List of shipwrecks in July 1943

The list of shipwrecks in July 1943 includes ships sunk, foundered, grounded, or otherwise lost during July 1943.

1 July

 * SS Empire Ibex (🇬🇧 United Kingdom): The cargo ship collided in the Atlantic Ocean (53.5°N, -36.41667°W) with MV Empire MacAlpine (🇬🇧 United Kingdom) and was severely damaged. She was abandoned the next day by her crew, who were rescued by SS Perth (1915) (🇬🇧 United Kingdom. Empire Ibex sank on 3 July at 53.6°N, -36.26667°W.
 * SS Isuzu Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Philippine Sea by USS Trout (SS-202).
 * SS Tutoya (🇧🇷 Brazil): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 6 nmi off Iguape by GS U-513 with the loss of seven of her 37 crew.

2 July

 * SS Bloody Marsh (🇺🇸 United States): World War II: The tanker was on her maiden voyage. She was torpedoed and sunk in the Atlantic Ocean (31.55°N, -78.95°W) by GS U-66 (1940)) with the loss of three of her 77 crew. Survivors were rescued by USS SC-1048.
 * SS Empire Kohinoor (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and damaged in the Atlantic Ocean (6.33333°N, -16.5°W) by GS U-618 . The same submarine torpedoed her again the next day and sunk her with the loss of six of her 87 crew. Survivors were rescued by MV Gascony (🇬🇧 United Kingdom) and HMS Wolverine (D78) or reached land in their lifeboat.
 * SS Hoihow (🇬🇧 United Kingdom): World War II: The passenger ship was torpedoed and sunk in the Indian Ocean 103 nmi north west of Mauritius (-19.5°N, 55.5°W) by GS U-181 with the loss of 145 of the 149 people on board. Survivors were rescued by SS Mormacswan (🇺🇸 United States).
 * USS PT-153 (PT-153) : World War II: The ELCO 80' -class PT Boat ran aground and was abandoned off Munda Point, New Georgia, The Solomons.
 * USS PT-158 (PT-158) : World War II: The ELCO 80' -class PT Boat ran aground and was abandoned off Munda Point, New Georgia, The Solomons.
 * SS Yoneyama Maru : World War II: The Troop Transport was torpedoed and sunk in the Celebes Sea (1.5°N, 119.5°W) north east of Cape Talok, Borneo by USS Thresher (SS-200) . 11 Gunners and an unknown number of crewmen killed.

3 July

 * SS Anzan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Yellow Sea by USS Scorpion (SS-278).
 * SS Elihu B. Washburne (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the Atlantic Ocean off Brazil (-24.08333°N, -45.38333°W) by GS U-513 . All 70 crew survived.
 * SS Kherzon ( Soviet Union): The Liberty ship ran aground on the east coast of Kamchatka and broke in two on her delivery voyage to the Soviet Union. Both halves were refloated and later scrapped.
 * SS Kokuryu Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Yellow Sea by USS Scorpion (SS-278).
 * HMS LST 429 (LST429) : World War II: The MK 2-class Landing Ship, Tank burned and sank north of Zuwarah, Libya (33.08333°N, 11.86667°W).
 * SS Samuel Heintzelman (🇺🇸 United States): World War II: The Liberty ship was shelled and sunk in the Indian Ocean (-28.5°N, 105°W) by an Imperial Japanese Navy ship.
 * GS U-126 (1940) : World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean north west of Cape Ortegal, Spain (46.03333°N, -11.38333°W) by a Wellington aircraft of 172 Squadron, Royal Air Force with the loss of all 55 crew.
 * GS U-628 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north west of Cape Ortegal, Spain (44.18333°N, -8.75°W) by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of all 49 crew.

4 July

 * SS Breiviken (🇳🇴 Norway): World War II: Convoy DN 50: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Indian Ocean off Portuguese East Africa (-21.83333°N, 37.83333°W) by GS U-178 with the loss of three of her 36 crew.
 * Changri Lá (🇧🇷 Brazil): World War II: The sailing ship was shelled and sunk in the South Atlantic off Arrail do Cabo by GS U-199 with the loss of all ten crew.
 * SS City of Venice (🇬🇧 United Kingdom): World War II: Convoy KMS 18B: The troopship was torpedoed and sunk in the Mediterranean Sea 10 nmi north of Cape Tenez, Algeria (36.73333°N, 1.51667°W) by GS U-375 (}) with the loss of 21 of the 482 people on board. Survivors were rescued by HMS Honeysuckle (K27), HMS Restive (W39), HMS Rhododendron (K78) and HMS Teviot (K222) (all ).
 * SS Koki Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Philippine Sea off the Ryuku Islands by USS Snook (SS-279).
 * SS Liverpool Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Philippine Sea off the Ryuku Islands by USS Snook (SS-279).
 * SS Michael Livanos (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Mozambique Channel (-22.86667°N, 36.78333°W) by GS U-178 with the loss of two of her 41 crew.
 * SS Nikkyo Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Jack (SS-259).
 * SS Sabbia (1926) ( undefined): World War II: The passenger/cargo ship was torpedoed and sunk by a submarine south of Capo Linaro, Italy.
 * MV St. Essylt (🇬🇧 United Kingdom): World War II: Convoy KMS 18B: The cargo ship was torpedoed and sunk in the Mediterranean Sea 10 nmi north of Cape Tenez (36.73333°N, 1.51667°W) by GS U-375 with the loss of two of the 399 people on board. Survivors were rescued by HMS Honeysuckle (K27), HMS Restive (W39) and HMS Rhododendron (K78) (all ).

