List of shipwrecks in July 1940

The list of shipwrecks in 1940 includes all ships sunk, foundered, grounded, or otherwise lost during 1940. Most of the ships listed here were lost in connection with World War II.

1 July
For the loss of Avelona Star'' on this day, see the entry for 30 June 1940
 * SS Adamastos (🇬🇷 Greece): World War II: The cargo ship was captured in the Atlantic Ocean (46.33333°N, -14.5°W) by GS U-29 (1936) and scuttled by gunfire. All 25 crew survived.
 * MV Beignon (🇬🇧 United Kingdom): World War II: Convoy SL 36: The cargo ship was torpedoed and sunk in the Bay of Biscay (47.33333°N, -10.5°W) by GS U-30 (1936) with the loss of three of her 33 crew and three survivors from SS Avelona Star (🇬🇧 United Kingdom). The survivors were rescued by HMS Vesper (D55) and HMS Windsor (D42) (both ).
 * SS Clearton (🇬🇧 United Kingdom): World War II: Convoy SL 36: The cargo ship was torpedoed and sunk in the Bay of Biscay west of Ouessant, Finistère, France (47.88333°N, -9.5°W) by GS U-102 (1940) with the loss of eight of her 34 crew. Survivors were rescued by HMS Vansittart (D64).
 * Tweedledee (🇬🇧 United Kingdom): World War II: The special service vessel was sunk as a blockship.
 * Tweedledum (🇬🇧 United Kingdom): World War II: The special service vessel was sunk as a blockship.
 * GS U-26 (1936) : World War II: The Type IA submarine was depth charged and damaged in the Atlantic Ocean off the Bishop Rock (48.05°N, -11.5°W) by a Short Sunderland of 10 Squadron, Royal Australian Air Force and HMS Gladiolus (K34) . She sank the next day. All 44 crew were rescued by HMS Rochester (L50).
 * GS U-102 (1940) : World War II: The Type VIIB submarine was depth charged and sunk in the Atlantic Ocean south west of Ireland (48.55°N, -10.43333°W) by HMS Vansittart with the loss of all 43 crew.

2 July

 * SS Aeneas (1910) (🇬🇧 United Kingdom): World War II: Convoy OA 172G: The ocean liner was bombed and damaged in the English Channel 20 nmi south east of Start Point, Devon by Luftwaffe aircraft with the loss of 21 crew. The survivors were rescued by HMS Witherington (D76) . The wreck was scuttled two days later at approximately 50°N, -3°W.
 * SS Arandora Star (🇬🇧 United Kingdom): World War II: The prisoner of war ship was torpedoed and sunk in the Atlantic Ocean north west of Ireland (55.33333°N, -10.55°W by GS U-47 (1938) with the loss of 740 of the 1,608 people on board. The survivors were rescued by HMCS St. Laurent (H83).
 * MV Athellaird (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and damaged in the Atlantic Ocean (47.4°N, -16.81667°W) by GS U-29 (1936) (. All 42 crew were rescued by HMS Sandwich (L12) ). Athellaird sank the next day.
 * GERMAN TORPEDO BOAT S-23 : World War II: The torpedo boat struck a mine and was damaged in the North Sea east of South Foreland, Kent, United Kingdom. She was taken in tow but subsequently sank.
 * SS Santa Margarita (🇵🇦 Panama): World War II: The cargo ship was shelled and sunk in the Atlantic Ocean north west of Cape Finisterre, Spain (47°N, -15.5°W) by GS U-29 (1936) with the loss of three of her 39 crew. Twenty-one crew were rescued by SS King John (🇬🇧 United Kingdom).

3 July

 * Bijou (🇬🇧 United Kingdom): World War II: The steam barge was bombed and sunk by Luftwaffe aircraft in the River Stour at Mistley, Essex. All crew were rescued.
 * Bretagne : World War II: Operation Catapult: The Bretagne-class battleship was shelled and sunk at Mers-el-Kébir, Algeria by the Royal Navy. with the loss of 1,012 crew.
 * SS Cygnus (1920) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk off Egersund, Rogaland (58.3°N, 5.21667°W by HMS Snapper (39S).
 * FRENCH BATTLESHIP Dunkerque : World War II: Operation Catapult: The was shelled and damaged at Mers-el-Kébir, Algeria by the Royal Navy with the loss of 46 crew. She was later salvaged and placed under repair.
 * James 83 (🇬🇧 United Kingdom): World War II: The special services ship was sunk as a blockship.
 * FRENCH DESTROYER Mistral : World War II: Operation Catapult: The was partially scuttled at Plymouth Dockyard, Devon. Later salvaged by the British and entered service as HMS Mistral.
 * FRENCH DESTROYER Mogador : World War II: Operation Catapult: The was shelled and sunk by the Royal Navy at Mers-el-Kébir, Algeria with the loss of eighteen crew. She was later salvaged, repaired and returned to service.
 * FRENCH BATTLESHIP Provence : World War II: Operation Catapult: The was shelled and damaged by the Royal Navy at Mers-el-Kébir, Algeria with the loss of three crew. She was beached to prevent her sinking. Subsequently repaired and returned to service.

