List of shipwrecks in October 1942

The list of shipwrecks in October 1942 includes all ships sunk, foundered, grounded, or otherwise lost during October 1942.

1 October
For the sinking of the British cargo ship Siam II on this day, see the entry for 30 September 1942.
 * SS Achilles (1906) (🇳🇱 Netherlands): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 110 nmi south east of Trinidad (9.1°N, -59.8°W) by GS U-202 with the loss of one of her 36 crew.
 * SS Empire Tennyson (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Caribbean Sea (9.45°N, -60.08333°W) by GS U-175 with the loss of four of her 40 crew. Survivors were rescued by USS PG-58 (.
 * JAPANESE AIRCRAFT TRANSPORT Katsuragi Maru : World War II: The aircraft ferry was torpedoed and sunk in the Pacific Ocean west of Bougainville Island, Papua New Guinea (-5.63333°N, 153.13333°W) by USS Sturgeon (SS-187).
 * Lisbon Maru : World War II: The transport ship was torpedoed and damaged 20 mi north of Chushan Island, China (29.95°N, 122.93333°W) by USS Grouper (SS-214) . She was carrying 1,800 British POWs. She sank the next day. 3 guards and 826 POWs were killed. Survivors rescued by a destroyer, Toyokuni Maru, and Chinese Junks.
 * SOVIET SUBMARINE M-118 : World War II: The M-class submarine was sunk off Cape Burnas (45.88333°N, 30.31667°W) by ROMANIAN MINESWEEPER Sublocotenant Ghiculescu and ROMANIAN MINESWEEPER Locotenant-Commandor Stihi Eugen (both ).
 * SS Yomei Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Japan by USS Kingfish (SS-234).

2 October

 * SS Alcoa Transport (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the Caribbean Sea 100 nmi west of Trinidad (9.05°N, -60.16667°W) by GS U-201 with the loss of six of her 36 crew. Survivors were rescued by USS PC-490.
 * SS Aneroid (🇵🇦 Panama): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 130 nmi off Georgetown, British Guiana (8.4°N, -59.2°W) by GS U-175 with the loss of six of her 49 crew. Survivors were rescued by SS Ivan (1914) ( undefined) and SS Olambura (🇭🇳 Honduras).
 * HMS Curacoa  : World War II: The Ceres-class cruiser was rammed, cut in half, and sunk north of Ireland (55.83333°N, -8.63333°W) by RMS Queen Mary (🇬🇧 United Kingdom). Only 26 crew members survived.
 * HMT Lord Stonehaven (FY187) : World War II: The naval trawler was torpedoed and sunk in the English Channel off the Eddystone Lighthouse by GERMAN TORPEDO BOAT S-112 with the loss of all eighteen crew.
 * GS U-512 : World War II: The Type IXC submarine was bombed and sunk in the Atlantic Ocean (6.83333°N, -52.41667°W) by a Douglas B-18 Bolo aircraft of the 99th Bombardment Group, United States Army Air Forces with the loss of 51 of her 52 crew. The survivor was rescued by USS Ellis (DD-154).

3 October
For the sinking of the American tanker Esso Williamsburg on this day, see the entry for 22 September 1942
 * SS Kinkai Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Japan by USS Greenling (SS-213).
 * HMS MGB 78 : World War II: The BPB 72 foot-class motor gunboat was shelled and sunk off The Netherlands by Kriegsmarine surface ships.

4 October

 * SS Caribstar (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off the mouth of the Orinoco River, Venezuela (8.5°N, -59.61667°W) by GS U-175 with the loss of six of her 35 crew. Survivors were rescued by USS PC-469.
 * SS Robert H. Colley (🇺🇸 United States): World War II: Convoy HX 209: The cargo ship broke in two and foundered in the Atlantic Ocean (58.95°N, -26.33333°W) with the loss of 28 of her 61 crew. The stern section remained afloat and was scuttled the next day at 58.73333°N, -24.9°W) by HMS Borage.
 * SS Setsuyo Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Japan by USS Greenling (SS-213).

5 October

 * GS U-582 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south west of Iceland (58.86667°N, -21.7°W) by a Consolidated PBY Catalina aircraft of the United States Navy with the loss of all 46 crew.
 * GS U-619 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south west of Iceland (58.68333°N, -22.96667°W) by a Lockheed Hudson aircraft of 269 Squadron, Royal Air Force with the loss of all 44 crew.
 * SS William A. McKenney (🇺🇸 United States): World War II: The cargo ship was torpedoed, shelled and sunk in the Atlantic Ocean 50 nmi east of Corocoro Island, Venezuela (8.58333°N, -59.33333°W) by GS U-175 with the loss of one of her 35 crew. Survivors were rescued by USS Blakeley (DD-150).

6 October

 * SS Empire Tarpon (🇬🇧 United Kingdom): The cargo ship was in distress in the Atlantic Ocean 500 nmi west of Lewis, Outer Hebrides (57.33333°N, -15.15°W). She was taken in tow but abandoned on 13 October and capsized and sank the next day 20 nmi west of South Uist, Hebrides (57.4°N, -7.75°W).
 * JAPANESE SUBMARINE I-22 : World War II: The Type C1 submarine was depth charged and sunk by a US Navy PBY in the Coral Sea south east of San Cristobal Island (-11.36667°N, 162.33333°W).
 * SS Larry Doheny (🇺🇸 United States): World War II: The tanker was torpedoed and damaged in the Pacific Ocean (42.33333°N, -125.03333°W) off Oregon by JAPANESE SUBMARINE I-25 . 4 gunners and 2 crew were killed. Survivors rescued by USS Coos Bay (AVP-25) . She sank the next day.
 * HMS MGB 76 : World War II: The BPB 72 foot-class motor gun boat was shelled and sunk in the North Sea by Kriegsmarine Schnellboots.
 * HMS MTB 29 : World War II: The BPB 70 foot-class motor torpedo boat was sunk in a collision in the North Sea with a Kriegsmarine Schnellboot.
 * GS U-116 (1940) . World War II: The Type XB submarine last reported by radio from 45°N, -31.5°W. No further trace, lost with all 58 crew.