5 July

 * MV Devis (🇬🇧 United Kingdom): World War II: Convoy KMS 18B: The Assault Command Ship was torpedoed and sunk in the Mediterranean Sea north east of Cap Bengut, Algeria (37.01667°N, 4.16667°W) by GS U-593 with the loss of 52 of the 343 people on board. Survivors were rescued by HMS Cleveland (L46).
 * SOVIET SUBMARINE M-106 : World War II: The M-class submarine was depth charged by auxiliary Sub Chasers UJ-1206, 1212, 1214, and 1217(all ). Rammed and sunk by UJ-1217 after surfacing.
 * SS Maltran (🇺🇸 United States): World War II: Convoy GTMO 134: The cargo ship was torpedoed and sunk in the Caribbean Sea (18.18333°N, -74.95°W) by GS U-759 . All 47 crew were rescued by USS SC-1279.
 * USS Strong (DD-467) : World War II: The Fletcher-class destroyer was torpedoed and sunk in the Pacific Ocean off New Georgia, Solomon Islands (-8.08333°N, 157.25°W by JAPANESE DESTROYER Niizuki with the loss of 46 of her 329 crew. Survivors were rescued by USS Chevalier (DD-451).
 * GS U-535 : World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean north east of Cape Finisterre, Spain (43.63333°N, -9.21667°W) by Consolidated B-24 Liberator aircraft of 53 Squadron, Royal Air Force with the loss of all 55 crew.

6 July
For the loss of USS LST-333 on this day, see the entry for 22 June 1943.
 * USS Helena (CL-50) : World War II: Battle of Kula Gulf: The St. Louis-class cruiser was torpedoed and sunk in the Pacific Ocean off Kolombangara, Solomon Islands (-7.76667°N, 157.18333°W) by Imperial Japanese Navy ships with the loss of 168 of her 888 crew.
 * SS Hydraios (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean (-24.73333°N, 35.2°W) by GS U-198 . All 40 crew survived.
 * SS Jasper Park (🇨🇦 Canada): World War II: The Park ship was torpedoed and sunk in the Indian Ocean (-32.86667°N, 42.25°W) by GS U-177 with the loss of four of her 55 crew. Survivors were rescued by HMAS Quiberon (G81) and HMAS Quickmatch (G92) (both ).
 * JAPANESE DESTROYER Nagatsuki : World War II: Battle of Kula Gulf: The Mutsuki-class destroyer was shelled and damaged in the Pacific Ocean off Kolombangara by United States Navy ships. She was beached near Bambari Harbor (-7.95°N, 157.2°W) but was bombed and sunk the next day by American aircraft.
 * JAPANESE DESTROYER Niizuki : World War II: Battle of Kula Gulf: The Akizuki-class destroyer was shelled and sunk in the Pacific Ocean off Kolombangara (-7.95°N, 157.2°W) by United States Navy ships.
 * SS Shahjehan (🇬🇧 United Kingdom): World War II: Convoy MWS 36: The cargo ship was torpedoed and damaged in the Mediterranean Sea north west of Benghazi, Libya (33.01667°N, 21.53333°W) by GS U-453 with the loss of one of the 328 people on board. She was taken in tow but sank the next day at 32.91667°N, 21.16667°W). Survivors were rescued by HMS Aphis (T57) and HMS St. Monance (W63) (both ).

