List of shipwrecks in June 1944

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

1 June

 * SS Hans Leonhardt (1938) (🇩🇪 Germany): World War II: The cargo ship was bombed and sunk by aircraft off Stad, Norway.
 * USS Herring (SS-233) : World War II: The Gato-class submarine was shelled and sunk off Matsuwa, Kuril Islands by Japanese shore-based artillery with the loss of all 60 crew.
 * SS Hiburi Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk at Matsuwa by USS Herring (SS-233) . 32 crewmen and 97 soldiers killed.
 * SS Iwaki Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk at Matsuwa by USS Herring (SS-233) . 30 crewmen and 20 soldiers killed.
 * USS Shahaka (YTB-368) :World War II: The large Harbor Tug collided in the Pacific Ocean (27.35°N, -136.48333°W) with floating dock ABSD-2 and sank.

2 June

 * JAPANESE ESCORT Awaji : World War II: The  was torpedoed and sunk in the Bashi Strait off Yashu Island (22.56667°N, 121.85°W)  by USS Picuda (SS-382) . 76 crewmen killed.
 * SS Chiyo Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the Mariana Islands by USS Shark (SS-314).
 * Schnelles Geleitboot 11 : World War II: The escort ship was torpedoed and sunk by HMS Ultor (P53) off Port Vendres, France.

3 June

 * GS U-477 : World War II: The Type VIIC submarine was depth charged and sunk in the Norwegian Sea west of Trondheim, Sør-Trøndelag, Norway (63.98333°N, 1.61667°W) by a Consolidated PBY Catalina aircraft of 162 Squadron, Royal Canadian Air Force with the loss of all 51 crew.

4 June

 * SS Katsukawa Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean (19.75°N, 138.25°W) off the Mariana Islands by USS Shark (SS-314) . Aprx. 1500 killed.
 * HMS LCT-2498 : World War II: The Landing Craft, Tank foundered in the English Channel. Thirty-one American soldiers were rescued by USS Barton (DD-722).
 * GERMAN MINESWEEPER M-37 : World War II: The minesweeper was torpedoed and sunk in the Gulf of Finland, off Voka, Estonia.

5 June

 * SS Ashizuri : World War II: The tanker was torpedoed and sunk in the Sulu Sea at the north end of the Sibutu Passage off Tawi Tawi, Philippine Islands. by USS Puffer (SS-268).
 * CHANT 63 (🇬🇧 United Kingdom):The Channel Tanker capsized and sank in the North Sea off Flamborough Head, Yorkshire.
 * SS Helen Moller (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean 300 nmi south south east of Addu Atoll, Maldives (-4.46667°N, 74.75°W) by GS U-183 with the loss of four of her 73 crew. Survivors were rescued by MV Empire Confidence (🇬🇧 United Kingdom) and HMS Okapi.
 * USS LCT-428 (LCT-428) : World War II: The LCT (Mk 5)-class Landing Craft, Tank was lost in the English Channel.
 * USS Osprey (AM-56) : World War II: The Raven-class minesweeper struck a mine and sank in the English Channel (50.2°N, -1.33333°W).
 * SS Pillory (🇵🇦 Panama): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off Puerto Rico (18.41667°N, -67.28333°W) by GS U-539 with the loss of 25 of her 47 crew. Survivors were rescued by USCGC Crawford (WPG-134) and USCGC CG-83310 (both ).
 * SS Takasaki : World War II: The tanker was torpedoed and sunk in the Sulu Sea at the north end of the Sibutu Passage off Tawi Tawi, Philippine Islands by USS Puffer (SS-268).
 * SS Takaoka Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean off the Mariana Islands (18.66667°N, 140.58333°W) by USS Shark (SS-314).
 * SS Tamahime Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the Mariana Islands (18.66667°N, 140.58333°W) by USS Shark (SS-314).

