# List of shipwrecks in September 1943

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

## 1 September

List of shipwrecks: 1 September 1943 :
| Ship | State | Description |
| Fusei Maru | Japan | World War II: Convoy No. 297: The cargo ship (2,256 t) was torpedoed and damaged one hour before midnight by USS Seawolf ( United States Navy). Her captain ordered "abandon ship" at midnight. 11 crew were killed. The empty ship was shelled and sunk in the South China Sea off Formosa (31°16′N 127°14′E﻿ / ﻿31.267°N 127.233°E﻿ / 31.267; 127.233) by Seawolf three hours later, in the early hours of 2 September. |
| Haryu Maru | Japan | The cargo ship lost power 100 miles (160 km) east north east off Dairen, Manchuria. She collided with another vessel and subsequently drifted aground near Dawangjia Dao Island, China, south of the Yalu River the next day. The vessel was later declared a total loss. Her Italian commanding officer was rescued on 9 September. |
| I-182 | Imperial Japanese Navy | World War II: The Kaidai-class submarine was depth charged and sunk in the Coral Sea off Espiritu Santo (15°38′S 166°57′E﻿ / ﻿15.633°S 166.950°E﻿ / -15.633; 166.950) by USS Wadsworth ( United States Navy). All 101 crew were killed. |
| HMS LCS(L) 201 | Royal Navy | The LCS-1-class landing craft support (20/25 t, 1943) sank in the English Channel off Hastings (50°52′N 0°44′E﻿ / ﻿50.867°N 0.733°E﻿ / 50.867; 0.733) after a collision with LCS-202 ( Royal Navy). There were no casualties. |
| Nankai Maru | Japan | World War II: The coaster was torpedoed and sunk in the Pacific Ocean off the coast of Japan by USS Pompano ( United States Navy). |
| Strassburg | Germany | World War II: The hospital ship (17,001 GRT, 1930) struck a mine in the North Sea off Egmond aan Zee, North Holland, Netherlands and was beached (52°29′18″N 4°32′23″E﻿ / ﻿52.48833°N 4.53972°E﻿ / 52.48833; 4.53972). The ship was torpedoed by aircraft of 236 and 254 Squadrons, Royal Air Force on 20 September and also by HMMTB 617 ( Royal Navy). She was declared a total loss. |
| V 5502 | Kriegsmarine | The Vorpostenboot, a former Trygg-class torpedo boat, ran aground on the Norwegian coast. She sank on 6 September during salvage operations. |

## 2 September

List of shipwrecks: 2 September 1943 :
| Ship | State | Description |
| Hankow Maru | Imperial Japanese Army | World War II: Convoy Wewak No. 7: The Shanghai Maru-class auxiliary transport (4,104 t) was bombed and sunk at Wewak, New Guinea (3°3′S 121°30′E﻿ / ﻿3.050°S 121.500°E﻿ / -3.050; 121.500) by North American B-25 Mitchell and Lockheed P-38 Lightning aircraft of the United States Army Air Force. Twenty-three troops and two crew were killed. |
| HMS LCI(L) 107 | Royal Navy | The landing craft infantry (large) (194/384 t, 1942) was driven ashore in bad weather at Reggio, Italy, and was written off as a total loss.$^{:253}$ |
| Mutsure | Imperial Japanese Navy | World War II: The Etorofu-class escort ship was torpedoed and sunk in the Pacific Ocean off Guam (08°40′N 151°31′E﻿ / ﻿8.667°N 151.517°E﻿ / 8.667; 151.517) by USS Snapper ( United States Navy). Forty-six crew were killed. |
| Nagato Maru | Imperial Japanese Army | World War II: Convoy Wewak No. 7: The Daifuku Maru No. 1-class transport (5,901 t) was bombed and sunk at Wewak (3°35′S 143°39′E﻿ / ﻿3.583°S 143.650°E﻿ / -3.583; 143.650) by North American B-25 Mitchell and Lockheed P-38 Lightning aircraft of the United States Army Air Force. Three troops and two crew were killed. |
| Svea Reuter | Sweden | World War II: The cargo ship, chartered by the Kriegsmarine, was torpedoed in the Riga Bay by Soviet Ilyushin Il-4 aircraft. Six crew were killed. She was towed to Riga and repaired. |
| Versilia | Italy | World War II: The cargo ship (591 GRT) was torpedoed and sunk in the Aegean Sea off Patmos Island, Greece, by HMS Torbay ( Royal Navy). There were 10 dead and 7 survivors. |

## 3 September

List of shipwrecks: 3 September 1943 :
| Ship | State | Description |
| Akama Maru | Japan | World War II: The cargo ship (5,600 t) was torpedoed and sunk in the Pacific Ocean off the coast of Japan (41°00′N 144°34′E﻿ / ﻿41.000°N 144.567°E﻿ / 41.000; 144.567) by USS Pompano ( United States Navy). Ten crew were killed. |
| I-20 | Imperial Japanese Navy | World War II: The Type C submarine (or possibly I-182) was depth charged and sunk in the Coral Sea off Espiritu Santo (13°10′S 165°28′E﻿ / ﻿13.167°S 165.467°E﻿ / -13.167; 165.467) by USS Ellet ( United States Navy) with all 101 hands. |
| Tagonoura Maru | Imperial Japanese Navy | World War II: Convoy 4827: The Koto Maru No. 2 Go-class auxiliary collier/oiler (3,521 t) was torpedoed and sunk in the Pacific Ocean about 32 nautical miles (59 km; 37 mi) south east of Miyake-Jima, Izu Shoto (33°43′N 143°00′E﻿ / ﻿33.717°N 143.000°E﻿ / 33.717; 143.000) by USS Pollack ( United States Navy). Six wounded or sick naval soldiers who were passengers and one crewman were killed. 149 survivors were rescued by Oki ( Imperial Japanese Navy). |
| UJ 1202 Frank Dankworh name= | Kriegsmarine | World War II: The submarine chaser was torpedoed and sunk by S-51 ( Soviet Navy) off Finnmark, Norway. |