7 July

 * SS Banshu Maru No.33 (🇯🇵 Japan): World War II: The coaster was torpedoed and sunk in the Sea of Japan by USS Permit (SS-178).
 * SS James Robertson (🇺🇸 United States): World War II: Convoy BT 18: The Liberty ship was torpedoed and sunk in the Atlantic Ocean off Brazil (-4.08333°N, -35.63333°W) by GS U-185 with the loss of one of her 69 crew. Survivors were rescued by BRAZILIAN SUBMARINE CHASER Jaguarão  and USS PC-575  or reached land in their lifeboat.
 * SS Leana (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean 40 nmi east of Zavora Point, Portuguese East Africa (-25.1°N, 35.55°W) by GS U-198 with the loss of two of her 66 crew. Her captain was taken on board U-198 as a prisoner of war. The rest of the survivors reached land in their lifeboats.
 * MV Poelau Roebiah (🇳🇱 Netherlands): World War II: Convoy TAG 70: The cargo liner was torpedoed and sunk in the Caribbean Sea (17.93333°N, -75.95°W) by GS U-759 with the loss of two of the 123 people on board. Survivors were rescued by USS PC-1253.
 * SS Thomas Sinnickson (🇺🇸 United States): World War II: Convoy BT 18: The Liberty ship was torpedoed and damaged in the Atlantic Ocean off Fortaleza, Brazil (-3.85°N, -36.36667°W) by GS U-185 with the loss of one of her 70 crew. Survivors were rescued by USS Surprise (PG-63), which scuttled the ship.
 * GS U-951 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north west of Cape St. Vincent, Portugal (37.66667°N, -15.5°W) by a Consolidated B-24 Liberator aircraft of the United States Navy with the loss of all 46 crew.
 * SS Wilhelmsburg (1914) (🇩🇪 Germany): World War II: The tanker was torpedoed and sunk in the Aegean Sea (39.91667°N, 25.83333°W) by HMS Rorqual (N74).
 * SS William Boyce Thompson (🇺🇸 United States): World War II: Convoy BT 18: The tanker was torpedoed and sunk in the Atlantic Ocean 175 nmi off Fortaleza by GS U-185 with the loss of four of her 57 crew. Survivors were rescued by BRAZILIAN SUBMARINE CHASER Jaguarão  and USS Surprise (PG-63).

8 July

 * B. P. Newton (🇳🇴 Norway): World War II: Convoy TJ 1: The tanker was torpedoed and sunk in the Atlantic Ocean (5.83333°N, -50.33333°W) by GS U-510 with the loss of 23 of her 47 crew. Survivors were rescued by USS PC-495.
 * SS Eldena (🇺🇸 United States): World War II: Convoy TJ 1: The cargo ship was torpedoed and sunk in the Atlantic Ocean (5.83333°N, -50.33333°W) by GS U-510 . All 66 crew were rescued by USS PC-592.
 * HMS LCT 547 (LCT547) : World War II: The Mk 4 Landing Craft, Tank foundered off Malta.
 * SS Showa Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Sea of Japan by USS Permit (SS-178).
 * GERMAN MINESWEEPER Sperrbrecher 165 : World War II: The Sperrbrecher struck a mine and sank off Gothenburg, Sweden.
 * GS U-232 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (40.61667°N, -13.68333°W) by a Consolidated B-24 Liberator of the United States Army Air Forces.
 * GS U-514 : World War II: The Type IXC submarine was depth charged and sunk by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of all 54 crew.

9 July

 * SS De la Salle (🇬🇧 United Kingdom): World War II: Convoy ST 71: The cargo ship was torpedoed and sunk in the Gulf of Benin 60 nmi south west of Lagos, Nigeria (5.83333°N, 2.36667°W) by GS U-508 with the loss of ten of the249 people on board. Survivors were rescued by FRENCH CORVETTE Commandant Detroyat.
 * SS Manchester Citizen (🇬🇧 United Kingdom): World War II: Convoy ST 71: The cargo ship was torpedoed and sunk in the Gulf of Benin 60 nmi south west of Lagos (5.83333°N, 2.36667°W) by GS U-508 with the loss of 28 of her 104 crew. Survivors were rescued by FRENCH CORVETTE Commandant Detroyant.
 * SS Samuel Heintzelman (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the Indian Ocean (approximately -9°N, 81°W) by GS U-511 with the loss of all 75 people on board.
 * GS U-435 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean west of Figueira, Portugal (39.8°N, -14.36667°W) by a Vickers Wellington aircraft of 179 Squadron, Royal Air Force with the loss of all 48 crew.
 * GS U-590 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean of the mouth of the Amazon River (3.36667°N, -48.63333°W) by a Consolidated PBY Catalina aircraft of the United States Navy with the loss of all 45 crew.

10 July

 * SS Alice F. Palmer (🇺🇸 United States): World War II: The Liberty ship was torpedoed, shelled and sunk in the Indian Ocean (-26.5°N, 44.33333°W) by GS U-177 . All 68 crew were rescued by a Consolidated PBY Catalina aircraft of the Royal Air Force or reached land in their lifeboats.
 * HMS LCT 154 (LCT154) : World War II: The Mk 1 Landing Craft, Tank foundered off Bizerte, Algeria.
 * HMS LCT 311 (LCT311) : World War II: The Mk 1 Landing Craft, Tank foundered off Bizerte, Algeria while under tow.
 * USS LST-313 (LST-313) : World War II: The Mk 1 Landing Ship, Tank was bombed, set on fire and sunk in the Mediterranean Sea (37.01667°N, 14.25°W) off Gela Sicily, Italy.
 * GERMAN MINESWEEPER M-153 : World War II: The minesweeper was shelled and sunk off the coast of Biscay, Spain.
 * USS Maddox (DD-622) : World War II: The Gleaves-class destroyer was bombed and sunk in the Mediterranean Sea 16 nmi off Gela Sicily, Italy.
 * MV Scandinavia (1937) (🇸🇪 Sweden): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 200 nmi north of Cayenne, French Guiana (8.35°N, -48.5°W by GS U-510 . All 25 crew survived.
 * USS Sentinel (AM-113) : World War II: The Auk-class minesweeper was bombed and sunk in the Mediterranean Sea off Licata, Sicily. Survivors were rescued by USS LCI-33, USS PC-550 and USS SC-530 (all )