6 June

 * JAPANESE ESCORT SHIP CD-15 : World War II: The  was torpedoed and sunk in the South China Sea 160 miles off Cape St. Jacques, French Indochina, south of Nishinotorishima (8.95°N, 109.28333°W) by USS Raton (SS-270) . 104 crewmen, including the C.O., were killed, 34 survivors rescued by  JAPANESE ESCORT SHIP CD-8 and JAPANESE ESCORT SHIP CD-20 both.
 * HMS Centurion (1911) : World War II: Operation Neptune: The target ship, a former King George V-class battleship, was sunk as a breakwater in the English Channel off Normandy, France.
 * USS Corry (DD-463) : World War II: Operation Overlord: The Gleaves-class destroyer was shelled and sunk off Utah Beach, Normandy (49.51389°N, -1.19167°W) by German shore-based artillery with the loss of 24 of her 276 crew. Survivors were rescued by USS Butler (DD-636), USS Fitch (DD-462), USS Hobson (DD-464) and USS PT-199 (all ).
 * SS Empire Bunting (🇬🇧 United Kingdom): World War II: Operation Neptune: The Design 1105 cargo ship was sunk as a breakwater at Juno Beach, Normandy. The wreck was raised in 1947 and scrapped.
 * USS LCI(L)-85 (LCI(L)-85) : World War II: The LCI-1-class Landing Craft, Infantry(large) struck a mine and then was shelled and sunk off Normandy.
 * USS LCI(L)-91 (LCI(L)-91) : World War II: The LCI-1-class Landing Craft, Infantry(large) struck a mine and sank off Normandy.
 * USS LCI(L)-92 (LCI(L)-92) : World War II: The LCI-1-class Landing Craft, Infantry was shelled, burned, and abandoned off Normandy.
 * USS LCI(L)-93 (LCI(L)-93) : World War II: The LCI-1-class Landing Craft, Infantry(large) was holed by a submerged object, then shelled, beached, and abandoned off Normandy.
 * HMS LCI(L)-185 (LCI(L)-185) : World War II: The LCI-1-class Landing Craft, Infantry(large) was lost off Normandy.
 * USS LCI(L)-232 (LCI(L)-232) : World War II: The LCI-1-class Landing Craft, Infantry(large) was lost off Normandy.
 * USS LCI(L)-416 (LCI(L)-416) : World War II: The LCI-351-class Landing Craft, Infantry struck a mine and sank off Omaha Beach, Normandy.
 * USS LCI(L)-497 (LCI(L)-497) : World War II: The LCI-351-class Landing Craft, Infantry(large) struck a mine and sank off Omaha Beach, Normandy.
 * USS LCI(L)-553 (LCI(L)-553) : World War II: The LCI-351-class Landing Craft, Infantry(large) was shelled and sunk off Omaha Beach, Normandy.
 * USS LCT-22 (LCT-22) : World War II: The LCT Mk 5-class Landing Craft, Tank was lost off Normandy.
 * USS LCT-25 (LCT-25) : World War II: The LCT Mk 5-class Landing Craft, Tank was shelled, burned, and sunk off Normandy. 2 crewmen killed.
 * USS LCT-27 (LCT-27) : World War II: The LCT Mk 5-class Landing Craft, Tank ran aground, then capsized and sank in shallow water off Normandy. Heavy weather pushed the wreck ashore. Survivors rescued by USS LCT-207 (LCT-207).
 * USS LCT-30 (LCT-30) : World War II: The LCT Mk 5-class Landing Craft, Tank was shelled and sunk off Normandy. 1 crewman killed.
 * USS LCT-52 (LCT-52) : World War II: The LCT Mk 5-class Landing Craft, Tank was shelled and sunk off Normandy.
 * USS LCT-197 (LCT-197) : World War II: The LCT Mk 5-class Landing Craft, Tank capsized and sank from mine damage off Omaha Beach, Normandy.
 * USS LCT-229 (LCT-229) : World War II: The LCT Mk 5-class Landing Craft, Tank was lost off Normandy.
 * USS LCT-294 (LCT-294) : World War II: The LCT Mk 5-class Landing Craft, Tank was damaged by a mine and scuttled off Omaha Beach, Normandy. Survivors rescued by USS LCT-20 (LCT-20).
 * USS LCT-305 (LCT-305) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Omaha Beach, Normandy.
 * USS LCT-332 (LCT-332) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Normandy.
 * USS LCT-362 (LCT-362) : World War II: The LCT Mk 5-class Landing Craft, Tank sank in heavy weather off Normandy.
 * USS LCT-364 (LCT-364) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine and a shell off Omaha Beach, Normandy.
 * USS LCT-397 : World War II: Operation Neptune: The Landing Craft, Tank struck a mine and sank off Utah Beach.
 * USS LCT-555 (LCT-555) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Normandy. Scrapped.
 * USS LCT-703 (LCT-703) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Normandy.
 * HMS LCT-2039 (LCT-2039) : World War II: The LCT Mk 5-class Landing Craft, Tank swamped and capsized in heavy weather off Gold Beach, Normandy. Scuttled by R.N. ships. 2 crewmen killed.
 * HMS LCT-2191 (LCT-2191) : World War II: The LCT Mk 5-class Landing Craft, Tank was shelled and sunk by German 88MM artillery off Sword Beach, Normandy.
 * HMS LCT-2283 (LCT-2283) : World War II: The LCT Mk 5-class Landing Craft, Tank was lost off Normandy.
 * HMS MTB 248 : World War II: The White 73'-class Motor Torpedo Boat was sunk in a collision in the English Channel.
 * USS Meredith (DD-726) : World War II: Operation Overlord: The Allen M. Sumner-class destroyer struck a mine and sank in the English Channel off Utah Beach with the loss of at least seven crew. Salvage efforts were abandoned on 9 June following Luftwaffe bombing which split the ship in two. USS Bates (DE-68) rescued 163 survivors from her 336 crew. The wreck was raised and scrapped in September 1960.
 * JAPANESE DESTROYER Minazuki : World War II: The Mutsuki-class destroyer was torpedoed and sunk in the Sibutu Passage (4.08333°N, 119.5°W) by USS Harder (SS-257) with the loss of 109 of her 154 crew. Survivors were rescued by JAPANESE DESTROYER Wakatsuki.
 * USS PC-1261 : World War II: The PC-461-class submarine chaser was shelled and sunk by German coast artillery off Normandy. (49.5°N, -1.16667°W).
 * SS Sambut (🇬🇧 United Kingdom): World War II: The Liberty ship was shelled and sunk in the Strait of Dover by German artillery.
 * HNOMS Svenner (G03) : World War II: The S-class destroyer was torpedoed and sunk in the English Channel off Normandy with the loss of 35 of her 219 crew.

7 June

 * SS Empire Defiance (🇬🇧 United Kingdom): World War II: Operation Neptune: The cargo ship was sunk as a breakwater at Sword Beach, Normandy, France. The wreck was raised in 1951 and scrapped.
 * USAT Francis C. Harrington (U.S. Army): World War II: Operation Overlord: The transport ship struck a mine and sank off Normandy. Twenty-six wounded were rescued by USS Blessman (DE-69).
 * JAPANESE DESTROYER Hayanami : World War II: The Yūgumo-class destroyer was torpedoed and sunk in the Sibutu Passage (4.71667°N, 120.05°W) by USS Harder (SS-257) with the loss of 208 of her 253 crew. Survivors were rescued by JAPANESE DESTROYER Urakaze.
 * USS LCI(L)-416 (LCI(L)-416) : World War II: The LCI Mk 5-class Landing Craft, Infantry(Large) was sunk by mine off Omaha Beach, Normandy.
 * HMS LCT-427 (LCT-427) : World War II: The LCT Mk 3-class Landing Craft, Tank was sunk in a collision with HMS Rodney (29)   off Southampton.
 * USS LCT-458 (LCT-4548) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Utah Beach, Normandy. 35 members of B Battery, 29th Field Artillery Battalion were killed and 22 wounded.
 * USS LCT-486 (LCT-486) : World War II: The LCT Mk 5-class Landing Craft, Tank was sunk by mine off Normandy.
 * SS Manchester Spinner (🇬🇧 United Kingdom): World War II: Operation Neptune: The cargo ship was sunk as a breakwater, Normandy.
 * SS Sirehei (🇬🇧 United Kingdom): World War II: Operation Overlord: The cargo ship was sunk as a breakwater as part of Gooseberry 3, Gold Beach, Calvados, France.
 * USS Susan B. Anthony (AP-72) : World War II: Operation Overlord: The transport ship struck a mine and sank in the English Channel off Normandy (49.82333°N, -0.705°W). All 2,689 people were rescued by USS Blessman (DE-69), USS Pinto (AT-90) and a third ship (all ).
 * USS Tide (AM-125) : World War II: Operation Overlord: The Auk-class minesweeper struck a mine and sank in the English Channel off Normandy (49.61639°N, -1.08306°W).
 * GS U-629 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel west of Breste, Finistère, France (48.56667°N, -5.38333°W) by a Consolidated B-24 Liberator aircraft of 53 Squadron, Royal Air Force with the loss of all 51 crew.
 * GS U-955 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay north east of Cape Ortegal, Spain (45.21667°N, -8.5°W) by a Short Sunderland aircraft of 201 Squadron, Royal Air Force with the loss of all 50 crew.
 * GS U-970 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay west of Bordeaux, Gironde, France (45.25°N, -4.16667°W) by a Short Sunderland aircraft of 228 Squadron, Royal Air Force with the loss of 38 of her 52 crew.