4 July

 * SS Britsum (1929) (🇳🇱 Netherlands): World War II: Convoy OA 178: The cargo ship was bombed and sunk in the English Channel off Selsey Bill, West Sussex (50.06667°N, -1.91667°W) Junkers Ju 87 aircraft of StG2, Luftwaffe.
 * SS Coquetmouth (🇬🇧 United Kingdom): World War II: The dredger struck a mine and sank in the North Sea off Amble, Northumberland with the loss of three crew.
 * MV Dallas City (🇬🇧 United Kingdom): World War II: Convoy OA 178: The cargo ship was bombed and damaged in the English Channel south of Dorset (50.15°N, -2.01667°W) by Junkers Ju 87 aircraft of StG2, Luftwaffe. She collided with SS Flimstone (🇬🇧 United Kingdom) and sank. All crew were rescued by HMS Shikari (1919).
 * SS Deucalion (🇳🇱 Netherlands): World War II: Convoy OA 178: The cargo ship was bombed and sunk in the English Channel 20 nmi south south west of Portland Bill, Dorset by Junkers Ju 87 aircraft of StG2, Luftwaffe . Twenty seven crew survived.
 * SS Elmcrest (1911) (🇬🇧 United Kingdom) World War II: Convoy OA 178: The Crest Line Shipping Co. (London) owned 5,032 grt cargo ship was torpedoed and sunk in the English Channel 13 nmi south of Portland Bill by GERMAN TORPEDO BOAT S-19 ( with the loss of sixteen crew. Survivors were rescued by HMS Sabre (1918).
 * HMS Foylebank : World War II: The anti-aircraft ship - formerly MV Foylebank - was bombed and damaged at Portland Harbour, Dorset by Junkers Ju 87 aircraft of StG2, Luftwaffe. She sank the next day with the loss of 176 of her 323 crew.
 * SS Hartlepool (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk 16 nmi off Portland Bill, by GERMAN TORPEDO BOAT S-20 and GERMAN TORPEDO BOAT S-26 (both ). The survivors were rescued by HMS Scimitar.
 * SS Kolga (🇪🇪 Estonia): World War II: Convoy OA 178: The cargo ship was bombed and sunk in the English Channel south of the Isle of Portland, Dorset (50.21667°N, -2°W) Junkers Ju 87 aircraft of StG2, Luftwaffe with the loss of one crew member.
 * Remembrance (🇬🇧 United Kingdom): World War II: The fishing vessel struck a mine and sank in the English Channel (51.88333°N, 1.36667°W). Both crew were rescued.
 * Rigault de Genouilly : World War II: Operation Catapult: The Bougainville-class aviso was torpedoed and sunk in the Mediterranean Sea north of Matifou, Algeria by HMS Pandora
 * ST Silverdial (🇬🇧 United Kingdom): The tug was bombed and sunk in Portland Harbour by Junkers Ju 87 aircraft of StG2, Luftwaffe.

5 July

 * Liguria : World War II: The troopship was torpedoed and damaged in the Mediterranean Sea off Tobruk, Libya by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918) . She was beached to prevent her sinking.
 * SS Magog (🇨🇦 Canada): World War II: Convoy HX 53: The cargo ship straggled behind the convoy. She was torpedoed, shelled, and split in two in the Atlantic Ocean 58 nmi west south west of the Fastnet Rock by GS U-99 (1940) . The stern section sank. All 23 crew survived and were rescued by SS Sidra (🇸🇪 Sweden). The bow section sank three days later at 50.53333°N, -11.33333°W.
 * SS Manzoni ( undefined): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea off Tobruk by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918) . She was later salvaged by the British.
 * SS Serenitas ( undefined): World War II: The cargo ship was torpedoed and damaged in the Mediterranean Sea off Tobruk by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918) and was beached. She was later salvaged by the British.
 * HMS Shark (54S) : World War II: The S-class submarine was bombed and damaged west south west of Egersund, Norway by Dornier Do 17 aircraft of the Luftwaffe and surrendered. She was taken under tow by GERMAN MINESWEEPER M-1803, GERMAN MINESWEEPER M-1806 and GERMAN MINESWEEPER M-1807 (all ) but sank the next day.
 * HMS Whirlwind : World War II: The W-class destroyer was torpedoed and severely damaged in the Atlantic Ocean south west of Ireland (50.28333°N, -8.8°W) by GS U-34 (1936) with the loss of 57 crew. The survivors were rescued by HMS Westcott (D47), which scuttled the ship with gunfire.
 * Zeffiro : World War II: The Turbine-class destroyer was torpedoed and sunk in the Mediterranean Sea off Tobruk by Fairey Swordfish aircraft from HMS Eagle (1918).