11 July

 * Flutto : World War II: The Flutto-class Submarine was sunk in the Straits of Messina (37.56667°N, 15.71667°W) by MTB 640, 651, and 670 (all).
 * USS LST-158 (LST-158) : World War II: The Mk 1 Landing Ship, Tank was bombed, abandoned and sank in the Mediterranean Sea (37.08333°N, 13.91667°W) off Licata Sicily, Italy.
 * SS Mary Livanos (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Mozambique Channel (-15.66667°N, 40.75°W) by GS U-178 with the loss of eight of her 36 crew.
 * SS Robert Rowan (🇺🇸 United States): World War II: The Liberty ship was bombed, shelled and sunk in the Mediterranean Sea off Gela, Sicily, Italy (36.78333°N, 14.5°W).

12 July

 * SS African Star (1942) (🇺🇸 United States): World War II: The Type C2 cargo ship was torpedoed and sunk in the South Atlantic (-25.76667°N, -40.75°W) by GS U-172 with the loss of one of her 87 crew. Survivors were rescued by BRAZILIAN DESTROYER Maranhao (.
 * SS Ocean Peace (🇬🇧 United Kingdom): World War II: The Ocean ship was bombed and sunk in the Mediterranean Sea off Avola, Sicily, Italy (36.91667°N, 15.21667°W) by enemy aircraft.
 * GS U-409 : World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea north of Algiers, Algeria (37.2°N, 0.66667°W) by HMS Inconstant (H49) with the loss of eleven of her 48 crew.
 * GS U-506 : World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean west of Vigo, Galicia, Spain (42.5°N, -16.5°W) by a Consolidated B-24 Liberator aircraft of the United States Army Air Forces with the loss of 48 of her 54 crew.
 * GS U-561 : World War II: The Type VIIC submarine was torpedoed and sunk in the Straits of Messina by MTB 81 with the loss of 42 of her 47 crew.

13 July

 * Acciaio : World War II: The Acciaio-class submarine was sunk off Calabria (38.5°N, 15.81667°W) by Unruly . Lost with all 46 hands.
 * USS Gwin (DD-433) : World War II: Battle of Kolombangara: The Gleaves-class destroyer was scuttled in the Pacific Ocean off the Solomon Islands following battle damage.
 * Jintsu : World War II: Battle of Kolombangara: The Sendai-class cruiser was sunk in the Pacific Ocean off the Solomon Islands (-7.63333°N, 157.1°W).
 * Nereide : World War II: The Sirena class submarine was sunk south east of the Straits of Messina (37.41667°N, 16.11667°W) by Echo and Ilex.
 * SS Ste. Christophe (🇩🇪 Germany): World War II: The cargo ship was bombed and sunk at Messina, Sicily by Allied aircraft.
 * SS Timothy Pickering (🇺🇸 United States): World War II: The Liberty ship was bombed and damaged in the Mediterranean Sea off Avola, Sicily, Italy (37°N, 15.35°W) by Luftwaffe aircraft. She was then scuttled by Allied naval vessels.
 * GS U-487 : World War II: The Type XIV submarine was sunk in the Atlantic Ocean (27.25°N, -34.3°W) by Grumman TBF Avenger and Grumman F4F Wildcat aircraft based on USS Core (CVE-13) with the loss of 31 of her 68 crew. Survivors were rescued by USS Barker (DD-213).
 * GS U-607 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north west of Cape Ortegal, Spain (45.03333°N, -9.23333°W) by a Short Sunderland aircraft of 228 Squadron, Royal Air Force with the loss of 45 of her 52 crew. Survivors were rescued by HMS Wren (U28).

14 July

 *  Harvard (🇬🇧 United Kingdom): World War II: The auxiliary schooner was shelled and sunk in the Atlantic Ocean east of Trinidad (10.08333°N, -60.33333°W) by GS U-572 . All eight crew were rescued by USAT State of Virginia.
 * JAPANESE SUBMARINE I-179 : World War II: The Kaidai VII (I-176 class) submarine sank in the Inland Sea off the Akizaki Light in a diving drill when a hatch was left open. 79 killed. Raised and scrapped between April 1956-March 1957.
 * USS LCT-19 (LCT-19) : World War II: The Mk 5 Landing Craft, Tank was bombed and sunk by German aircraft off Salerno.
 * SS Robert Bacon (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the Indian Ocean off Portuguese East Africa (-15.03333°N, 14.26667°W) by GS U-178 with the loss of five of her 71 crew. Survivors were rescued by SS English Prince and SS Steaua Romana (both 🇬🇧 United Kingdom) or reached land in their lifeboat.
 * GS U-160 (1941) : World War II: The Type IXC submarine was sunk in the Atlantic Ocean by Grumman TBM Avenger and Grumman F4F Wildcat aircraft based on USS Santee (CVE-29) with the loss of all 57 crew.