8 June

 * SS Artemas Ward (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 2, Omaha Beach, Basse-Normandie, France. She foundered in storms between 19 and 22 June.
 * SS Benjamin Contee (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 1, Utah Beach, Manche, France. She later foundered in a storm.
 * CHANT 61 (🇬🇧 United Kingdom): The Channel Tanker capsized and sank in the English Channel off Normandy.
 * SS George S. Wassen (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 1, Utah Beach. She later foundered in a storm.
 * SS George W. Childs (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 2, Omaha Beach.
 * JAPANESE DESTROYER Harusame : World War II: The Shiratsuyu-class destroyer was bombed and sunk in the Pacific Ocean 30 nmi north west of Manokwari, New Guinea (-0.08333°N, 132.75°W) by North American B-25 Mitchell aircraft of the United States Army Air Forces with the loss of 74 of her 226 crew.
 * USS Glennon (DD-620) : World War II: The Gleaves-class destroyer struck a mine and was damaged in the Baie de la Seine off Quinéville, Manche, France. Salvage efforts were abandoned the next day due to shelling from German shore-based artillery and she sank on 10 June.
 * SS James Iredell (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 2, Omaha Beach. She was later wrecked in a storm.
 * SS James W. Marshall (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 2, Omaha Beach. She was later wrecked in a storm.
 * JAPANESE DESTROYER Kazagumo : World War II: The Yūgumo-class destroyer was torpedoed and sunk in the Davao Gulf (6.05°N, 125.95°W) by USS Hake (SS-256) with the loss of 95 of her 228 crew. Survivors were rescued by JAPANESE DESTROYER Asagumo.
 * SS Kennichi Maru (🇯🇵 Japan): World War II: The ship was torpedoed and sunk in the East China Sea by USS Tang (SS-306).
 * HMS LCT-875 (LCT-875) : World War II: The LCT Mk 4-class Landing Craft, Tank was lost on this date, no details available.
 * USS LST-499 (LCT-499) : World War II: The LCT Mk 2-class Landing Ship, Tank was sunk by mine off Normandy (49.5°N, -1.16667°W).
 * HMS Lawford (K514) : World War II: The Captain class frigate was sunk by a German glide bomb off Juno Beach, Normandy, France.
 * SS Matt W. Ransom (🇺🇸 United States): World War II: The Liberty ship was sunk as a breakwater as part of Gooseberry 1, Utah Beach. She was later wrecked in a storm.
 * SS Nasusan Maru (🇯🇵 Japan): World War II: The ship was torpedoed and sunk in the East China Se by USS Tang (SS-306).
 * USS Rich (DE-695) : World War II: Operation Overlord: The Buckley-class destroyer escort struck a mine and sank in the English Channel off Normandy (49.51667°N, -1.16667°W) with the loss of 91 of her 213 crew.
 * SS Shioya Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and sunk in the Celebes Sea off Manado Dutch East Indies by USS Rasher (SS-269).
 * SS Tainan Maru (🇯🇵 Japan): World War II: The ship was torpedoed and sunk in the East China Sea by USS Tang (SS-306).
 * SS Tamahoko Maru (🇯🇵 Japan): World War II: The ship was torpedoed and sunk in the East China Sea by USS Tang (SS-306).
 * GS U-373 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay west of Brest, Finistère, France (48.16667°N, -5.51667°W) by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of four of her 51 crew.
 * GS U-441 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel (approximately 48.45°N, -5.78333°W) by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of all 51 crew.

9 June

 * HMS Durban (D99)  : World War II: The decommissioned Danae-class light cruiser  was sunk as a blockship as part of Gooseberry 5 breakwater. (44.33333°N, -0.26667°W)
 * SS Empire Flamingo (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as a blockship as part of Gooseberry 4, Juno Beach, Arromanches, Calvados, France. Bow section salvaged in 1948 and taken under tow for Newport Monmouthshire but sank en route.
 * SS Empire Moorhen (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as a blockship as part of Gooseberry 4. Raised in 1947 and scrapped.
 * SS Empire Waterhen (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as a blockship as part of Gooseberry 4. Raised in 1948 and scrapped.
 * USS LST-314 (LCT-314) : World War II: The LCT Mk 2-class Landing Ship, Tank was torpedoed and sunk in the Seine Bay 30 miles east of Cherbourg (49.71667°N, -0.86667°W) by Schnellboots GERMAN SCHNELLBOOT S172, GERMAN SCHNELLBOOT S174, GERMAN SCHNELLBOOT S175, and GERMAN SCHNELLBOOT S187, all.
 * USS LST-376 (LCT-376) : World War II: The LCT Mk 2-class Landing Ship, Tank was torpedoed and damaged in the Seine Bay 30 miles east of Cherbourg (49.71667°N, -0.86667°W) by Schnellboots GERMAN SCHNELLBOOT S172, GERMAN SCHNELLBOOT S174, GERMAN SCHNELLBOOT S175, and GERMAN SCHNELLBOOT S187, all . Scuttled by US Navy ships (49.71667°N, -0.88333°W)
 * JAPANESE DESTROYER Matsukaze : World War II: The Kamikaze-class destroyer was torpedoed and sunk in the Pacific Ocean 70 nmi north east of Chichijima, Ogasawara Islands (26.98333°N, 143.21667°W) by USS Swordfish (SS-193).
 * GERMAN TORPEDO BOAT TA-27 : World War II: The Ariete-class Torpedo Boat was bombed and sunk at Porto Ferraio, Italy.
 * SS Tanais (1906) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk by HMS Vivid (P77) north of Dia, Crete (35.58333°N, 25.18333°W).
 * JAPANESE DESTROYER Tanikaze : World War II: The Kagero-class destroyer torpedoed and sunk in the Sibutu Passage (5.7°N, 120.68333°W) by USS Harder (SS-257) with the loss of 114 of her 240 crew. Survivors were rescued by JAPANESE DESTROYER Urakaze.
 * GERMAN DESTROYER Z32 : World War II: The destroyer was hit by gunfire and beached off Île de Batz, Brittany, France (48.78333°N, -4.11667°W).
 * GERMAN DESTROYER ZH1 : World War II: The destroyer was torpedoed and sunk was in a surface battle off Île de Batz, France.

10 June

 * SS Charles Morgan (🇺🇸 United States): World War II: The Liberty ship was bombed and sunk in the English Channel off the coast of Normandy, France by Luftwaffe aircraft.
 * MS Hiyoshi Maru (1929) (🇯🇵 Japan): World War II: The cargo ship was sunk in the Strait of Malacca (3.08333°N, 99.93333°W) by HMS Tantalus (P318).
 * USS LCT-209 (LCT-209) : World War II: The LCT Mk 5-class Landing Craft, Tank was lost off Normandy.
 * SS Lynghaug (1919, Wallace) (🇬🇧 United Kingdom): World War II: Operation Overlord: The cargo ship was sunk as a breakwater as part of Gooseberry 3 off Gold Beach, Arromanches-les-Bains, Calvados, France.
 * HMS MTB 681 (MTB 681) : World War II: The Fairmile D-class Motor Torpedo Boat was sunk by German surface warships off the Netherlands.
 * JAPANESE SUBMARINE RO-111 : World War II: The KS Type submarine was depth charged, shelled and sunk in the Pacific Ocean (0.43333°N, 149.26667°W)  by USS Taylor (DD-468).
 * SS Toyama Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean off the Ryukyu Islands by USS Sturgeon (SS-187).
 * GS U-821 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay off Brest, Finistère, France (48.51667°N, -5.18333°W) by a Consolidated B-24 Liberator aircraft of 206 Squadron, Royal Air Force and four de Havilland Mosquito aircraft of 248 Squadron, Royal Air Force with the loss of 50 of her 51 crew.

