List of shipwrecks in September 1941

The list of shipwrecks in September 1941 includes all ships sunk, foundered, grounded, or otherwise lost during September 1941.

1 September

 * MV Andrea Gritti (1939) ( undefined): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea 25 nmi off Cape Spartivento, Calabria (37.55°N, 19.43333°W) by Fairey Swordfish aircraft of 830 Squadron, Fleet Air Arm.
 * SS Einvik (🇳🇴 Norway): World War II: Convoy SC 41: The cargo ship straggled behind the convoy due to the behaviour of her stokers deliberately failing to maintain enough steam. She was torpedoed, shelled and sunk in the Atlantic Ocean (approximately 61°N, -30°W) by GS U-501 . All 23 crew survived.

2 September

 * SS Oslebhausen (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank in the North Sea off Obrestad, Rogaland, Norway.

3 September

 * SS Comandant Bafile ( undefined): World War II: The cargo ship ran aground off Cape Comino, Sardinia and was wrecked.
 * SS Fort Richepanse (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (52.2°N, -21.16667°W) by GS U-567 with the loss of 41 of the 68 people on board. Survivors were rescued by ORP Garland and ORP Piorun (both ).
 * SS Meero ( Soviet Union): World War II: The cargo ship was torpedoed and sunk off Koivisto, Finland by FINNISH MOTOR TORPEDO BOAT Syöksy.

4 September

 * SS Abbas Combe (🇬🇧 United Kingdom): World War II: The coaster was bombed and sunk in the Irish Sea off Bardsey Island, Caernarvonshire by Luftwaffe aircraft with the loss of four crew.
 * SS Tokustan Maru (🇯🇵 Japan): The passenger ship collided with SS Koki Maru (🇯🇵 Japan) in the La Perouse Strait and sank with the loss of seventeen crew.

5 September

 * SS Einvik (🇳🇴 Norway): World War II: Convoy SC 41: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (60.63333°N, -31.3°W by GS U-501 . All 23 crew survived.
 * SS Isarco ( undefined): World War II: The cargo ship was torpedoed and sunk in the Tyrrhenian Sea 28 nmi south east of Ischia, Campania (42.8°N, 9.96667°W by HNLMS O-21 . Twenty-two survivors were rescued by HNLMS O-21.
 * Jarlinn (Light Blue Flag of Iceland.svg Iceland): World War II: The trawler was torpedoed and sunk in the Atlantic Ocean west of the Outer Hebrides, United Kingdom by GS U-141 (1940) with the loss of all eleven crew.
 * SS Maya (1894) ( undefined): World War II: The tanker was torpedoed and damaged in the Dardanelles 6 nmi off Tenedos, Turkey (39.71667°N, 25.95°W) by HMS Perseus (N36) and was beached.
 * SS Steel Seafarer (🇺🇸 United States): World War II: The cargo ship was bombed and sunk in the Red Sea off Shadwan, Egypt by Luftwaffe aircraft. All 36 crew were rescued.

6 September

 * GERMAN TRAINING SHIP Bremse : World War II: The artillery training ship was rammed and sunk in Hammerfjord, Norway by HMS Nigeria (60) ( with the loss of over half of her 285 crew.
 * HMT Brora : World War II: The naval trawler foundered in the Sound of Harris.
 * ITALIAN BARQUE Carla : World War II: The anti-aircraft barque was attacked in the Mediterranean Sea off La Spezia, Liguria by HNLMS O-24 and was driven ashore.
 * King Erik (🇬🇧 United Kingdom): World War II: The trawler was torpedoed and sunk in the Atlantic Ocean off Iceland by GS U-141 (1940) with the loss of all fifteen crew.
 * MO-404 : World War II: The MO-4-class patrol boat was shelled and sunk in the Baltic Sea off Kuivastu, Estonia by German shore-based artillery.
 * MO-407 : World War II: The MO-4-class patrol boat was shelled and sunk in the Baltic Sea off Kuivastu by German shore-based artillery.
 * HMT Strathborve : World War II: The naval trawler struck a mine and sank in the North Sea off the mouth of the Humber with the loss of fifteen crew.

7 September

 * SS Duncarron (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the North Sea 3 nmi north of Sheringham, Norfolk by GERMAN TORPEDO BOAT S-48, GERMAN TORPEDO BOAT S-49, GERMAN TORPEDO BOAT S-50, GERMAN TORPEDO BOAT S-52 and GERMAN TORPEDO BOAT S-107 (all with the loss of nine crew.
 * SS Eikhaug (1903) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the North Sea (53.09778°N, 1.34722°W) by GERMAN TORPEDO BOAT S-52 with the loss of fifteen of her nineteen crew.
 * SS Empire Gunner (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in St George's Channel (52.13333°N, -5.3°W by Luftwaffe aircraft.
 * SS Marcrest (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea off Great Yarmouth, Norfolk by Luftwaffe aircraft. All crew were rescued.
 * Ophir II (🇬🇧 United Kingdom): World War II: The trawler struck a mine and sank in the North Sea 4 nmi off the Humber Lightship (🇬🇧 United Kingdom) with the loss of five crew.
 * SS Sirena ( undefined): World War II: The coaster was torpedoed and sunk in the Mediterranean Sea 50 nmi west of Benghazi, Libya by HMS Thunderbolt (N25).
 * SS Trsat (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea 7 nmi north east by east of Kinnaird Head, Aberdeenshire by Luftwaffe aircraft with the loss of three crew.