6 July

 * SS Angele Mabro ( undefined): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay west south west of Brest, Finistère, France by GS U-30 (1936) with the loss of all hands.
 * SS Axum (🇩🇪 Germany): World War II: The cargo ship was shelled and sunk at Bardia, Libya by HMS Caledon (D53), HMS Capetown (D88), HMS Ilex (D61), HMS Imperial (D09), HMS Janus (F53) and HMS Juno (F46) (all.
 * FRENCH BATTLESHIP Dunkerque : World War II: Operation Lever: The was torpedoed at Mers-el-Kébir by aircraft based on HMS Ark Royal (91)  and sunk by the explosion of Terre Neuve  with the loss of 154 crew. She was subsequently refloated, towed to Toulon, Var, France and placed under repair.
 * FRENCH MINESWEEPER Esterel V : World War II: Operation Lever: The auxiliary minesweeper was torpedoed and sunk at Mers-el-Kébir by aircraft based on HMS Ark Royal (91).
 * Terre Neuve : World War II: Operation Lever: The auxiliary patrol boat was torpedoed and sunk by the detonation of her depth charges, at Mers-el-Kébir, by aircraft based on HMS Ark Royal (91) with the loss of eight crew.
 * SS Vapper (🇪🇪 Estonia): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Land's End, Cornwall, United Kingdom (49.5°N, -9.25°W) by GS U-34 (1936) with the loss of one of her 34 crew. The survivors were rescued by HMCS Restigouche (H00).
 * GERMAN SUBMARINE CHASER UJ-D : World War II: The submarine chaser struck a mine and sank in the Norwegian Sea off the coast of Norway (63.25°N, 7.65°W).

7 July

 * SS Almora (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank.
 * SS Bissen (🇸🇪 Sweden): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 80 nmi west of Cape Clear Island, Ireland (50.1°N, -10.38333°W). All 20 crew were rescued by a Royal Navy destroyer.
 * SS Delambre (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the South Atlantic (-6.21667°N, -25.1°W) by GERMAN AUXILIARY CRUISER Thor.
 * SS Lucrecia (🇳🇱 Netherlands): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean south west of Land's End, Cornwall, United Kingdom (49.83333°N, -8.11667°W) by GS U-34 (1936) with the loss of two of her 30 crew. The survivors were rescued by SS Alferrarede (🇵🇹 Portugal).
 * SS Sea Glory (🇬🇧 United Kingdom): World War II: The coaster was torpedoed and sunk in the Atlantic Ocean 20 nmi south of the Fastnet Rock by GS U-99 (1940) with the loss of all 29 crew.

8 July

 * HMT Cayton Wyke : World War II: The naval trawler was torpedoed and sunk in the English Channel south east of Dover, Kent by GERMAN TORPEDO BOAT S-36 with the loss of seventeen crew.
 * HMS Escort (H66) : World War II: The E-class destroyer was torpedoed and damaged in the Mediterranean Sea east of Gibraltar by Guglielmo Marconi with the loss of two of her 145 crew. An attempt was made to tow her to Gibraltar, but she foundered on 11 July.
 * SS Humber Arm (🇬🇧 United Kingdom): World War II: Convoy HX 53: The cargo ship was torpedoed and sunk in the Celtic Sea 60 nmi south of the Fastnet Rock (50.6°N, -9.4°W by GS U-99 (1940) . All 43 crew were rescued by HMS Scimitar (H21) and HMS Vanquisher (D54) (both ).
 * James 9 (🇬🇧 United Kingdom): World War II: The special services ship was sunk as a blockship.
 * FRENCH SLOOP Suippe : World War II: The sloop was bombed and damaged at Falmouth, Cornwall by Luftwaffe aircraft and was beached to prevent her sinking.

9 July

 * SS Aylesbury (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (48.65°N, -13.55°W) by GS U-43 (1939) . All 35 crew were rescued by HMS Harvester (H19) and HMS Havelock (H88) (both ).
 * SS Bruges (🇧🇪 Belgium): World War II: The cargo ship was shelled and sunk in the South Atlantic (-4°N, -28°W) by GERMAN AUXILIARY CRUISER Thor . The crew were taken as prisoners of war.
 * HMS Salmon (N65) : World War II: The S-class submarine struck a mine and sank off Egersund, Rogaland, Norway (57.36667°N, 5°W) with the loss of all 39 crew.
 * SS Talvaldis (🇱🇻 Latvia): World War II: Convoy CW 2: The cargo ship was bombed and sunk in the English Channel south of Start Point, Devon, United Kingdom by Luftwaffe aircraft with the loss of one crew member.
 * SS Tiiu (🇪🇪 Estonia): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of Cornwall, United Kingdom (50.33333°N, -12°W) by GS U-34 (1936) . All crew were rescued by a British trawler.