7 October

 * SS Andalucia Star (🇬🇧 United Kingdom): World War II: The cargo liner was torpedoed and sunk in the Atlantic Ocean off Cape Palmas, Liberia (6.63333°N, -15.76667°W) by GS U-107 (1940) with the loss of four of the 252 people on board. Survivors were rescued by HMS Petunia (K79)
 * MV Boringia (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 130 nmi south west of Cape Town, South Africa by GS U-159 (1941) with the loss of 25 of her 60 crew. Survivors were rescued by SS Matheran and SS Clan Mactavish (1920) (both 🇬🇧 United Kingdom).
 * SS Chickasaw City (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 85 nmi south south west of Cape Town, South Africa (-34.25°N, 17.18333°W) by GS U-172 with the loss of ten of her 49 crew. Survivors were rescued by HMS Rockrose (K51).
 * HMS Caroline Moller (W09) : World War II: Convoy FN 32: The Saint-class tug  was torpedoed and sunk in the North Sea 12 nmi north east of Cromer, Norfolk by GERMAN TORPEDO BOAT S-80  with the loss of three crew.
 * MV Firethorn (🇵🇦 Panama): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 60 nmi north west of Cape Town by GS U-172  with the loss of twelve of her 61 crew. Survivors were rescued by HMS Rockrose (K51)  and HMSAS Springs.
 * HMML 339 : World War II: Convoy FN 32: The Fairmile B motor launch was torpedoed and sunk in the North Sea 12 nmi off Cromer by GERMAN TORPEDO BOAT S-62 (.
 * SS Ilse (1927) (🇬🇧 United Kingdom): World War II: Convoy FN 32: The cargo ship was torpedoed and sunk in the North Sea 12 nmi off Cromer by GERMAN TORPEDO BOAT S-105.
 * SS Jessie Maersk (🇬🇧 United Kingdom): World War II: convoy FN 32: The cargo ship was torpedoed and sunk in the North Sea 12 nmi off Cromer by GERMAN TORPEDO BOAT S-117.
 * SS Milcrest (🇬🇧 United Kingdom): The cargo ship collided in the Atlantic Ocean off Nova Scotia, Canada with SS Empire Lightning (🇬🇧 United Kingdom) and sank.
 * SS Naminoue Maru (🇯🇵 Japan): World War II: The troopship ship was torpedoed and sunk in the Pacific Ocean off Rabaul, Papua New Guinea (-3.23333°N, 150.01667°W) by USS Sculpin (SS-191) . 279 survivors rescued by JAPANESE DESTROYER Takanami.
 * SS Senkai Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Kavieng, New Ireland, Papua New Guinea by USS Amberjack (SS-219).
 * SS Sheafwater (🇬🇧 United Kingdom): World War II: Convoy FN 32: The cargo ship was torpedoed and sunk in the North Sea 12 nmi off Cromer by GERMAN TORPEDO BOAT S-46.

8 October

 * SS City of Athens (1923) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 60 nmi west north west of Cape Town, South Africa (-33.66667°N, 17.05°W) by GS U-179 with the loss of one of the 99 people on board. Survivors were rescued by HMS Active (H14).
 * SS Clan Mactavish (1920) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 100 nmi west south west of Cape Town (-34.88333°N, 16.75°W) by GS U-159 (1941) with the loss of 61 of the 128 people on board, including eight survivors from MV Boringia (🇬🇧 United Kingdom). Survivors were rescued by SS Matheran (🇬🇧 United Kingdom).
 * MV Corbis (🇬🇧 United Kingdom): World War II: The tanker was torpedoed and sunk in the Indian Ocean 500 nmi east south east of Port Elizabeth, South Africa (-34.93333°N, 34.05°W) by GS U-180 with the loss of 50 of her 60 crew. Survivors were rescued by a South African Air Force rescue boat.
 * SS Gaasterkerk (🇳🇱 Netherlands): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 15 nmi west of the Cape of Good Hope, South Africa (-34.33333°N, 18.16667°W) by GS U-68 (1940) . All 64 crew were rescued by HMAS Nizam (G38).
 * SS Glendene (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 300 nmi south west of Freetown, Sierra Leone (4.48333°N, -17.68333°W) by GS U-125 (1940) with the loss of five of her 43 crew. Survivors were rescued by SS Agapenor (🇬🇧 United Kingdom).
 * SS Hague Maru : World War II: The Hague Maru Class Transport was torpedoed and sunk in the Pacific Ocean off the eastern coast of Kyūshū (34.01667°N, 135.1°W) by USS Drum (SS-228) . 5 crewmen killed.
 * SS John Carter Rose (🇺🇸 United States): World War II: The Liberty ship was torpedoed, shelled and sunk in the Caribbean Sea (10.45°N, -45.61667°W) by GS U-201 and GS U-202 (both ) with the loss of eight of her 61 crew. Survivors were rescued by SS Santa Cruz (1921) (🇦🇷 Argentina) and SS West Humhaw (🇺🇸 United States).
 * SS Koumoundouros (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 20 nmi south west of Cape Point, South Africa by GS U-68 (1940) with the loss of five of her 36 crew. Survivors were rescued by HMS Foxhound (H69) and HMAS Nizam (G38).
 * SS Pantelis (🇬🇷 Greece): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 40 nmi south west of Cape Town (-34.33333°N, 17.83333°W) by GS U-172 with the loss of 28 of her 33 crew. Survivors were rescued by HMS Rockrose (K59).
 * R 77, R 78, R 82 and R 86 (all ): World War II: The R boats were sunk in the North Sea (51.03333°N, 1.36667°W).
 * SS Sarthe (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 35 nmi south south west of the Cape of Good Hope (-34.83333°N, 18.66667°W) by GS U-68 (1940) . All 57 crew were rescued by HMSAS Vereeniging.
 * SS Swiftsure (🇺🇸 United States): World War II: The tanker was torpedoed and sunk in the Atlantic Ocean 25 nmi south east of the Cape of Good Hope (-34.66667°N, 18.41667°W) by GS U-68 (1940) . All 33 crew were rescued by a Royal Navy minesweeper.
 * GS U-179 : World War II: The Type IXD2 submarine was depth charged and sunk in the South Atlantic off Cape Town (-33.46667°N, 17.08333°W) by HMS Active (H14) ) with the loss of all 61 crew.
 * SS Varøy (1892) (🇳🇴 Norway): World War II: Convoy FN 33: The cargo ship collided in the North Sea with SS Francis Fladgate (🇬🇧 United Kingdom) and sank at 52.97333°N, 1.47917°W. All 23 crew were rescued by HMML 201.