11 June

 * SS Asanagi Maru : World War II: The tanker was torpedoed and damaged in the Philippine Sea off Jolo, the Philippines, by USS Redfin (SS-272) . She was beached at (6°N, 120.83333°W), declared a constructive total loss and abandoned.
 * HMS Halsted (K556) : World War II: The Captain class frigate was torpedoed and severely damaged by German E boats, or Torpedo Boats Jaguar and Mowe, off Normandy, France. Declared total constructive loss.
 * USS LCI(L)-219 (LCI(L)-219) : World War II: The LCI-1-class Landing Craft, Infantry sunk by German aircraft off Normandy.
 * USS LST-496 : World War II: The Landing Ship, Tank struck a mine off Normandy, France. Although assistance was given by USS Altus (PC-568), USS Amesbury (DE-66), USS ATA-125 and USS LCI-530 (all ), the ship capsized and sank.
 * HMS MGB 17 (MA/SB 17) : World War II: The BPB 70 foot class Motor Gun Boat was sunk by a mine off Normandy, France.
 * USS Partridge (AM-16) : World War II: The Ocean Tug,Old, a former Lapwing-class minesweeper, was torpedoed and sunk in the English Channel 11 nmi off Vierville-sur-Mer, Calvados (49.5°N, 0.83333°W) by a Kriegsmarine E-boat.
 * JAPANESE SUBMARINE RO-42 : World War II: The K6 type submarine was Hedgehogged and sunk in the Pacific Ocean east of Roi by (10.08333°N, 168.36667°W)  USS Bangust (DE-739)
 * HMS Sesame (W144) : World War II: The Assurance Class Rescue Tug was torpedoed and sunk by a German E boat off Normandy, France.
 * GS U-980 : World War II: The Type VIIC submarine was depth charged and sunk in the North Sea west of Bergen, Hordaland, Norway (63.11667°N, 0.43333°W) by a Consolidated PBY Catalina aircraft of 162 Squadron, Royal Canadian Air Force with the loss of all 52 crew.

12 June

 * JAPANESE TRANSPORT Batavia Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.53333°N, 143.28333°W) by U.S. Navy aircraft.
 * JAPANESE CARGO SHIP Bokuyo Maru : World War II: Convoy 4611: The Cargo ship was bombed and sunk north-west of Saipan by U.S. Navy aircraft.
 * JAPANESE CARGO SHIP Fukoku Maru : World War II: Convoy 4611: The Cargo ship was bombed and sunk north-west of Saipan by U.S. Navy aircraft.
 * JAPANESE TRANSPORT Hinko Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.46667°N, 144.31667°W) by U.S. Navy aircraft.
 * JAPANESE TRANSPORT Imizu Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.53333°N, 144.16667°W) by U.S. Navy aircraft.
 * JAPANESE TRANSPORT Kamishima Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.53333°N, 144.16667°W) by U.S. Navy aircraft.
 * JAPANESE AIRCRAFT TRANSPORT Keiyo Maru : World War II: Convoy 4611: The Aircraft Transport was bombed and damaged off Saipan by U.S. Navy aircraft. She was successfully beached on Saipan, but bombed and destroyed on the 13th. The crew was absorbed by the Saipan Garrison and were all killed in the Battle of Saipan, her C.O. being killed in the final Banzai charges.
 * JAPANESE NET LAYER Kokko Maru : World War II: Convoy 4611: The Aux. Netlayer was bombed and sunk north-west of Saipan (17.53333°N, 144.01667°W) by U.S. Navy aircraft.
 * JAPANESE CARGO SHIP Moji Maru : World War II: Convoy 4611: The Cargo ship was bombed and sunk north-west of Saipan by U.S. Navy aircraft.
 * JAPANESE TRANSPORT Nitcho Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.53333°N, 143.16667°W) by U.S. Navy aircraft.
 * JAPANESE TORPEDO BOAT Otori : World War II: Convoy 4611: The Otori-class Torpedo Boat was bombed and sunk 180 miles north-west of Saipan(17.53333°N, 144°W) by U.S. Navy aircraft.
 * JAPANESE TRANSPORT Reikai Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.5°N, 144°W) by U.S. Navy aircraft.
 * HMS Sickle (P224) : World War II: The S-class submarine struck a mine and sank in the Ionian Sea off Kythira, Greece.
 * JAPANESE TRANSPORT Tenryugawa Maru : World War II: Convoy 4611: The Transport was bombed and sunk north-west of Saipan (17.53333°N, 144.01667°W) by U.S. Navy aircraft.
 * JAPANESE CARGO SHIP Tsushima Maru (🇯🇵 Japan): World War II: Convoy 4611: The Cargo ship was bombed and sunk north-west of Saipan by U.S. Navy aircraft.
 * GS U-490 : World War II: The Type XIV submarine was depth charged and sunk in the Atlantic Ocean (42.78333°N, -40.13333°W) by USS Frost (DE-144), USS Huse (DE-145), USS Inch (DE-146), USS Snowden (DE-246) and aircraft based on USS Croatan (CVE-25) (all ). All 60 crew survived.

13 June

 * HMS Boadicea (H65) : World War II: Convoy EBC 8: The B-class destroyer was torpedoed and sunk in the English Channel off the Isle of Portland, Dorset (50.47°N, -2.49167°W) by Luftwaffe aircraft with the loss of 126 of her 138 crew.
 * JAPANESE SUBMARINE I-33 : World War II: The B1 type submarine sank in the Iyo Nada near Kure, Japan during diving trials when wood scaffolding from recent work jammed the starboard main induction valve. 102 crewmen killed, 2 survivors. Raised and scrapped 1953.
 * HMS LCT 967 (LCT-967) : World War II: The LCT Mk 4-class Landing Craft, Tank was  sunk by a mine.
 * HMS MMS 229 (J729) : World War II: The MMS 1-class Motor Minesweeper was  sunk by a mine off Normandy.
 * JAPANESE SUBMARINE RO-36 : World War II: The K6 type submarine was shelled and sunk 75 miles east of Saipan (15.35°N, 147°W)in the Pacific Ocean by USS Melvin (DD-680) . 77 crewmen killed.
 * SS Reiaas (1918) (🇳🇴 Norway): World War II: Convoy FWC 5: The cargo ship collided in the English Channel off Normandy, France with SS Folda (🇬🇧 United Kingdom) and sank with the loss of two of her 25 crew. Some of the survivors were rescued by SS Rowansfield (🇬🇧 United Kingdom).
 * SS Takashima Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean. Survivors rescued by JAPANESE DESTROYER Hatsuhara.
 * GS U-715 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north east of the Faroe Islands (62.91667°N, -2.98333°W) by a Consolidated PBY Canso aircraft of 162 Squadron, Royal Canadian Air Force with the loss of 36 of her 52 crew.