15 July

 * SS Aquitania (1924) ( undefined): World War II: The cargo ship was torpedoed and sunk by aircraft off Barcelona, Spain.
 * SS Empire Lake (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean 240 nmi east of Madagascar (-21.45°N, 51.78333°W) by GS U-181 with the loss of 31 of her 38 crew.
 *  Gilbert B. Walters (🇬🇧 United Kingdom): World War II: The schooner was shelled and sunk in the Atlantic Ocean south east of Trinidad (9.66667°N, -59.83333°W) by GS U-572 . All eleven crew survived.
 * SS Harmonic (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 600 nmi east of Rio de Janeiro, Brazil (-23°N, -33°W) by GS U-172 with the loss of one of her 47 crew. Survivors were rescued by SS Imhambane (🇵🇹 Portugal).
 * HMS LCT 2263 (LCT2263) : World War II: The Mk 5 Landing Craft, Tank was lost on this date. N.F.I.
 * Remo : World War II: The R-class submarine was sunk in the Straits of Messina (39.31667°N, 17.5°W) by HMS United (P44).
 * GS U-135 (1941) : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (28.33333°N, -13.28333°W) by HMS Balsam (K72), HMS Mignonette (K38), HMS Rochester (L50) (all ) and an American Consolidated PBY Catalina aircraft with the loss of five of her 46 crew.
 * GS U-509 : World War II: The Type IXC submarine was torpedoed and sunk in the Atlantic Ocean north west of Madeira, Portugal (34.03333°N, -26.01667°W) by Grumman TBF Avenger aircraft based on USS Santee (CVE-29) with the loss of all 54 crew.
 * GS U-759 : World War II: The Type VIIC submarine was depth charged and sunk in the Caribbean Sea (15.96667°N, -73.73333°W) by a Martin PBM Mariner aircraft of the United States Navy with the loss of all 47 crew.

16 July

 * SS Bjørkhaug (1919) (🇳🇴 Norway): World War II: The cargo ship was destroyed by the explosion of her cargo of land mines at Algiers, Algeria with the loss of nine of her 30 crew. SS Fort Confidence (🇬🇧 United Kingdom) was set on fire. Around 1,000 people were killed in the port.
 * SS Fort Confidence (🇬🇧 United Kingdom): The Fort ship caught fire at Algiers following the explosion of SS Bjørkhaug (1919) (🇳🇴 Norway). She was taken under tow by the tug ST Hudson (🇳🇱 Netherlands) and was beached. She was declared a total loss.
 * SS Fort Franklin 🇬🇧 United Kingdom): World War II: The Fort ship was torpedoed and sunk in the Indian Ocean south east of Réunion (-22.6°N, 51.36667°W) by GS U-181 with the loss of two of her 55 crew.
 * SS Richard Caswell (🇺🇸 United States): World War II: The Liberty ship was torpedoed and sunk in the South Atlantic 150 nmi off Floranapolis, Brazil (-28.16667°N, -46.5°W) by GS U-513 with the loss of nine of her 69 crew. Survivors were rescued by USS Barnegat (AP-10), SS Mexico (1912) (🇦🇷 Argentina) or reached land in their lifeboats.
 * GS U-67 (1940) : World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean (30.08333°N, -44.28333°W) by aircraft based on USS Core (CVE-13)  with the loss of 48 of her 51 crew.
 * SS Urado Maru (🇯🇵 Japan) World War II: The cargo ship was sunk in a collision with SS Seizan Maru(🇯🇵 Japan) off Hojo. Survivors rescued by SS Seizan Maru (🇯🇵 Japan).

17 July

 * SS City of Canton (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean north east of Beira, Portuguese East Africa (-13.86667°N, 41.16667°W) by GS U-178 with the loss of eight of her 103 crew. One survivor was taken on board U-178 as a prisoner of war, the rest were rescued by SS Lubao (🇵🇹 Portugal) and FRENCH CRUISER Suffren.
 * JAPANESE DESTROYER Hatsuyuki : World War II: The Fubuki Class destroyer was bombed by US aircraft at Kahili, Shortland Islands (-6.83333°N, 155.78333°W) detonating the aft magazine and sinking her in shallow water. 82 crewmen and 38 soldiers were killed.
 * GERMAN MINESWEEPER M-346 : World War II: The minesweeper was torpedoed and sunk by SOVIET SUBMARINE SHCH-403 in the Tanafjord, Norway.
 * SS Ransæter (🇳🇴 Norway): World War II: The coaster struck a mine and sank off Sørfolla, Nordland with the loss of four of the twelve people on board.