10 July

 * SS Alwaki (🇳🇱 Netherlands): World War II: Convoy OA 180: The cargo ship was torpedoed and sunk in the North Sea 10 nmi off Cape Wrath, Sutherland, United Kingdom (58.76667°N, -4.76667°W) by GS U-61 (1939) . All eight crew were rescued by SS Harmonic (🇬🇧 United Kingdom).
 * SS Bill S (🇳🇱 Netherlands): World War II: Convoy CW 3: The coaster was bombed and sunk in the English Channel off Dungeness, Kent by Luftwaffe aircraft. All crew were rescued.
 * SS Cheik (🇫🇷 France): World War II: The cargo ship was torpedoed and sunk by ITALIAN SUBMARINE Scire 54 nmi off Semaphore d'Asmare.
 * HMS Corfu : The armed merchant cruiser collided with HMS Hermes (95) in the Atlantic Ocean and was damaged and abandoned. She was later reboarded and subsequently taken in tow by HMS Milford (L51) and the tug ST Donau (🇳🇱 Netherlands) and reached Freetown, Sierra Leone on 13 July. She was beached on 19 August for repairs to her bow and re-entered service in early 1941.
 * SS Davisian (🇬🇧 United Kingdom): World War II: The cargo ship was shelled, torpedoed and sunk in the Caribbean Sea 450 nmi north of Guadeloupe (18.15°N, -54.66667°W) by GERMAN AUXILIARY CRUISER Widder . All crew were taken as prisoners of war.
 * SS Glenburnie (🇨🇦 Canada): World War II: The cargo ship was bombed and sunk.
 * SS Hellenic Skipper (🇬🇷 Greece): The passenger ship caught fire. She sank on 13 July off Astoria, Washington, United States after burning for three days.
 * Leone Pancaldo : World War II: The Navigatori-class destroyer was torpedoed and sunk off Augusta, Sicily, by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918) . She was later salvaged, repaired and returned to service.
 * SS Petsamo (1907) (🇫🇮 Finland): World War II: The cargo liner was torpedoed and sunk in the Celtic Sea south of County Cork, Ireland (51.13333°N, -9.36667°W) by GS U-34 (1936) with the loss of four of her 38 crew.
 * SS Tascalusa (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk at Falmouth, Cornwall by Luftwaffe aircraft. She was refloated on 29 August and beached, but declared a constructive total loss and sold for scrap in November.
 * SS Waterloo (🇨🇦 Canada): World War II: The cargo ship was bombed and sunk in the North Sea off Winterton-on-Sea, Norfolk, United Kingdom by Luftwaffe aircraft.

11 July

 * SS Beme (🇵🇦 Panama): World War II: The tanker was shelled and sunk by ITALIAN SUBMARINE Tarantini in the Mediterraneran Sea off Haifa, Palestine (33.2°N, 33.63333°W). All crew were rescued.
 * SS City of Baghdad (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the South Atlantic (0.23333°N, 86.56667°W) by GERMAN AUXILIARY CRUISER Atlantis with the loss of two of her 83 crew. The survivors were taken as prisoners of war.
 * SS Janna (1919) (🇳🇴 Norway): World War II: Convoy HX 54: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean south west of Ireland (50.56667°N, -12.16667°W) by GS U-34 (1936) . All 25 crew were rescued.
 * MV Mallard (🇬🇧 United Kingdom): World War II: The coaster was torpedoed and sunk in the English Channel south of Bognor Regis, West Sussex (50.39389°N, -2.31972°W) by GERMAN TORPEDO BOAT S-26 with the loss of six of her nine crew. The survivors were rescued by S-26 and taken as prisoners of war.
 * Providentia (🇧🇪 Belgium): World War II: The fishing vessel was bombed and sunk in the Atlantic Ocean (49.91667°N, -9.2°W) by Luftwaffe aircraft.
 * HMS Warrior II : World War II: The anti-submarine yacht was bombed and sunk in the English Channel off Portland, Dorset by Luftwaffe aircraft with the loss of one crewmember.

12 July

 * SS Hornchurch (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea off the Aldeburgh Lightship (🇬🇧 United Kingdom) (52.1875°N, 1.875°W) by Luftwaffe aircraft. All crew were rescued by HMS Widgeon (L62).
 * SS Ia (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland by (51°N, -14°W) GS U-99 (1940) with the loss of three of her 30 crew.
 * Volante (🇬🇧 United Kingdom): World War II: The trawler was bombed and sunk in the Atlantic Ocean off Hvalba, Faroe Islands by Luftwaffe aircraft with the loss of one crew member.

13 July

 * SS Kemmendine (🇬🇧 United Kingdom): World War II: The ocean liner was shelled and sunk in the Indian Ocean (-4.2°N, 81.78333°W) by GERMAN AUXILIARY CRUISER Atlantis . Fifty seven crew and 23 passengers were taken as prisoners of war. Thirty of them would be lost when MV Tirrana (1937) ( was sunk on 21 September.
 * MV King John (1928) (🇬🇧 United Kingdom): World War II: The cargo ship was intercepted in the South Atlantic (20.66667°N, -59.43333°W) by GERMAN AUXILIARY CRUISER Widder and scuttled.

14 July

 * SS Gracefield (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the Caribbean Sea off Trinidad (-20.33333°N, -30.71667°W) by GERMAN AUXILIARY CRUISER Thor . The crew were taken as prisoners of war.
 * SS Island Queen (🇬🇧 United Kingdom): Convoy CW 5: The coaster was bombed and damaged in the English Channel off the Folkestone Gateway Lightship (🇬🇧 United Kingdom). She was taken in tow by HMT Kingston Alalite but sank with the loss of three crew.
 * Providentia (🇧🇪 Belgium): World War II: The trawler was bombed and sunk in St George's Channel (49.91667°N, -9.2°W with the loss of all hands.
 * Sarita (🇳🇴 Norway): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean off Cape Verde, Portugal (15.36667°N, -26.46667°W) by GS U-A . The survivors were rescued by SS Dunstan (🇬🇧 United Kingdom).
 * SS Thetis A (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west south west of the Isles of Scilly (47.66667°N, -13.33333°W) by GS U-52 (1939) with the loss of nine of her 29 crew.