9 October

 * SS Belgian Fighter (🇧🇪 Belgium): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 75 nmi south of Cape Town, South Africa (-35°N, 18.5°W) by GS U-68 (1940) with the loss of five of her 59 crew. Survivors were rescued by SS John Lykes (🇺🇸 United States) and SS Ocean Justice (🇬🇧 United Kingdom).
 * SS Carolus (Osborne, Graham, 1919) (🇨🇦 Canada): World War II: Convoy NL 9: The cargo ship was torpedoed and sunk in the Gulf of St. Lawrence (48.78333°N, -68.16667°W) by GS U-69 (1940) with the loss of eleven of her 30 crew. Survivors were rescued by HMCS Arrowhead (K145) and HMCS Hepatica (K159) (both ).
 * SS Coloradan (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 200 nmi south west of Cape Town, South Africa (-35.78333°N, 14.56667°W) by GS U-159 (1941) with the loss of six of her 54 crew. Survivors were rescued by HMS Active (H14) ( and a South African fishing vessel.
 * SS Examelia (🇺🇸 United States): World War II: The Design 1022 cargo ship was torpedoed and sunk in the Atlantic Ocean 20 nmi south of the Cape of Good Hope, South Africa (-34.86667°N, 18.5°W) by GS U-68 (1940)) with the loss of eleven of her 51 crew. Survivors were rescued by SS John Lykes (🇺🇸 United States).
 * SS Flensburg (1922) (🇳🇱 Netherlands): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 500 nmi off the coast of Surinam (10.75°N, -46.8°W) by GS U-201 . All 48 crew were rescued by HNLMS Prinses Juliana.
 * SS Hachimanzan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the eastern coast of Kyūshū by USS Drum (SS-228).
 * GERMAN SPERRBRECHER Sperrbrecher 143 Lola : World War II: The sperrbrecher struck a mine and sank in the North Sea off Nieuwpoort, West Flanders, Belgium.
 * SS Oronsay (🇬🇧 United Kingdom: World War II: The ocean liner was torpedoed and sunk in the Atlantic Ocean 800 nmi south west of Monrovia, Liberia by ITALIAN SUBMARINE Archimede with the loss of five lives.
 * SS Pennington Court (🇬🇧 United Kingdom): World War II: Convoy SC 103: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (58.3°N, -27.91667°W) by GS U-254 with the loss of all 45 crew.
 * GS U-171 : World War II: The Type IXC submarine struck a mine and sank in the Bay of Biscay off Lorient, Morbihan, France (47.65°N, -3.56667°W) with the loss of 22 of her 52 crew.

10 October

 * SS Duchess of Atholl (🇬🇧 United Kingdom): World War II: The ocean liner was torpedoed and sunk in the South Atlantic 200 nmi east north east of Ascension Island (-7.05°N, -11.2°W) by GS U-178 with the loss of five of the 832 people on board. Survivors were rescued by HMS Corinthian (F103).
 * HMT Orcades : World War II: The troopship was torpedoed and sunk in the South Atlantic 280 mi north west of Cape Town, South Africa (-35.85°N, 14.66667°W) by U-172 with the loss of 45 of the 1,067 people on board Survivors were rescued by SS Narwik (🇵🇱 Poland).
 * SS Shigure Maru (🇯🇵 Japan): World War II: The transport ship was torpedoed and sunk in the South China Sea off Samarinda, Borneo, Netherlands East Indies (-1.01667°N, 117.36667°W) by USS Seadragon (SS-194).
 * SS Tonan Maru No. 2 : World War II: The Oiler was torpedoed and sunk in shallow water inside Kavieng Harbour, New Ireland, Papua New Guinea by USS Amberjack (SS-219) . She was later salvaged, repaired and returned to service.
 * Komintern : World War II: The Bogatyr-class protected cruiser, previously damaged by airstrikes, was bombed and sunk by the Luftwaffe at Chopi.

11 October

 * SS Agapenor (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean by GS U-87 (1941) with the loss of seven of her 95 crew. The survivors, and all 38 survivors from SS Glendene (🇬🇧 United Kingdom) were rescued by HMS Petunia (K79).
 * SS El Lago (🇵🇦 Panama): World War II: Convoy ONS 136: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (approximately 44°N, -40°W) by GS U-615 with the loss of 57 of her 59 crew. Survivors were rescued by U-615 and made prisoners of war.
 * JAPANESE DESTROYER Fubuki : World War II: Battle of Cape Esperance: The Fubuki-class destroyer was shelled and sunk off Cape Esperance, Guadalcanal by ships of Task Force 64, United States Navy, with the loss of 110 of her 219 crew. Survivors were rescued by USS Hovey (DMS-11), USS McCalla (DD-488) and USS Trever (DMS-16) (all ).
 * JAPANESE CRUISER Furutaka : World War II: Battle of Cape Esperance: The Furutaka-class cruiser was torpedoed, shelled and sunk off Cape Esperance by ships of Task Force 64, United States Navy with the loss of 101 of her 616 crew. Of her 515 survivors, 400 were rescued by JAPANESE DESTROYER Hatsuyuki, JAPANESE DESTROYER Murakumo and JAPANESE DESTROYER Shirayuki (all ). The other 115 survivors were rescued by American ships and taken as prisoners of war.
 * L-16  : World War II: The Leninets-class submarine was torpedoed and sunk in the Pacific Ocean 500 miles west of Seattle, Washington (45.68333°N, -128.93333°W) by JAPANESE SUBMARINE I-25 with the lost with of all 50 hands.
 * SS Laos (1918) (🇫🇷 France): World War II: The cargo ship foundered and sank east of Tiền Hải, French Indochina (20.38333°N, 106.93333°W).
 * Musson : World War II: The naval trawler struck a mine and sank in the Barents Sea 5 nmi off Chernyj Kame Island (73.25°N, 54.28333°W) with the loss of 25 of her 48 crew.
 * SS Una (1904) ( undefined): World War II: The cargo ship was torpedoed and sunk by HMS Unruffled (P46) off Capri, Italy.
 * SS Waterton (🇬🇧 United Kingdom): World War II: Convoy BS 31: The cargo ship was torpedoed and sunk in the Gulf of St Lawrence nort of Cape Breton Island, Nova Scotia, Canada (47.11667°N, -59.9°W) by GS U-106 (1940) . All 27 crew were rescued by HMCS Vison (.