18 July

 * MV Incomati (🇬🇧 United Kingdom): World War II: The passenger ship was torpedoed and sunk in the Atlantic Ocean 200 nmi south of Lagos, Nigeria (3.15°N, 4.25°W) by GS U-508 with the loss of one of the 223 people on board. Survivors were rescued by HMS Boadicea (Hh65) and HMS Bridgewater (L01) (both ).
 * Romolo : World War II: The R-class Submarine was bombed and sunk in the Ionian Sea east of Augusta, Sicily (37.33333°N, 16.3°W) by aircraft of RAF Squadron 221.

19 July

 * SS Mikage Maru No.20 (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean off the Marshall Islands (18.75°N, 166.06667°W) by USS Porpoise (SS-172) . 3 crewmen killed.
 * GS U-513 : World War II: The Type IXC submarine was depth charged and sunk in the South Atlantic south east of São Francisco do Sol, Brazil (-27.28333°N, -47.53333°W) by Martin PBM Mariner aircraft of the United States Navy with the loss of 46 of her 53 crew.

20 July

 * SS Fort Pelly (🇬🇧 United Kingdom): World War II: The Fort ship was bombed and sunk at Augusta, Sicily, Italy by enemy aircraft.
 * JAPANESE DESTROYER Kiyonami The Yugumo-class destroyer was bombed and sunk in the Pacific Ocean north north west of Kolombangara (-7.21667°N, 156.75°W) by US Army B-25s. Lost with all hands, including survivors of JAPANESE DESTROYER Yugure.
 * USS PT-166 (PT-166) : World War II: The ELCO 80' -class PT Boat was sunk by US Army B-25s in the Ferguson Passage, off Vonavona Island, south of Kolombangara, Solomon Islands (-8.25°N, 156.88333°W).
 * GS U-558 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay (45.16667°N, -9.7°W) by two Consolidated B-24 Liberator aircraft of the 19th Bombardment Squadron, United States Army Air Forces and a Handley Page Halifax aircraft of 58 Squadron, Royal Air Force with the loss of 45 of her 50 crew. The survivors were rescued by HMCS Athabaskan (G07).
 * GERMAN PATROL BOAT V-6114 : World War II: The patrol boat was torpedoed and sunk by a submarine off Gamvik, Norway.
 * GERMAN PATROL BOAT V-805 : World War II: The patrol boat struck a mine and sank at 53.43333°N, 5.23333°W.
 * JAPANESE DESTROYER Yugure : World War II: The Hatsuharu-class destroyer was bombed and sunk in the Pacific Ocean north north west of Kolombangara (-7.41667°N, 156.75°W) by USMC Avengers. Survivors rescued by JAPANESE DESTROYER Kiyonami.

21 July

 * SS Empire Florizel (🇬🇧 United Kingdom): World War II: Allied invasion of Sicily: The cargo ship was bombed and sunk at Augusta, Sicily by Luftwaffe aircraft.
 * SS Ocean Virtue (🇬🇧 United Kingdom): World War II: The Ocean ship was bombed and sunk at Augusta, Sicily, Italy by Luftwaffe aircraft. She was salvaged later that year and converted with passenger accommodation in 1946.
 * JAPANESE SUBMARINE Ro-107 : World War II: The Ro-100-class submarine was sunk by USS Taylor east of Kolombangara.
 * SS Saipan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean north of Palau by USS Haddock (SS-231).
 * GS U-662 : World War II: The Type VIIC submarine was depth charged and sunk in the Amazon Estuary (3.93333°N, -48.76667°W) by a Consolidated PBY Catalina aircraft of the United States Navy with the loss of 44 of her 47 crew. Survivors were rescued by USS Siren (PY-13).

22 July

 * SS Empire Moon (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and damaged in the Mediterranean Sea (36.7°N, 15.33333°W) by GS U-81 (1941) . She was towed to Syracuse, Sicily and beached. All 48 crew survived. Although declared a total loss, she was refloated in June 1945, repaired and returned to service.
 * HMS MTB 288 (MTB288) : World War II: The Vosper 72' class Motor Torpedo Boat was bombed and sunk by German aircraft off Augusta, Sicily.
 * JAPANESE SEAPLANE CARRIER Nisshin : World War II: The Seaplane Carrier was bombed and sunk by US divebombers off the south east tip of Bouganville(-6.55°N, 156.16667°W). 539 troops and an undetermined number of crew killed, 91 troops and 87 crew rescued.