## 4 September

List of shipwrecks: 4 September 1943 :
| Ship | State | Description |
| Heijo Maru | Imperial Japanese Navy | World War II: The Standard Peacetime Type C cargo ship/Heijo Maru-class auxiliary gunboat (2,627 t) was torpedoed and sunk in the Pacific Ocean off Kwajalein (5°25′N 156°37′E﻿ / ﻿5.417°N 156.617°E﻿ / 5.417; 156.617) by USS Albacore ( United States Navy). Three crewmen were killed. |
| Kozan Maru | Imperial Japanese Army | World War II: The Shinshu Maru-class transport ship (4,180 t) was torpedoed in the South China Sea 90 kilometres (56 mi) south west of Takao, Formosa (22°22′N 120°04′E﻿ / ﻿22.367°N 120.067°E﻿ / 22.367; 120.067) by USS Sunfish ( United States Navy). Thirteen passengers and 9 crew were killed. On 5 September the gunboat Chohakusan Maru ( Imperial Japanese Navy) tried to tow the damaged ship but flooding was increasing so Kozan Maru was run aground and abandoned at 22°06′N 119°50′E﻿ / ﻿22.100°N 119.833°E﻿ / 22.100; 119.833. |
| USS LCI(L)-339 | United States Navy | World War II: The landing craft infantry (large) was sunk by Japanese aircraft off Lae, New Guinea. One crew was killed. |
| HMS LCP(L) 325 | Royal Navy | The landing craft, personnel (large) (6/8 t, 1941) was lost on this date. |
| Yurin Maru | Japan | World War II: The sailing vessel was sunk in the Pacific Ocean by USS Tarpon ( United States Navy). |
| Yusho Maru | Imperial Japanese Navy | World War II: The Yusho Maru-class salvage ship (a.k.a. Yusyo Maru) struck a mine in Surabaya's North Channel and was taken under tow. She struck a second mine and sank in the Makassar Strait (05°00′S 119°00′E﻿ / ﻿5.000°S 119.000°E﻿ / -5.000; 119.000) on 5 September. Refloated on 12 July 1944 and towed to Surabaya, never repaired, and possibly scrapped. |

## 5 September

List of shipwrecks: 5 September 1943 :
| Ship | State | Description |
| Cremer | Netherlands | The cargo liner (4,608 GRT, 1926) ran aground and was wrecked on either St. Bees Island, or Whitsunday Island, Australia, and was abandoned as a total loss. |
| F 421 | Kriegsmarine | World War II: The Type C Marinefahrprahm was sunk by a mine off Gaeta, Italy. There were 15 dead and missing and 17 survivors. |
| F 481 | Kriegsmarine | World War II: The Type C2 Marinefahrprahm was sunk by a mine off Gaeta, Italy. There were 19 dead and missing and 13 wounded. |
| F 624 | Kriegsmarine | World War II: The Type C2 Marinefahrprahm was thrown onto the beach of Pizzo, Italy in a storm and was damaged beyond repair. |
| HMS ML 108 | Royal Navy | World War II: The Fairmile A motor launch (57/66 t, 1940) was sunk by a mine in the English Channel. The whole crew was saved. |
| No. 13 | Soviet Navy | The R Type minesweeper was lost on this date. |
| R-12 | Kriegsmarine | World War II: The Type R-2 minesweeper was sunk by a mine off Piran. |
| Tenkai Maru | Imperial Japanese Army | World War II: Convoy Wewak No. 8: The Tenkai Maru-class auxiliary transport ship (3,203 t) was torpedoed and sunk in the Pacific Ocean (01°10′N 142°10′E﻿ / ﻿1.167°N 142.167°E﻿ / 1.167; 142.167) by USS Swordfish ( United States Navy). Three troops and three (or four) crew were killed. |
| Urlana | United Kingdom | The cargo ship ran aground in Loch Bracadale. She was on a voyage from Buenos Aires, Argentina to London. Shen was a total loss. |
| USS YP-279 | United States Navy | The naval trawler sank in heavy weather off Townsville, Queensland, Australia. |

## 6 September

List of shipwrecks: 6 September 1943 :
| Ship | State | Description |
| Angiolina P | Italy | World War II: The fishing vessel was sunk at Aléria, Corsica by gunfire from HMS Sportsman ( Royal Navy) |
| Annan Maru | Imperial Japanese Army | World War II: The Annan Maru-class auxiliary transport (2,941 t) was bombed and sunk in the Indian Ocean south of Rangoon, Burma by Consolidated B-24 Liberator aircraft of the United States Tenth Air Force. Two crew were killed. |
| Kofuku Maru | Imperial Japanese Navy | The Kofuku Maru-class auxiliary transport ship (3,209 t) was sunk in a collision with Maoka Maru ( Japan) in the Sea of Japan 20 nautical miles (37 km) south of Sado Island (37°42′N 138°17′E﻿ / ﻿37.700°N 138.283°E﻿ / 37.700; 138.283). Her whole crew was rescued by Maoka Maru. |
| Maria Luisa B | Italy | World War II: The fishing vessel was sunk in Aléria, Corsica by gunfire from HMS Sportsman ( Royal Navy) |
| Milan Maru | Imperial Japanese Army | World War II: The Yoshida Maru No. 1-class auxiliary transport was bombed and sunk in the Indian Ocean south of Rangoon, Burma (16°46′N 96°10′E﻿ / ﻿16.767°N 96.167°E﻿ / 16.767; 96.167) by Consolidated B-24 Liberator aircraft of the United States Tenth Air Force. Eight crew and 121 troops were killed. |
| MO-110 | Soviet Navy | World War II: The MO-2-class patrol vessel was sunk by a mine in the Gulf of Finland. 17 crew were killed. There were 4 survivors. |
| HMS Puckeridge | Royal Navy | World War II: The Hunt-class destroyer (1,050/1,430 t, 1941) was torpedoed and sunk in the Mediterranean Sea 40 nautical miles (74 km) east of Europa Point, Gibraltar by U-617 ( Kriegsmarine) with the loss of 62 of her 191 crew. |
| R 94 | Kriegsmarine | World War II: The minesweeper struck a mine and sank in the English Channel. |
| Sellindge | United Kingdom | World War II: The cargo ship struck a mine and sank off Malta. |
| Shogen Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Hokkaido (42°13′N 142°00′E﻿ / ﻿42.217°N 142.000°E﻿ / 42.217; 142.000) by USS Halibut ( United States Navy). Survivors were rescued by Kiku Maru ( Imperial Japanese Navy). |
| Tbilisi | Soviet Union | World War II: The cargo ship (7,169 t) struck a mine laid by U-636 ( Kriegsmarine) and sank in the Kara Sea (72°22′04″N 80°33′01″E﻿ / ﻿72.36778°N 80.55028°E﻿ / 72.36778; 80.55028) with the loss of one crew and one passenger. 43 crew survived, 6 of them badly wounded. |

## 7 September

List of shipwrecks: 7 September 1943 :
| Ship | State | Description |
| Hamidieh | Egypt | World War II: The sailing ship was shelled and sunk in the Mediterranean Sea 34 nautical miles (63 km) south of Cape Gata, Cyprus (34°02′N 33°05′E﻿ / ﻿34.033°N 33.083°E﻿ / 34.033; 33.083) by U-596 ( Kriegsmarine). All crew survived. |
| K-12 | Soviet Navy | World War II: The tug was sunk in the Baltic Sea by Taisto, Tuima, Tuuli, and Jyske ( Finnish Navy). |
| Krupskaya | Germany | World War II: The barge was sunk in the Black Sea by mines dropped by Soviet Ilyushin Il-4 aircraft. |
| LTP-11 | Soviet Navy | World War II: The barge was sunk in the Baltic Sea by Taisto, Tuima, Tuuli, and Jyske ( Finnish Navy) while being towed by K-12 ( Soviet Navy). |
| Maloja | Switzerland | World War II: The steamship, on its last voyage, was erroneously sunk in the Mediterranean Sea by ten German aircraft at 16:15 off Cap Revellata, Corsica. Three crew members lost their lives. |
| USS PT-118 | United States Navy | World War II: The Elco 80' PT boat ran aground off Vella Lavella and was scuttled. |
| USS PT-172 | United States Navy | World War II: The Elco 80' PT boat ran aground off Vella Lavella and was scuttled. |
| U-760 | Kriegsmarine | World War II: The Type VIIC submarine was severely damaged by depth charges from a Vickers Wellington aircraft of 179 Squadron, Royal Air Force. She put into Ferrol, Spain, where she was interned on 9 September. |
| Velella | Regia Marina | World War II: The Argo-class submarine was torpedoed and sunk off Salerno (40°07′N 14°50′E﻿ / ﻿40.117°N 14.833°E﻿ / 40.117; 14.833) by HMS Shakespeare ( Royal Navy). |