8 September

 * HMS Corfield : World War II: The auxiliary minesweeper struck a mine and sank in the North Sea off Grimsby, Lincolnshire.
 * ITALIAN SUBMARINE Maggiore Baracca : World War II: The Marconi-class submarine was shelled, rammed, and sunk in the Atlantic Ocean (40.5°N, -21.25°W) by HMS Croome (L62) . Twenty-eight crew were rescued.

9 September

 * SS Erna Oldendorf (🇩🇪 Germany): The cargo ship collided with a tanker in the Bay of Biscay off Saint-Nazaire, Finistère, France and sank.
 * SS Empire Springbuck (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean off Cape Farewell, Greenland (61.63333°N, -40.66667°W) by GS U-81 (1941) ( with the loss of all 39 crew.
 * SS Italo Balbo ( undefined) World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea 10 nmi west of Campo alle Serre, Elba (42.78333°N, 9.95°W) by HNLMS O-24.
 * SS Socony (🇺🇸 United States): The tanker collided with SS Tongariro (🇬🇧 United Kingdom) in the Atlantic Ocean off the Azores, Portugal and sank.
 * SS Trifels (1921) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk in the English Channel off Boulogne, Pas-de-Calais, France by MTB 54 . The crew were rescued by GERMAN PATROL VESSEL V-202 and GERMAN PATROL VESSEL V-208 (both ).

10 September

 * SS Baron Pentland (🇬🇧 United Kingdom) World War II: Convoy SC 42: The cargo ship was torpedoed and damaged in the Atlantic Ocean on 10 September by GS U-652 . She consequently straggled behind the convoy; and was torpedoed and sunk at 61.25°N, -41.08333°W by GS U-372 with the loss of two of her 41 crew. Survivors were rescued by HMCS Orillia (K119).
 * HMT Christine Rose : World War II: The naval trawler ran aground on Knap Rock, Argyllshire and was wrecked with the loss of one crew member.
 * SS Empire Hudson (🇬🇧 United Kingdom): World War II: Convoy SC 42: The CAM ship was torpedoed and sunk in the Atlantic Ocean (61.46667°N, -40.85°W) by GS U-82 (1941) with the loss of four crew.
 *  Harry K. Fooks (🇺🇸 United States): The auxiliary schooner foundered off Cape May, New Jersey.
 * SS Julius Hugo Stinnes 27 (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank in the Baltic Sea off Kolberg, Pomerania.
 * GERMAN MINESWEEPER M-1102 : World War II: The auxiliary minesweeper was torpedoed and sunk in the North Sea (58.13333°N, 6.63333°W) by Royal Air Force aircraft.
 * SS Mariann (🇱🇻 Latvia): World War II: The cargo ship struck a mine and sank in the Baltic Sea off the coast of Germany.
 * MV Marken (🇳🇱 Netherlands): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean (1.6°N, -36.91667°W) by GS U-111 (1940) . All 37 crew were rescued by a Spanish merchant ship.
 * SS Muneric (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (61.63333°N, -40.66667°W) by GS U-432 with the loss of all 63 people on board.
 * SS Murfete (🇬🇧 United Kingdom): World War II: The ferry was torpedoed and sunk in the Mediterranean Sea by ITALIAN SUBMARINE Topazio with the loss of one crew member. Survivors were rescued by SS Talodi (🇪🇬 Egypt).
 * MV Sally Mærsk (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship straggled behin the convoy. She was torpedoed and sunk in the Atlantic Ocean (61.66667°N, -40.5°W) by GS U-81 (1941) . All 34 crew were rescued by HMCS Kenogami (K125).
 * SS Stargard (🇳🇴 Norway): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (61.5°N, -40.5°W) by GS U-432 with the loss of two of her seventeen crew. Survivors were rescued by SS Regin (1916) (🇳🇴 Norway) and one of the convoy's escorts.
 * SS Svam I ( undefined): World War II: The coaster was torpedoed and sunk in the Gulf of Sirte by HMS Thunderbolt (N25).
 * SS Tahchee (🇬🇧 United Kingdom): World War II: convoy SC 42: The tanker was torpedoed and damaged in the Atlantic Ocean (61.25°N, -41.08333°W) by GS U-652 . The crew abandoned the burning ship but later reboarded here and extinguished the fire. Tahchee was taken in tow by HMCS Orillia (K119) and arrived at Reykjavík, Iceland on 15 September. Later repaired and returned to service in November 1942.
 * SS Thistleglen (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (61.98333°N, -39.76667°W) by GS U-85 (1941) with the loss of three of her 46 crew. Survivors were rescued by SS Lorient (🇬🇧 United Kingdom)
 * GS U-501 : World War II: The Type IXC submarine was depth charged and damaged in the Denmark Strait (62.83333°N, -37.83333°W) by HMCS Chambly (K116) (. She surfaced and surrendered to HMCS Moosejaw (K164) which put a party on board to retrieve secret documents. U-501 sank with the loss of eleven of her 46 crew and a crew member from HMCS Moosejaw.
 * SS Winterswijk (🇳🇱 Netherlands): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (61.63333°N, -40.66667°W) by GS U-432 with the loss of twenty of her 31 crew. Survivors were rescued by one of the escorting corvettes.

