List of shipwrecks in June 1940

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

1 June

 *  Aidee (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge was damaged by enemy action and was abandoned between Dunkerque, Nord, France and De Panne, West Flanders, Belgium. All crew were rescued.
 * Amulree (🇬🇧 United Kingdom): World War II: Operation Dynamo: The yacht collided with HMS Vimy in the Strait of Dover and sank.
 * HMT Argyllshire (GY 528) : World War II: Operation Dynamo: The naval trawler was torpedoed and sunk in the North Sea off Dunkerque by German motor torpedo boat S-35 . Five survivors were rescued by HMT Malabar.
 * HMS Astronomer : World War II: The boom defence vessel was torpedoed and sunk in the North Sea off the north coast of Aberdeenshire (58.01667°N, -2.2°W) by GS U-58 (1939) with the loss of four of her 105 crew. The survivors were rescued by HMT Leicester City (FY 223) and HMT Stoke City (FY 232) (both ).
 *  Barbara Jean (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge was damaged by enemy action at Dunkerque and was abandoned. Three of her crew were rescued.
 * HMS Basilisk (H11) : World War II: Operation Dynamo: The B-class destroyer was bombed and damaged in the North Sea off De Panne by Junkers Ju 87 aircraft of the Luftwaffe. She sank at 51.13333°N, 2.58333°W and the wreck was dispersed by shelling from HMS Whitehall (1919) . Seven of her 138 crew were killed.
 * HMS Brighton Queen : World War II: Operation Dynamo: The paddle minesweeper was shelled and sunk in the North Sea off Dunkerque. The survivors were rescued by HMS Saltash (J62).
 * FRENCH MINESWEEPER Denis Papin : World War II: Operation Dynamo: The auxiliary minesweeper was bombed and sunk in the North Sea off Dunkerque by Junkers Ju 87 aircraft of the Luftwaffe.
 *  Doris (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge stuck a mine and sank in the North Sea 3 nmi off Dunkerque.
 *  Duchess (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge struck a mine and sank in the North Sea 3 nmi east of Dunkerque. All crew were rescued.
 * ST Elbe (🇧🇪 Belgium): World War II: Operation Dynamo: The tug was bombed and sunk at Dunkerque by Luftwaffe aircraft.
 *  Ethel Everard (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge was damaged by enemy action and abandoned at Dunkerque or La Panne.
 * Fair Breeze (🇬🇧 United Kingdom): World War II: Operation Dynamo: The drifter struck a submerged wreck in the North Sea at Dunkerque and sank.
 * Foudroyant : World War II: Operation Dynamo: The Adroit-class destroyer was bombed and sunk in the English Channel by Luftwaffe aircraft.
 * Grive (🇬🇧 United Kingdom): World War II: Operation Dynamo: The yacht was bombed and sunk in the North Sea off Dunkerque.
 * HMS Havant (H32) : World War II: Operation Dynamo: The H-class destroyer was bombed and damaged in the English Channel by Junkers Ju 87 aircraft of the Luftwaffe. She was subsequently scuttled by HMS Saltash (J62) . Thirty-three people were killed.
 *  Hertha Johanne (🇩🇪 Germany): The auxiliary schooner sank in the Baltic Sea south of Falster, Sjælland, Denmark.
 * SS Ioanna (🇬🇷 Greece): World War II: Convoy HG 32F: The cargo ship straggled behind the convoy. She was shelled and sunk in the Atlantic Ocean 120 nmi west of Cape Finisterre, Spain by GS U-37 (1938) . All crew were rescued by SS Cabo Razo (🇪🇸 Spain).
 * HMS Keith (D06) : World War II: Operation Dynamo: The B-class destroyer was bombed and sunk in the North Sea off De Panne by Luftwaffe aircraft with the loss of 36 of her 166 crew. The survivors were rescued by MV Hilda (1939) (🇳🇱 Netherlands), HMS Salamander (J86), ST Servia, ST St Abbs and ST Vincia (all 🇬🇧 United Kingdom).
 *  Lady Rosebery (🇬🇧): World War II: Operation Dynamo: The Thames barge struck a mine and sank in the North Sea 3 nmi east of Dunkerque, Nord, France with the loss of one of her crew.
 * FRENCH MINESWEEPER La Mousaillon : World War II: Operation Dynamo: The auxiliary minesweeper was bombed and sunk in the North Sea off Dunkerque by Junkers Ju 87 aircraft of the Luftwaffe.
 *  Lark (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge was beached and abandoned at Dunkerque.
 * HMT Lord Cavan : World War II: Operation Dynamo: The naval trawler was bombed and sunk in the North Sea off Dunkerque by German artillery.
 * HMS Mosquito (T94) : World War II: Operation Dynamo: The Dragonfly-class gunboat was bombed and damaged in the North Sea off Dunkerque by Luftwaffe aircraft. She was scuttled on 3 June by HMS Locust (T28).
 * HMS Orford : World War II: The troopship was bombed and damaged by Luftwaffe aircraft in the Mediterranean Sea off Marseilles, Bouches-du-Rhône, France, whilst evacuating Allied troops and was beached.
 * SS Prague (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and damaged in the North Sea 13 nmi off North Foreland, Kent. She was beached off Sandwich, Kent. She was refloated on 6 June and anchored in The Downs.
 * Renown (🇬🇧 United Kingdom): World War II: Operation Dynamo: The fishing boat struck a mine and sank in the North Sea off the Sandettie Lightship.
 *  Royalty (🇬🇧 United Kingdom): World War II: Operation Dynamo: The Thames barge was beached and abandoned at Malo-les-Bains, Nord.
 * HMS St Abbs (W02) : World War II: Operation Dynamo: The Rescue tug was bombed and sunk in the North Sea off Dunkerque (51.06667°N, 2.45°W) by Luftwaffe aircraft. 19 crewmen and 86 military passengers killed, 30 rescued.
 * HMS St Fagan (W74) : World War II: Operation Dynamo: The Rescue tug was bombed and sunk in the North Sea off Dunkerque by Luftwaffe aircraft. 25 crewmen killed, 7 rescued.
 * Scotia (🇬🇧 United Kingdom): World War II: Operation Dynamo: The passenger ship was bombed and sunk in the North Sea off Dunkerque (51.11667°N, 2.16667°W) by Luftwaffe aircraft with the loss of 28 crew and at least 200 French soldiers.
 * SS Sivert Nielsen (🇳🇴 Norway): World War II: The coaster was bombed and sunk in the Vestfjorden by Luftwaffe aircraft with the loss of one crew member.
 * HMS Skipjack (J38) : World War II: Operation Dynamo: The Halcyon-class minesweeper was bombed and sunk off De Panne by Luftwaffe aircraft with the loss of most of the 275 people on board.
 * SS Slasher (FY1744) (🇬🇧 United Kingdom): World War II: The trawler was bombed and sunk in the North Sea (54.58333°N, 1.26667°W) by Luftwaffe aircraft with the loss of one of her nine crew.
 * HMT St Achilleus : World War II: Operation Dynamo: The naval trawler struck a mine and sank in the North Sea off De Panne.
 * HMT Stella Dorado : World War II: Operation Dynamo: The naval trawler was torpedoed and sunk off Dunkerque by GERMAN TORPEDO BOAT S-34 with the loss of all hands.
 * FRENCH MINESWEEPER Venus : World War II: Operation Dynamo: The auxiliary minesweeper was bombed and sunk in the North Sea at Gravelines, Nord by Junkers Ju 87 aircraft of the Luftwaffe.