## 8 September

List of shipwrecks: 8 September 1943 :
| Ship | State | Description |
| Calitea II | Regia Marina | World War II: The cargo ship, under charter to the Imperial Japanese Navy as a supply ship, was scuttled by her crew at Kobe, Japan, after the Italian government surrendered to the Allies. Raised in 1943, repaired and put into Japanese service as Ikutagawa Maru. |
| Etna | Regia Marina | World War II: The incomplete Etna-class cruiser, only 84% finished, was scuttled in Zaule Bay near Trieste. Raised by the Germans. |
| Hakutetsu Maru No. 13 | Japan | World War II: The cargo ship (1,334 t) was torpedoed and sunk in the Pacific Ocean off Hollandia, New Guinea (2°30′S 141°44′E﻿ / ﻿2.500°S 141.733°E﻿ / -2.500; 141.733) by USS Drum ( United States Navy). 16 crew, 2 gunners and 81 passengers were killed. |
| HMS LCT 624 | Royal Navy | The LCT-4-class landing craft tank (350/640 t, 1943) was lost in the Mediterranean Sea. |
| M 3810 | Kriegsmarine | World War II: The auxiliary minesweeper was sunk in the English Channel off Fécamp, Seine-Inférieure, France by HMS MTB 211, HMS MTB 249 and HMS MTB 255 (all Royal Navy). |
| M 3811 Clara | Kriegsmarine | World War II: The naval drifter/minesweeper was sunk in the English Channel off Fécamp by HMS MTB 211, HMMTB 249 and HMMTB 255 (all Royal Navy). |
| M 3816 Sursom Corda | Kriegsmarine | World War II: The naval drifter/minesweeper was sunk in the English Channel off Fécamp by HMS MTB 211, HMMTB 249 and HMMTB 255 (all Royal Navy). |
| HMS MTB 77 | Royal Navy | World War II: The Vosper 72'-class motor torpedo boat (39/47 t, 1942) was bombed and sunk off Vigo, Spain by German aircraft. |
| Rauenthaler | Germany | World War II: The cargo ship (3,727 GRT, 1940) was lost in a collision with Signal ( Germany) off Trondheim, Norway whilst in a convoy. |
| U-983 | Kriegsmarine | The Type VIIC submarine collided in the Baltic Sea north of Loba (54°46′N 17°14′E﻿ / ﻿54.767°N 17.233°E﻿ / 54.767; 17.233) with the submarine U-988 ( Kriegsmarine) and sank with the loss of five of her 43 crew. |
| Vesuvio | Regia Marina | World War II: The incomplete Etna-class cruiser, only 60% finished, was scuttled in Zaule Bay near Trieste. Raised by the Germans. |