12 October

 * Bringhi (🇪🇬 Egypt): World War II: The sailing ship was machine gunned and damaged in the Mediterranean Sea off Alexandria by GS U-559 . She was beached on a reef and was declared a total loss.
 * USS Duncan (DD-485) : World War II: Battle of Cape Esperance The Gleaves-class destroyer sank in the Pacific Ocean off Savo Island following battle damage inflicted by JAPANESE CRUISER Furutaka with the loss of 81 of her 276 crew.
 * RUSSIAN SUBMARINE Shch-311 : World War II: The Shchuka-class submarine was sunk in the Gulf of Finland by patrol boats VMV 13 and VMV 15 (both ).
 * SS Steel Scientist (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 95 nmi north of Cayenne, French Guiana (5.8°N, -51.83333°W) by GS U-514 with the loss of one of her 47 crew.
 * SS Stornest (🇬🇧 United Kingdom): World War II: Convoy ONS 136: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (54.41667°N, -27.7°W) by GS U-706 with the loss of all 48 crew.
 * GS U-597 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south west of Iceland (56.83333°N, -28.08333°W) by a Consolidated B-24 Liberator aircraft of 120 Squadron, Royal Air Force with the loss of all 49 crew.
 * JAPANESE DESTROYER Natsugumo : World War II: Battle of Cape Esperance: The destroyer was bombed and sunk by US aircraft from Henderson Field, Guadalcanal.
 * JAPANESE DESTROYER Murakumo : World War II: Battle of Cape Esperance: The destroyer was bombed and heavily damaged by US aircraft from Henderson Field, Guadalcanal. Scuttled by destroyer JAPANESE DESTROYER Shirayuki.

13 October

 * SS Ashworth (🇬🇧 United Kingdom): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean 500 nmi east of the Belle Isle Strait (53.08333°N, -44.1°W) by GS U-221 with the loss of all 49 crew.
 * SS Empire Nomad (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off South Africa (-37.83333°N, 18.26667°W) by GS U-159 (1941) with the loss of seven of her 53 crew. Survivors were rescued by MV Elisha Walker (🇵🇦 Panama), HMAS Norman (G49) ( and SS Tynebank (🇬🇧 United Kingdom).
 * SS Fagersten (🇳🇴 Norway): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean 500 nmi east of the Belle Isle Strait (53.08333°N, -44.1°W) by GS U-221 with the loss of nineteen of her 29 crew. Survivors were rescued by HMS Potentilla (K214).
 * JAPANESE SUBMARINE I-30 : World War II: The Type B1 submarine was sunk by a mine 3 miles east of Keppel Harbor, Singapore. 13 crewmen killed, 96 crewmen and her C.O. were rescued.
 * GERMAN TANKER Languste : World War II: The tanker was torpedoed and sunk by a submarine off Capo Figari, Italy.
 * SS Senta (1917) (🇳🇴 Norway): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean 500 nmi east of the Belle Isle Strait (approximately 53°N, -44°W) by GS U-221 with the loss of all 35 crew.

14 October

 * SS Azumasan Maru : World War II: The Azumasan Maru Class Transport was bombed by B-17s from Esperito Santo. She was burned out and beached. Bombed again by B-17s from Esperito Santo on the 15th, slid off the reef and sank 2 miles south east of Bunina Point, Tassafaronga (-9.35°N, 159.86667°W).
 * Caribou ( Newfoundland): World War II: The passenger ferry was torpedoed and sunk in the Cabot Strait by U-69 ( with the loss of 137 of the 252 people on board.
 * GERMAN AUXILIARY CRUISER Komet : World War II: The auxiliary cruiser was torpedoed and sunk in the English Channel off La Hague, Manche, France by MTB 236 with the loss of all hands.
 * SS Kyushu Maru (🇯🇵 Japan): World War II: The Transport was bombed by US aircraft off Tassafaronga. She was burned out and beached. Bombed by B-17s from Eserito Santo on the 15th and sank 2 miles south east of Bunina Point, Tassafaronga (-9.35°N, 159.86667°W).
 * SS Empire Mersey (🇬🇧 United Kingdom): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean south south east of Cape Farewell, Greenland (54°N, -40.25°W) by GS U-618 with the loss of sixteen of her 55 crew. Survivors were rescued by SS Gothland (🇬🇧 United Kingdom)
 * HMS LCM-508, HMS LCM-509, HMS LCM-519, HMS LCM-522, HMS LCM-523, HMS LCM-532, HMS LCM-537, HMS LCM-547 and HMS LCM-620 (all ): World War II: Convoy SC 104: The Landing Craft, Medium were being carried as deck cargo on board SS Southern Empress (🇬🇧 United Kingdom and were lost when that ship was torpedoed and sunk by GS U-211.
 * HMS LCT-2006 : World War II: Convoy SC 104: The Landing Craft, Tank was being carried as deck cargo on board SS Southern Empress (🇬🇧 United Kingdom and was lost when that ship was torpedoed and sunk by GS U-211.
 * SS Nellie (1913) (🇬🇷 Greece): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean (53.68333°N, -41.38333°W) by GS U-607 with the loss of 32 of her 37 crew. Survivors were rescued by SS Gothland (🇬🇧 United Kingdom).
 * MV Nikolina Matkovic ( undefined): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean (53.68333°N, -41.38333°W) by GS U-661 with the loss of fourteen of her 35 crew.
 * SS Sasako Maru (🇯🇵 Japan): World War II: The Transport was bombed by SBD Dauntlesses, P-39s, P-400s, F4F Wildcats, and a PBY of the "Cactus" Air Force from Guadalcanal off Tassafaronga. She was beached and burned out.
 * SS Shchors ( Soviet Union): World War II: The cargo ship struck a mine and was damaged in the Yugor Strait (69.75°N, 60.75°W). She was taken in tow by SOVIET MINESWEEPER T-879 and SOVIET MINESWEEPER T-905 (both ) but foundered at 69.63333°N, 60.15°W). All crew survived.
 * SS Southern Empress (🇬🇧 United Kingdom): World War II: Convoy SC 104: The whale factory ship was torpedoed and sunk in the Atlantic Ocean north east of St. John's, Newfoundland (53.66667°N, -40.66667°W) by GS U-221 with the loss of 48 of her 125 crew. Survivors were rescued by HMS Potentilla (K148).
 * SS Shunko Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Palau by USS Skipjack (SS-184).
 * SS Sumoyoshi Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south west of Kavieng, New Ireland, Papua New Guinea (-3.85°N, 151.35°W) by USS Sculpin (SS-191) . 8 crewmen killed.
 * SS Susana (🇺🇸 United States): World War II: Convoy SC 104: The cargo ship was torpedoed and sunk in the Atlantic Ocean north east of St. John's (53.68333°N, -41.38333°W) by GS U-221 with the loss of 38 of her 59 crew. Survivors were rescued by SS Gothland (🇬🇧 United Kingdom).
 * SS Teison Maru (🇯🇵 Japan): World War II: The troopship was torpedoed and damaged in the Formosa Straits 100 miles off Keun, Formosa (25.33333°N, 121.41667°W) by USS Finback (SS-230) . Whole crew is rescued, without suffering any casualties, by JAPANESE AUXILIARY GUNBOAT Chohukusan Maru . The abandond ship sinks October 17 (25.33333°N, 121.01667°W).
 * SS Takusei Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Japan by USS Greenling (SS-213).