23 July

 * MV Alcides (1930) (🇳🇴 Norway): World War II: The tanker was torpedoed and sunk in the Indian Ocean (approximately -3°N, 68°W) by JAPANESE SUBMARINE I-10 . Twelve of her 52 crew were killed. The 40 survivors took to the lifeboats. Three officers were taken on board I-10 as prisoners of war; the other 37 crew were massacred in the lifeboats.
 * ITALIAN SUBMARINE Ascianghi : World War II: The Adua-class submarine was depth charged and sunk in the Mediterranean Sea 10 nmi off Augusta, Sicily by HMS Eclipse (H08) and HMS Laforey (G99) (both ). There were some survivors.
 * USS LCT-196 (LCT-196) : World War II: The LCT Mk 5-class Landing Craft, Tank sank in a storm off Salerno.
 * GERMAN MINESWEEPER M-152 : World War II: The minesweeper struck a mine and sank in the Gironde estuary, France.
 * GS U-527 : World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean (35.41667°N, -27.93333°W) by Grumman TBF Avenger aircraft based on USS Bogue (CVE-9) with the loss of 40 of her 49 crew.
 * GS U-598 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean off Natal, Brazil (-4.08333°N, -33.38333°W) by two Consolidated B-24 Liberator aircraft of the United States Navy with the loss of 43 of her 45 crew.
 * GS U-613 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south of the Azores, Portugal (35.58333°N, -28.6°W) by USS George E. Badger (AVD-3) with the loss of all 48 crew.

24 July

 * SS Fort Chilcotin (🇬🇧 United Kingdom): World War II: The Fort ship was torpedoed and sunk in the Atlantic Ocean 420 nmi east south east of Bahia, Brazil (-15.05°N, -32.58333°W) by GS U-172 with the loss of four of her 57 crew. Survivors were rescued by SS Tacito (🇦🇷 Argentina).
 * SS Henzada (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 100 nmi south west of Rio de Janeiro, Brazil (-25.5°N, -44°W) by GS U-199 with the loss of two of her 64 crew. Survivors were rescued by MV Baltic (1920) (🇵🇦 Panama).
 * MV Pegasus (Doxford, 1930) (🇸🇪 Sweden): World War II: The tanker was torpedoed and sunk in the Indian Ocean south west of Madagascar (-28.08333°N, 37.66667°W) by GS U-197 . All 38 crew were rescued by R-2 (Ensign of the South African Air Force 1940-1951.svg South African Air Force) and HMY Virginia.
 * GS U-459 : World War II: The Type XIV submarine was attacked in the Atlantic Ocean off Cape Ortegal, Spain (45.88333°N, -10.63333°W) by Vickers Wellington aircraft of 172 and 547 Squadrons, Royal Air Force with the loss of eighteen of her 59 crew. She was consequently scuttled due to damaged received.
 * GS U-622 : World War II: The Type VIIC submarine was sunk at Trondheim, Sør-Trøndelag, Norway (63.45°N, 10.38333°W) in a United States Army Air Forces raid.

25 July

 * SS General Artigas (1923) (🇩🇪 Germany): World War II: The cargo ship was bombed and sunk off Hamburg, Germany.
 * SS Haakon Jarl (1940) (🇳🇴 Norway): World War II: The cargo ship was bombed and sunk at Hamburg, Germany in an Allied air raid. She was on her maiden voyage at the time. Refloated in November 1943, repairs completed in February 1947 and re-entered service as Svein Jarl.
 * T-904 : World War II: The naval trawler struck a mine and sank in the Yugor Strait (69.56667°N, 59.93333°W) with the loss of ten of her 45 crew. Survivors were rescued by T-879 and T-887 (both ).
 * SS Thames Maru : World War II: The Transport was torpedoed and sunk in the Pacific Ocean (2.76667°N, 148.58333°W) 240 miles north of Manus by USS Pompon (SS-267) . 2 Gunners and 4 crewmen killed.
 * SOVIET TRAWLER Zhdanov ( Soviet Union): World War II: The trawler struck a mine and sank in the Matochkin Strait, Soviet Union.

26 July

 * SS Alberto Fassio (1914) ( undefined): World War II: The tanker struck a mine and sank in the Gulf of Patras, Greece.
 * MV El Argentino (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk off Lisbon, Portugal by German aircraft.
 * GS U-359 : World War II: The Type VIIC submarine was depth charged and sunk in the Caribbean Sea south off the south west tip of Haiti (18.1°N, -75°W) by a Martin PBM Mariner aircraft of the United States Navy with the loss of all 47 crew.

27 July

 * SS Akademik Shokalski ( Soviet Union): World War II: The survey ship was shelled and sunk off Sporyji Navolok by GS U-255 with the loss of eleven of her 25 crew. Survivors were rescued by Poljarnik ( Soviet Union).
 * JAPANESE MINELAYER Hirashima : World War II: The Sokuten-class minelayer was torpedoed and sunk in the East China Sea west of the Goto Islands, off Cape Ose, Fukue Jima (-2.83333°N, 149.01667°W) by USS Sawfish (SS-276).
 * JAPANESE SUBMARINE I-168 : World War II: The Kaidai-class submarine was torpedoed and sunk in the Steffen Strait (31°N, 130.55°W) by USS Scamp (SS-277) with the loss of all 97 hands.
 * HMS LCT 353 (LCT353) : World War II: The Mk 3 Landing Craft, Tank was bombed and sunk off Syracuse by Italian aircraft.