15 July

 * SS Alpha (🇵🇹 Portugal): World War II: The coaster was bombed and sunk in the Atlantic Ocean south west of Cornwall, United Kingdom (48.85°N, -6.71667°W) by Luftwaffe aircraft. All crew were rescued by HMS Bedouin (F67), HMS Mashona (F59) and HMS Tartar (F43) (all ).
 * SS Bellerock (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine in the Bristol Channel (51.33333°N, -3.78333°W) and sank with the loss of seventeen crew.
 * SS City of Limerick (🇮🇪 Ireland): World War II: The cargo liner was bombed and sunk in the Atlantic Ocean 100 nmi due west of Ouessant, Finistère, France (48.65°N, -7.2°W) by Luftwaffe aircraft with the loss of two crew. The survivors were rescued by the trawler Roger Jeannine (🇧🇪 Belgium).
 * ST Draugen (🇳🇴 Norway): World War II: The tug struck a mine and sank in the Norwegian Sea off Salhus, Hordaland with the loss of six of her ten crew.
 * SS Evdoxia (1903) (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 40 nmi south west of the Bull Rock, Ireland by GS U-34 (1936) with the loss of one of her 23 crew.
 * SS Frossoula (🇵🇦 Panama): World War II: The cargo ship was bombed and sunk in the Atlantic Ocean 240 nmi north west of Cape Finisterre, Spain by Luftwaffe aircraft with the loss of four of her 36 crew.
 * SS Heworth (🇬🇧 United Kingdom): World War II: Convoy FN 223: The cargo ship was bombed and damaged in the North Sea 10 nmi south of the Aldeburgh Lightship (🇬🇧 United Kingdom) with the loss of four crew. She was taken in tow but later sank. Survivors were rescued by HMS Valorous (L00).
 * SS Merisaar (🇩🇪 Germany): World War II: The Estonian cargo ship had been captured on 12 July by GS U-99 (1940) and was ordered to sail to a French port. She was accidentally bombed and sunk off Queenstown, County Cork, Ireland (51°N, -14°W) by Luftwaffe aircraft.
 * SS Naftilos (🇬🇷 Greece): World War II: The cargo ship was shelled and sunk in the Bay of Biscay (48.08333°N, -10.41667°W) by GS U-34 (1936) ( with the loss of one of her 28 crew.
 * SS Zbaraz (🇵🇱 Poland): World War II: Convoy FN 223: The cargo ship was bombed and sunk in the North Sea 10 nmi south of the Aldeburgh Lightship (🇬🇧 United Kingdom). She was taken in tow by ST St Olaves (🇬🇧 United Kingdom) but sank. All crew were rescued by ST Muria and the trawler Vidonia (both 🇬🇧 United Kingdom).

16 July

 * HMS Imogen (D44) : The I-class destroyer was rammed and sunk in the North Sea off Duncansby Head, Scotland (58.56667°N, -2.9°W) by HMS Glasgow (C21) with the loss of nineteen of her 154 crew.
 * SS Pei Fu ( undefined): The cargo ship ran aground at Tsunoshima, Honshū, Japan and was wrecked.
 * HMS Phoenix (N96) : World War II: The Parthian-class submarine was torpedoed and sunk off Augusta, Sicily, Italy by Albatros with the loss of all 53 crew.
 * MV Scottish Minstrel (🇬🇧 United Kingdom): World War II: Convoy HX 55: The tanker was torpedoed and damaged in the Atlantic Ocean north west of County Donegal, Ireland (56.16667°N, -10.33333°W) by GS U-61 (1939) with the loss of nine of her 41 crew. The survivors were rescued by SS Fiscus (🇬🇧 United Kingdom). Scottish Minstrel sank the next day.
 * SS Wendover (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the South Atlantic (-23.13333°N, -34.81667°W) by GERMAN AUXILIARY CRUISER Thor  with the loss of four of her 41 crew. The survivors were rescued by Thor and made prisoners of war.

17 July

 * SS Clan Macfarlane (1922) (🇬🇧 United Kingdom): The cargo ship collided with SS Ganges (1930) (🇬🇧 United Kingdom in the Indian Ocean off Socotra, Aden and sank with the loss of 41 crew.
 * SS Fellside (🇬🇧 United Kingdom): World War II: Convoy OA 184: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean 135 nmi north west of Bloody Foreland, County Donegal, Ireland (56.15°N, -12.5°W) by GS U-43 (1939) with the loss of twelve of her 33 crew.
 * SS Leola (🇪🇪 Estonia): World War II: The cargo ship was bombed and sunk in the Atlantic Ocean 60 nmi west of the Isles of Scilly, United Kingdom (49°N, -7.5°W) by Luftwaffe aircraft with the loss of two crew. The survivors were rescued by Roger Jeannine (🇧🇪 Belgium).
 * SS Manipur (🇬🇧 United Kingdom): World War II: Convoy HX 55A: The cargo ship was torpedoed and sunk in the North Sea off Cape Wrath, Sutherland (58.23333°N, -5.23333°W) by GS U-57 (1938) with the loss of fourteen of her 78 crew. The survivors were rescued by HMCS Skeena (D59).
 * SS O A Brodin (🇸🇪 Sweden): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of the Orkney Islands (59.36667°N, -3.66667°W) by GS U-57 (1938) with the loss of three of her 24 crew. The survivors were rescued by HMT Sicyon.
 * HMS Steady : World War II: The naval tug struck a mine and sank in the English Channel off Newhaven, East Sussex.
 * SS Wiiri (🇫🇮 Finland): World War II: The cargo ship was bombed and sunk in the Mediterranean Sea 30 nmi off Malta by Regia Aeronautica aircraft. Twenty six crew were rescued.