15 October

 * SS Batavier III (1939) (🇩🇪 Germany): World War II: The cargo liner was sunk by a mine off Ålborg, Denmark.
 * USS Meredith (DD-434) : World War II: The Gleaves-class destroyer was torpedoed, bombed and sunk in the Pacific Ocean off Guadalcanal (-11.88333°N, 163.33333°W) by Japanese aircraft with the loss of 180 of her 261 crew. Survivors were rescued by USS Grayson (DD-435), USS Gwin (DD-433), USS Seminole (AT-65) and a Consolidated PBY Catalina aircraft (all ).
 * SS Newton Pine (🇬🇧 United Kingdom): World War II: Convoy ONS 136: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean by GS U-410 with the loss of all 46 crew.
 * GS U-661 : World War II: The Type VIIC submarine was rammed and sunk in the Atlantic Ocean (53.7°N, -35.93333°W) by HMS Viscount (D92) with the loss of all 44 crew.

16 October

 * SS Castle Harbour (🇬🇧 United Kingdom): World War II: Convoy TRIN 19: The coaster was torpeoded and sunk in the Caribbean Sea 50 nmi east north east of Trinidad (11°N, -61.16667°W) by GS U-160 (1941) with the loss of nine of her 23 crew. Survivors were rescued by USS SC-53.
 * MV Polaris (1914) (🇳🇴 Norway): World War II: The seal catcher caught fire and sank in the Hudson Strait, Canada and was abandoned by her sixteen crew. She may have struck a mine.
 * SS Primrose Hill (🇬🇧 United Kingdom): World War II: Convoy ON 139: The cargo ship was torpedoed and sunk in the Atlantic Ocean (18.96667°N, -28.66667°W) by GS U-D5 with the loss of three of her 49 crew. Survivors were rescued by MV Sansu (🇬🇧 United Kingdom).
 * SS Teti (1903) (🇬🇷 Greece): The cargo ship was wrecked off Volos, Greece.
 * MV Trafalgar (1937) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Caribbean Sea 1100 nmi north west of Guadeloupe (25.5°N, -52°W) by GS U-129 (1941) . All 43 crew survived.
 * GS U-353 : World War II: The Type VIIC submarine was depth charged, rammed and sunk in the Atlantic Ocean (53.9°N, -29.5°W) by HMS Fame (H78) with the loss of six of her 45 crew. Survivors were rescued by HNOMS Andenes (K01)  and HMS Fame.

17 October

 * SS Empire Chaucer (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 450 nmi south of Cape Town, South Africa by GS U-504 with the loss off three of the 50 people on board. Survivors were rescued by SS Empire Squire and SS Nebraska (both 🇬🇧 United Kingdom).
 * SS Holland Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Bungo Channel by USS Trigger (SS-237).
 * JAPANESE DESTROYER Oboro : World War II: The Fubuki-class destroyer was bombed and sunk in the Bering Sea 30 miles north east of Kiska, Alaska (52.28333°N, 178.13333°W) by 11th Air Force B-26 Marauders. 16 crewmen and her C.O. were rescued by JAPANESE DESTROYER Hatsuhara.

18 October

 * SS Angelina (1934) (🇺🇸 United States): World War II: Convoy ON 137: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (49.65°N, -30.33333°W) by GS U-618 with the loss of 47 of her 55 crew. Survivors were rescued by SS Bury (🇬🇧 United Kingdom).
 * MV Hai Hing (1929) 🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean (-25.91667°N, 33.16667°W) by GS U-178 ( with the loss of 25 of her 67 crew.
 * SS Hakonesan Maru : World War II: The transport was torpedoed and sunk in the Pacific Ocean 15 miles east of Horamachi-shi, Fukushima Prefecture, Japan (37.58333°N, 141.5°W) by USS Greenling (SS-213) . 14 crewmen killed.
 * SS Libau (1920) (🇩🇪 Germany): World War II: The cargo ship was torpedoed and sunk off Vilnesfjord, Norway by HNOMS Uredd (P-41).
 * SS Trekieve 🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean by GS U-176.

19 October
For the loss of USS O'Brien on this day, see the entry for 15 September 1942.
 * SS Nordland (1898) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in Saltfjorden (67.2°N, 12.95°W) by FRENCH SUBMARINE Junon with the loss of seventeen of the 22 people on board.
 * MV Rothley (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 300 nmi east of Barbados (13.56667°N, -54.56667°W) by GS U-332 with the loss of two of her 40 crew.
 * SS Steel Navigator (🇺🇸 United States): World War II: Convoy on 137: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (49.75°N, -31.33333°W) by GS U-610 with the loss of 36 of her 52 crew. Survivors were rescued by HMS Decoy (H75).

20 October

 * SS Africa Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the South China Sea west of Formosa (24.43333°N, 120.41667°W by USS Finback (SS-230).
 * Mahrous ( Syria): World War II: The sailing ship was shelled and sunk in the Mediterranean Sea 30 nmi north west of Saida, Lebanon by GS U-77 (1940) . All crew survived.
 * SS Ryunan Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the eastern coast of Kyūshū by USS Drum (SS-228).
 * SS Yamafuji Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the South China Sea west of Formosa (24.43333°N, 120.41667°W by USS Finback (SS-230).
 * GS U-216 : World War II: The Type VIID submarine was depth charged and sunk in the Atlantic Ocean south west of Ireland (48.35°N, -19.41667°W) by a Consolidated B-24 Liberator aircraft of 224 Squadron, Royal Air Force with the loss of all 45 crew.

21 October

 * SS Choko Maru (🇯🇵 Japan): World War II: The transport ship was torpedoed and sunk in the Pacific Ocean west north west of Rabaul, Papua New Guinea (-3.5°N, 150.5°W) by USS Gudgeon (SS-211).
 * SS Nichiho Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the East China Sea, north of Formosa (27.05°N, 122.7°W) by USS Guardfish (SS-217).
 * Palatia : World War II: The prisoner transport ship was sunk by a Hampden torpedo bomber of 489 Squadron, RNZAF, off Lindesnes in southern Norway (57.96833°N, 7.23333°W) with the loss of 986 of the 1,034 people on board.
 * SOVIET SUBMARINE S 7 : World War II: The S-class submarine was torpedoed and sunk in the Baltic Sea (59.85°N, 19.53333°W) by submarine Vesihiisi with the loss of 44 of her 48 crew. The survivors were taken as prisoners of war.