2 June

 * Anna Leopold (🇧🇪 Belgium): World War II: Operation Dynamo: The fishing vessel was sunk in the North Sea at Dunkerque by enemy action.
 * HMT Blackburn Rovers (FY 116) : World War II: Operation Dynamo: The naval trawler struck a mine and sank in the North Sea 24 nmi east by south of North Foreland, Kent. Her survivors were ultimately rescued by HMT Saon.
 * SS Chella (🇫🇷 France): The ocean liner was bombed and damaged at Marseilles, Bouches-du-Rhône by Luftwaffe aircraft. She was later shelled and sunk by German artillery.
 * Emma (🇫🇷 France): The trawler collided with SS Hebe (🇫🇮 Finland) in the North Sea off the South Foreland Lighthouse, Kent and sank.
 * SS Florida (1903) (🇵🇦 Panama): The cargo ship ran aground at Cape Spartel, Morocco and was declared a constructive total loss.
 * ST Fossa (🇬🇧 United Kingdom): World War II: Operation Dynamo: The tug ran aground at Dunkerque and was abandoned. She was later salvaged by the Germans and entered service with them.
 * Getuigt vor Christus (🇧🇪 Belgium): World War II: Operation Dynamo: The fishing vessel was sunk in the North Sea at Dunkerque by a German patrol boat.
 * Greynight (🇬🇧 United Kingdom): World War II: The fishing vessel was bombed and sunk in the North Sea (54.66667°N, 1.5°W) by Luftwaffe aircraft with the loss of one of her eight crew.
 * HMHS Paris : World War II: Operation Dynamo: The hospital ship was bombed and severely damaged in the North Sea off Dunkerque (51.18333°N, 2.11667°W) by Luftwaffe aircraft. She was taken under tow but sank the next day. Two crew were killed.
 * Onze Lieve Vrouw van Vlaanderen (🇧🇪 Belgium): World War II: Operation Dynamo: The fishing vessel was sunk in the North Sea at Dunkerque by enemy action.
 * SS Polycarp (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the English Channel 20 nmi south of Land's End, Cornwall (49.31667°N, -5.58333°W) by GS U-101 (1940) . All 43 crew were rescued by SS Espiguette (🇫🇷 France).
 * HMT Westella : World War II: Operation Dynamo: the naval trawler struck a mine in the North Sea whilst rescuing survivors from HMT Blackburn Rovers and sank. The survivors from both boats were rescued by HMT Saon.
 * SS Winga (1924) (🇬🇧 United Kingdom): The cargo ship collided with SS Jernland (1905) (🇳🇴 Norway) in the North Sea 4 nmi off Hartlepool, Co Durham and sank with the loss of fourteen of her 22 crew.

3 June

 * SS Edv. Nissen (🇬🇧 United Kingdom): World War II: Operation Dynamo: The cargo ship was sunk as a blockship at Dunkerque, Nord, France.
 * SS Gourko (🇬🇧 United Kingdom): Operation Dynamo: World War II: The steamer struck a mine and sank in the North Sea off Dunkerque.
 * SS Holland (1919) (🇩🇰 Denmark): World War II: The cargo ship was sunk as a blockship at Dunkerque.
 * Ocean Lassie (🇬🇧 United Kingdom): World War II: The fishing vessel struck a mine and sank in the North Sea off Felixtowe, Suffolk with the loss of six of her nine crew.
 * SS Perrakkis L Cambanis (🇬🇷 Greece): World War II: The cargo ship was bombed and sunk in the English Channel at Dieppe, Seine-Maritime, France. She was later salvaged by the Germans, repaired and entered service as Herta Engeline Fritzen.
 * FRENCH PATROL BOAT Purfina : World War II: The patrol boat struck a mine in the English Channel off Le Havre, Seine-Maritime and sank.
 * SS Snabb (🇫🇮 Finland): World War II: The cargo ship was shelled and sunk in the Atlantic Ocean 300 nmi off Cape Finisterre, Spain by GS U-37 (1938) with the loss of one crew member. The survivors were rescued by SS Kyriakoula (🇬🇷 Greece).
 * SS Westcove (🇬🇧 United Kingdom): World War II: Operation Dynamo: The cargo ship was sunk as a blockship at Dunkerque.

4 June

 * FRENCH MINESWEEPER Emil Deschamps : World War II: Operation Dynamo: The auxiliary minesweeper struck a mine and sank in the North Sea 5 nmi east north east of Foreness Point, Kent, United Kingdom (51.4°N, 1.32333°W) and sank. Survivors were rescued by HMS Albury (J41), FRENCH MINESWEEPER Marie Anne and FRENCH MINESWEEPER Sainte Elisabeth (both ).
 * Marechal Foch (🇫🇷 France): World War II: Operation Dynamo: The trawler collided with HMS Leda (J03) in the North Sea off Dunkerque, Nord and sank. Survivors were rescued by FRENCH TORPEDO BOAT VTB-25.
 * SS Moyle (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as a blockship.
 * SS Pacifico (🇬🇧 United Kingdom): World War II: Operation Dynamo: The cargo ship was scuttled as a blockship at Dunkerque.
 * SS River Humber (🇬🇧 United Kingdom): The cargo ship collided with HMS Folkestone (L22) in the Irish Sea north of Holyhead, Anglesey and sank.

5 June

 * MV Capable (🇬🇧 United Kingdom): World War II: The coaster struck a mine and sank in the English Channel east of the Isle of Wight with the loss of all seven people on board.
 * HMT Lapwing (GY24) (🇬🇧 United Kingdom): World War II: The trawler struck a mine in the North Sea 50 nmi off Flamborough Head, Yorkshire and sank. All nine crew were rescued.
 * GERMAN MINESWEEPER M-11 : World War II: The minesweeper struck a mine off Jæderen, Rogaland, Norway and sank.
 * MV Palime (🇩🇪 Germany): World War II: The cargo ship struck a mine in the North Sea near Stavanger, Rogaland and was beached. She was later declared a constructive total loss.
 * SS Skandia (🇩🇰 Denmark): World War II: The cargo ship struck a mine and sank in the Kattegat (57.55°N, 11.58333°W).
 * SS Stancor (🇬🇧 United Kingdom): The coaster was torpedoed, shelled and sunk in the Atlantic Ocean west of the Outer Hebrides (58.8°N, -8.75°W) by GS U-48 (1938) . Nine of the nineteen crew were rescued by the trawler Kinaldie (🇬🇧 United Kingdom), the rest reached land in their lifeboat.
 * SS Sweep II (🇬🇧 United Kingdom): World War II: The coaster struck a mine and sank in the North Sea east of Harwich, Essex with the loss of two crew.

6 June

 * HMS Carinthia : World War II: The armed merchant cruiser was torpedoed and damaged west of Galway Bay, Ireland (53.21667°N, -10.66667°W) by GS U-46 (1938) with the loss of four crew. She sank the next day.
 * SS Harcalo (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and was beached in the North Sea off Ramsgate, Kent (51.31667°N, 1.53333°W) with the loss of three crew. She was declared a total loss.
 * Lapwing (🇬🇧 United Kingdom): World War II: The trawler struck a mine in the North Sea (54°N, 1.16667°W) and sank. All crew were rescued.
 * GERMAN MINESWEEPER M-11 : World War II: The minesweeper struck a mine and sank off Feistein, Norway.
 * SS Stancor (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and sunk in the Atlantic Ocean north west of the Outer Hebrides by GS U-48 (1938) . Nineteen crew were rescued.

7 June

 * SS Eros (1936) (🇬🇧 United Kingdom): World War II: The cargo ship was torpoedoed and damaged in the Atlantic Ocean 15 nmi off Tory Island, County Donegal, Ireland by GS U-48 (1939) . She was abandoned by her 62 crew, who were rescued by HMT Paynter (FY242) . Eros was taken in tow by HMS Berkeley (L17) and beached on Tory Island. She was later repaired and returned to service.
 * SS Francis Massey (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 15 nmi off Tory Island by GS U-48 (1938) with the loss of 34 of her 35 crew. The survivor was rescued by HMS Volunteer (D71).
 * SS Salome (🇫🇷 France): The tanker sank in the North Sea off Dunkerque, Nord. She was subsequently salvaged by the Germans and entered service as Breisgau.