18 July

 * SS Gyda (1920) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (55.83333°N, -9°W) by GS U-58 (1939) with the loss of eleven of her twenty crew. The survivors were rescued by SS Ville d'Arlon (🇧🇪 Belgium).
 * SS Sigurd Hurd (1925) (🇳🇴 Norway): The coaster ran aground on Jæren. Cargo was offloaded and she was refloated the next day. Taken in tow but capsized and sank.
 * GERMAN SUBMARINE CHASER UJ-126 : World War II: The submarine chaser was torpedoed and sunk in the North Sea north of Terschelling, Friesland, Netherlands (53.48333°N, 5.05°W) by HMS H31.
 * SS Woodbury (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (50.76667°N, -13.93333°W) by GS U-99 (1940) . All 35 crew survived.

19 July

 * Bartolomeo Colleoni : World War II: Battle of Cape Spada: The Condottieri-class cruiser was shelled and immobilized in the Mediterranean Sea off Cape Spada, Crete by HMAS Sydney (1934) . She was then torpedoed and sunk by HMS Hyperion (H97) and HMS Ilex (D61) (both ) with the loss of 121 of her 507 crew.
 * HMT Crestflower : World War II: The naval trawler was bombed and sunk in the English Channel south of the Isle of Wight (50.485°N, -1.28556°W) by Luftwaffe aircraft with the loss of two crew.
 * SS Pearlmoor (🇬🇧 United Kingdom): World War II: Convoy SL 38: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean west of County Donegal, Ireland (55.38333°N, -9.3°W) by GS U-62 (1939) with the loss of thirteen of her 39 crew.
 * SS Tela (🇳🇱 Netherlands): World War II: The cargo ship was shelled and sunk in the South Atlantic (-14°N, -33°W) by GERMAN AUXILIARY CRUISER Thor . All 33 crew were rescued and made prisoners of war.
 * RFA War Sepoy : World War II: The fleet oiler was bombed and severely damaged at Dover, Kent by Luftwaffe aircraft. She broke in two, and was subsequently used as a blockship.

20 July

 * HMS Brazen (H80) : World War II: Convoy CW 7: The B-class destroyer was bombed and damaged in the English Channel off Dover, Kent by Luftwaffe aircraft with the loss of one of her 138 crew. She was taken in tow by ST Lady Brassey (🇬🇧 United Kingdom), but broke in two and sank the next day at 51.01806°N, 1.2875°W.
 * Nembo : World War II: The Turbine-class destroyer was torpedoed and sunk in the Gulf of Bomba, off Tobruk Libya by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918).
 * Ostro : World War II: The Turbine-class destroyer was torpedoed and sunk in the Gulf of Bomba, off Tobruk by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918).
 * Sereno ( undefined): World War II: The cargo ship was torpedoed and sunk in the Gulf of Bomba, off Tobruk by Fairey Swordfish aircraft of 813 Squadron, Fleet Air Arm, based on HMS Eagle (1918).
 * SS Pulborough (🇬🇧 United Kingdom): World War II: Convoy CW 7: The cargo ship was bombed and sunk in the English Channel off Dover, Kent by Luftwaffe aircraft. The seventeen survivors were rescued by the trawler Lady Pulborough 🇬🇧 United Kingdom).
 * SS Troutpool (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in Belfast Lough (54.66667°N, -5.66667°W) with the loss of eleven crew.

21 July

 * SS Ellaroy (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (42.5°N, -12.6°W by GS U-30 (1936) . All sixteen crew were rescued by the trawler Felix Montenegro (🇪🇸 Spain).
 * SS Terlings (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the English Channel 10 nmi south west of St Catherine's Point, Isle of Wight by Dornier Do 17 and Messerschmitt Me 110 aircraft of the Luftwaffe with the loss of ten crew of her 28 crew. The survivors were rescued by HMS Scimitar (H21).

22 July

 * HMT Campina : World War II: The naval trawler struck a mine in the Irish Sea off Holyhead, Anglesey and sank with the loss of all eleven crew.

23 July

 * HMS Narwhal (N45) : World War II: The Grampus-class submarine was bombed and sunk in the Norwegian Sea (63.26667°N, 7.21667°W) by a Dornier Do 17 aircraft of the Luftwaffe with the loss of all 59 crew.
 * MV The Lady Mostyn (🇬🇧 United Kingdom): World War II: The coaster struck a mine and sank in Liverpool Bay off the Formby Lightship (🇬🇧 United Kingdom) with the loss of all hands.

24 July

 * Celio ( undefined): World War II: The passenger ship struck a mine and sank in the Mediterranean Sea east of Tolmeitha, Libya (32.65°N, 21.05°W).
 * HMT Fleming (H3) : World War II: The naval trawler was bombed and sunk in the Thames Estuary east of Essex by Luftwaffe aircraft with the loss of nineteen of her 22 crew. The survivors were rescued by HMT Corena.
 * SS Kem (🇳🇴 Norway): World War II: The cargo ship struck a mine and sank in the Norwegian Sea north of Svåholmen (58.35°N, 6.01667°W).
 * HMT Kingston Galena : World War II: The naval trawler was bombed and sunk in the English Channel off Dover, Kent with the loss of sixteen crew.
 * Meknès : World War II: The troopship was torpedoed and sunk in the English Channel by GERMAN TORPEDO BOAT S-27 with the loss of 416 of the 1,381 people on board. The survivors were rescued by HMS Sabre (1918), HMS Shikari (1919), HMS Viscount (1917) and HMS Wolverine (D78) (all ).
 * HMT Rodino : The naval trawler sank in the English Channel off Dover with the loss of four crew.
 * SS Trio (1884) (🇫🇮 Finland): World War II: The cargo ship struck a mine and sank in the Wadden Sea off Borkum, Lower Saxony, Germany. All crew were rescued.