22 October

 * MV Donax (🇬🇧 United Kingdom): World War II: Convoy ON 139: The tanker was torpedoed and damaged in the Atlantic Ocean (49.85°N, -27.96667°W) by GS U-443 . She was taken in tow by HMS Marauder (W98) and HMS Nimble (W123) (both ) but foundered on 29 October at 48.06667°N, -24.68333°W. All 63 crew were rescued by HMCS Drumheller (K167), HMS Nimble and a Royal Navy destroyer.
 * SS Ocean Vintage (🇬🇧 United Kingdom): World War II: The Ocean ship was torpedoed and sunk in the Indian Ocean (21.61667°N, 60.1°W) by JAPANESE SUBMARINE I-27.
 * MV Remmaren (🇸🇪 Sweden): World War II: The cargo ship struck a mine and sank off the coast of Norway. All 47 crew were rescued.
 * GS U-412 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north east of the Faroe Islands (63.91667°N, 0.4°W) by a Vickers Wellington aircraft of 179 Squadron, Royal Air Force.
 * SS Winnipeg II (🇬🇧 United Kingdom): World War II: Convoy ON 139: The passenger ship was torpedoed and sunk in the Atlantic Ocean (49.85°N, -27.96667°W) by GS U-443 . All 192 people on board were rescued by HMCS Morden (K170).

23 October

 * SS City of Johannesburg (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean south east of East London, South Africa by GS U-504 with the loss of two of her 89 crew. Survivors were rescued by SS Fort George, SS King Edward (1919) (both 🇬🇧 United Kingdom) and SS Zypenburg (🇳🇱 Netherlands).
 * MV Empire Star (1935) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (48.23333°N, -26.36667°W) by GS U-615 with the loss of 42 of the 103 people on board. Survivors were rescued by HMS Black Swan (L57).
 * SS Empire Turnstone (🇬🇧 United Kingdom): World War II: Convoy ONS 136: The cargo ship straggled behind the convoy. She was torpedoed and sunk in the Atlantic Ocean (54.66667°N, -28°W) by GS U-621 with the loss of all 46 crew.
 * HMS Phoebe (43) : World War II: The Dido-class cruiser was torpedoed and damaged in the Atlantic Ocean 6 nmi west of Pointe Noire, French Equatorial Africa by GS U-161 (1941) . She was beached at Pointe Noire. Later salvaged, repaired and returned to service in August 1943.
 * SS Reuben Tipton (🇺🇸 United States): World War II: The Type C2-S-AJ1 cargo ship was torpedoed and sunk in the Atlantic Ocean 400 nmi north east of Trinidad (14.55°N, -54.85°W) by GS U-129 (1941) with the loss of three of her 54 crew. Survivors were rescued by a Martin PBM Mariner aircraft of the United States Navy and a Motor Torpedo Boat of the Royal Navy.
 * SS Seiko Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off the coast of Japan by USS Kingfish (SS-234).

24 October
For the foundering of the Norwegian cargo ship SS Vestland on this day, see the entry for 15 January 1942.
 * SS Holmpark (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 900 nmi east of Barbados (13.18333°N, -47°W) by GS U-516 with the loss of one of her 50 crew.
 * Jon Olafsson (Light Blue Flag of Iceland.svg Iceland): World War II: The trawler was torpedoed and sunk in the Atlantic Ocean by GS U-383 ( with the loss of all thirteen crew.
 * GS U-599 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north east of the Azores, Portugal (46.11667°N, -17.66667°W) by a Consolidated B-24 Liberator of 224 Squadron, Royal Air Force with the loss of all 44 crew.

25 October

 * MV Primero (1925) (🇳🇴 Norway): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean (13.63333°N, -53.91667°W) by GS U-67 (1940) with the loss of two of her 33 crew.
 * USS Seminole (AT-65) : World War II: The Navajo-class fleet tug was shelled and sunk in the Pacific Ocean off Tulagi, Solomon Islands by JAPANESE DESTROYER Akatsuki, JAPANESE DESTROYER Ikazuchi and JAPANESE DESTROYER Shiratsuyu (all ) with the loss of one of her 80 crew.
 * USS YP-284 : The patrol boat was shelled and sunk in the Pacific Ocean off Tulagi by JAPANESE DESTROYER Akatsuki, JAPANESE DESTROYER Ikazuchi and JAPANESE DESTROYER Shiratsuyu (all ).
 * JAPANESE CRUISER Yura : World War II: The Nagara-class cruiser was bombed, torpedoed and damaged in the Indispensable Strait off Guadalcanal by Bell P-39 Airacobra, Boeing B-17 Flying Fortress and Douglas SBD Dauntless aircraft of the United States Army Air Forces, United States Marine Corps and United States Navy. Her crew was taken off and she was scuttled by JAPANESE DESTROYER Harusame and JAPANESE DESTROYER Yudachi (both ) at -8.25°N, 159.11667°W.

26 October

 * MV Anglo Mærsk (🇬🇧 United Kingdom): World War II: Convoy SL 125: The tanker straggled behind the convoy. She was torpedoed and damaged in the Atlantic Ocean south west of the Canary Islands, Spain (27.83333°N, -22.25°W) by GS U-509 . She was torpedoed and sunk the next day at 27.25°N, -17.91667°W by GS U-604 . All 35 crew survived.
 * SS Anne Hutchinson (🇬🇧 United Kingdom): World War II: The Liberty ship was torpedoed and damaged in the Indian Ocean 60 nmi east of East London, South Africa (-33.16667°N, 28.5°W) by GS U-504 with the loss of three of her 57 crew. Survivors were rescued by SS Steel Mariner (🇺🇸 United States) and a South African fishing vessel. An attempt was made to tow Anne Hutchinson by HMSAS David Haigh . She was later split in two by explosive charges, with the stern section sinking. The bow section was towed to Port Elizabeth by HMSAS David Haigh where the ship was declared a total loss.
 * MV Arca undefined): World War II: The cargo ship was torpedoed and sunk in the Aegean Sea 9 nmi south of Chios, Greece by HMS Taku (N38).
 * SS Betty H. (🇫🇮 Finland): World War II: Continuation War: The cargo ship was torpedoed and sunk by SOVIET SUBMARINE ShCh-307 south of Mariehamn, Åland  59.9°N, 19.75°W).
 * USS Hornet (CV-8) : World War II: Battle of Santa Cruz Islands: The Yorktown-class aircraft carrier was heavily damaged by Japanese dive bombers and torpedo planes with the loss of 140 of her 2,919 crew. Scuttled at 0135 on the 27th by JAPANESE DESTROYER Makigumo and JAPANESE DESTROYER Akigumo (both -8.63333°N, 166.71667°W).
 * USS Porter (DD-356) : World War II: Battle of the Santa Cruz Islands: The Porter-class destroyer was torpedoed and damaged by torpedo from a crashed US Navy TBF in the Pacific Ocean north east of Guadalcanal, Solomon Islands . She was subsequently scuttled by USS Shaw (DD-373) due to damage received.
 * SS President Coolidge (🇺🇸 United States): World War II: The ocean liner-troopship struck a mine in the Pacific Ocean off Espiritu Santo, Vanuatu and sank. All 5,340 people on board were rescued.