14 June

 * HMT Birdlip (T218) : World War II: The naval trawler was torpedoed and sunk in the Atlantic Ocean (approximately 5°N, -9°W) by GS U-547 with the loss of 36 of her 51 crew. Survivors were rescued by HMT Inkpen (T225) and HMT Turcoman (T218) (both ).
 * USS Golet (SS-361)   World War II: The Gato-class Submarine  was  sunk off northern Honshu (41.06667°N, 141.51667°W)in the Pacific Ocean by Guardship Miya Maru and Aux. Sub Chaser Bunzan Maru, both, and aircraft.
 * SS Koan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Celebes Sea (4.55°N, 122.38333°W) by USS Rasher (SS-269) . 1 Gunner and 13 crewmen killed.
 * GERMAN MINESWEEPER M-83 : World War II: The minesweeper was torpedoed and sunk off Auderville, France.
 * GERMAN MINESWEEPER M-343 : The minesweeper was shelled and sunk off Jersey, Channel Islands.
 * SS Saint Basile (🇫🇷 France): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (5.05°N, -9.23333°W) by GS U-547 with the loss of six of the 64 people on board. Survivors were rescued by HMT Inkpen (T225) and HMT Turcoman (T218) (both ).

15 June

 * HMS Blackwood (K313) : World War II: The Captain class frigate was torpedoed and damaged in the English Channel off Brittany, France (50.11667°N, -2.25°W) by GS U-764 with the loss of 58 of her 156 crew. Although taken in tow, she foundered the next day off Portland Bill, Dorset.
 * GERMAN TORPEDO BOAT Falke : World War II: The torpedo boat was bombed and sunk by aircraft at Le Havre, France (49.5°N, 0.11667°W).
 * GERMAN TORPEDO BOAT Jaguar : World War II: The torpedo boat was bombed and sunk by aircraft at Le Havre, France (49.5°N, 0.11667°W).
 * SS Kanseishi Maru : World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean 150 KM south-east of Tori Jima (29.5°N, 141.23333°W) by USS Swordfish (SS-193) . 2 killed.
 * GERMAN MINESWEEPER M-103 : World War II: The minesweeper was sunk by aircraft gunfire and air-dropped torpedoes off De Marne, the Netherlands.
 * GERMAN MINESWEEPER M-3802 : World War II: The minesweeper was bombed and sunk by Royal Air Force aircraft off Saint-Nazaire, France.
 * GERMAN MINESWEEPER M-402 : World War II: The minesweeper was bombed and sunk by aircraft at Bolougne, France.
 * GERMAN MINESWEEPER M-507 : World War II: The minesweeper was bombed and sunk by aircraft at Bolougne, France.
 * JAPANESE MINELAYER Ma-101 : World War II: The Auxiliary Netlayer/Minelayer, a Bar class boom defence vessel, was shelled and sunk in Tanapag Harbor, Saipan by USS Halsey Powell (DD-686) . Raised and repaired by Allied forces 1944-45. Ceded to the Republic of China as a War Reparation in 1947. Captured by the Red Chinese in 1949.
 * HMS Mourne (K261) : World War II: The River-class frigate was torpedoed and sunk in the English Channel (49.58333°N, -5.5°W) by GS U-767 with the loss of 110 crew.
 * GERMAN TORPEDO BOAT Möwe : World War II: The torpedo boat was bombed and sunk by aircraft at Le Havre, France (49.5°N, 0.11667°W).
 * GERMAN PATROL BOAT PA-1 : World War II: The Flower class corvette was bombed and sunk by aircraft at Le Havre, France.
 * GERMAN PATROL BOAT PA-2 : World War II: The Flower class corvette was bombed and sunk by aircraft at Le Havre, France.
 * GERMAN PATROL BOAT PA-3 : World War II: The Flower class corvette was bombed and sunk by aircraft at Le Havre, France.
 * JAPANESE SUBMARINE Ro-44 : World War II: The Ro-35-class submarine was shelled and sunk in the Pacific Ocean off the Marshall Islands (11.21667°N, 164.25°W) by USS Burden R. Hastings (DE-19).
 * JAPANESE SUBMARINE Ro-114 : World War II: The Ro-100-class submarine was depth charged and sunk in the Philippine Sea west of Tinian, Marshall Islands by USS Melvin (DD-680) and USS Wadleigh (DD-689) (both ).
 * JAPANESE DESTROYER Shiratsuyu : The Shiratsuyu-class destroyer collided in the Philippine Sea off Mindanao, Philippines (0.15°N, 126.85°W) with SS Seiyo Maru (🇯🇵 Japan) and sank with the loss of 104 of her 180 crew.
 * GERMAN TORPEDO BOAT TA-26 : World War II: The Ariete-class Torpedo Boat was torpedoed and sunk by USS PT-552 (PT-552), USS PT-558 (PT-558), and USS PT-559 (PT-559)  (all ).
 * GERMAN TORPEDO BOAT TA-30 : World War II: The Ariete-class Torpedo Boat was torpedoed and sunk by USS PT-552 (PT-552), USS PT-558 (PT-558), and USS PT-559 (PT-559)   (all ).
 * GS U-860 : World War II: The Type IXD2 submarine was sunk in the South Atlantic south of Saint Helena (-25.45°N, -5.5°W) in a depth charge and rocket attack by seven Grumman TBM Avenger and Grumman F4F Wildcat aircraft based on USS Solomons (CVE-67) with the loss of 42 of her 62 crew.
 * GS U-987 : World War II: The Type VIIC submarine was depth charged and sunk in the North Sea west of Narvik, Nordland, Norway (68.01667°N, 5.13333°W) by HMS Satyr (P214) with the loss of all 53 crew.
 * GERMAN PATROL BOAT V-1506 : World War II: The patrol boat was bombed and sunk by aircraft off Le Havre, France.