## 9 September

List of shipwrecks: 9 September 1943 :
| Ship | State | Description |
| Ammiraglio des Geneys | Regia Marina | World War II: The Pisani-class submarine was scuttled at Pola. |
| Antonio Bajamonti | Regia Marina | World War II: The Osvetnik-class submarine was scuttled at La Spezia. |
| Antonio da Noli | Regia Marina | World War II: The Navigatori-class destroyer struck a mine and sank in the Strait of Bonifacio. 223 crew were killed. |
| Aradam | Regia Marina | World War II: The Adua-class submarine was bombed and sunk at Genoa by Allied aircraft. |
| Berenice | Regia Marina | World War II: The Gabbiano-class corvette was shelled and sunk by German batteries at Trieste. |
| Buccari | Regia Marina | World War II: The Fasana-class minelayer was scuttled at La Spezia. |
| Carlotto | Regia Marina | World War II: The gunboat was scuttled at Shanghai, China. |
| Cattaro | Regia Marina | World War II: The auxiliary cruiser was scuttled at "Santa Margharita". |
| Conte Verde | Italy | World War II: The ocean liner was scuttled in the Huangpu River at Shanghai by her Italian crew. She was refloated by the Japanese, repaired and taken in to service as Kotobuki Maru. |
| RFA Derwentdale | Royal Fleet Auxiliary | World War II: Operation Avalanche: The Landing Ship, Gantry was bombed and severely damaged at Salerno, Italy. Subsequently towed to the United Kingdom, repaired and returned to service. |
| Drachenfels | Germany | World War II: The cargo ship was set afire and scuttled at Mormugao, Portuguese India. The wreck was refloated in December 1950, beached and scrapped. |
| Euterpe | Regia Marina | World War II: The Gabbiano-class corvette was scuttled at La Spezia. Raised, repaired and put into Kriegsmarine service as UJ-2228. |
| F 366 | Kriegsmarine | World War II: The Marinefährprahm was sunk at Bastia, Corsica, France by Aliseo and Cormorano (both Regia Marina). One crew was killed. |
| F 387 | Kriegsmarine | World War II: The Marinefährprahm was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). There was no casualty. |
| F 459 | Kriegsmarine | World War II: The Marinefährprahm was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). |
| F 612 | Kriegsmarine | World War II: The Marinefährprahm was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). |
| F 623 | Kriegsmarine | World War II: The Marinefährprahm was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). |
| FR 22 | Regia Marina | World War II: The Chacal-class destroyer was scuttled at La Spezia. |
| FR 51 | Regia Marina | World War II: The Élan-class corvette was scuttled at La Spezia, Italy. Raised, repaired and put in Kriegsmarine service as SG 23, later UJ-2231 ( Kriegsmarine). |
| FR 118 | Regia Marina | World War II: The Redoutable-class submarine was scuttled at Genoa, Italy. Wreck later scrapped by Germany. |
| Generale Achille Papa | Regia Marina | World War II: The Generali-class torpedo boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as SG 20. |
| Generale Antonio Cascino | Regia Marina | World War II: The Generali-class torpedo boat was scuttled at La Spezia. |
| Generale Carlo Montanari | Regia Marina | World War II: The Generali-class torpedo boat was scuttled at La Spezia. Raised by the Germans but not repaired. |
| Ghibli | Regia Marina | World War II: The Ciclone-class torpedo boat was scuttled at La Spezia. Raised by the Germans, but not repaired. |
| Giovanni Bausan | Regia Marina | World War II: The Pisani-class submarine was scuttled at Pula. |
| Koyo Maru | Japan | World War II: The cargo ship (3,022 t) was attacked in the Pacific Ocean off Honshu by USS Harder ( United States Navy). Only one of three torpedoes hit, and it was a dud, but it caused enough flooding that Koyo Maru later sank under tow the same day 35°23′N 140°38′E﻿ / ﻿35.383°N 140.633°E﻿ / 35.383; 140.633. There were no casualties. |
| USS LCT-366 | United States Navy | The LCI-1-class landing craft tank sank in heavy weather in the Gulf of Alaska south of Kodiak, Territory of Alaska, at 53°01′N 152°00′E﻿ / ﻿53.017°N 152.000°E﻿ / 53.017; 152.000. |
| HMS LCT 391 | Royal Navy | World War II: The Mk 3 landing craft tank (350/640 t, 1942) was sunk by coastal gunfire during the landing at Salerno. Three of the troops aboard were killed.$^{:236}$ |
| HMS LCT 572 | Royal Navy | World War II: The LCT-4-class landing craft tank (350/640 t, 1943) was sunk by a mine during the landing at Salerno. 15 of the troops aboard were killed.$^{:236}$ |
| HMS LCT 626 | Royal Navy | The LCT-4-class landing craft tank (350/640 t, 1943) was lost in the Mediterranean Sea. |
| Larchbank | United Kingdom | World War II: The Inverbank-class cargo ship (5,150 GRT, 1925) was torpedoed and sunk in the Indian Ocean 200 nautical miles (370 km) west of Cape Cormorin (07°38′N 74°00′E﻿ / ﻿7.633°N 74.000°E﻿ / 7.633; 74.000) by I-27 ( Imperial Japanese Navy). Six gunners and 40 crew were killed, 30 survivors were rescued by Tahania ( United Kingdom) and Panaman ( United States). |
| Lepanto | Regia Marina | World War II: The gunboat, a former Azio-class minelayer was scuttled at Shanghai, China. Raised, repaired and put in Imperial Japanese Navy service as Okitsu. |
| Lira | Regia Marina | World War II: The Spica-class torpedo boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as TA49. |
| MAS 424 | Regia Marina | World War II: The MAS 424-class MAS boat was scuttled at Toulon, Var, France. Raised, repaired and put into Kriegsmarine service as S 624. |
| MAS 427 | Regia Marina | World War II: The MAS 423-class MAS boat was scuttled at Pula. Raised, repaired and put in Kriegsmarine service as S 604. |
| MAS 437 | Regia Marina | World War II: The MAS 423-class MAS boat was scuttled at Toulon, France. Raised, repaired and put in Kriegsmarine service as S 625. |
| MAS 525 | Regia Marina | World War II: The MAS 501-class MAS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as S 508. |
| MAS 553 | Regia Marina | World War II: The MAS 552-class MAS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as SA 14. |
| MS 16 | Regia Marina | World War II: The MS 11-class MS boat was scuttled at Voltri. Raised, repaired and put in Kriegsmarine service as SA 1. |
| MS 32 | Regia Marina | World War II: The MS 11-class MS boat was scuttled at Viareggio. |
| MS 34 | Regia Marina | World War II: The MS 11-class MS boat was scuttled at Bocca di Magra. Raised, repaired and put in Kriegsmarine service as SA 2. |
| MS 36 | Regia Marina | World War II: The MS 11-class MS boat was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as SA 3. |
| MS 41 | Regia Marina | World War II: The Lursen E boat was scuttled at Molfalcone. Raised, but not repaired. |
| MS 51 | Regia Marina | World War II: The MS 51-class MS boat was scuttled at Bocche di Marga. Raised, repaired and put in Kriegsmarine service as SA 4. |
| HMIS MTB 284 | Royal Indian Navy | World War II: The Vosper 72'-class motor torpedo boat (37/45 t, 1943) was lost as cargo when Larchbank ( United Kingdom) was sunk by I-27 ( Imperial Japanese Navy) in the Indian Ocean (07°38′N 74°00′E﻿ / ﻿7.633°N 74.000°E﻿ / 7.633; 74.000). |
| HMIS MTB 285 | Royal Indian Navy | World War II: The Vosper 72'-class motor torpedo boat (37/45 t, 1943) was lost as cargo when Larchbank ( United Kingdom) was sunk by I-27 ( Imperial Japanese Navy) in the Indian Ocean (07°38′N 74°00′E﻿ / ﻿7.633°N 74.000°E﻿ / 7.633; 74.000). |
| Murena | Regia Marina | World War II: The Flutto-class submarine was scuttled at La Spezia, Italy. Raised, repaired and put in Kriegsmarine service as UIT-16. |
| USS Nauset | United States Navy | World War II: The Navajo-class fleet tug was bombed and sunk in the Gulf of Salerno by Luftwaffe aircraft with the loss of 18 of her 113 crew. |
| Nicolò Zeno | Regia Marina | World War II: The Navigatori-class destroyer was scuttled at La Spezia, Italy. |
| Pelagose | Regia Marina | World War II: The Fasana-class minelayer was shelled and sunk off Genoa by German artillery. |
| Persefone | Regia Marina | World War II: The Gabbiano-class corvette was scuttled at La Spezia. Raised, repaired and put in Kriegsmarine service as UJ 2227. |
| Procione | Regia Marina | World War II: The Orsa-class torpedo boat was scuttled at La Spezia. |
| R-7 and R-13 | Kriegsmarine | World War II: The Type R-2 minesweepers were scuttled at Salerno, Italy. |
| R 240 Vulcania | Regia Marina | World War II: The auxiliary minesweeper was torpedoed and sunk in the Adriatic Sea by S 54 and S61 (both Kriegsmarine). |
| RD 13 | Regia Marina | World War II: The RD-class minesweeper was scuttled at Viareggio. |
| Roma | Regia Marina | Roma World War II: The Littorio-class battleship was sunk in the Mediterranean Sea off Asinara by a Fritz X launched by a Dornier Do 217 of the Luftwaffe with the loss of 1,393 of her 2,021 crew. |
| Silvano | Italy | World War II: The cargo ship was scuttled at Naples, Italy. Wreck raised in 1944 and scrapped. |
| Sirena | Regia Marina | World War II: The Sirena-class submarine was scuttled at La Maddalena, Sicily. |
| Taranto | Regia Marina | World War II: The Magdeburg-class cruiser was scuttled at La Spezia. Later raised by the Germans, and sunk twice more. Scrapped in 1946-47. |
| Toni II | Germany | World War II: The severely damaged tanker was scuttled at Naples. She was raised in 1946, repaired and entered Italian service in 1948 as Vampa. |
| Ugolino Vivaldi | Regia Marina | World War II: The Navigatori-class destroyer was shelled by German shore batteries and bombed by German aircraft off La Maddalena, sinking the next day. 60 of her 280 crew did not survive the battle, the sinking or the ordeal at sea that followed. A part of the survivors were rescued by HMS Sportsman ( Royal Navy). |
| UJ 2203 Austral | Kriegsmarine | World War II: The naval trawler/submarine chaser was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). |
| UJ 2219 Insuma | Kriegsmarine | World War II: The armed yacht/submarine chaser was sunk at Bastia by Aliseo and Cormorano (both Regia Marina). |
| Valverde | Italy | World War II: The cargo ship was sunk by Kriegsmarine E-boats off "Castellogncello". |
| VAS 207 and VAS 225 | Regia Marina | World War II: The VAS 201-class submarine chasers were scuttled at Bocca di Magra. |
| VAS 234 | Regia Marina | World War II: The VAS 231-class submarine chaser was sunk by gunfire from R-212 and R-215 Kriegsmarine off Gorgona Island. Contrammiraglio Federico Martinengo, commander of the Italian Navy ASW forces, was the only person killed in the action. |
| VAS 236 | Regia Marina | World War II: The VAS 231-class submarine chaser was scuttled at Portovenere. Raised, repaired and put into Kriegsmarine service as RA 261. |
| VAS 244 | Regia Marina | World War II: The VAS 231-class submarine chaser was sunk by Allied aircraft off Salerno. |
| Volframio | Regia Marina | World War II: The Acciaio-class submarine was scuttled at La Maddalena. Raised by the Germans. |