27 October

 * SS Gurney E. Newlin (🇺🇸 United States): World War II: Convoy HX 212: The cargo ship straggled behind the convoy. She was torpedoed and damaged in the Atlantic Ocean (54.85°N, -30.1°W) by GS U-436 with the loss of three of her 59 crew. Survivors abandoned ship and were rescued by SS Bic Island (🇨🇦 Canada) and HMCS Alberni (K103) . Gurney E. Newlin was torpedoed and sunk the next day by GS U-606.
 * SS Hokuango Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the South China Sea off Indochina by USS Tautog (SS-199).
 * HMS LCT-2281 : World War II: The Mk. V Landing Craft Tank was being carried on board SS Sourabaya (🇬🇧 United Kingdom) and was lost when that ship was torpedoed and sunk by GS U-436.
 * SS Pacific Star (🇬🇧 United Kingdom): World War II: Convoy SL 125: The refrigerated cargo ship was torpedoed and damaged in the Atlantic Ocean (29.25°N, -20.95°W) by GS U-509 . She was abandoned the next day at 29.35°N, -19.46667°W but did not sink until at least 30 October. All 96 crew survived.
 * SS Sourabaya (🇬🇧 United Kingdom): World War II: Convoy HX 212: The whale factory ship was torpedoed and sunk in the Atlantic Ocean (54.53333°N, -31.03333°W) by GS U-436 with the loss of 77 of the 154 people on board. Survivors were rescued by SS Bic Island (🇨🇦 Canada), HMCS Alberni (K103) and HMCS Ville de Quebec (K242) (both ).
 * MV Stentor (🇬🇧 United Kingdom): World War II: Convoy SL 125: The cargo liner was torpedoed and sunk in the Atlantic Ocean (29.21667°N, -20.88333°W) by GS U-509 with the loss of 44 of the 246 people on board. Survivors were rescued by HMS Woodruff (K53).
 * GS U-627 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean south of Iceland (59.23333°N, -22.81667°W) by a Boeing B-17 Flying Fortress aircraft of 206 Squadron, Royal Air Force with the loss of all 44 crew.

28 October

 * SS Bengt Sture (🇸🇪 Sweden): World War II: The ore carrier was torpedoed and sunk in the Baltic Sea by Shch-406 . Four survivors were rescued by Shch-406 and sent to Leningrad but never heard of again.
 * SS Butia (🇧🇷 Brazil): World War II: The cargo ship ran aground and was wrecked off Piauí.
 * MV Hopecastle (🇬🇧 United Kingdom): World War II: Convoy SL 125: The cargo ship straggled behind the convoy. She was torpedoed and damaged in the Atlantic Ocean north west of the Canary Islands, Spain (31.65°N, -19.38333°W) by GS U-509 . She was torpedoed, shelled and sunk the next day at 31.5°N, -19.58333°W by GS U-203) with the loss of five of her 45 crew. Survivors were rescued by SS Mano (🇬🇧 United Kingdom) or reached land in their lifeboat.
 * SS Kosmos II (🇳🇴 Norway): World War II: Convoy HX 212: The factory ship was torpedoed and damaged in the Atlantic Ocean (55.25°N, -28.16667°W) by GS U-606 on the 28th. She was then torpedoed and sunk by GS U-624  with the loss of 33 of the 133 people on board on the 29th. Survivors were rescued by SS Barrwhin (🇬🇧 United Kingdom) and HMCS Kenogami (K125).
 * HMS LCT-2190, HMS LCT-2192 and HMS LCT-2284 (all ): World War II: The Landing Craft, Tanks were being carried as deck cargo on board SS Kosmos II (🇳🇴 Norway) and were lost when that ship was sunk by enemy action.
 * SS Nagpore (🇬🇧 United Kingdom): World War II: Convoy SL 125: The cargo ship was torpedoed and sunk in the Atlantic Ocean north west of the Canary Islands, Spain (31.5°N, 147.16667°W) by GS U-509 with the loss of twenty of her 73 crew. Survivors were rescued by HMS Crocus (K49) ( or reached land in their lifeboats.

29 October

 * MV Abosso (🇬🇧 United Kingdom: World War II: The Elder Dempster 11,330 tons passenger ship was torpedoed, whilst unescorted, and sunk in the Atlantic Ocean 700 nmi north west of the Azores, Portugal (48.5°N, -28.83333°W) by GS U-575 with the loss of 362 of the 393 people on board. She was en route from Cape Town to Liverpool. The 31 survivors were rescued by HMS Bideford (L43).
 * SS Barrwhin (🇬🇧 United Kingdom): World War II: Convoy HX 212: The cargo ship was torpedoed and sunk in the Atlantic Ocean (55.03333°N, -22.75°W) by GS U-436 with the loss of 24 of the 114 people on board. Survivors were rescued by HMCS Kenogami (K125).
 * SS Bic Island: (🇨🇦 Canada): World War II: Convoy HX 212: The cargo ship straggled behind the convoy due to rescuing survivors from the sinking of SS Gurney E. Newlin (🇺🇸 United States) and SS Sourabaya (🇬🇧 United Kingdom). She was torpedoed and sunk in the Atlantic Ocean (55.08333°N, -23.45°W) by GS U-224 with the loss of all 165 people on board.
 * SS Corinaldo (🇬🇧 United Kingdom): World War II: Convoy SL 125: The cargo ship straggled behind the convoy. She was torpedoed and damaged in the Atlantic Ocean (33.33333°N, -18.2°W by GS U-503 with the loss of eight of her 58 crew. She was abandoned by the survivors, who were rescued by HMS Cowslip (K196) . Corinaldo was torpedoed, shelled and sunk the next day by GS U-203.
 * SS Laplace (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic south east of Cape Agulhas, South Africa (-40.58333°N, 21.58333°W) by GS U-159 (1941) . All 63 people on board were rescued by SS George Gale (🇺🇸 United States), SS Porto Alegre (🇧🇷 Brazil) or a South African Air Force rescue boat.
 * SS Luisiano ( undefined): World War II: The tanker was torpedoed and sunk by Royal Air Force aircraft off Navarino, Greece.
 * SS Pan-New York (🇺🇸 United States): World War II: Convoy HX 212: The tanker was torpedoed and damaged in the Atlantic Ocean (54.96667°N, -23.93333°W) by GS U-624 with the loss of 43 of her 57 crew. Survivors were rescued by HMCS Rosthern (K169) and HMCS Summerside (K141) (both ), which scuttled the ship.
 * MV Ross (1936) (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic 370 nmi south east of Cape Agulhas by GS U-159 (1941) with the loss of one of her 40 crew. Survivors were rescued by HMS Rockrose (H51).