16 June

 * CHANT 69 (🇬🇧 United Kingdom): The Channel Tanker capsized in the English Channel off Normandy. She was later sunk by gunfire from a Royal Navy ship.
 * SS Columbine (1921) (🇿🇦 South Africa): World War II: The cargo ship was torpedoed and sunk in the South Atlantic off Cape Town (-32.73333°N, 17.36667°W) by GS U-198 with the loss of 23 of her 52 crew.
 * JAPANESE SUBMARINE I-6 : World War II: The I-6-class submarine was rammed and sunk in the Pacific Ocean north east of Hachijo Shima by Toyokawa Maru (🇯🇵 Japan) when she surfaced near a Japanese convoy, in a case of mistaken ID. Lost with all 104 hands.
 * HMS LCT 589 (LCT 589) : World War II: The LCT Mk 4-class Landing Craft, Tank was  sunk in the Mediterranean Sea to prevent capture.
 * HMS Southern Pride (K249) : World War II: The 582-grt Naval Whaler was wrecked near Freetown, Sierra Leone.
 * GS U-998 : World War II: The Type VIIC/41 submarine was depth charged and damaged at Bergen, Hordaland, Norway by a de Havilland Mosquito aircraft of 333 Squadron, Royal Air Force. She was consequently withdrawn from service and scrapped.

17 June

 * SS Dixie (1937) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Barents Sea off Kiberg, Finnmark by an Ilyushin Il-4 aircraft of the Soviet Air Force with the loss of one crew member.
 * SS Kinshu Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Hake (SS-256).
 * JAPANESE SUBMARINE RO-117 : World War II: The Ro-100-class submarine was bombed and sunk in the Pacific Ocean 350 miles south-east of Saipan (11.08333°N, 150.51667°W)  by a US Navy PB4Y-1 Liberator of Squadron VB-109. Lost with all 55 hands.

18 June
For the foundering of HMS Quail on this day, see the entry for 15 November 1943.
 * USS LCI(G)-468 (LCI(G)-468) : World War II: The LCI-351-class Landing Craft, Infantry was torpedoed by Japanese aircraft 250 miles east of Guam (31.46667°N, 148.3°W) . Scuttled by USS Stembel (DD-644).
 * USS PT-63 (PT-63) : World War II: The ELCO 77' -class PT Boat was burned in a refueling accident at Hamburg Bay, Emirau (-1.75°N, 150.01667°W).
 * USS PT-107 (PT-107) : World War II: The ELCO 80' -class PT Boat was burned in a refueling accident at Hamburg Bay, Emirau (-1.75°N, 150.16667°W).
 * GS U-767 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel south west of Guernsey, Channel Islands (49.05°N, -3.21667°W) by HMS Fame (H78), HMS Inconstant (H49) and HMS Havelock (H88) (all ) with the loss of 49 of her 50 crew.

19 June

 * USS ATR-15 (ATR-15) : World War II: The ATR-1-class Rescue Tug was lost by grounding off Normandie.
 * CHANT 7 (🇬🇧 United Kingdom): The Channel Tanker capsized and was driven ashore in Normandy.
 * SS Garoet (🇳🇱 Netherlands): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean (-12.5°N, 64°W) by GS U-181 with the loss of 88 of her 98 crew. Survivors were rescued by SS Nirvana (🇬🇧 United Kingdom or reached land in their lifeboat.
 * JAPANESE SUBMARINE I-184 : World War II: The I-176-class submarine was sunk in the Philippine Sea by aircraft based on USS Suwannee (CVE-27).
 * USS LST-523 (LST-523) : World War II: The Mk 2-class Landing Ship,Tank was sunk by a mine off Normandie (49.5°N, -1.16667°W).
 * SS Pestel' ( Soviet Union): World War II: The passenger ship was torpedoed and sunk in the Black Sea (41.05°N, 39.7°W) by GS U-20 (1936) with the loss of eighteen of her 66 crew. Survivors were rescued by Soviet Navy patrol boats.
 * JAPANESE AIRCRAFT CARRIER Shōkaku : World War II: Battle of the Philippine Sea: The Shōkaku-class aircraft carrier was torpedoed and sunk in the Philippine Sea by USS Cavalla (SS-244) with the loss of 1,272 of her 1,842 crew. Survivors were rescued by JAPANESE DESTROYER Hatsuzuki, JAPANESE DESTROYER Urakaze, JAPANESE DESTROYER Wakatsuki and JAPANESE CRUISER Yahagi (all ).
 * JAPANESE AIRCRAFT CARRIER Taihō : World War II: Battle of the Philippine Sea: The aircraft carrier was torpedoed and sunk in the Philippine Sea by USS Albacore (SS-218) with the loss of 1,650 of her 2,150 crew.

20 June

 * JAPANESE TANKER Genyo Maru : World War II: Battle of the Philippine Sea: The   was bombed and damaged by US Navy aircraft in the Philippine Sea, scuttled by JAPANESE DESTROYER Uzuki  (15.58333°N, 133.5°W).
 * JAPANESE AIRCRAFT CARRIER Hiyō : World War II: Battle of the Philippine Sea: The Hiyō-class aircraft carrier was torpedoed and sunk in the Philippine Sea (16.33333°N, 132.38333°W) by Grumman TBF Avenger aircraft from USS Belleau Wood (CVL-24) with the loss of 247 of her 1,224 crew.
 * USS LCT-208 (LCT-208) : World War II: The LCT Mk 5-class Landing Craft, Tank ran aground and sank off Algeria.
 * JAPANESE TANKER Seiyo Maru : World War II: Battle of the Philippine Sea: The Oiler  was bombed and damaged by US Navy aircraft in the Philippine Sea, scuttled by JAPANESE DESTROYER Yukikaze  . 3 crewmen killed.
 * GERMAN TORPEDO BOAT T-31 : World War II: The torpedo boat was torpedoed and sunk off the Koivisto Islands, Finland.

21 June

 * USCGC CG83415 (CG83415) : World War II: The 83 foot Patrol Boat was wrecked at Normandy in a storm.
 * USCGC CG83477 (CG83477) : World War II: The 83 foot Patrol Boat was wrecked at Normandy in a storm.
 * ITALIAN CRUISER Bolzano : World War II: The Trento-class cruiser was sunk at La Spezia, Liguria by Italian commando frogmen. Refloated post-war and scrapped in 1947.

22 June

 * JAPANESE SUBMARINE I-185 : World War II: The KD-7-class submarine was sunk in the Pacific Ocean (15.91667°N, 147.15°W) by USS Chandler (DD-206) and USS Newcomb (DD-586) (both ). Lost with all 95 hands.
 * SS Nagaragawa Maru (1944) ( Empire of Japan): World War II: The cargo ship was torpedoed and sunk off Kakegawa, Shizuoka, Japan (34.6°N, 137.93333°W) by a submarine.