8 June
For the scuttling of HMS Mashobra on this day, see the entry for 25 May 1940. For the scuttling of RFA Oleander on this day, see the entry for 26 May 1940.
 * HMS Acasta (H09) : World War II: Operation Juno: The A-class destroyer was shelled and sunk in the Norwegian Sea by Gneisenau and Scharnhorst (both ) with the loss of 193 of her 194 crew.
 * HMS Ardent (H41) : World War II: Operation Juno: The A-class destroyer was shelled and sunk in the Norwegian Sea by Gneisenau and Scharnhorst (both ) with the loss of 137 of her 138 crew.
 * HMS Glorious : World War II: Operation Juno: The aircraft carrier was shelled and sunk in the Norwegian Sea by Gneisenau and Scharnhorst (both ) with the loss of 1,207 of her 1,247 crew.
 * SS Hardingham (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in the North Sea north north east of Margate, Kent (51.65°N, 1.66667°W.
 * HMT Juniper  : World War II: Operation Juno: The Tree-class trawler was shelled and sunk in the Norwegian Sea off Jan Mayen, Norway (67.33333°N, 4.16667°W by GERMAN CRUISER Admiral Hipper and four German destroyers. Only four crew survived.
 * MV Oil Pioneer (🇬🇧 United Kingdom): World War II: Operation Juno: The tanker was shelled and sunk in the Norwegian Sea off Jan Mayen (67.33333°N, 4.16667°W) by GERMAN CRUISER Admiral Hipper and four German destroyers with the loss of twenty of her 45 crew.
 * HMS Orama (1924) : World War II: The troopship was shelled and sunk in the Norwegian Sea (67.73333°N, 3.86667°W) by GERMAN CRUISER Admiral Hipper and four German destroyers with the loss of nineteen of her 299 crew.

9 June

 * SS Amythyste (🇫🇷 France): World War II: The cargo ship was scuttled at Dieppe, Seine-Maritime.
 * SS Angiullin ( undefined): World War II: The cargo ship struck a mine off Cape Granitola and sank.
 * Ariadne (🇳🇴 Norway): World War II: The passenger ship was bombed and sunk in the Norwegian Sea (67.91667°N, 2.16667°W) by Luftwaffe aircraft with the loss of nine crew. The survivors were rescued by HMS Arrow (H42).
 * SS Avvenire (1893) ( undefined): World War II: The coaster struck a mine and sank in the Mediterranean Sea off Pantelleria.
 * HNoMS B-3 : World War II: The B-class submarine suffered a battery explosion in Gavlefjord off Alsvåg, Vesterålen and was subsequently scuttled to prevent capture by German forces.
 * HMT Dewey Eve : World War II: The naval trawler was sunk at Scapa Flow in a collision with trawler Gold Crown.
 * SS Dockenhuden (🇩🇪 Germany): The coaster was sunk in the Baltic Sea off Stolpmünde, East Prussia.
 * SS Dulwich (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the English Channel off Villequier, Seine-Maritime, France by Luftwaffe aircraft. She was later salvaged by the Germans and entered service as Holtenau.
 * SS Empire Commerce (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine in the North Sea off Margate, Kent. She was severely damaged and declared a constructive total loss, the first Empire ship lost through enemy action.
 * SS Kong Halfdan (1923) (🇳🇴 Norway): World War II: The cargo ship struck a mine and sank in the Great Belt. Refloated in May 1941, repaired and returned to service in April 1942.
 * FRENCH MINESWEEPER Madeleine Louise : World War II: The auxiliary minesweeper was bombed and sunk at Dunkerque, Nord by Luftwaffe aircraft.
 * SS Margareta (🇫🇮 Finland): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 350 nmi off Cape Finisterre, Spain (44.06667°N, -12.5°W) by GS U-46 (1938) with the loss of five of her 24 crew.
 * Max Wolf (🇬🇷 Greece): World War II: The cargo ship was bombed and damaged in the English Channel off Berville, Seine-Maritime, France by Luftwaffe aircraft and beached at Tancarville. Two of her crew were killed.
 * FRENCH MINESWEEPER Notre Dames des Dunes : World War II: The auxiliary minesweeper was bombed and sunk at Dunkerque, Nord by Luftwaffe aircraft.
 * Prins Olav (🇳🇴 Norway): World War II: The passenger ship was bombed and sunk in the Norwegian Sea (67.91667°N, 2.16667°W) by Luftwaffe aircraft with the loss of one crew member. The survivors were rescued by HMS Arrow (H42).
 * MV Turquoise (1933) (🇧🇪 Belgium): World War II: The cargo ship was scuttled at Dieppe.
 * GERMAN PATROL BOAT V-801 : World War II: The vorpostenboot struck a mine and sank in the Wadden Sea off Ameland, Friesland, Netherlands (53.55°N, 6.03333°W). Survivors were rescued by GERMAN PATROL BOAT V-803

10 June

 * SS Capo Noli ( undefined): World War II: The cargo ship was beached in the St Lawrence River, near Rimouski, Quebec, Canada, by her crew. An attempt to scuttle the ship was foiled by HMCS Bras d'Or (auxiliary minesweeper) She was later salvaged by the Canadians and re-entered service as Bic Island.
 * SS Celina ( undefined): World War II: The cargo ship was scuttled in Algeciras Bay, Gibraltar to prevent capture by British forces.
 * SS Ellavore (1925) (🇳🇴 Norway): World War II: The cargo ship was bombed and damaged in the English Channel off Le Havre by Luftwaffe aircraft. She was beached, but attempts to salvage her were abandoned. All crew survived.
 * SS Gerusalemme ( undefined): World War II: The cargo ship was intercepted off the coast of Natal, South Africa and was beached by her crew.
 * SS Jacobus (🇬🇧 United Kingdom): World War II: The cargo ship was sunk as a blockship at Dieppe, Seine-Maritime, France.
 * SS Kaupo (🇬🇧 United Kingdom): World War II: The tanker was scuttled at Dieppe.
 * Lavoro ( undefined): World War II: The cargo ship was scuttled at Gibraltar to prevent capture by British forces.
 * Libano ( undefined): World War II: The cargo ship was scuttled at Gibraltar to prevent capture by British forces. She was later salvaged by the British, repaired and re-entered service.
 * SS Numbolio ( undefined): World War II: The cargo ship was scuttled in Algeciras Bay, Gibraltar to prevent capture by British forces.
 * Olterra : World War II: The tanker was scuttled at Gibraltar to prevent capture by British forces.
 * SS Pagao ( undefined): World War II: The tanker was scuttled at Rada di Algeceiras.
 * River Ness (🇬🇧 United Kingdom): World War II: The trawler was bombed and sunk in the Irish Sea 8 nmi north east by north of The Skerries, Anglesey by Luftwaffe aircraft.
 * SS River Tyne (🇬🇧 United Kingdom): World War II: The cargo ship was scuttled as a blockship at Dieppe.
 * SS Sverre Sigurdssøn (1923) (🇳🇴 Norway): World War II: The cargo ship struck a mine and sank in Heltefjord (60.6°N, 4.91667°W) with the loss of one crew member.
 * SS Timavo ( undefined): World War II: The cargo ship was intercepted off the coast of Natal and was beached by her crew.
 * SS Umbria (1911) ( undefined): World War II: The passenger cargo vessel was scuttled in the Red Sea (37.32333°N, 19.63667°W, near Port Sudan) to prevent capture by HMS Grimsby (U16) . She was carrying a cargo of 5,000 tons of bombs, which remain in the wreck and pose a risk to Port Sudan, to Eritrea.
 * HMS Vandyck : World War II: Operation Alphabet: The armed boarding vessel was bombed and sunk in the Norwegian Sea off Andenes, Nordland, Norway by Luftwaffe aircraft with the loss of seven of the 168 people on board.