30 October

 * SS Baron Vernon ( UK): World War II: Convoy SL 125: The cargo ship was torpedoed and sunk in the Atlantic Ocean north of Madeira, Portugal (36.1°N, -16.98333°W) by GS U-604 . All 49 crew were rescued by SS Baron Elgin ( UK).
 * MV Brittany (1928) ( UK): World War II: Convoy SL 125: The refrigerated cargo ship was torpedoed and sunk in the Atlantic Ocean off Madeira (33.48333°N, -18.53333°W by GS U-509) with the loss of fourteen of the 57 people on board. Survivors were rescued by HMS Kelantan (F166).
 * MV Bullmouth ( UK): World War II: Convoy SL 125: The tanker was torpedoed and damaged in the Atlantic Ocean by GS U-409 . She consequently straggled behind the convoy and was torpedoed and sunk at 33.33333°N, -18.41667°W by GS U-659 with the loss of 50 of her 56 crew.
 * MV Président Doumer ( UK): World War II: Convoy SL 125: The troopship was torpedoed and sunk in the Atlantic Ocean north east of Madeira (35.13333°N, -16.73333°W) by GS U-604 with the loss of 260 of the 345 people on board. Survivors were rescued by SS Alaska (1918) (🇳🇴 Norway) and HMS Cowslip (K196).
 * MV Silverwillow ( UK): World War II: Convoy SL 125: The cargo ship was torpedoed and damaged in the Atlantic Ocean (35.13333°N, -16.73333°W) by GS U-408 with the loss of six of the 67 people on board. She was abandoned on 5 November at 34.11667°N, -14.65°W. Survivors were rescued by HMS Kelantan (F166) . Silverwillow foundered on 6 November at 37.4°N, -10.75°W.
 * MV Tasmania (1935) ( UK): World War II: Convoy SL 125: The cargo ship was torpedoed and damaged in the Atlantic Ocean by GS U-659 . She was torpedoed and sunk the next day (36.1°N, -16.98333°W) by GS U-103 (1940) with the loss of two of her 46 crew. Survivors were rescued by SS Alaska (1918) (🇳🇴 Norway) and SS Baron Elgin ( UK).
 * GS U-520 : World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean (47.78333°N, -49.83333°W) by a Douglas Digby aircraft of 10 Squadron, Royal Canadian Air Force with the loss of all 53 crew.
 * GS U-559 : World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea (32.5°N, 33°W) by HMS Dulverton (L63), HMS Hero (H99), HMS Hurworth (L28), HMS Pakenham (G06) and HMS Petard (G56) (all ) with the loss of seven of her 45 crew.
 * GS U-658 : World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (50.53333°N, -46.53333°W) by a Lockheed Hudson aircraft of 145 Squadron, Royal Canadian Air Force with the loss of all 48 crew.
 * SS West Kebar (🇺🇸 United States): World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean 350 nmi north east of Barbados (14.95°N, -53.61667°W) by GS U-129 (1941) with the loss of three of her 57 crew. Survivors were rescued by MV Campero (🇪🇸 Spain), a Royal Navy patrol boat or reached land in their lifeboats.

31 October

 * MV Aldington Court (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic west of Port Nolloth, South West Africa (-30.33333°N, -2.16667°W) by GS U-172 with the loss of 33 of her 44 crew. One crew member was taken on board U-172 as a prisoner of war, the rest of them were rescued by SS City of Christiana (🇬🇧 United Kingdom).
 * SS Empire Guidon (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean 180 nmi east south east of Durban, South Africa (-30.8°N, 34.18333°W) by GS U-504 with the loss of five of the 57 people on board. Survivors were rescued by SS Clan Alpine (1918) (🇬🇧 United Kingdom).
 * HMS MTB 87 : World War II: The Vosper 72 foot-class motor torpedo boat was sunk by a mine in the North Sea.
 * SS Marylyn (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the South Atlantic (-0.76667°N, -32.7°W) by GS U-174 with the loss of fifteen of her 42 crew. Survivors were rescued by SS Ettrickbank and SS Pundit (both 🇬🇧 United Kingdom).
 * SS Reynolds (🇬🇧 United Kingdom): World War II: The cargo ship was torpedoed and sunk in the Indian Ocean 210 nmi east of Durban (-30.03333°N, 35.03333°W) by GS U-504 with the loss of all 47 crew.
 * USS YP-345 : The Yard Patrol Boat sank in the Pacific Ocean off Midway.

Unknown date

 * JAPANESE TRANSPORT Nojima Maru : World War II: The Transport (A.K.A. Nozuma Maru) was damaged in a series of air attacks between mid September and early October 1942, being beached sometime between the 1st and 9th of October in Trout Lagoon, Kiska, Alaska. Her crew abandoned her on October 13th. She was bombed and burned out on April 20, 1943. Stern of the ship sank under tow to be scrapped post War, bow remains beached.
 * SOVIET SUBMARINE Shch-213 : World War II: The Shchuka-class submarine struck a mine and sank off Constanţa, Romania with the loss of all hands sometime in October. Originally thought to have been sunk on the 14th by a German Sub Chaser.
 * SOVIET SUBMARINE Shch-302 : World War II: The Shchuka-class submarine was either bombed and sunk in the Gulf of Finland by Finnish Air Force aircraft or struck a mine and sank between 11 and 14 October with the loss of all hands.
 * SOVIET SUBMARINE Shch-308 : World War II: The Shchuka-class submarine was lost in the Baltic Sea. Possibly sunk by FINNISH SUBMARINE Iku-Turso in the Sodra-Kvarken Channel on the 26th.
 * SOVIET SUBMARINE Shch-320 : World War II: The Shchuka-class submarine sunk in the Baltic Sea.
 * HMS Unique (N95) : World War II: The U-class submarine was lost between 9 and 24 October between Land's End and Gibraltar with the loss of all 34 crew.