23 June

 * JAPANESE AUXILIARY TRANSPORT Belgium Maru : World War II: The Daifuku Maru No. 1-class transport was torpedoed and severely damaged in the Sulu Sea off Mindoro in the Mindoro Strait (13.18333°N, 120.45°W) by USS Flier (SS-250)  and beached. Later refloated and towed to Manila. She was too badly damaged to be repaired and used as a stationary Anti-Aircraft Battery.
 * JAPANESE AUXILIARY TRANSPORT Shoun Maru : World War II: The  was torpedoed and sunk at Rota, Marianas (14.16667°N, 145.16667°W)  by a Grumman TBF Avenger from USS Yorktown (CV-10) . 6 crewmen killed.

24 June

 * SS Aso Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Philippine Sea off Leyte, Philippines by USS Redfin (SS-272).
 * DB-26 : World War II: The motorboat was shelled and sunk in the Black Sea (43.28333°N, 40.73333°W  by GS U-20 (1936).
 * MV Derrycunihy (🇬🇧 United Kingdom): World War II: The cargo ship (impressed military transport MTS T72) was sunk by a Luftwaffe acoustic mine off Sword Beach, Normandy, with great loss of life among the troops of 43rd (Wessex) Reconnaissance Regiment in the after part waiting to disembark. The fore part was beached and unloaded.
 * SS Empire Lough (🇬🇧 United Kingdom): World War II: The collier was torpedoed and damaged in the English Channel by Kriegsmarine schnellboots. She was beached at Folkestone, Kent but was a total loss.
 * SS Fort Norfolk (🇬🇧 United Kingdom): World War II: The Fort ship struck a mine and sank off Juno Beach, Calvados, France.
 * JAPANESE SUBMARINE I-52 : World War II: The Type C3 submarine was depth charged and sunk in the Atlantic Ocean (15.26667°N, -39.91667°W) by a Grumman TBF Avenger aircraft based on USS Bogue (CVE-9).
 * SS Kennichi Maru : World War II: The cargo ship was torpedoed and sunk in the East China Sea (32.4°N, 129.63333°W)   by USS Tang (SS-306) . 36 crewmen killed.
 * SS Kumanoyama Maru (🇯🇵 Japan): World War II: The cargo ship was shelled and sunk in the Pacific Ocean by USS Greenling (SS-213).
 * HMS Lord Austen (FY220) : World War II: The Naval Trawler was sunk by a mine off Normandy.
 * HMS MMS 8 (J508) : World War II: The MMS-1-class Motor Minesweeper  was sunk by a mine in the English Channel.
 * SS Nasusan Maru : World War II: The tanker was torpedoed and sunk in the East China Sea (32.4°N, 129.63333°W)   by USS Tang (SS-306) . 11 crewmen killed.
 * USS PT-193 (PT-193) : World War II: The ELCO 80'-class PT Boat ran aground and was burned to avoid capture off Noemfoor, New Guinea. (-0.91667°N, 134.86667°W).
 * SS San Pedro Maru : World War II: The tanker was torpedoed and sunk in the South China Sea off Cape Bolinao, Luzon (16.28333°N, 119.68333°W)  by USS Jack (SS-259) . 8 crewmen, 2 Gunners and 25 passengers killed.
 * HMS Swift (G46) : World War II: The S class destroyer was sunk by a mine off Sword Beach, Normandy.
 * SS Tainan Maru : World War II: The cargo ship was torpedoed and sunk in the East China Sea (32.4°N, 129.63333°W)   by USS Tang (SS-306) . 34 crewmen killed.
 * SS Tamahoko Maru : World War II: The cargo ship was torpedoed and sunk in the East China Sea (32.4°N, 129.63333°W)   by USS Tang (SS-306) . 35 crewmen, 560 Allied POWs, including 15 US, killed.
 * GS U-971 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel north of Brest, Finistère, France (49.01667°N, -5.58333°W) by a Consolidated B-24 Liberator aircraft of 311 Squadron, Royal Air Force and also by HMS Eskimo (F75) and HMCS Haida (G63)  with the loss of one of her 52 crew.
 * GS U-1225 : World War II: The Type IXC/40 submarine was depth charged and sunk in the North Sea west of Bergen, Hordaland, Norway (63°N, -0.83333°W) by a Consolidated Canso aircraft of 162 Squadron, Royal Canadian Air Force with the loss of all 56 crew.

25 June

 * HMS Goodson (K480) : World War II: The Captain-class frigate) was torpedoed and damaged in the English Channel (50°N, -2.81667°W) by GS U-984 . She was towed to Portland by HMS Bligh (K467) but was declared a total loss. Scrapped in January 1947.
 * GS U-269 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel south east of Torquay, Devon, United Kingdom (50.01667°N, -2.98333°W) by HMS Bickerton (K466) with the loss of thirteen of her 52 crew.

26 June

 * MS Florianopolis (1940) (🇩🇪 Germany): World War II: The cargo ship was bombed by aircraft and beached off Kirkenes, Norway. Scrapped in the United Kingdom after the war.
 * HMS Goodson (K480) : World War II: The Captain class frigate was torpedoed and severely damaged by the German submarine GS U-984 west of Portland Bill. She was declared a total constructive loss.
 * ITALIAN CRUISER Gorizia : World War II: The Zara class cruiser was crippled at La Spezia, Italy by manned torpedoes. Scrapped post-1946.
 * HMS MTB 734 (MTB734) : World War II: The Fairmile D -class Motor Torpedo Boat, was bombed by Allied aircraft and sunk by Allied warships off Normandy.
 * GS U-317 : World War II: The Type VIIC/41 submarine was depth charged and sunk in the Atlantic Ocean north east of the Shetland Islands, United Kingdom (62.05°N, 1.75°W) by a Consolidated B-24 Liberator aircraft of 86 Squadron, Royal Air Force with the loss of all 50 crew.
 * GS U-719 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north west of Ireland (55.55°N, -11.03333°W) by HMS Bulldog (H91) with the loss of all 52 crew.

27 June

 * Barzha No.75 ( Soviet Union): World War II: The barge was torpedoed and sunk in the Black Sea off Tuapse by GS U-19 (1936).
 * JAPANESE TANKER Medan Maru : World War II: The tanker was torpedoed and sunk in the East China Sea in the Bashi Channel by USS Seahorse (SS-304) . Her cargo of 8463 tons of AvGas exploded killing all 58 crewmen.
 * HMS Pink (K137) : World War II: The Flower-class corvette was torpedoed and damaged in the English Channel (49.8°N, -0.81667°W) by GS U-988 . She was towed to Portsmouth, Hampshire but was declared a total loss. Scrapped in 1947.