## 10 September

List of shipwrecks: 10 September 1943 :
| Ship | State | Description |
| HMS Abdiel | Royal Navy | World War II: The Abdiel-class minelayer (2,650/3,780 t, 1941) struck a mine and sank at Taranto, Apulia, Italy (40°29′N 17°15′E﻿ / ﻿40.483°N 17.250°E﻿ / 40.483; 17.250) with the loss of 151 of the 276 people on board. |
| Antonio Pigafetta | Regia Marina | World War II: The Navigatori-class destroyer was scuttled at Fiume, Italy. Raised, repaired and put into Kriegsmarine service as TA44. |
| Ardor | Italy | World War II: The tanker was bombed and set on fire by Junkers Ju 87 aircraft of the Luftwaffe off Kotor, Croatia. Eleven of her 21 crew were killed and the survivors abandoned her. Left adrift, she ran aground and was sunk by a new air attack on 12 September. |
| Argo | Regia Marina | World War II: The Argo-class submarine was scuttled at Monfalcone, Italy. |
| DB-2, DB-3, DB-19, DB-22 and DB-34 | Soviet Navy | The No. 1-class landing boats were lost on this date. |
| F 478 | Kriegsmarine | World War II: The Type C2 Marinefahrprahm was scuttled off Taranto, Italy, after an Italian cruiser was seen and the whole crew was rescued by S 54 and S61 (both Kriegsmarine). |
| FC 45 Fortis | Kriegsmarine | The naval trawler was lost on this date. |
| Insidioso | Regia Marina | World War II: The Indomito-class torpedo boat was scuttled by her crew at Pola, Italy. She was refloated and repaired by the Germans and placed in service as Wildfang ( Kriegsmarine). |
| No. 064 | Soviet Navy | The MO-4-class submarine chaser was sunk on this date. |
| No. 71 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| No. 122 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| Piero Foscari | Regia Marina | World War II: The auxiliary cruiser was sunk at Castiglioncello, Italy, by German ships. One crew was killed. |
| RTShch-104 | Soviet Navy | WThe K-15/M-17-class river minesweeping launch was sunk on this date. |
| SKA-025 | Soviet Navy | World War II: The torpedo boat was sunk in the Black Sea by German action off the Kuban coast. |
| SKA-032 | Soviet Navy | World War II: The torpedo boat was sunk in the Black Sea by German action off the Kuban coast. |
| SKA-084 | Soviet Navy | World War II: The torpedo boat was sunk in the Black Sea by German action off the Kuban coast. |
| STS-124 | Soviet Navy | World War II: The G-5-class torpedo boat was sunk in the Black Sea by German action off the Kuban coast. |
| STS-125 | Soviet Navy | World War II: The torpedo boat was sunk in the Black Sea by German action off the Kuban coast. |
| T8 | Regia Marina | World War II: The T-class torpedo boat was sunk in the Adriatic Sea northwest of Dubrovnic by Luftwaffe aircraft. |
| VAS 208 | Regia Marina | World War II: The submarine chaser was shelled and sunk at Piombino by German shore-based artillery. |
| VAS 214 | Regia Marina | World War II: The submarine chaser was shelled and sunk at Piombino by German shore-based artillery. |
| VAS 219 | Regia Marina | World War II: The submarine chaser was shelled and sunk at Piombino by German shore-based artillery. |
| VAS 220 | Regia Marina | World War II: The submarine chaser was shelled and sunk at Piombino by German shore-based artillery. |
| VAS 247 | Regia Marina | World War II: The VAS 231-class submarine chaser was sunk by a Kriegsmarine Marinefährprahm off Civitavecchia. |
| W-16 | Imperial Japanese Navy | World War II: The No.13-class minesweeper was bombed and sunk in Makassar Strait south of Makassar, Netherlands East Indies (06°08′S 119°20′E﻿ / ﻿6.133°S 119.333°E﻿ / -6.133; 119.333) by Consolidated B-24 Liberator aircraft of the United States Fifth Air Force. |