11 June

 * SS Albertville (1928) (🇫🇷 France): World War II: The ocean liner was bombed and sunk in the Havre Roads 1.5 nmi off Octeville-sur-Mer, Seine Maritime by Luftwaffe aircraft.
 * SS Bruges (1920) (🇬🇧 United Kingdom): World War II: The ferry-transport was bombed and damaged at Le Havre, Seine-Maritime, France by Luftwaffe aircraft. She was beached to prevent her sinking.
 * SS General Metzinger (🇫🇷 France): World War II: The ocean liner was bombed and sunk at Le Havre by Luftwaffe aircraft with the loss of six crew.
 * FRENCH MINESWEEPER La Bretonnière : World War II:The auxiliary minesweeper was scuttled at Le Havre.
 * SS Makis (🇬🇷 Greece): World War II: The cargo ship struck a mine and sank in the Mediterranean Sea north of Pantelleria, Italy.
 * SS Marzocco ( undefined): The cargo ship ran aground in the North Sea off Peterhead, Aberdeenshire, United Kingdom and broke in two.
 * SS Mount Hymettus (🇬🇷 Greece): World War II: The cargo ship was torpedoed, shelled and sunk in the Atlantic Ocean west of Cape Finisterre, Spain (42.2°N, -11.33333°W) by GS U-101 (1940) . All 24 crew survived.
 * SS Niobe (🇫🇷 France): World War II: The cargo ship was bombed and sunk in the English Channel off Le Havre by Luftwaffe aircraft.
 * FRENCH PATROL VESSEL Patrice II : World War II: The auxiliary patrol vessel was shelled and sunk in the English Channel off Fécamp, Seine-Maritime by German artillery.
 * MV Piriapolis (🇧🇪 Belgium): World War II: The cargo ship was bombed and sunk off Le Havre by Luftwaffe aircraft.
 * Polinice ( undefined): World War II: The cargo ship was scuttled at Malta following seizure by the British the previous day.
 * SS Saint Ronaig (🇬🇧 United Kingdom): World War II: The coaster struck a mine and sank in the English Channel at Seaford, East Sussex with the loss of four of her eight crew. The wreck was dispersed in July 1950 by HMS Flatholm (DV9) (.
 * SS Syrie (🇫🇷 France): World War II: The cargo ship was bombed and sunk in the English Channel off Le Havre by Luftwaffe aircraft.
 * Timavo ( undefined): World War II: The cargo liner was deliberately run aground and wrecked north east of Durban, South Africa whilst under attack by South African Air Force aircraft.
 * SS Violando N Goulandris (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west north west of Cape Finisterre, Spain (44.06667°N, -12.5°W by GS U-48 (1939) with the loss of six of her 28 crew.
 * SS Zinovia (🇬🇷 Greece): World War II: The cargo ship struck a mine and sank in the Mediterranea Sea north of Pantelleria.

12 June

 * SS Barbara Marie (🇬🇧 United Kingdom): World War II: Convoy SL 34: The cargo ship was torpedoed and sunk in the Atlantic Ocean (44.26667°N, -13.9°W) by GS U-46 (1938) with the loss of 32 of her 37 crew. The survivors were rescued by HMS Leith (U36)  and MV Swedru (🇬🇧 United Kingdom).
 * SS Baron Saltoun (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in the English Channel off Cherbourg, Manche, France.
 * HMS Calypso (D61) : World War II: The C-class cruiser was torpedoed and sunk in the Mediterranean Sea, south of Crete (33.75°N, 24.38333°W) by Alpino Attilio Bagnolini with the loss of 39 of her 344 crew.
 * FRENCH SLOOP Cerons : World War II: The auxiliary sloop was shelled and sunk in the English Channel between Fécamp and Veules-les-Roses, Seine-Maritime by German artillery.
 * SS Earlspark (🇬🇧 United Kingdom): World War II: Convoy OG 33F: The cargo ship was torpedoed and sunk in the Atlantic Ocean (42.43333°N, -11.55°W) by GS U-101 (1940) with the loss of seven of her 38 crew. Survivors were rescued by HMS Enchantress (L56).
 * FRENCH PATROL VESSEL Etienne Rimbert : World War II: The auxiliary patrol vessel was scuttled at Dieppe, Seine-Maritime.
 * ITALIAN GUNBOAT Giovanni Berta : World War II: The gunboat was sunk in the Mediterranean Sea off Tobruk, Libya by HMS Gloucester (62), HMS Liverpool (C11) and aircraft based on HMS Eagle (1918) (all ).
 * FRENCH MINESWEEPER Granville : World War II: The auxiliary minesweeper was shelled and sunk in the English Channel between Fécamp and Saint-Valery-en-Caux, Seine Maritime by German artillery.
 * SS Himalaya (1883) (🇬🇧 United Kingdom): World War II: The collier was bombed and sunk at Weymouth, Dorset by a Junkers Ju 88 aircraft of the Luftwaffe.
 * SS Innisulva (🇬🇧 United Kingdom): World War II: The coaster was beached and abandoned in the River Seine in Paris with the loss of four of her five crew. She was subsequently salvaged by the Germans and re-entered service under that name.
 * MV Orkanger (1928) (🇳🇴 Norway): World War II: The tanker was torpedoed and sunk in the Mediterranean Sea off Alexandria, Egypt (31.7°N, 28.83333°W) by ITALIAN SUBMARINE Naiade and ITALIAN SUBMARINE Nereide (both ) with the loss of five of the 39 people on board.
 * MV Prinses Juliana (1929) (🇳🇱 Netherlands): World War II: The coaster struck a mine and sank in Poole Bay, Dorset, United Kingdom with the loss of two crew.
 * MV Romolo (1926) ( undefined): World War II: The cargo liner was intercepted in the Pacific Ocean near the Solomon Islands by HMAS Manoora and was scuttled.
 * HMT Sisapon : World War II: The naval trawler struck a mine and sank in the North Sea off Felixtowe, Suffolk with the loss of eleven crew.
 * SS Swallow (1928) (🇬🇧 United Kingdom): World War II: The coaster was beached and abandoned in the River Seine in Paris. All six crew survived. She was subsequently salvaged by the Germans and re-entered service as Schwalbe.
 * SS Train Ferry No.6 (🇬🇧 United Kingdom): World War II: The train ferry was shelled and damaged in the English Channel at Saint-Valery-en-Caux by German artillery. She was beached and abandoned.
 * MV Twente (🇳🇱 Netherlands): World War II: The tug struck a mine in the North Sea and sank.
 * MV Willowbank (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 220 nmi north west of Cape Finisterre, Spain (44.26667°N, -13.9°W) by GS U-46 (1938) . All 51 crew were rescued by MV Swedru (🇬🇧 United Kingdom).
 * SS Yvonne (1899) (🇧🇪 Belgium): World War II: The coaster struck a mine and sank 2 nmi north of the Goodwin Knoll Buoy, off the coast of Kent, United Kingdom with the loss of ten of her twelve crew.

13 June

 * MV Abel Tasman (🇳🇱 Netherlands): World War II: The coaster struck a mine at the entrance to Poole Harbour, Dorset and sank with the loss of all on board.
 * SS British Inventor (🇬🇧 United Kingdom): The tanker struck a mine in Poole Bay, Dorset and was beached. The ship broke in two on 30 July and the bow section sank. The stern section was salvaged, repaired and returned to service.
 * SS British Petrol (🇬🇧 United Kingdom): The tanker was captured in the Atlantic Ocean 1000 nmi off Trinidad (20.16667°N, -46.93333°W) by GERMAN AUXILIARY CRUISER Widder with the loss of two of her 46 crew. The 44 survivors were taken as prisoners of war. She was scuttled the next day at (18°N, -54.5°W).
 * Caroline Susan (🇬🇧 United Kingdom): The motor yacht struck a mine and sank in the English Channel south of Bournemouth, Hampshire.
 * FRENCH MINESWEEPER Marthe Roland : World War II: The auxiliary minesweeper was scuttled at Dieppe, Seine-Maritime.
 * HMT Ocean Sunlight : World War II: The naval trawler struck a mine in the English Channel off Seaford, East Sussex and sank with the loss of eight crew.
 * HMS Odin (N84) : World War II: The Odin-class submarine was depth charged in the Gulf of Taranto, off Crotone, Calabria, Italy by Strale . She surfaced and was rammed by Baleno ( and sunk with the loss of 56 crew.
 * FRENCH HARBOUR DEFENCE VESSEL Reines des Flots : World War II: The harbour defence vessel was scuttled at Dieppe.
 * HMS Scotstoun : World War II: The armed merchant cruiser was torpedoed and sunk in the Atlantic Ocean west of Barra, Outer Hebrides (57°N, -9.95°W) by GS U-25 (1936) with the loss of six of her 352 crew. The survivors were rescued by HMS Highlander (H44).

14 June

 * SS Antonis Georgandis (🇬🇷 Greece): World War II: The cargo ship was shelled in the Atlantic Ocean off Cape Finisterre, Spain (42.75°N, -16.33333°W) by GS U-101 (1940) and sunk with the loss of all hands.
 * SS Balmoralwood (🇬🇧 United Kingdom): World War II: Convoy HX 48: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (50.31667°N, -10.46667°W) by GS U-47 (1938) . All 41 crew were rescued by SS Germaine (🇬🇷 Greece).
 * SS Martis (🇬🇧 United Kingdom): World War II: The cargo ship was scuttled at Scapa Flow, Orkney Islands.
 * SS Mount Myrto (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Celtic Sea (50.05°N, -10.08333°W) by GS U-38 (1938) with the loss of four crew.
 * HMT Myrtle : World War II: The naval trawler struck a mine and sank in the North Sea off the north coast of Kent with the loss of all 21 crew.