11 September

 * SS Alfredo Oriani ( undefined): World War II: The cargo ship was bombed and damaged in the Mediterranean Sea (35.83333°N, 20.26667°W) by Bristol Blenheim aircraft of the Royal Air Force. She sank on 13 September 180 nmi north of Benghazi, Libya (35.83333°N, 20.26667°W).
 * SS Berury (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and damaged in the Atlantic Ocean (62.66667°N, -38.83333°W) by GS U-207) with the loss of one of her 42 crew. Survivors were rescued by HMCS Kenogami (K125) and HMCS Moosejaw (K164) (both ). Berury was scuttled by a Royal Navy ship.
 * MV Bulysses (🇬🇧 United Kingdom): World War II: Convoy SC 42: The tanker was torpedoed and sunk in the Atlantic Ocean (62.66667°N, -38.83333°W) by GS U-82 (1941) with the loss of one of her 61 crew. Survivors were rescued by SS Wisla (🇫🇮 Finland).
 * SS Empire Crossbill (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (63.23333°N, -37.2°W) by GS U-81 (1941) with the loss of all 49 people on board.
 * MV Empire Dawn (🇬🇧 United Kingdom): The cargo ship was shelled and sunk in the South Atlantic (-34°N, 2°W) by GERMAN AUXILIARY CRUISER Michel with the loss of 20 of her 41 crew.
 * SS Garm (🇸🇪 Sweden): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (63.03333°N, -37.85°W) by GS U-432 with the loss of six of her twenty crew. Survivors were rescued by SS Bestum (🇳🇴 Norway).
 * SS Gypsum Queen (🇬🇧 United Kingdom) World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (63.08333°N, -37.83333°W) by GS U-82 (1941) with the loss of ten of her 36 crew. Survivors were rescued by SS Vestland (🇳🇴 Norway).
 * SS Livorno (1924) ( undefined): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea off Bougie, Algeria (31.96667°N, 19.38333°W) by HMS Thunderbolt (N25).
 * SS Montana (1934) (🇵🇦 Panama): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 400 nmi off Cape Farewell, Greenland (63.66667°N, -35.83333°W) by GS U-105 (1940) with the loss of eighteen of her 26 crew.
 * SS Randa (🇨🇦 Canada): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (approximately 63°N, -37°W) by GS U-204).
 * ICEBREAKER Sadko ( Soviet Union): The icebreaker ran aground in the Kara Sea and sank. All crew were rescued by Lenin ( Soviet Union).
 * SS Scania (1901) (🇸🇪 Sweden): World War II: Convoy SC 42: The cargo ship was torpedoed and damaged in the Atlantic Ocean (63.08333°N, -37.83333°W) by GS U-82 (1941) . She straggled behind the convoy and was torpedoed and sunk by GS U-202 (. All 24 crew were rescued.
 * SS Stonepool (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (63.08333°N, -37.83333°W) by GS U-207) with the loss of 42 of her 49 crew. Survivors were rescued by HMCS Kenogami (K125)
 * GS U-207 : World War II: The Type VIIC submarine was depth charged and sunk in the Strait of Denmark by HMS Leamington (G19) and HMS Veteran (D72) (both ) with the loss of all 41 crew.

12 September

 * SS Caffaro (1924) ( undefined): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea north west of Tripoli, Libya (34.23333°N, 11.9°W) by Fairey Swordfish aircraft of 830 Squadron, Fleet Air Arm.
 * SS Ginette le Borgne (🇫🇷 France): World War II: The cargo ship struck a mine and sank in the Mediterranean Sea off Baratili San Pietro, Sardinia.
 * SS Ottar Jarl (1921) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in Tanafjord (70.95°N, 29°W) by SOVIET SUBMARINE SC-422 with the loss of one of her crew.
 * PC-121 : World War II: The MO-4-class patrol vessel was bombed and sunk in the Black Sea off Tendra by Luftwaffe aircraft.
 * ST Tai Koo (🇬🇧 United Kingdom): World War II: The tug struck a mine and sank in the Red Sea (16.75°N, 40.08333°W) with the loss of 26 of the 63 people on board.
 * SS Tauri (1908) (🇫🇮 Finland): World War II: The cargo ship was bombed and sunk by Fleet Air Arm aircraft off Moster, Norway. Raised and broken up in Stavanger, Norway, in 1953.

13 September

 * Barøy (🇳🇴 Norway): World War II: The passenger ship was torpedoed and sunk in the Vestfjord by a Fairey Albacore of 817 Squadron, Royal Australian Navy with the loss of 112 of the 123 people on board.
 * SS Bloomfield (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the Atlantic Ocean (61.83333°N, -6°W) by Luftwaffe aircraft.
 * Ilmarinen World War II: The coastal defence ship struck a mine and sank in the Baltic Sea off Utö, Finland with the loss of 271 of her 403 crew.
 * SS Richard With (🇳🇴 Norway): World War II: The passenger/cargo ship was torpedoed and sunk in the Norwegian Sea (70.83333°N, 23.95°W) by HMS Tigris (N63) with the loss of 97 lives. Thirteen people survived.
 * GERMAN PATROL VESSEL V-308 : World War II: The vorpostenboot was torpedoed and sunk in the Baltic Sea off Porkkala, Finland by a Soviet Navy motor torpedo boat.