28 July

 * SS Rosalia (🇳🇱 Netherlands): World War II: The tanker was torpedoed and sunk in the Caribbean Sea (12.11667°N, -69.21667°W) by GS U-615 with the loss of 23 of her 36 crew. Survivors were rescued by HNLMS H-8 and HNLMS MBR-50 (both ).
 * GS U-159 (1941) : World War II: The Type IXC submarine was depth charged and sunk in the Caribbean Sea south of the Dominican Republic (15.78333°N, -68.5°W by a Martin PBM Mariner aircraft of the United States Navy with the loss of all 53 crew.
 * GS U-404 : World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay north west of Cape Ortegal, Spain (45.88333°N, -9.41667°W) by Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force and 4 Anti-Submarine Squadron, United States Army Air Forces.

29 July

 * MV Cornish City (1936) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean (-27.33333°N, 57.16667°W) by GS U-177 with the loss of 37 of her 43 crew. Survivors were rescued  by HMAS Nizam (G38).
 * Pietro Micca : World War II: The Pietro-Micca-class submarine was sunk in the entrance to the Adriatic Sea (39.8°N, 18.71667°W) by HMS Trooper (N91), ).
 * GS U-614 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north west of Cape Finisterre, Spain (46.7°N, -11.05°W) by a Vickers Wellington aircraft of 172 Squadron, Royal Air Force with the loss of all 49 crew.

30 July

 * MV Emba ( Soviet Union): World War II: The tanker was torpedoed and sunk at Suchumi by GS U-24 (1936).
 * T-911 : World War II: Convoy BA 12: The auxiliary minesweeper was torpedoed and sunk in the Barents Sea off Novaya Zemlya (71.11667°N, 51.83333°W by GS U-703 with the loss of 28 of her 42 crew. Survivors were rescued by T-901.
 * GS U-43 (1939) : World War II: The Type IXA submarine was torpedoed and sunk in the Atlantic Ocean (34.95°N, -35.18333°W) by Grumman TBF Avenger aircraft based on USS Santee (CVE-29) with the loss of all 55 crew.
 * GS U-375 : World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea north west of Malta (36.66667°N, 12.46667°W) by USS PC-624.
 * GS U-461 : World War II: The Type XIV submarine was depth charged and sunk in the Bay of Biscay west of Cape Ortegal, Spain (45.55°N, -10.8°W) by a Short Sunderland aircraft of 461 Squadron, Royal Australian Air Force with the loss of 53 of her 68 crew.
 * GS U-462 : World War II: The Type XIV submarine was depth charged and sunk in the Bay of Biscay (45.55°N, -10.96667°W) by a Handley Page Halifax aircraft of 502 Squadron, Royal Air Force and by HMS Kite (U87), HMS Wild Goose (U45), HMS Woodcock (U90), HMS Woodpecker (U08) and HMS Wren (U28) (all ) with the loss of one of her 65 crew.
 * U-504 : World War II: The Type IXC submarine was sunk in the Bay of Biscay by HMS Kite, HMS Wild Goose, HMS Wren and HMS Woodpecker (all ) with the loss of all 53 crew.
 * GS U-591 : World War II: The Type VIIC submarine was depth charged and sunk in the South Atlantic (-8.6°N, -34.56667°W) by a Lockheed Ventura aircraft of the United States Navy with the loss of nineteen of her 47 crew.

31 July

 * JAPANESE AIRCRAFT TRANSPORT Mogamigawa Maru : World War II: The Aircraft Transport was torpedoed and sunk in the South China Sea (11.06667°N, 153.3°W) north of Truk by USS Pogy (SS-266) . 130 crew and passenger killed, 600 survivors rescued by JAPANESE TRANSPORT Seiko Maru.
 * GS U-199 : World War II: The Type IXD2 submarine was depth charged and sunk in the South Atlantic (-23.9°N, -42.9°W) by a Consolidated PBY Catalina and Lockheed Hudson aircraft of the Marinha do Brasil and a Martin PBM Mariner aircraft of the United States Navy with the loss of 49 of her 61 crew. Survivors were rescued by USS Barnegat (AVP-10).

Unknown date

 * GERMAN MINESWEEPER M-10 : World War II: The minesweeper was sunk by gunfire off Lorient, France sometime in July.
 * SS Manchester Citizen (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk.
 * HMS Parthian (N75) : World War II: The Parthian-class submarine was lost in the Adriatic Sea sometime after 28 July with the loss of all 65 crew.
 * SOVIET SUBMARINE ShCh-422 : World War II: The was lost off northern Norway sometime in July.
 * MV Shushman (🇹🇷 Turkey): World War II: The cargo ship was sunk off Fenike, probably by a Regia Marina ship.
 * GS U-647 : World War II: The Type VIIC submarine was lost on patrol in the Atlantic Ocean north of the Shetland Islands, United Kingdom on or after 28 July with the loss of all 48 crew. Cause unknown.