15 June

 * HMS Andania (1922) : World War II: The armed merchant cruiser was torpedoed and sunk in the Atlantic Ocean off Reykjavík, Iceland (62.6°N, -15.15°W) by GS U-A (. All 347 crew were rescued by the trawler Skallagrimur (Light Blue Flag of Iceland.svg Iceland).
 * SS Erik Boye (🇩🇰 Denmark): World War II: Convoy HX 47: The cargo ship was torpedoed and sunk in the Celtic Sea (50.61667°N, -8.73333°W) by GS U-38 (1938) . All crew were rescued by HMS Fowey (L15).
 * MV Italia (1939) (🇳🇴 Norway): World War II: Convoy HX 47: The cargo ship was torpedoed and sunk in the Atlantic Ocean south of Ireland (50.61667°N, -8.73333°W) by GS U-38 (1938) with the loss of nineteen of her 35 crew. The survivors were rescued by HMS Fowey (L15).
 * Macallé : The Adua-class submarine ran aground in the Red Sea (19°N, 38°W). All crew were rescued by ITALIAN SUBMARINE Guglielmotti . The submarine was shelled on 27 June by HMS Kandahar (F28), HMS Kingston (F64) and HMNZS Leander . Aircraft from HMNZS Leander also bombed the beached submarine.
 * Morse : World War II: The Requin-class submarine struck a mine and sank in the Mediterranean Sea off Kerkennah, Tunisia with the loss of all hands.

16 June
(all ) with the loss of all 59 crew.
 * RMS Andania (1922) (🇬🇧 United Kingdom): World War II: The ocean liner was torpedoed and sunk in the Atlantic Ocean 70 nmi off Reykjavík, Iceland by GS U-A . All crew were rescued.
 * HMS Grampus (N56) : World War II: The Grampus-class submarine was torpedoed and sunk in the Mediterranean Sea east of Sicily, Italy by Circe, Clio, Calliope, and Polluce
 * SS La Coubre (🇫🇷 France): World War II: The dredger struck a mine and sank in the Bay of Biscay off Saint-Nazaire, Loire-Atlantique with the loss of three of her crew.
 * James Stove (🇳🇴 Norway): World War II: The tanker was torpedoed and sunk in the Red Sea 12 nmi south of Aden (12.58333°N, 45.05°W) by Galileo Galilei . All 34 crew were rescued by HMT Moonstone.
 * Köningsberg (🇩🇪 Germany): World War II: The cargo ship was intercepted in the Atlantic Ocean off Vigo, Galicia, Spain (41.6°N, -10.61667°W) by FRENCH PATROL BOAT President Houduce and was scuttled.
 * SS Rastrello ( undefined): World War II: The cargo ship was sunk by an explosion at Naples, Campania.
 * Samland : World War II: Operation Juno: The tanker was torpedoed and sunk in the North Sea 5 nmi off Lista, Vest-Agder, Norway (58.3°N, 5.66667°W) by HMS Tetrarch.
 * MV Wellington Star (🇬🇧 United Kingdom: World War II: The cargo liner was torpedoed and sunk in the Atlantic Ocean off Cape Finisterre (42.65°N, -17.01667°W) by GS U-101 (1940) . Fifty-two of her 69 crew were rescued by SS Pierre L D (🇫🇷 France), the remainder reached land in their lifeboat.

17 June

 * ST Athlete (🇬🇧 United Kingdom): World War II: The tug was scuttled at Brest, Finistère.
 * SS Capitaine Maurice Eugene (🇫🇷 France): World War II: The cargo ship was scuttled at Brest.
 * SS Champlain (🇫🇷 France): World War II: The ocean liner struck a mine in the Bay of Biscay off La Pallice and sank with the loss of eleven or twelve of the 370 people on board. She was torpedoed on 21 June by GS U-65 (1940).
 * SS Elpis (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of Cape Finisterre, Spain (43.76667°N, -14.1°W) by GS U-46 (1938) . All 28 crew were rescued.
 * SS Komet (1912) (🇳🇴 Norway): World War II: The cargo ship was bombed and sunk in the English Channel 25 nmi off Caen, Calvados, France by Luftwaffe aircraft with the loss of two of her sixteen crew. Survivors were rescued by a French trawler.
 * HMS Lancastria : World War II: Operation Ariel: The troopship was bombed and sunk off Saint-Nazaire, Loire-Atlantique, France by Junkers Ju 88 aircraft of II Gruppe, KG30 with the loss of 2,899 of the 5,310 people on board. The survivors were rescued by HMT Cambridgeshire and HMS Highlander (H44) (both ), as well as SS Cymbula, SS Fabian, SS Glenaffaric, SS John Holt, SS Oronsay, SS Robert L Holt and SS Ulster Prince (all 🇬🇧 United Kingdom).
 * ST Lutteur (🇫🇷 France): World War II: The tug was scuttled at Brest.
 * HMT Murmansk : World War II: The naval trawler ran aground at Brest and was abandoned without loss. She was later salvaged by the Germans and entered service as KFK-76, changed to "FB-06" later.
 * Provana : World War II: The Marcello-class submarine was rammed and sunk in the Mediterranean Sea off Oran, Algeria by La Curieuse.
 * FRENCH MINESWEEPER Inginieur Riebell : World War II: The auxiliary minesweeper was scuttled at Brest. She was subsequently salvaged by the Germans and use as an armed costal vessel.
 * FRENCH MINESWEEPER Roche Noire : World War II: The auxiliary minesweeper was scuttled at Brest.
 * SS Teiresias (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and damaged in the Bay of Biscay off Noimoutier, Vendée, France (47.11667°N, -2.38333°W) by Luftwaffe aircraft. She was beached and abandoned off Saint-Nazaire The survivors were rescued by SS Holmside (🇬🇧 United Kingdom).