14 September

 * SS Moldavia (1928) ( Soviet Union): World War II: The cargo liner was bombed and sunk in the Black Sea off Tenderovskaya by Luftwaffe aircraft.
 * SS Nicolo Odero ( undefined): World War II: The cargo ship was bombed and sunk in the Mediterranean Sea off Tripoli, Libya (32.85°N, 12.3°W) by Royal Air Force aircraft.

15 September

 * ST Atlantic Cock (🇬🇧 United Kingdom): World War II: The tug struck a mine and sank in the Clyde at Dalmuir, Renfrewshire and was beached. She was refloated on 11 October.
 * SS Birtley (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and was damaged in the North Sea (53.1°N, 1.275°W). She sank the next day at 53.05°N, 1.3°W).
 * MV Daru (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea (51.94167°N, -5.96667°W) by Luftwaffe aircraft.
 * SS Empire Eland (🇬🇧 United Kingdom): Convoy ONn 14: World War II: The Design 1019 cargo ship was torpedoed and sunk in the Atlantic Ocean (54°N, -28°W) by GS U-94 (1940) with the loss of all 37 crew.
 * MV Hanseat (🇩🇪 Germany: The coaster ran aground on Rügen, Mecklenburg-Vorpommern and was wrecked.
 * ST Flying Kite (🇬🇧 United Kingdom): World War II: The tug struck a mine and sank in the Clyde at Dalmuir with the loss of five of her eight crew.
 * SS Newbury (🇬🇧 United Kingdom: World War II: Convoy ON 14: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (54.65°N, -28.06667°W) by GS U-94 (1940) with the loss of all 49 crew.
 * SS Pegasus (1920) (🇬🇷 Greece: World War II: Convoy ON 14: The cargo ship was torpedoed and sunk in the Atlantic Ocean (54.66667°N, -29.83333°W) by GS U-94 (1940) with the loss of sixteen of her 29 crew. Survivors were rescued by a Swedish merchant ship.
 * MV Pontfield (🇧🇪 Belgium): World War II: The tanker struck a mine in the North Sea (52.05°N, 1.34167°W) and broke in two. The bow section sank, the stern section was beached at Salt End, Yorkshire. Later repaired with a new bow section constructed and returned to service.
 * SS Sovetskaya Bessarabia ( Soviet Union): The passenger ship was wrecked at Tenderovskaya.

16 September

 * MV Jedmoor (🇬🇧 United Kingdom): World War II: Convoy SC 42: The cargo ship was torpedoed and sunk in the Atlantic Ocean (approximately 59°N, -40°W) by GS U-98 (1940) with the loss of 31 of her 36 crew. Survivors were rescued by SS Campus (🇬🇧 United Kingdom) and SS Knoll (🇳🇴 Norway).
 * ITALIAN SUBMARINE Smeraldo : The submarine sank in the Mediterranean Sea.
 * GERMAN PATROL BOAT V-5107 : The vorpostenboot collided with SS Carl Rehder (🇩🇪 Germany off the coast of Norway and sank.
 * SS Yarrawonga (🇸🇪 Sweden): World War II: The cargo ship was bombed and sunk at Hamburg by Royal Air Force aircraft. She was later raised, repaired and returned to service.

17 September

 * HMS Göteborg (J5): World War II: The Göteborg-class destroyer was sunk by an explosion in Hårsfjärden.
 * SS Johann Wessels (🇩🇪 Germany): World War II: The cargo ship struck a mine and sank in Norwegian waters.
 * HMS Klas Horn (3) : World War II: The Klas-class destroyer was sunk by an explosion in Hårsfjärden. She was repaired using parts from HMS Göteborg and HMS Klas Ugga (both ).
 * HMS Klas Ugga (4) : World War II: The Klas-class destroyer was sunk by an explosion in Hårsfjärden.
 * Luneberg (🇩🇪 Germany): The trawler struck a mine in the Baltic Sea off Saaremaa, Estonia and was damaged. She was sunk by Soviet artillery.
 * SS Teddington (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and damaged in the North Sea (54.05°N, 1.58333°W) by GERMAN TORPEDO BOAT S-50, GERMAN TORPEDO BOAT S-51 and GERMAN TORPEDO BOAT S-52 (all ). She was taken in tow, but came ashore the next day at Overstrand, Norfolk. All crew were rescued.
 * SS Tetela (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and damaged in the North Sea (54.06667°N, 1.58333°W) by GERMAN TORPEDO BOAT S-50, GERMAN TORPEDO BOAT S-51 and GERMAN TORPEDO BOAT S-52 (all ). She was taken in tow and beache on the Haile Sand Flat. Refloated the next day and taken to Hull, Yorkshire.

18 September

 * MV Neptunia (1931) ( undefined): World War II: The troopship was torpedoed and sunk in the Mediterranean Sea off Misrata, Libya (33.03333°N, 14.7°W) by HMS Upholder (P37).
 * MV Oceania (1932) ( undefined): World War II: The troopship was torpedoed and sunk in the Mediterranean Sea off Tripoli, Libya (33.03333°N, 14.7°W) by HMS Upholder (P37) (.
 * SOVIET MONITOR Vitebsk : World War II: The river monitor was scuttled near Kiev to avoid capture by the Germans. Raised again by the Soviets in August 1944, and scrapped.