28 June

 * JAPANESE ESCORT CD-24 : World War II: The /Coast Defence Frigate was torpedoed and sunk off Iwo Jima (24.73333°N, 140.33333°W)  by  USS Archerfish (SS-311).
 * HMS MGB 326 (MGB326) : World War II: The Fairmile C class Motor Gun Boat was sunk by a mine off Normandy, France.
 * HMS Maid of Orleans : World War II: Convoy FXP 18: The Landing Ship, Infantry was torpedoed and sunk in the English Channel south east of St. Catherine's Point, Isle of Wight (50.1°N, -0.68333°W) by GS U-988 with the loss of five of the 98 people on board. Survivors were rescued by HMS Eglington (L87), HMS Hotham (K583) (both ) and ST Empire Roger (🇬🇧 United Kingdom).
 * SS Nerissa (1936) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk off Cape Romanov.
 * SS Ussuri Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and damaged in the Bashi Channel (6.83333°N, 121.5°W) by USS Pargo (SS-264) on 27 June 1944. Bombed and sunk by 14th Air Force B-24s on the 28th. 2 crewmen killed.
 * SS Vulkan (1927) (🇩🇪 Germany): World War II: The cargo ship was shelled and sunk off Petsamo, Finland.
 * SS Yamagiko Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and sunk in the Moro Gulf (6.83333°N, 121.5°W) by USS Pargo (SS-264) .  killing 3 crewmen.

29 June

 * SS Empire Portia (🇬🇧 United Kingdom): World War II: Convoy FTM 22: The cargo ship was either torpedoed and sunk in the English Channel off Selsey Bill, West Sussex (50.55°N, -0.58333°W) by GS U-988, or she struck a mine. She was taken in tow by HMS LST-416 and beached at Ryde, Isle of Wight, where she broke in two and was declared a total loss. Consequently scrapped.
 * SS H. G. Blasdel (🇺🇸 United States): World War II: Convoy ECM 17: The Liberty ship was torpedoed and damaged in the English Channel 30 nmi south of St. Catherine's Point, Isle of Wight (50.11667°N, -0.78333°W) by GS U-984 with the loss of 76 of the 508 people on board. Survivors were rescued by buoy tender, a corvette and HMS LST-326 (all ). H. G. Blasdel was taken in tow and beached at Southampton, Hampshire. She broke in two and was declared a total loss. The wreck was scrapped in 1947.
 * SS James A. Farrell (🇺🇸 United States): World War II: Convoy ECM 17: The Liberty ship was torpedoed and damaged in the English Channel 30 nmi south of St. Catherine's Point (50.11667°N, -0.78333°W) by GS U-984 with the loss of four of the 494 people on board. Survivors were rescued by HMS LST-50 . James A. Farrell was beached at Netley, Hampshire and declared a total loss. She was scrapped in situ.
 * SS John A. Treutlen (🇺🇸 United States): World War II: The Liberty ship, on her maiden voyage, was torpedoed and damaged in the English Channel 30 nmi south of St. Catherine's Point (50.11667°N, -0.78333°W) by GS U-984 . Sixty-one of her 74 crew were rescued by HMCS Buctouche (K179) and USS LST-336 . John A. Treutlen was beached at Southampton, where she was declared a total loss.
 * JAPANESE TRANSPORT Katori Maru : World War II: The Transport was torpedoed and sunk 11 miles north of Caminguin Island, Mindanao (19°N, 121.7°W) by  USS Growler (SS-215) . 44 crewmen killed.
 * Toyama Maru (🇯🇵 Japan): The troopship was torpedoed and sunk off Tokunoshima, Kagoshima by USS Sturgeon (SS-187) with the loss of about 5,400 lives. There were about 600 survivors.
 * JAPANESE MINELAYER Tsugaru : World War II: The minelayer was torpedoed and sunk in Cenderawasih Bay off Biak, Netherlands East Indies (2.31667°N, 127.95°W) by USS Darter (SS-227) with the loss of most of her crew.
 * GS U-988 : World War II: The Type VIIC submarine was depth charged and sunk in the English Channel west of Guernsey, Channel Islands (49.61667°N, -3.68333°W) by a Consolidated B-24 Liberator aircraft of 244 Squadron, Royal Air Force and also by HMS Cooke (K471), HMS Domett (K473), HMS Duckworth (K351) and HMS Essington (K353) (all ) with the loss of all 50 crew.
 * USS Valor (AMc-108) : The Accentor-class minesweeper was in collision with USS Richard W. Suesens (DE-342) in Buzzards Bay off Mishaum Point, Massachusetts (41.46667°N, -70.95°W) and sank with the loss of seven of her fourteen crew.

30 June

 * SS Empire Portia (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and was damaged in the English Channel off Selsey Bill, West Sussex. She was taken in tow by USS LST 416 . She was beached north of Ryde Pier, Isle of Wight the next day but her back broke on 4 July and she was declared a total loss. Stern section salvaged in September 1944, bow section in April 1945 and scrapped.
 * GERMAN TORPEDO BOAT Kondor : World War II: The torpedo boat was bombed and wrecked in dry dock at Le Havre, France.
 * SS Matsukawa Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and sunk in the South China Sea (14.25°N, 119.66667°W) by USS Jack (SS-259) . 2 crewmen, 5 Gunners, and 15 soldiers killed.
 * SS Nikkin Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the East China Sea by USS Tang (SS-306).
 * SS Tsurushima Maru (🇯🇵 Japan): World War II: The tanker was torpedoed and sunk in the South China Sea (14.25°N, 119.66667°W) by USS Jack (SS-259) . 44 crewmen, 18 Gunners and 15 passengers killed.
 * GS U-478 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north east of the Faroe Islands (63.45°N, -0.83333°W) by a Consolidated PBY Canso aircraft of 162 Squadron, Royal Canadian Air Force and a Consolidated B-24 Liberator aircraft of 86 Squadron, Royal Air Force with the loss of all 52 crew.

Unknown date
For the scuttling of the German ship Sonderberg in connection with the Normandy Landings during June 1944, see the entry for 15 September 1942.
 * MV Amythyste ( Nazi Germany): World War II: The cargo ship was scuttled at Le Havre, Seine-Maritime, France. She was later raised, repaired and returned to service.
 * SS Empire Tamar (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as part of Gooseberry 5, Sword Beach, Ouistreham, Calvados, France.
 * SS Empire Tana (🇬🇧 United Kingdom): World War II: The cargo ship was sunk a part of Gooseberry 5.
 * USS LCT 572,LCT 713, and LCT 714 all sunk by mines off Normandy. USS LCT 147 ran aground and sank off Normandy. USS LCT 200, 244, and 413 lost from various causes off Normandy.
 * USS LCT 273, 301, 307, 402, 419 and 498 lost off Normandy. HMS LCI(L) 105 and 132 lost off Normandy. HMS LCT 524, 715, 750, 809, 886, and 947 lost off Normandy.
 * GS U-740 : World War II: The German Type VII submarine was lost on patrol in the English Channel on or after 6 June with the loss of all 51 crew.
 * GS U-1191 : World War II: The Type VIIC submarine was lost on patrol in the English Channel on or after 12 June with the loss of all 50 crew.
 * Virgilio (🇩🇪 Germany): The troopship was scuttled.