18 June

 * Achille : World War II: The Redoutable-class submarine was scuttled in a drydock at Brest, Finistère.
 * Agosta : World War II: The Agosta-class submarine was scuttled in a drydock at Brest.
 * FRENCH MINELAYER Alexis de Tocqueville : World War II: The auxiliary minesweeper was scuttled at Brest.
 * SS Altair (1923) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and damaged in the Atlantic Ocean south west of Cornwall, United Kingdom (49.65°N, -11.25°W) by GS U-32 (1937) ( and sank. All eighteen crew were rescued by the trawler Iparreko-Izarra (🇪🇸 Spain). Altair was subsequently scuttled two days later by HMS Prunella (X02) at 49.6°N, -11.36667°W.
 * FRENCH BATTLESHIP Clemenceau : World War II: The uncompleted was scuttled at Brest.
 * Cyclone : World War II: The Bourrasque-class destroyer was torpedoed and damaged by German motor torpedo boat S-24 at Brest and was subsequently scuttled.
 * SS Dido (1920) (🇬🇧 United Kingdom): World War II: The cargo ship was damaged and abandoned at Brest. She was subsequently salvaged by the Germans and re-entered service as Dorpat.
 * SS Dordogne (🇫🇷 France): World War II: The tanker was scuttled at Brest.
 * Enseigne Henry : World War II: The Dubourdieu-class gunboat was scuttled at Lorient, Morbihan to prevent capture by German forces.
 * Etourdi : World War II: The Ardent-class gunboat was scuttled at Brest to prevent capture by German forces.
 * FRENCH MINESWEEPER Gaulois : World War II: The auxiliary minesweeper was scuttled at Saint-Servan, Ille-et-Vilaine.
 * FRENCH TUG Goury : World War II: The naval tug was scuttled at Cherbourg, Manche.
 * SS Hester (🇬🇧 United Kingdom): World War II: The cargo ship was scuttled at Rochefort, Charente-Maritime. She was later salvaged by the Germans and re-entered service under that name.
 * SS Jacob Christensen (1920) (🇳🇴 Norway: World War II: The cargo ship was scuttled at Rochefort. She was later salvaged by the Germans and re-entered service as Baldur.
 * FRENCH MINESWEEPER Kergroise : World War II: The auxiliary minesweeper was scuttled at Lorient.
 * FRENCH TUG La Valette : World War II: The naval tug was scuttled at Lorient.
 * GERMAN MINESWEEPER M-5 : World War II: The auxiliary minesweeper struck a mine and sank in the North Sea (63.5°N, 8.2°W).
 * FRENCH MINESWEEPER Marquitta : World War II: The auxiliary minesweeper was scuttled at Cherbourg.
 * FRENCH PATROL VESSEL Mouette : World War II: The auxiliary patrol vessel was scuttled at Brest.
 * RMS Niagara (🇬🇧 United Kingdom): World War II: The cargo liner struck a mine and sank in the Hauraki Gulf off Cape Brett, North Island, New Zealand (-35.58333°N, 17.9°W). All 254 people on board were rescued by HMNZS Achilles (70).
 * Nuevo-Ons (🇪🇸 Spain): World War II: The trawler was shelled and sunk in the Atlantic Ocean south west of Land's End, Cornwall, United Kingdom (49.65°N, -11°W) by GS U-32 (1937) with the loss of six of her thirteen crew. Survivors were rescued by the trawler Iparreko-Izarra (🇪🇸 Spain.
 * FRENCH TANKER Ondine : World War II: The water carrier was scuttled at Lorient.
 * Ouessant : World War II: The Agosta-class submarine was scuttled at Brest to prevent capture by German forces.
 * Pasteur : World War II: The Redoutable-class submarine was scuttled at Brest to prevent capture by German forces.
 * FRENCH MINESWEEPER Pluvoise : World War II: The auxiliary minesweeper was scuttled at Lorient.
 * SS Reno (1904) ( undefined): World War II: The cargo ship struck a mine and sank in the Adriatic Sea 11 nmi off Arcona.
 * SS Ronwyn (🇬🇧 United Kingdom: World War II: The cargo ship was scuttled at Rochefort. She was later salvaged by the Germans and re-entered service as Hochheimer.
 * Sálvora (🇪🇸 Spain): World War II: The trawler was shelled and sunk in the Atlantic Ocean south west of Land's End (49.65°N, -11°W) by GS U-32 (1937) . All twelve crew were rescued by the trawler Iparreko-Izarra (🇪🇸 Spain).
 * SS Sarmatia (🇫🇮 Finland): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Land's End (49.15°N, -12.08333°W) by GS U-28 (1936) . All 23 crew were rescued by the trawlers Felix and Pastor Montenegro (both 🇪🇸 Spain}).
 * SS Sonja (1923) (🇸🇪 Sweden): World War II: The cargo ship struck a mine and sank in the North Sea at 63.5°N, 8.2°W with the loss of twelve of her 21 crew. The survivors were rescued by SS Inger (1920) (🇳🇴 Norway).
 * Vauquois : World War II: The Arras-class gunboat struck a mine off Le Conquet, Finistère and was damaged. She was subsequently scuttled.

19 June

 * SS Adamandios Georgandis (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland (49.58333°N, -11.25°W) by U-28 with the loss of one crewmember. Ireland sought an explanation from Germany.
 * SS Baron Loundoun (🇬🇧 United Kingdom): World War II: Convoy HGF 34: The cargo ship was torpedoed and sunk in the Atlantic Ocean west north west of Cape Ortegal, Portugal (45°N, -11.35°W) by GS U-48 (1939) with the loss of three of her 33 crew. Survivors were rescued by HMS Scarborough (L25).
 * SS British Monarch (🇬🇧 United Kingdom): The cargo ship was torpedoed and sunk in the Atlantic Ocean (45°N, -11.35°W) by GS U-48 (1939) with the loss of all 40 crew.
 * SS Brumaire (🇫🇷 France): World War II: The tanker was torpedoed and damaged in the Bay of Biscay by GS U-25 (1936) . She was bombed and sunk the next day at 47.23333°N, -3.26667°W by Luftwaffe aircraft.
 * SS Labud ( undefined): World War II: The cargo ship was torpedoed, shelled, and sunk in the Atlantic Ocean south west of the Fastnet Rock by GS U-32 (1937) . All 34 crew were rescued.
 * La Tanche (🇫🇷 France): World War II: The trawler struck a mine and sank in the Bay of Biscay off Lorient, Morbihan.
 * Le Martinique : World War II: The Redoutable-class submarine was scuttled at Cherbourg, Seine-Maritime to prevent capture by German forces.
 * GERMAN MINESWEEPER M-1802 : World War II: The auxiliary minesweeper struck a mine and sank in the North Sea north west of Heligoland.
 * Mexique : World War II: The armed merchant cruiser struck a mine and sank in the Bay of Biscay off Le Verdon-sur-Mer, Gironde. All crew were rescued.
 * RMS Niagara (🇬🇧 United Kingdom): World War II: The ocean liner struck a mine and sank in the Pacific Ocean off Bream Head, New Zealand.
 * HMS Orpheus (N46) : World War II: The Odin-class submarine was sunk in the Mediterranean Sea north of Tobruk, Libya by Turbine with the loss of all 55 crew.
 * Roland Morillot : World War II: The Redoutable-class submarine was scuttled at Cherbourg to prevent capture by German forces.
 * SS Roseburn (🇬🇧 United Kingdom): World War II: The cargo ship was shelled and torpedoed in the English Channel 5 nmi off Dungeness, Kent by German motor torpedo boats S-19 and S-26 (both ). She was beached but declared a total loss. All crew were rescued by the drifter Lord Howe (🇬🇧 United Kingdom).
 * SS The Monarch (🇬🇧 United Kingdom): World War II: The coaster was torpedoed and sunk in the Bay of Biscay off Point Penmarc'h, Finistère, France (47.33333°N, -4.66667°W) by GS U-52 (1939) with the loss of all twelve crew.
 * MV Tudor (1930) (🇳🇴 Norway): World War II: Convoy HGF 34: The cargo ship was torpedoed and sunk in the Atlantic Ocean north west of Cape Finisterre, Spain (45.16667°N, -11.83333°W) by GS U-48 (1939) with the loss of one of her 39 crew. The survivors were rescued by HMS Arabis (K73) and HMS Calendula (K28) (both ).
 * SS Ville de Namur (🇧🇪 Belgium): World War II: The passenger ship was torpedoed and sunk in the Bay of Biscay (46.41667°N, -4.58333°W) by GS U-52 (1939) with the loss of 25 of her 79 crew.

20 June

 * SS Adamantinos (🇬🇷 Greece): World War II: The cargo ship was bombed and sunk in the English Channel off La Rochelle, Charente-Maritime, France by Luftwaffe aircraft. She was later salvaged by the Germans and seized as a prize of war.
 * Diamante : World War II: The submarine was torpedoed and sunk in the Mediterranean Sea off Tobruk, Libya (32.7°N, 23.81667°W) by HMS Parthian (N75).
 * SS Empire Conveyor (🇬🇧): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off Barra Head (58.26667°N, -8.16667°W) by GS U-122 (1939) with the loss of three of her 41 crew. The survivors were rescued by HMS Campbell (D60).
 * SS Foucauld (🇫🇷 France): World War II: The passenger ship was bombed and sunk in the Bay of Biscay off La Pallice, Charente-Maritime by Luftwaffe aircraft.
 * SS Frances Massey (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off County Donegal, Ireland by GS U-48 (1939) with the loss of all 34 crew.
 * SS François Foucault (🇫🇷 France): World War II: The passenger ship was sunk by enemy action in the Bay of Biscay.
 * SS James McGee (🇵🇦 Panama): World War II: The tanker struck a mine and sank in the Bristol Channel, United Kingdom. All crew were rescued by HMS Wolverine (D78).
 * MV Moordrecht (🇬🇧 United Kingdom): World War II: Convoy HX 49: The tanker straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean off Portugal (43.56667°N, -14.33333°W) by GS U-48 (1939) with the loss of 25 of her 29 crew. Survivors were rescued by SS Orion (1909) (🇬🇷 Greece).
 * HNLMS O 13 : World War II: The O 12-class submarine collided with ORP Wilk in the North Sea (56.83333°N, 3.95°W and sank with the loss of all hands.
 * SS Otterpool (🇬🇧 United Kingdom): World War II: Convoy HG 34F: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Land's End, Cornwall (48.75°N, -8.21667°W) by GS U-30 (1936) with the loss of 23 of her 38 crew. The survivors were rescued by HMS Scarborough (L25).
 * SS Stesso (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk at Cardiff, Glamorgan by Luftwaffe aircraft. She was later refloated, and departed on 31 December for scrapping at Briton Ferry.
 * SS Tilia Gorthon (🇸🇪 Sweden): World War II: The cargo ship was torpedoed and sunk in the English Channel south of Land's End (48.53333°N, -6.33333°W) by GS U-38 (1938) ( with the loss of ten of her 21 crew. The survivors were rescued by HMS Leith (U36).