19 September

 * SS Bradglen (🇬🇧 United Kingdom): World War II: The cargo ship struck a mine and sank in The Wash with the loss of eight crew.
 * Bunte Kuh (🇩🇪 Germany): World War II: The trawler struck a mine and sank in the Kattegat.
 * SS Burton (🇬🇧 United Kingdom): World War II: The cargo ship was torpoedoed and sunk in the Atlantic Ocean off Greenland by GS U-74 (1940).
 * SS City of Waterford (🇬🇧 United Kingdom): World War II: Convoy OG 70: The cargo ship collided in the Atlantic Ocean with ST Thames (🇬🇧 United Kingdom and sank. Her 23 crew were rescued by SS Walmer Castle (1936) (🇬🇧 United Kingdom).
 * RFA Denbydale : World War II: The Dale-class oiler was severely damaged at Gibraltar by a limpet mine laid by ITALIAN SUBMARINE Scire . She was thereafter used as a fuelling hulk at Gibraltar until 1955.
 * SS Durham (1934) (🇬🇧 United Kingdom: World War II: The tanker was torpedoed and damaged at Gibraltar by ITALIAN SUBMARINE Scire and was beached. She was subsequently towed to Falmouth, Cornwall for repairs.
 * SS Empire Silver (🇬🇧 United Kingdom): World War II: The tanker was damaged by a limpet mine laid by ITALIAN SUBMARINE Scire . Her back was broken and she was declared a constructive total loss. Subsequently used as a fuelling hulk at Gibraltar.
 * SS Fiona Shell (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and sunk at Gibraltar by ITALIAN SUBMARINE Scire.
 * Glen Alva (🇬🇧 United Kingdom): World War II: The trawler struck a mine and sank in the Thames Estuary off Southend, Essex with the loss of both crew.
 * HMCS Levis (K115) : World War II: Convoy SC 44: The Flower-class corvette was torpedoed and damaged in the Atlantic Ocean off Cape Farewell, Greenland (60.11667°N, -38.61667°W) by GS U-74 (1940) with the loss of eighteen of her 109 crew. Although she was taken in tow, she later capsized and sank. Survivors were rescued by HMCS Agassiz (K129) and HMCS Mayflower (K191) (both ).
 * SS Prestatyn Rose (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and damaged in the North Sea 3 nmi off Harwich, Essex (51.87361°N, 1.59583°W) and was beached at Harwich. She was refloated on 28 September.
 * SS Rodina (🇷🇴 Romania): World War II: The cargo ship struck a mine and sank in the Black Sea 25 nmi off Burghaz.

20 September

 * SS Baltallinn (🇬🇧 United Kingdom): World War II: Convoy OG 74: The cargo ship was torpedoed and sunk in the Atlantic Ocean (48.11667°N, -22.11667°W) by GS U-124 (1940) with the loss of eighteen of her 38 crew. Survivors were rescued by SS Walmer Castle (1936) (🇬🇧 United Kingdom).
 * MV Barbro (1931) (🇳🇴 Norway): World War II: Convoy SC 44: The tanker was torpedoed and sunk in the Atlantic Ocean (61.5°N, -35.11667°W) by GS U-552 with the loss of all 34 crew.
 * MV Cingalese Prince (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (-2°N, -25.5°W) by GS U-111 (1940) with the loss of 57 of her 77 crew. Survivors were rescued by SS Castillo Montjuich (🇪🇸 Spain), HMS Londonderry (L76) and HMS Weston (L72) (both ).
 * SS Empire Burton (🇬🇧 United Kingdom): World War II: Convoy SC 44: The CAM ship was torpedoed and sunk in the Atlantic Ocean east of Cape Farewell, Greenland (61.56667°N, -35.08333°W) by GS U-74 (1940) ( with the loss of two of her 60 crew. Survivors were rescued by HMS Honeysuckle (K27).
 * SS Empire Moat (🇬🇧 United Kingdom): World War II: Convoy OG 74: The cargo ship was torpedoed and damaged in the Atlantic Ocean 800 nmi west of Ouessant, Finistère, France (48.11667°N, -22.11667°W) by GS U-124 (1940) . The ship was abandoned, and was presumed to have sunk later. All 30 crew were rescued by SS Walmer Castle (1936) (🇬🇧 United Kingdom).
 * HMT Marconi : The naval trawler sank in the North Sea off Harwich, Essex.
 * SS Metz (🇩🇪 Germany): The coaster sank in the North Sea off Vlaardingen, South Holland, Netherlands.
 * SS Monselet (🇫🇷 France): World War II: The cargo ship was bombed and sunk in the Mediterranean Sea off Sfax, Tunisia by Royal Air Force aircraft.
 * SS Pink Star (🇵🇦 Panama): World War II: Convoy SC 44: The cargo ship was torpedoed and sunk in the Atlantic Ocean (61.6°N, -37.11667°W) by GS U-552 with the loss of thirteen of her 35 crew.
 * SS Portsdown (🇬🇧 United Kingdom): World War II: The ferry struck a mine and sank in the Atlantic Ocean (50.76861°N, -6.41667°W) with the loss of 23 lives.
 * SS T J Williams (🇬🇧 United Kingdom): World War II: Convoy SC 44: The tanker was torpedoed and sunk in the Atlantic Ocean east north east of Cape Farewell, Greenland (61.6°N, -35.11667°W) by GS U-552 with the loss of seventeen of her 39 crew. Survivors were rescued by HMS Honeysuckle (K27).