## 11 September

List of shipwrecks: 11 September 1943 :
| Ship | State | Description |
| Anke | Germany | World War II: The cargo ship (3,782 t) was torpedoed and sunk in the Norwegian Sea off Trondheim, Norway by HNoMS MTB 618 and HNoMS MTB 627 (both Royal Norwegian Navy). There were two dead and 4 wounded. |
| Aurora | Regia Marina | World War II: The gunboat (935 t) was sunk off Ancona by S 61, and S 64 (both Kriegsmarine). 27 crew were killed. The 62 survivors were captured by the German and two died later in captivity. |
| Conte di Savoia | Italy | World War II: The ocean liner was scuttled at Malamocco, Veneto. She was refloated 16 October 1945 but deemed uneconomic to repair and scrapped in 1950 at Monfalcone, Friuli-Venezia Giulia. |
| Giuseppe La Masa | Regia Marina | World War II: The torpedo boat, a former La Masa-class destroyer, was scuttled at Naples. |
| Hokusho Maru | Imperial Japanese Navy | World War II: The Hokuyo Maru-class auxiliary transport ship (4,211 t) was torpedoed and sunk three nautical miles (5.6 km; 3.5 mi) north west of Nauru Island (0°28′N 166°52′E﻿ / ﻿0.467°N 166.867°E﻿ / 0.467; 166.867) by USS Narwhal ( United States Navy). 32 of her crew were killed. |
| Humanitas | Italy | World War II: The cargo ship was torpedoed and damaged in the Tyrrhenian Sea off Corsica by HNLMS Dolfijn ( Royal Netherlands Navy). She was declared a total loss. |
| Impetuoso | Regia Marina | World War II: The Ciclone-class torpedo boat was scuttled in Polensa Bay. |
| India | Norway | World War II: The tanker (9,977 GRT, 1939) was shelled and sunk in the South Pacific Ocean by Michel ( Kriegsmarine) while bounded from Talara, Peru to Sydney, Australia. All 41 crewmen were killed. |
| USS LCT-71 | United States Navy | The LCT-1-class landing craft tank sank in heavy weather in the Gulf of Alaska south of Kodiak, Territory of Alaska, at 53°38′N 146°05′E﻿ / ﻿53.633°N 146.083°E﻿ / 53.633; 146.083. All 12 crew were rescued by LST-479 ( United States Navy). |
| MAS 431 | Regia Marina | World War II: The MAS 423-class MAS boat was scuttled at Split, Yugoslavia. Raised, repaired and put into Kriegsmarine service as S 603. |
| No. 21 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| No. 55 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| No. 084 | Soviet Navy | The MO-4-class submarine chaser was sunk on this date. |
| No. 91 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| No. 112 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| No. 125 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| Partenope | Regia Marina | World War II: The Spica-class torpedo boat was scuttled at Naples. |
| Pegaso | Regia Marina | World War II: The Orsa-class torpedo boat was scuttled in Polensa Bay. |
| Quintino Sella | Regia Marina | World War II: The Sella-class destroyer was sunk off Venice by S 61, and S 54 (both ( Kriegsmarine)). |
| USS Rowan | United States Navy | World War II: Operation Avalanche: The Benham-class destroyer was torpedoed and sunk in the Mediterranean Sea off Salerno, Italy by a Kriegsmarine E-boat with the loss of 202 of her 273 crew. |
| USS Savannah | United States Navy | USS Savannah World War II: Operation Avalanche: The Brooklyn-class cruiser was struck by a Fritz X bomb and severely damaged with the loss of 197 of her 868 crew. She sailed to Malta for temporary repairs. After permanent repairs in the United States, she re-entered service in September 1944. |
| S 46 | Kriegsmarine | World War II: The Type 1939/40 E-boat was sunk in the Black Sea off Feodosia, Soviet Union during a Soviet air attack when strafing detonated one of her torpedoes. Two crew were killed. |
| T 6 | Regia Marina | World War II: The T-class torpedo boat was scuttled at Cesenatico. |
| TA11 | Kriegsmarine | World War II: The La Melpomène-class torpedo boat was sunk by Aliseo and Cormorano (both Regia Marina) and Italian tanks at Elba (42°55′N 10°32′E﻿ / ﻿42.917°N 10.533°E﻿ / 42.917; 10.533). |
| UJ-1217 | Kriegsmarine | World War II: The submarine chaser was torpedoed and sunk in Syltefjorden (70°38′N 30°26′E﻿ / ﻿70.633°N 30.433°E﻿ / 70.633; 30.433) by M-7 ( Soviet Navy). 29 of her 42 crewmen were killed. |
| VAS 208, VAS 214, VAS 219 and VAS 220 | Regia Marina | World War II: The VAS 205-class submarine chasers were shelled and sunk by German coastal batteries off Piombino. |
| X5, X6, X7, X8 and X9 | Royal Navy | World War II: Operation Source: The midget submarines were all expended in attacks on Lützow, Scharnhorst and Tirpitz (all Kriegsmarine) in Kåfjord and Langefjord, Norway. Of the 15 crew, nine were killed and six taken as prisoners of war. |
| Yoko Maru | Imperial Japanese Navy | World War II: The Yoko Maru class auxiliary transport ship (1,050 t) was torpedoed in the Pacific Ocean south of Mikura-jima, Izu Islands by USS Harder ( United States Navy). She sank the next day about 2.7 nautical miles west south west of Mikura Jima (33°48′N 139°37′E﻿ / ﻿33.800°N 139.617°E﻿ / 33.800; 139.617). Eight crewmen were killed. |

## 12 September

List of shipwrecks: 12 September 1943 :
| Ship | State | Description |
| Ametista | Regia Marina | World War II: The Sirena-class submarine (678 t) was scuttled off Ancona. There were no casualties. |
| HMS LCP(L) 316 | Royal Navy | The landing craft, personnel (large) (6/8 t, 1942) was lost on this date. |
| HMS LCP(R) 879 | Royal Navy | The landing craft, personnel (ramped) (6/8 t, 1942) was lost on this date. |
| HMS LCV 597 | Royal Navy | The landing craft vehicle was lost on this date. |
| MAS 518 | Regia Marina | World War II: The MAS 501-class MAS boat was scuttled at Venice. |
| No. 171 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| NM 09 Johann Kaptinger | Kriegsmarine | The Polarstern-class naval whaler was sunk in a collision off Bodo. |
| USS Navajo | United States Navy | World War II: The Navajo-class fleet tug was torpedoed and sunk in the Pacific Ocean 14°58′35″S 169°17′57″E﻿ / ﻿14.97639°S 169.29917°E﻿ / -14.97639; 169.29917 by I-39 ( Imperial Japanese Navy) with the loss of seventeen of her 80 crew. |
| Pugliola | Italy | World War II: The cargo ship struck a mine and sank off the Isola Sant'Andrea. |
| Serpente | Regia Marina | World War II: The Argonauta-class submarine (650 t) was scuttled off Ancona. There were no casualties. |
| Shonan Maru | Japan | World War II: The transport was bombed and sunk in the Paramushiro Strait by Consolidated B-24 Liberator and North American B-25 Mitchell aircraft of the United States Eleventh Air Force. Later salvaged. |
| Topazio | Regia Marina | World War II: The Sirena-class submarine (678 t) was sunk in the Mediterranean Sea off Sardinia (38°39′N 9°22′E﻿ / ﻿38.650°N 9.367°E﻿ / 38.650; 9.367) by a Bristol Bisley aircraft of 13 Squadron, Royal Air Force with all 49 hands. |
| U-617 | Kriegsmarine | World War II: The Type VIIC submarine ran aground off Melilla, Spain (35°38′N 3°27′W﻿ / ﻿35.633°N 3.450°W﻿ / 35.633; -3.450) whilst under attack by Lockheed Hudson aircraft of 48 and 233 Squadrons, Royal Air Force and Fairey Swordfish aircraft of 833 and 886 Squadrons, Fleet Air Arm. All 49 crew survived the attack. U-617 was shelled and sunk by HMS Hyacinth ( Royal Navy) and HMAS Wollongong ( Royal Australian Navy). |
| UJ 1217 Star XXII | Kriegsmarine | The submarine chaser/naval whaler was lost on this date. |