21 June

 * SS Alfa (1921) (🇩🇰 Denmark): World War II: The coaster was torpedoed and sunk in the North Sea off Texel, North Holland, Netherlands by HMS H44.
 * SS Berenice (🇳🇱 Netherlands): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (47.16667°N, -3.58333°W) by GS U-65 (1940) with the loss of 39 of the 47 people on board.
 * SS Biscarosse (🇫🇷 France): World War II: The cargo ship was scuttled at Le Havre, Seine Maritime.
 * HMS Cape Howe (X02) : World War II: The Q-ship, disguised as Royal Fleet Auxiliary vessel Prunella, was torpedoed and sunk in the Celtic Sea (49.75°N, -8.78333°W) by GS U-28 (1936)  with the loss of 55 of her 95 crew. The survivors were rescued by SS Casamance (🇫🇷 France) and HMS Versatile (D32).
 * HMT Charde : The naval trawler sank in Portsmouth Harbour.
 * SS Hilda (1915) (🇫🇮 Finland): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (45.76667°N, -3.28333°W) by GS U-52 (1939) with the loss of five of her sixteen crew.
 * SS Luffworth (🇬🇧 United Kingdom): World War II: The coaster was abandoned at Brest, Finistère. She was later seized by the Germans as a prize of war.
 * SS Luxembourg (🇧🇪 Belgium): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (47.41667°N, -4.91667°W) by GS U-38 (1937) with the loss of five of her 46 crew.
 * SS Mecanicien Principal Carvin (🇫🇷 France): World War II: The cargo ship was bombed and sunk in the Bay of Biscay off Le Verdon-sur-Mer, Gironde.
 * FRENCH PATROL VESSEL Mercedita : World War II: The auxiliary patrol vessel struck a mine of Le Verdon-sur-Mer and was beached.
 * GERMAN TORPEDO BOAT S-21 : World War II: The schnellboot struck a mine and sank in the English Channel west of Cap Gris Nez, Pas-de-Calais, France. She was salvaged in 1941 and returned to service.
 * GERMAN TORPEDO BOAT S-32 : World War II: The schnellboot struck a mine and sank in the English Channel west of Cap Gris Nez.
 * SS San Fernando (🇬🇧 United Kingdom): World War II: Convoy HX 49: The tanker was torpedoed and damaged in the Celtic Sea (50.33333°N, -10.4°W) by GS U-47 (1938) . She was taken in tow but sank the next day. All 49 crew were rescued by HMS Fowey (L15) and HMS Sandwich (L12) (both ).
 * HNLMS Vliereede : World War II: The captured ex-Dutch coastal defence ship was bombed and sunk at Den Helder, North Holland by Lockheed Hudson aircraft of 206 Squadron, Royal Air Force. She was later salvaged by the Germans and re-entered service as Anti-Aircraft battery ship Ariadne.
 * SS Yarraville (🇬🇧 United Kingdom): World War II: Convoy 65 X: The tanker was torpedoed and sunk in the Atlantic Ocean south west of Figueira da Foz, Coimbra, Portugal (39.66667°N, -11.56667°W) by GS U-43 (1939) with the loss of five of her 50 crew. The survivors were rescued by the trawler Marie Gilberte (🇫🇷 France).

22 June

 * SS Amienois (🇫🇷 France): World War II: The cargo ship was bombed and sunk at Le Verdon-sur-Mer, Gironde by Luftwaffe aircraft.
 * HMY Campeador V : World War II: The naval yacht struck a mine and sank in the English Channel off Bembridge, Isle of Wight with the loss of nineteen of her 21 crew.
 * MV Crux (1923) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (36.86667°N, -14°W) by GS U-A . All 30 crew were rescued by SS Brutus (🇬🇧 United Kingdom).
 * Elgo (🇸🇪 Sweden): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea north of Sfax, Tunisia by Pier Capponi with the loss of one crewmember.
 * SS Eli Knudsen (🇳🇴 Norway): World War II: Convoy HX 49: The tanker was torpedoed and damaged in the Atlantic Ocean (50.6°N, -8.73333°W) by GS U-32 (1937) . All 42 crew were rescued by HMT Agate (1933) and HMS Sandwich (L12) (both ). She was taken in tow the next day but sank at 50.6°N, -7.85°W.
 * La Bastiase : World War II: The Flower-class corvette struck a mine in the North Sea off Hartlepool, Co Durham, United Kingdom and sank with the loss of a number of the people on board.
 * Le Fier : World War II: The Le Fier-class destroyer struck a mine and sank in the Bay of Biscay off Oléron, Charente-Maritime.
 * L'Entreprenant : World War II: The Le Fier-class destroyer was scuttled in the Gironde Estuary.
 * SS Monique (🇫🇷 France): World War II: The tanker was torpedoed and sunk in the Bay of Biscay by GS U-65 (1940) with the loss of all hands.
 * SS Neion (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (47.15°N, -4.28333°W) by GS U-38 (1938) with the loss of one crew member.
 * MV Randsfjord (🇳🇴 Norway): World War II: Convoy HX 49: The cargo ship was torpedoed and sunk in the Atlantic Ocean 70 nmi south south east of Queenstown, County Cork, Ireland by GS U-30 (1936) with the loss of four of her 33 crew. Survivors were rescued by SS Port Hobart (🇬🇧 United Kingdom).
 * GS U-122 (1939) : World War II: The Type IXB submarine disappeared in the North Sea on or after this date with the loss of all 56 crew.

23 June

 * ST Coringa (🇬🇧 United Kingdom): The tug sank in the Atlantic Ocean.
 * Emeraude : World War II: The Emeraude  class submarine was scuttled at Toulouse.
 * HMS Khartoum (F45) : World War II: The K-class destroyer suffered severe damage from explosion of her own torpedoes in their tubes and was beached in the Red Sea off Perim, South Yemen (12.63333°N, 43.4°W) and subsequently sank.
 * MV Kufra (🇬🇧 United Kingdom): The cargo ship collided with another vessel and sank in the Bay of Biscay off Royan, Charente-Maritime, France.
 * Le Cherbourgeoise : World War II: The Patrol Boat was scuttled at Le Verdon.
 * HMIS Pathan : The PC-class patrol boat was severely damaged by the explosion of her own depth charges in the Indian Ocean off Bombay. She sank the next day at 18.93333°N, 72.75°W. Seven of her crew were killed.
 * Torricelli : World War II: The submarine was shelled and sunk in the Red Sea off Perim (12.56667°N, 43.26667°W) by HMS Kandahar (F28), HMS Kingston (F64), HMS Khartoum (F45), HMS Shoreham (L32) (all ) and . Survivors were rescued by HMS Kandahar and HMS Kingston.

24 June

 * SS Albuera (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and sunk in the English Channel off Hastings, East Sussex by German motor torpedo boat S-36 with the loss of seven of her 36 crew. The survivors were rescued by SS Merope (🇳🇱 Netherlands).
 * SS Cathrine (🇵🇦 Panama): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland (50.13333°N, -14°W) by GS U-47 (1938). All nineteen crew were rescued.
 * Galvani : World War II: The Brin-class submarine was rammed and sunk in the Gulf of Oman (25.91667°N, 56.91667°W) by HMS Falmouth.
 *  Gamma (🇩🇰 Denmark): The auxiliary schooner sank off Sjælland.
 * MV Kingfisher (🇬🇧 United Kingdom): World War II: The coaster was torpedoed and sunk in the English Channel south of Beachy Head, East Sussex (50.5°N, 0.46667°W) by German motor torpedo boat S-19 with the loss of one crewmember.