21 September

 * SS Antar (1890) (🇵🇱 Poland): World War II: The Tanker was shelled and set on fire in the Mediterranean Sea (33.95°N, 35.06667°W) off Beirut by ITALIAN SUBMARINE Ascianghi . She was taken in tow by HMS Southern Isle but sank two days later.
 * SS Barta ( Soviet Union): World War II: The cargo ship was sunk at Kronstadt by enemy action. She was raised on 31 March 1944 and scrapped in 1945.
 * SOVIET DESTROYER Frunza : World War II: The destroyer was bombed and sunk in the Black Sea off Tendra Island by Luftwaffe aircraft.
 * SS Lissa (🇬🇧 United Kingdom): World War II: Convoy OG 74: The cargo ship was torpedoed and sunk in the Atlantic Ocean (approximately 47°N, -22°W) by GS U-201 with the loss of all 26 crew.
 * SS Rhineland (🇬🇧 United Kingdom): World War II: Convoy OG 74: The cargo ship was torpedoed and sunk in the Atlantic Ocean (approximately 47°N, -22°W) by GS U-201 with the loss of all 26 crew.
 * SS Runa (1930) (🇬🇧 United Kingdom): World War II: Convoy OG 74: The cargo ship was torpedoed and sunk in the Atlantic Ocean (46.33333°N, -22.38333°W) by GS U-201 with the loss of fourteen of her 23 crew. Survivors were rescued by HMS Deptford (L53).
 * SOVIET SUBMARINE Steregushchy : World War II: The submarine was bombed and sunk off Peteroff.
 * SS Walmer Castle (1936) (🇬🇧 United Kingdom): World War II: Convoy OG 74: The convoy rescue ship was bombed and damaged in the Atlantic Ocean (47.26667°N, -22.41667°W) by Luftwaffe aircraft with the loss of ten lives, including five crew from SS Empire Moat (🇬🇧 United Kingdom). The ship was abandoned and was scuttled by HMS Deptford (U53) and HMS Marigold (K87) (both ).
 * SS Vancouver (1928) (🇬🇧 United Kingdom): World War II: The tanker struck a mine and sank in the North Sea 2 nmi off the Sunk Lightship (🇬🇧 United Kingdom).

22 September

 * MV Edward Blyden (🇬🇧 United Kingdom): World War II: Convoy SL 87 The cargo ship was torpedoed and sunk in the Atlantic Ocean (27.6°N, -24.48333°W) by GS U-103 (1940) . All 63 crew were rescued by HMS Bideford (L43).
 * SS Erna III (🇬🇧 United Kingdom): World War II: Convoy ON 16: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean north east of Cape Farewell, Greenland (61.75°N, -35.25°W) by GS U-562 with the loss of all 25 crew.
 * HMS ML 144 : World War II: The Fairmile B ClassMotor Launch struck a mine and sank in the English Channel.
 * SS Niceto de Larrinaga (🇬🇧 United Kingdom): World War II: Convoy SL 87 The cargo ship was torpedoed and sunk in the Atlantic Ocean (27.53333°N, -24.43333°W) by GS U-103 (1940) with the loss of two of her 55 crew. Survivors were rescued by HMS Gardenia (K99) and HMS Lulworth (Y60) (both ).
 * SS Silverbelle (🇳🇱 Netherlands): World War II: Convoy SL 87: The cargo ship was torpedoed and damaged in the Atlantic Ocean (25.75°N, -24°W) by GS U-68 (1940) . She was taken under tow by FRENCH MINESWEEPER Commandant Duboc but sank on 29 September at 26.5°N, -23.23333°W). All 60 people on board were rescued.
 * SS Vechtstroom (🇳🇱 Netherlands): World War II: The coaster was bombed and sunk in the North Sea by Luftwaffe aircraft. All crew were rescued.

23 September

 * MV Arawak (🇬🇧 United Kingdom): The coaster caught fire and sank off Cape Canaveral, Florida, United States.
 * SS Carmelo Noli ( undefined): World War II: The coaster struck a mine and sank in the Mediterranean Sea off Livorno, Tuscany.
 * SS Luvsee (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk in the Adriatic Sea 6 nmi north east of Šibenik, Yugoslavia by HMS Triumph (N18).
 * SOVIET SUBMARINE M-74 : World War II: The M-class submarine was bombed and sunk at Krondstadt by Luftwaffe aircraft. Raised in 1942, but not repaired, striken in 1944.
 * SOVIET BATTLESHIP Marat : World War II: The was bombed and sunk in shallow wate at Krondstadt by Junkers Ju 87 aircraft of III Staffel, StG 2, Luftwaffe. She was used as a stationary gun battery for the remainder of the war.
 * SS Poseidone (1912) ( undefined): World War II: The cargo ship was torpedoed and sunk in the Adriatic Sea 4 nmi north east of Ortona, Abruzzo by HMS Triumph (N18).

