantic Ocean off the east coast of the United States after 14 April with the loss of all 59 crew. Cause unknown. |
| U-1055 | Kriegsmarine | World War II: The Type VIIC submarine was lost on patrol in the Atlantic Ocean or English Channel after 23 April with the loss of all 49 crew. Cause unknown. |
| VAS 203 and VAS 225 | Kriegsmarine | World War II: The VAS 201-class submarine chasers were scuttled at Alto Tirino, Abruzzo. |