25 July

 * SS Corhaven (🇬🇧 United Kingdom): World War II Convoy CW 8: The coaster was bombed and sunk in the English Channel off Dover, Kent by Junkers Ju 87 aircraft of I Gruppe, StG 1 (I/StG 1) and IV Gruppe, LG 1 (IV/LG 1), Luftwaffe. All crew were rescued.
 * SS Henry Moon (🇬🇧 United Kingdom): World War II: Convoy CW 8: The cargo ship was bombed and sunk in the English Channel off Folkestone, Kent by Junkers Ju 87 aircraft of I/StG 1 and IV/LG 1, Luftwaffe with the loss of one of her crew.
 * SS Leo (🇬🇧 United Kingdom): World War II: Convoy CW 8: The cargo ship was bombed and sunk in the English Channel off Dover, Kent by Junkers Ju 87 aircraft of I/StG 1 and IV/LG 1, Luftwaffe with the loss of six crew.
 * GERMAN TORPEDO BOAT Luchs : World War II: The Raubtier-class torpedo boat was torpedoed and sunk in the North Sea off Utsira, Hordaland, Norway (58.5°N, 4.5°W) by HMS Thames (N71).
 * SS Polgrange (🇬🇧 United Kingdom): World War II: Convoy CW 8: The cargo ship was bombed and sunk in the English Channel off Dover by Junkers Ju 87 aircraft of I/StG 1 and IV/LG 1, Luftwaffe with the loss of two crew.
 * SS Portslade (🇬🇧 United Kingdom): World War II: Convoy CW 8: The collier was bombed and sunk in the English Channel off New Romney, Kent by Junkers Ju 87 aircraft of I/StG 1 and IV/LG 1, Luftwaffe. All crew were rescued.
 * HMS Thames (N71) : World War II: The struck a mine and sank in the North Sea off Stavanger, Rogaland, Norway (57.33333°N, 3.16667°W). with the loss of all 62 crew.

26 July

 * MV Accra (🇬🇧 United Kingdom): World War II: Convoy OB 188: The ocean liner was torpoedoed and sunk in the Atlantic Ocean 320 nmi west of Bloody Foreland, Ireland (55.66667°N, -16.46667°W) by GS U-34 (1936) with the loss of 24 of the 499 people on board. The survivors were rescued by HMS Clarkia (K88), HMS Enchantress (L66) (both ), SS Hollinside (🇬🇧 United Kingdom) and SS Loke (1915) (🇳🇴 Norway.
 * MV Balzac (1921) (🇳🇴 Norway): World War II: The cargo ship struck a mine and sank in the North Sea off Sunderland, Co Durham, United Kingdom (54.9°N, -1.31667°W with the loss of nine of her twenty crew.
 * SS Broadhurst (🇬🇧 United Kingdom): World War II: Convoy CW 8: The cargo ship was torpedoed and sunk in the English Channel off Shoreham, West Sussex by GERMAN TORPEDO BOAT S-20 with the loss of four crew.
 * SS Haytor (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in the North Sea east of Frinton-on-Sea, Essex.
 * SS London Trader (🇬🇧 United Kingdom): World War II: Convoy CW 8: The cargo ship was torpedoed and sunk in the English Channel south of Worthing, West Sussex by GERMAN TORPEDO BOAT S-19.
 * SS Lulonga (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the English Channel, 10 nmi south of Shoreham, West Sussex by GERMAN TORPEDO BOAT S-27.
 * GERMAN MINESWEEPER M-61 : World War II: The minesweeper struck a mine and sank in the North Sea off Hoek van Holland, South Holland, Netherlands.
 * GERMAN MINESWEEPER M-89 : World War II: The minesweeper struck a mine and sank in the North Sea off Hoek van Holland.
 * GERMAN MINESWEEPER M-136 : World War II: The minesweeper struck a mine and sank in the North Sea off Hoek van Holland.
 * MV Montan (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank in the Wadden Sea off Spiekeroog, Lower Saxony.
 * MV Vinemoor (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of the Outer Hebrides (55.71667°N, -16.41667°W) by GS U-34 (1936) . All 32 crew were rescued by HMS Clarkia (K88), HMS Enchantress (L66) (both ), SS Hollinside (🇬🇧 United Kingdom) and SS Loke (🇳🇴 Norway.