24 September

 * SS Bereby (🇬🇧 United Kingdom): The cargo ship ran aground at Ringvad Point, Northern Ireland and was wrecked.
 * MV Dixcove (🇬🇧 United Kingdom): World War II: Convoy SL 87: The cargo ship was torpedoed and sunk in the Atlantic Ocean (31.21667°N, -23.68333°W) by GS U-107 (1940) with the loss of two of her 53 crew. Survivors were rescued by SS Ashby (🇬🇧 United Kingdom) and SS Fana (🇳🇴 Norway).
 * SS John Holt (🇬🇧 United Kingdom): World War II: Convoy SL 87: The cargo ship was torpedoed and sunk in the Atlantic Ocean (31.2°N, -23.53333°W) by GS U-107 (1940) with the loss of one of her 69 crew. Survivors were rescued by HMS Gorleston (Y92).
 * GERMAN MINELAYER Königin Luise : World War II: The minelayer struck a mine and sank in the Baltic Sea off Helsinki, Finland.
 * SS Lafian (🇬🇧 United Kingdom): World War II: Convoy SL 87: The cargo ship was torpedoed and sunk in the Atlantic Ocean (31.2°N, -23.53333°W) by GS U-107 (1940) . All 47 crew were rescued by HMS Gorleston (Y92).
 * SS Nigaristan (🇬🇧 United Kingdom): The cargo ship caught fire and sank in the Atlantic Ocean.
 * SS Prospero ( undefined): World War II: The cargo ship was bombed and sunk at Benghazi, Libya by Royal Air Force aircraft.
 * SS Stamatios G Embiricos (🇬🇷 Greece): World War II: The cargo ship was shelled and sunk in the Atlantic Ocean (1.01667°N, 64.5°W) by GERMAN AUXILIARY CRUISER Kormoran with the loss of five of her 35 crew. The survivors were taken as prisoners of war.
 * SS St Clair II (🇬🇧 United Kingdom): World War II: Convoy SL 87 The cargo ship was torpedoed and sunk in the Atlantic Ocean (30.41667°N, -23.58333°W) by GS U-67 (1940) with the loss of thirteen crew. Survivors were rescued by HMS Gorleston (Y92) and HMS Lulworth (Y60) (both ).

25 September

 * SS Avra (🇬🇧 United Kingdom, The cargo ship collided with another vessel north of John O'Groats, Caithness and sank.
 * SS Empire Stream (🇬🇧 United Kingdom): World War II: Convoy HG 73: The ore carrier was torpedoed and sunk in the Atlantic Ocean (46.05°N, -24.66667°W) by GS U-124 (1940) with the loss of all 46 people on board.
 * MV Libby-Maine (🇺🇸 United States): The cargo ship foundered in the Caribbean Sea off the coast of Venezuela.
 * SS Varangberg (1915) (🇳🇴 Norway): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean (47.83333°N, -24.83333°W) by GS U-203 with the loss of 22 or her 28 crew. Survivors were rescued by HMS Jasmine (K23).

26 September

 * SS Avoceta (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean north of the Azores, Portugal (47.95°N, -24.08333°W) by GS U-203 with the loss of 123 of the 166 people on board. Survivors were rescued by SS Cervantes (1919) (🇬🇧 United Kingdom), HMS Jasmine (K23) and HMS Periwinkle (K55) (both ).
 * MV British Prince (🇬🇧 United Kingdom): World War II: The cargo ship was bombed and sunk in the North Sea (53.86667°N, 0.41667°W) by Luftwaffe aircraft. All crew were rescued.
 * Capodoglio ( undefined): World War II: The trawler was bombed and sunk in the Mediterranean Sea by Royal Air Force aircraft.
 * SS Cervantes (1919) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean by GS U-124 (1940) with the loss of eight lives.
 * SS Citta di Bastia ( undefined): World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea (36.35°N, 24.38333°W) by HMS Tetrarch (N77).
 * SS Cortes (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean (47.8°N, -23.75°W) by GS U-203 (1940) with the loss of all 43 people on board.
 * SS Empire Kudu (🇬🇧 United Kingdom): The cargo ship came ashore in a storm 6 nmi west of Point Armour, Belle Isle Strait, a total loss.
 * SS Empire Mallard (🇬🇧 United Kingdom: The cargo ship collided in the Strait of Belle Isle with SS Empire Moon (🇬🇧 United Kingdom) and sank.
 * SS Gillhausen (🇩🇪 Germany): The cargo ship sank off the coast of Norway.
 * SS I C White (🇵🇦 Panama): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean (-10.43333°N, -27.5°W) by GS U-66 (1940) with the loss of three of her 37 crew. Survivors were rescued by SS Delnorte and SS West Nilus (both 🇺🇸 United States)
 *  Kantara (🇬🇧 United Kingdom): The schooner sank at an unknown location.
 * SS Lapwing (1920) (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean north north west of the Azores (47.66667°N, -23.46667°W) by GS U-124 (1940) with the loss of 24 of her 34 crew. Other casualties included two of the three rescued from SS Cortes (🇬🇧 United Kingdom).
 * SS Petrel (1920) (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean (47.66667°N, -23.5°W) by GS U-124 (1940) with the loss of 22 of her 31 crew. Survivors were rescued by SS Lapwing (1920) (🇬🇧 United Kingdom).
 * SS Varangberg (🇳🇴 Norway): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean north of the Azores (47.83333°N, -24.83333°W) by GS U-203 with the loss of 21 of her 27 people on board. Survivors were rescued by HMS Jasmine (K23).
 * SS War Waveney (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Occean.