## 13 September

List of shipwrecks: 13 September 1943 :
| Ship | State | Description |
| Caterina Madre | Italy | World War II: The cargo ship struck a mine and sank 10 nautical miles (19 km) off Sant'Andrea Island. |
| FR 114 | Regia Marina | World War II: The Requin-class submarine was scuttled in a shipyard in Castellemmare di Stabia. |
| Fort Babine | United Kingdom | World War II: The Fort ship (7,135 t) was bombed and sunk in the Atlantic Ocean 250 nautical miles (460 km) southwest of Cape Finisterre, Spain (41°31′N 14°39′W﻿ / ﻿41.517°N 14.650°W﻿ / 41.517; -14.650) by Focke-Wulf Fw 200 aircraft of I./Kampfgeschwader 40, Luftwaffe. 7 gunners were killed in the attack. |
| HMHS Newfoundland | United Kingdom | World War II: The hospital ship (6,791 GRT, 1925) was struck by a Henschel Hs 293 glide bomb in the Mediterranean Sea 40 nautical miles (74 km) off Salerno, Italy, with the loss of 21 of her crew. The patients and surviving crew on board were rescued by USS Mayo ( United States Navy). She was scuttled the next day by USS Plunkett ( United States Navy). |
| Terra Nova | United Kingdom | The barque (764 GRT, 1884) was damaged by ice and sank in the Atlantic Ocean off the southwest tip of Greenland. Her crew were rescued by USCGC Southwind ( United States Navy). |
| HMS Uganda | Royal Navy | World War II: Operation Avalanche: The Crown Colony-class cruiser (8,875/10,850 t, 1943) was struck by a Fritz X glide bomb and severely damaged off Salerno, Sicily, Italy. She was towed to Malta by USS Narragansett ( United States Navy). Following temporary repairs, she sailed to Charleston, South Carolina for permanent repairs. Transferred to the Royal Canadian Navy whilst under repair, she entered service as HMCS Uganda on 21 October 1944. |
| Yamato Maru | Japan | World War II: Convoy No. 195: The cargo liner (9,757 t) was torpedoed and sunk in the East China Sea (30°18′N 123°35′E﻿ / ﻿30.300°N 123.583°E﻿ / 30.300; 123.583) by USS Snook ( United States Navy). Twenty-nine passengers and four crewmen were killed. |

## 14 September

List of shipwrecks: 14 September 1943 :
| Ship | State | Description |
| Bramora | Norway | World War II: The tanker (6,361 t) was torpedoed and sunk in the Indian Ocean south west of Chagos Island (6°10′N 67°37′E﻿ / ﻿6.167°N 67.617°E﻿ / 6.167; 67.617) by I-10 ( Imperial Japanese Navy) with the loss of all 40 crew, who may have been massacred. |
| Bushrod Washington | United States | World War II: The Liberty ship was bombed and set on fire at Salerno, Italy, by a German glide bomb dropped by a Luftwaffe aircraft with the loss of seven lives. She blew up and sank the next day. |
| Giuseppe Sirtori | Regia Marina | World War II: The Giuseppe Sirtori-class torpedo boat was heavily damaged by German aircraft off Corfu and beached. She was blown up by her crew on 25 September. |
| Grotte de Bethlehem | Vichy France | World War II: The fishing trawler was sunk in the Mediterranean Sea by HMS Upstart ( Royal Navy). Her crew were allowed to take to the lifeboats. |
| H6 | Regia Marina | World War II: Seized by the Germans after Italy's surrender to the Allies, the H-class submarine was sunk by German forces at Bonifacio, Corsica. |
| James W. Marshall | United States | World War II: The Liberty ship was bombed and sunk in the Mediterranean Sea off Salerno with the loss of 63 lives. She was subsequently salvaged and sunk as a blockship in June 1944. |
| Katsonis | Hellenic Navy | World War II: The Katsonis-class submarine was sunk in the Aegean Sea off Skiathos by UJ-2010 ( Kriegsmarine). |
| USS LCT-19 | United States Navy | World War II: The LCI-1-class landing craft tank was bombed and sunk off Salerno by a Luftwaffe aircraft. |
| M 3410 Waalrus | Kriegsmarine | World War II: The minesweeper was torpedoed and sunk in the North Sea off IJmuiden, North Holland, Netherlands by Royal Navy motor torpedo boats. |
| USS PT-219 | United States Navy | World War II: The Higgins 78-foot (23.8 m) patrol torpedo boat sank in Casco Cove (52°49′00″N 173°10′15″E﻿ / ﻿52.81667°N 173.17083°E﻿ / 52.81667; 173.17083﻿ (Casco Cove)) in Massacre Bay on the coast of Attu Island in the Aleutian Islands during a storm. |
| TK-95 Sovetskogo Soyuza Fedya Fomin | Soviet Navy | World War II: The G-5-class motor torpedo boat was sunk by M 22 ( Kriegsmarine) in the Baltic Sea. Three crewmen were taken as prisoners of war. |
| Torpille | Vichy France | World War II: The fishing trawler was sunk in the Mediterranean Sea by HMS Upstart ( Royal Navy). Her crew were allowed to take to the lifeboats. |
| Unknown barge | United States | The barge broke free from USS Ute ( United States Navy) in heavy weather after leaving Kiska. |
| HMS Warspite | Royal Navy | World War II: The Queen Elizabeth-class battleship (31,315/36,096 t, 1915) was struck by a Fritz X glide bomb off Altavilla Silentina, Italy, and was severely damaged. She was towed to Malta for temporary repairs, arriving on 19 September. She departed under tow for Gibraltar on 12 November. She sailed to HMNB Rosyth in March 1944. Repairs were completed in June. |

## 15 September

List of shipwrecks: 15 September 1943 :
| Ship | State | Description |
| FR 115 | Regia Marina | World War II: The Requin-class submarine was scuttled at Genoa. |
| USS LCT-241 | United States Navy | World War II: The LCI-1-class landing craft tank was bombed and sunk off Salerno, Italy. |
| Ro-101 | Imperial Japanese Navy | World War II: The Ro-100-class submarine was depth charged, shelled and sunk in the Coral Sea east of San Cristobal Island (10°57′S 163°56′E﻿ / ﻿10.950°S 163.933°E﻿ / -10.950; 163.933) by USS Saufley ( United States Navy) and a United States Navy Consolidated PBY Catalina of Squadron VP-23. Lost with all 50 hands. |
| SAT 20 West | Kriegsmarine | World War II: The heavy gun carrier was sunk by Soviet bombers in the Baltic Sea. |

## 16 September

List of shipwrecks: 16 September 1943 :
| Ship | State | Description |
| Graziella | Norway | World War II: The cargo ship (2,137 GRT, 1917) was torpedoed and sunk in the North Sea off the Kvassheim Lighthouse by Bristol Beaufighter aircraft of 489 Squadron, Royal New Zealand Air Force. All crew survived. |
| Giuseppe Dezza | Regia Marina | World War II: The Rosolino Pilo-class torpedo boat was scuttled at Fiume. She was raised and repaired by the Germans and put in service as TA 35 ( Kriegsmarine). |
| Heisternest | Kriegsmarine | World War II: The Filin-class guard ship was bombed and sunk by US aircraft at Nantes, Loire Atlantique, France. |
| R 19 | Kriegsmarine | World War II: The Type R 17 minesweeper was sunk at Nantes during an American air raid. |
| M 4461 Hirondelle III | Kriegsmarine | World War II: The minesweeper was sunk at La Pallice, Charente-Maritime, France during an American air raid. |
| Seikai Maru | Imperial Japanese Navy | World War II: The auxiliary gunboat was sunk by a mine in Kavieng Harbour, New Ireland. |
| Sperrbrecher 16 Tulane | Kriegsmarine | World War II: The Sperrbrecher was sunk at La Pallice during an American air raid. |
| Sperrbrecher 184 Bernisse | Kriegsmarine | World War II: The Sperrbrecher (399 GRT, 1941) was sunk at Nantes during an American air raid. |
| TA4 | Kriegsmarine | World War II: The incomplete Le Fier-class torpedo boat was sunk at Nantes during an American air raid. |
| Uisko | Finnish Navy | World War II: Continuation War: The auxiliary patrol ship was torpedoed and sunk in the Gulf of Finland north of Keri Lighthouse, Keri Island, Estonia, by a Soviet Ilyushin Il-4 aircraft. 18 killed, 2 crewmen rescued. |
| V 1515 Rothienbaum | Kriegsmarine | World War II: The Vorpostenboot was heavily damaged by fighter bombers and sank off Le Havre, France. V 1513 was damaged by the same attack. Total casualties for both ships were 11 dead and 38 wounded. The ship was later raised and repaired. |