25 June

 * HMCS Fraser : World War II: Operation Ariel: The C-class destroyer was accidentally rammed and sunk in the Gironde Estuary off Bordeaux, France (45.73333°N, -1.56667°W) by HMS Calcutta (1918) with the loss of 45 of her 145 crew. HMS Calcutta and HMCS Restigouche (H00)  rescued the survivors.
 * FRENCH PATROL VESSEL Saint Marguerite : World War II: The auxiliary patrol vessel was scuttled at Le Verdon-sur-Mer, Gironde.
 * SS Saranac (🇬🇧 United Kingdom): World War II: Convoy OA 172: The tanker was torpedoed and sunk in the Atlantic Ocean (48.4°N, -15.08333°W) by GS U-51 (1938) with the loss of four of her 44 crew. The survivors were rescued by SS Ainderby (🇬🇧 United Kingdom) and HMS Hurricane (H06).
 * GERMAN PATROL BOAT V1107 : World War II: The vorpostenboot was torpedoed and sunk in the Norwegian Sea south of Stavanger, Rogaland, Norway (58.9°N, 5.08333°W) by HMS Snapper (39S).
 * SS Windsorwood (🇬🇧 United Kingdom): World War II: Convoy OA 172: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland (48.51667°N, -14.83333°W) by GS U-51 (1938) . All 40 crew were rescued by SS Ainderby (🇬🇧 United Kingdom).

26 June

 * SS Alessandro Podesta ( undefined): World War II: The cargo ship struck a mine in the Mediterranean Sea off the north coast of Sardinia and sank.
 * Castleton (🇬🇧 United Kingdom): The trawler was torpedoed and sunk in the Atlantic Ocean west of the Orkney Islands by GS U-62 (1939) with the loss of ten crew.
 * SS Cruz (🇳🇴 Norway: World War II: Convoy OG 34: The cargo ship was torpedoed and sunk in the Atlantic Ocean (36.88333°N, -14°W by GS U-A . All crew were rescued.
 * SS Cygnus (🇩🇪 Germany): The cargo ship was torpedoed and sunk west of Hådyret, Norway (58.21667°N, 5.1°W) by HMS Snapper (39S).
 * SS Dimitris (🇬🇷 Greece): World War II: The cargo ship was captured in the Bay of Biscay (44.38333°N, -11.68333°W) by GS U-29 (1936) and was scuttled by gunfire. All crew were rescued.
 * MV Loasso ( undefined): World War II: The cargo ship struck a mine and sank in the Adriatic Sea 3 nmi off Mattinata, Apulia.

27 June

 * Console Generale Liuzzi : World War II: The Liuzzi-class submarine was depth charged and damaged in the Mediterranean Sea south of Crete (33.6°N, 27.45°W) by HMS Dainty (H53), HMS Decoy (H75), Defender, HMS Ilex (D61) (all ) and HMAS Voyager (D31) and was subsequently scuttled.
 * SS Köln (1922) (🇩🇪 Germany): The cargo ship ran aground south of Gävle, Sweden and broke in two.
 * MV Lenda (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 160 nmi south west of the Fastnet Rock (50°N, -13.4°W) by GS U-47 (1938) with the loss of one of her 26 crew. The survivors were rescued by HMS Havelock (H88) and HMS Hurricane (H06) (both ).
 * SS Leticia (🇳🇱 Netherlands): World War II: The tanker was shelled and sunk in the Atlantic Ocean 160 nmi south west of the Fastnet Rock (50.18333°N, -13.25°W) by GS U-47 (1938)) ) with the loss of two of her 30 crew. The survivors were rescued by HMS Hurricane (H06).
 * HMS Orpheus (N46) : World War II: The Odin-class submarine was depth charged and sunk in the Mediterranean Sea by ITALIAN DESTROYER Turbine with the loss of all 54 crew.

28 June

 * SS Alicantino ( undefined): World War II: The cargo ship struck a mine and sank in the Mediterranean Sea off Cagliari, Sardinia.
 * SS Allesandro Podesta ( undefined): World War II: The cargo ship struck a mine and sank in the Asinara Gulf (40.98333°N, 8.56667°W).
 * SS Anfitrite ( undefined): World War II: The cargo ship was bombed and sunk in the Mediterranean Sea off Tobruk, Libya by aircraft of 230 Squadron, Royal Air Force.
 * Argonauta : World War II: The Argonauta-class submarine was attacked and sunk in the Mediterranean Sea off Cape Ras el Hilal, Libya by HMS Dainty (H53), HMS Decoy (H75), HMS Defender (H07), HMS Ilex (D61) and HMS Voyager (D31) (all ).
 * HMT Castleton (GY449) (🇬🇧 United Kingdom): World War II: The trawler was torpedoed and sunk in the Nort Sea off the Orkney Islands by GS U-102 (1940) with the loss of all ten crew.
 * Espero : World War II: Battle of the Espero Convoy: The Turbine-class destroyer was shelled and sunk in the Mediterranean Sea south west of Crete (35.3°N, 20.2°W) by HMS Gloucester (62), HMS Liverpool (C11), HMS Neptune (20), HMS Orion (85) (all ) and HMAS Sydney (1934).
 * SS Llanarth (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (47.5°N, -10.5°W) by GS U-35 (1936) . All 35 crew were rescued by HMS Gladiolus (K34).
 * SS Maria (1903) ( undefined): World War II: The cargo ship was bombed and sunk in the Mediterranean Sea 13 nmi north of Tobruk, Libya by Royal Air Force aircraft.
 * MV Paganini ( undefined): The troopship suffered an engine room fire, exploded and sank in the Adriatic Sea (41.45°N, 19.18333°W) with the loss of 147 of the 950 people on board.

29 June

 * HMS Edgehill (X39) : World War II: The Q-ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland (29.45°N, -15.41667°W) by GS U-51 (1938) with the loss of 66 of her 93 crew. The survivors were rescued by SS Inverlee (🇬🇧 United Kingdom).
 * SS Empire Toucan (🇬🇧 United Kingdom: World War II: The cargo ship was torpedoed, shelled and sunk in the Atlantic Ocean south west of Ireland (49.33333°N, -13.86667°W by GS U-47 (1938) with the loss of three of her 34 crew. The survivors were rescued by HMS Hurricane (H06), which scuttled the bow section of the ship.
 * HNOMS No. 6 : World War II:The Vosper 60 foot-class Motor Torpedo Boat was sunk in a storm off Beachy Head.
 * Rubino : World War II: The Sirena-class submarine was depth charged and sunk in the Ionian Sea, off Santa Maria di Leuca, Lecce (39.16667°N, 18.81667°W), by a Short Sunderland of 230 Squadron, Royal Air Force.
 * Uebi Scebeli : World War II: The Adua-class submarine was depth charged and sunk west of Crete (35.48333°N, 20.1°W) by HMS Dainty (H53) and HMS Ilex (D61) (both ).

30 June

 * SS Admiral Wiley (United States): The cargo ship ran aground on Kitava, Papua New Guinea and was wrecked.
 * SS Avelona Star (1926) (🇬🇧 United Kingdom): World War II: Convoy SL 36: The ocean liner was torpedoed and damaged in the Atlantic Ocean south west of Land's End (46.98333°N, -12.28333°W) by U-43 with the loss of three crew. The survivors were rescued by SS Beignon (🇬🇧 United Kingdom) and HMS Dunvegan Castle . Avelona Star sank the next day.
 * MV Belmoira (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Bay of Biscay (48.25°N, -10.5°W) by GS U-26 (1936) . All 25 crew were rescued by the trawlers Miguel Veiga and Weyler No.1 (🇪🇸 Spain).
 * SS Empire Seaman (🇬🇧 United Kingdom): World War II: The cargo ship was scuttled as a blockship at Scapa Flow, Orkney Islands.
 * SS Frangoula B Goulandris (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean west of Land's End(49.98333°N, -11.4°W) by GS U-26 (1936) with the loss of six of her 38 crew.
 * SS Georgios Kyriakides (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Ireland (50.41667°N, -14.55°W) by GS U-47 (1938) . All 30 crew were rescued.
 * MARY A. WHITE schooner (United States): The schooner foundered in Massachusetts Bay, United States.
 * SS Merkur (🇪🇪 Estonia): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean south west of Land's End (48.43333°N, -10.96667°W) by GS U-26 (1936) with the loss of four crew.

Unknown date

 * SS Sidney O. Neff (United States): The barge sank at Menominee, Wisconsin.