27 September

 * ITALIAN TORPEDO BOAT Albatros : World War II: The torpedo boat was torpedoed and sunk in the Mediterranean Sea off Messina, Sicily by HMS Upright (N89) . GS U-371 rescued 42 crew.
 * SS Cervantes (1919) (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean north north east of the Azores, Portugal (48.61667°N, -20.01667°W) by GS U-201 with the loss of eight of the 40 people on board. Survivors were rescued by SS Starling (🇬🇧 United Kingdom).
 * CKA-022 : World War II: The MO-4-class patrol vessel was bombed and sunk in the Black Sea off Tendra by Luftwaffe aircraft.
 * Fram (🇫🇴 Faroe Islands): World War II: The trawler was bombed and sunk at Vestmannhavn by Luftwaffe aircraft.
 * SS Imperial Star (🇬🇧 United Kingdom): World War II: The troopship was bombed and damaged in the Mediterranean Sea. All crew were rescued by HMS Farndale (L70) and HMS Heythrop (L85) (both ). She was taken in tow by HMS Oribi (G66) but was later scuttled.
 * SS Margareta (1904) (🇬🇧 United Kingdom): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean (50.25°N, -17.45°W) by GS U-201 . All 34 crew were rescued by HMS Hibiscus (K24).
 * MO-196 : World War II: The MO-4-class patrol boat was shelled and sunk in the Baltic Sea off Shlisselburg by German shore-based artillery.
 * SS Panajotis Kramottos (🇬🇷 Greece): World War II: The coaster was shelled and sunk in the Aegean Sea south west of Milos by HMS Tetrarch (N77).
 * SS Siremalm (🇳🇴 Norway): World War II: Convoy HG 73: The cargo ship was torpedoed and sunk in the Atlantic Ocean (49.08333°N, -20.16667°W) by GS U-201 with the loss of all 27 crew.
 * HMS Springbank : World War II: Convoy HG 73: The fighter catapult ship was torpedoed and damaged in the Atlantic Ocean by GS U-201 with the loss of 32 of her 233 crew. Survivors were rescued by HMS Hibiscus (K24), HMS Jasmine (K23) and HMS Periwinkle (K55) (all ). HMS Springbank was subsequently scuttled by HMS Jasmine.
 * GERMAN SUBMARINE CHASER UJ-1201 : World War II: The naval trawler was torpedoed and sunk in the Baltic Sea off Rolvsøy, Østfold, Norway by HMS Trident (N52).

28 September

 * ITALIAN SUBMARINE Fisalia : World War II: The Medusa-class submarine was shelled and sunk in the Mediterranean Sea off Jaffa, Palestine (39.31667°N, 34.28333°W) by HMS Hyacinth (K84).
 * Murielle (🇬🇧 United Kingdom): World War II: The trawler struck a mine and was damaged in the Irish Sea about 8 nmi south west of the Morecambe Bay Lightship (🇬🇧 United Kingdom). She was taken in tow but later sank.
 * MO-305 : World War II: The MO-4-class patrol boat was bombed and sunk by Luftwaffe aircraft.
 * SS Yalova (🇩🇪 Germany): World War II: The cargo ship was torpedoed and damaged in the Mediterranean Sea 20 nmi south of San Giorgio by HMS Tetrarch (N77) and was beached. She was torpedoed and sunk on 3 October by HMS Talisman (N78).

29 September

 * SS Fluvior ( undefined): World War II: The coastal tanker struck a mine and sank at Tripoli, Libya.
 * SS Ilvana ( undefined): The coaster sank at Port Torres, Sardinia.
 * SS Superga ( undefined): World War II: The tanker was torpedoed and sunk in the Black Sea (43°N, 27.96667°W) by SOVIET SUBMARINE Shch-211.
 * SS Vaindlo (🇸🇪 Sweden): World War II: The coaster was bombed and sunk in the Gulf of Finland.

30 September

 * ITALIAN SUBMARINE Adua : World War II: The Adua-class submarine was depth charged and sunk in the Mediterranean Sea east of Cartagena, Murcia, Spain by HMS Gurkha (F20) and HMS Legion (G74) (both ).
 * RUSSIAN CRUISER Aurora : World War II: The Pallada-class protected cruiser was sunk in Oranienbaum harbour. Raised and repaired post-war.
 * HMT Eileen Duncan : World War II: The naval trawler was bombed and sunk in the Tyne by Luftwaffe aircraft.
 * MV Pugachev ( Soviet Union): World War II: The cargo ship was bombed and sunk in the Black Sea by Luftwaffe aircraft.
 * HMT Star of Deveron : World War II: The naval trawler was bombed and sunk in the Tyne by Luftwaffe aircraft with the loss of one crew member.

Unknown date

 * SOVIET SUBMARINE P-1 : World War II: The P-class submarine was probably lost to a mine near hanko, Finland in mid-September.
 * SOVIET SUBMARINE ShCh-319 : World War II: The P-class submarine was lost after September 29.
 * MV Trinidad (🇵🇦 Panama) World War II : The coaster was either torpedoed and sunk in the Atlantic Ocean (46.1°N, -17.06667°W) by ITALIAN SUBMARINE Maggiore Baracca on 5 September; or was torpedoed and sunk at that location by GS U-95 (1940)  on 6 September. All ten crew survived.