27 July

 * C4 : The submarine collided off Morro de la Vaca with Lepanto and sank.
 * Charles-Madeleine (🇧🇪 Belgium): World War II: The fishing vessel struck a mine and sank.
 * HMS Codrington (D65) : World War II: The A-class destroyer was bombed and severely damaged at Dover, Kent by Luftwaffe aircraft. She was beached with a broken back and declared a total loss.
 * SS Durdham (🇬🇧 United Kingdom): World War II: The dredger struck a mine and sank in the Bristol Channel off Cardiff, Glamorgan (51.38833°N, -3.14667°W) with the loss of eight crew.
 * SS Salvestria (🇬🇧 United Kingdom): World War II: Convoy HX 57: The whale factory ship struck a mine in the Firth of Forth and sank north east of Inchkeith, Fife with the loss of ten of her 57 crew.
 * SS Sambre (🇬🇧 United Kingdom): World War II: Convoy OB 188: The cargo ship was torpedo and sunk in the Atlantic Ocean (56.61667°N, -17.88333°W) by GS U-34 (1936) . All 48 crew were rescued by HMS Winchelsea (D46).
 * MV Thiara (🇬🇧 United Kingdom): World War II: Convoy OB 188: The tanker was torpedoed and sunk in the Atlantic Ocean west of the Outer Hebrides (56.61667°N, -17.93333°W by GS U-34 (1936) with the loss of 25 of the 61 people on board. The survivors were rescued by HMS Winchelsea (D46).
 * HMS Wren (1919) : World War II: The W-class destroyer was bombed and sunk in the North Sea off Aldeburgh, Suffolk (52.16667°N, 2.1°W) by Luftwaffe aircraft with the loss of 35 crew. The survivors were rescued by HMS Halcyon (J42) and HMS Montrose (D01) (both ).

28 July

 * SS Argo (Falck, 1898) (🇳🇴 Norway): World War II: The coaster struck a mine off Egersund and sank.
 * MV Auckland Star (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of Cape Clear Island, Ireland (52.28333°N, -12.53333°W) by GS U-99 (1940) . All 74 crew survived.
 * Ermioni (🇬🇷 Greece): World War II: The cargo ship was intercepted in the Aegean Sea off Kea Island, while taking military supplies to Italy, by HMS Neptune (20)  and  HMAS Sydney (D48)  and was scuttled.
 * Maski (🇳🇴 Norway): World War II: The yacht was scuttled in the North Sea by HMS Swordfish (61S), which rescued the four crew.
 * SS Orlock Head (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea at 58.73333°N, -4.35°W by Luftwaffe aircraft.
 * HMT Staunton : World War II: The naval trawler struck a mine and sank in the Thames Estuary east of Bradwell-on-Sea, Essex with the loss of all thirteen crew.

29 July

 * SS Clan Menzies (1938) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of Ireland (54.16667°N, -12°W) by GS U-99 (1940) with the loss of six of her 94 crew.
 * SS Clan Monroe (1918) (🇬🇧 United Kingdom): The cargo ship struck a mine off Harwich, Essex and was damaged. She was towed to Hollesley Bay, Suffolk and beached. Thirteen crew were killed.
 * HMS Delight (H38) : World War II: The D-class destroyer was bombed and damaged off Portland in a Luftwaffe air raid with 14 killed, 4 missing, and 56 of her 145 crew wounded. Sank in Portland Harbor in the early hours of the 30th.
 * SS Grønland (1922) (🇩🇰 Denmark): World War II: The cargo ship was bombed and sunk in Dover Harbour, Kent, United Kingdom with the loss of nineteen crew.
 * HMY Gulzar : World War II: The motor yacht was bombed and sunk at Dover, Kent by Luftwaffe aircraft. All crew were rescued.
 * Leach's Romance (🇬🇧 United Kingdom): World War II: The fishing vessel struck a mine and sank in the English Channel 10.5 nmi south of Kemp Town, East Sussex with the loss of all four crew.
 * SS Moidart (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in the North Sea off Felixtowe, Suffolk (51.98333°N, 1.81667°W) with the loss of eleven crew.
 * SS Ousebridge (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in the River Mersey off Southport, Lancashire with the loss of two crew.
 * SS Umvoti (1903) (🇬🇧 United Kingdom): World War II: The cargo ship was scuttled as a blockship at Dover, Kent.

30 July
No ships were lost on this day.

31 July

 * SS Domingo de Larrinaga (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the South Atlantic (-5.45°N, -18.35°W) by GERMAN AUXILIARY CRUISER Pinguin with the loss of eight of her 38 crew. The survivors were taken as prisoners of war.
 * SS Jamaica Progress (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Barra, Outer Hebrides (56.43333°N, -8.5°W) by GS U-99 (1940) with the loss of seven of her 47 crew. The survivors were rescued by SS Gloucester City (🇬🇧 United Kingdom).
 * SS Jersey City (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean north west of County Donegal, Ireland (55.78333°N, -9.3°W) by GS U-99 (1940) with the loss of two of her 45 crew. The survivors were rescued by the trawler Newland (🇬🇧 United Kingdom).
 * SS Loula (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea south of Crete by an Italian submarine. At least eleven of the eighteen crew survived.
 * SS Stalheim (1936) (🇳🇴 Norway): World War II: The cargo ship struck a mine and sank in the Bristol Channel off Port Talbot, Glamorgan, United Kingdom (51.57694°N, -3.83056°W) with the loss of five of the 21 people on board. Survivors were rescued by a RAF Rescue Launch.

Unknown date

 * SS Karstens (🇩🇪 Germany): World War II: The coaster was shelled and sunk by shore batteries at Ningpo, China.