## 17 September

List of shipwrecks: 17 September 1943 :
| Ship | State | Description |
| Calbrone, Cavalletta, Cicala, Clava, Grillo, Libellula, Lucciola and Zagaglia | Regia Marina | World War II: The incomplete Gabbiano-class corvettes, captured by the Germans on 13 September, were scuttled in a yard at Castellammare di Stabia when the Germans withdrew from the area. |
| M 3600 Jacques Coer | Kriegsmarine | World War II: The naval trawler/minesweeper (286 GRT, 1907) struck a mine and sank in the North Sea off Ostend, West Flanders, Belgium. |
| M 3604 Motor I | Kriegsmarine | World War II: The naval drifter/minesweeper (127 GRT, 1918) struck a mine and sank in the North Sea off Ostend with the loss of two lives. |
| M 3606 Oceaan VI | Kriegsmarine | World War II: The naval drifter/minesweeper (162 GRT, 1937) was sunk by a mine off Ostend with the loss of 4 lives. |
| Paula | Germany | World War II: The cargo ship was sunk in the Aegean Sea by HMS Eclipse, HMS Faulknor (both Royal Navy) and Vasilissa Olga ( Royal Hellenic Navy). |
| Pluto | Germany | World War II: The cargo ship (1,156 GRT, 1905) was sunk in the Aegean Sea by HMS Eclipse, HMS Faulknor (both Royal Navy) and Vasilissa Olga ( Royal Hellenic Navy). |
| USS Pompano | United States Navy | World War II: The Porpoise-class submarine was attacked by a Japanese seaplane in the Pacific Ocean off Shiriya. Depth charges dropped by Ashizaki ( Imperial Japanese Navy) the next day brought up more oil. Although some sources claim this attack sunk her, others state that she was lost to a mine off Honshū, Japan, on 27 September. |
| USS PT-136 | United States Navy | World War II: The Elco 80' PT boat ran aground off Malai Island in the Vitiaz Strait (05°55′S 148°01′E﻿ / ﻿5.917°S 148.017°E﻿ / -5.917; 148.017) and was scuttled. |

## 18 September

List of shipwrecks: 18 September 1943 :
| Ship | State | Description |
| Francesco Rismondo | Regia Marina | World War II: The Osvetnik-class submarine (676 t) was scuttled off Bonifacio, Corsica, France by the Germans who had captured her on 14 September. There were no casualties. |
| H 6 | Regia Marina | World War II: The Holland 602 type submarine (360 t) was scuttled off Bonifacio, Corsica, France by the Germans who had captured her on 14 September. There were no casualties. |
| Kansai Maru | Imperial Japanese Army | World War II: Convoy O-602A: The Kanto Maru-class auxiliary transport ship (8,614 t) was torpedoed in the Bismarck Sea (00°41′N 146°28′E﻿ / ﻿0.683°N 146.467°E﻿ / 0.683; 146.467) by USS Scamp ( United States Navy), sinking early on 19 September. Twenty-three troops and one crewman were killed. Her captain and 264 survivors were rescued by CH-16 and CH-28 (both Imperial Japanese Navy). |
| Kinrei Maru | Japan | Convoy No. 197: The cargo ship was driven ashore in a typhoon at Naze, Amami Oshima. Later refloated. |
| MAL 8 | Kriegsmarine | The MAL 1 type landing fire support lighter (140 t) was thrown ashore near cape Kazantyp, Azov Sea during a storm. The crew was rescued but the ship could not be recovered and was blown up on 26 September. |
| MS 45 | Regia Marina | World War II: The Lursen E-boat (60 t) was scuttled by an Italian sailor at Cattolica, where her crew has left her on 9 September. There were no casualties. |
| Tomitsu Maru | Japan | The cargo ship was driven ashore in a typhoon at Naze, Amami Oshima. Later refloated. |
| UJ 2104 | Kriegsmarine | World War II: The submarine chaser/naval whaler was shelled and damaged in the Bay of Stampalia by HMS Eclipse, HMS Faulknor (both Royal Navy) and Vasilissa Olga ( Hellenic Navy). She was scuttled by her crew at 36°34′N 26°30′E﻿ / ﻿36.567°N 26.500°E﻿ / 36.567; 26.500. |
| Yowa Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the East China Sea north of Formosa by USS Trigger ( United States Navy). |

## 19 September

List of shipwrecks: 19 September 1943 :
| Ship | State | Description |
| HMS BYMS 2019 | Royal Navy | World War II: The YMS-1-class minesweeper (207/270 t, 1942) struck a mine off Crotone, Italy. She was towed to the port but sank during the night. Four crew were killed.$^{:255}$ |
| Fort Longueuil | United Kingdom | World War II: The Fort ship (7,128 GRT, 1942) was torpedoed and sunk in the Indian Ocean south west of the Chagos Archipelago (approximately 10°S 68°E﻿ / ﻿10°S 68°E﻿ / -10; 68) by U-532 ( Kriegsmarine) with the loss of 57 of her 59 crew. |
| Futtsu Maru | Japan | Convoy No. 197: The ship was driven ashore at Amami-O-Shima by a typhoon. |
| Honan Maru | Japan | Convoy No. 197: The Type 1K standard merchant-class ore carrier was driven ashore at Amami-O-Shima by a typhoon. Refloated and towed by an unknown ship from Convoy 197 to Nagasaki. Repairs finished on 8 April 1944. |
| Kachisan Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Honshu by the submarine USS Harder ( United States Navy). |
| Koso Maru | Japan | Convoy No. 197: The cargo ship was driven ashore at Amami-O-Shima by a typhoon. She was refloated and returned to service. |
| Kyokuyo Maru | Japan | Convoy No. 197: The factory ship (17,549 t) was driven ashore and wrecked at Amami-O-Shima (28°20′N 129°30′E﻿ / ﻿28.333°N 129.500°E﻿ / 28.333; 129.500) by a typhoon. One crew was lost. |
| MS 12 and MS 23 | Regia Marina | World War II: The MS 11-class E-boats were sunk at Stampalia by German aircraft. |
| Taketoyo Maru | Japan | Convoy No. 192: The tanker was driven ashore at Amami-O-Shima by a typhoon. Refloated and returned to service by mid October. |
| Tango Maru | Japan | Convoy No. 197: The government-requisitioned cargo ship was driven ashore at Amami-O-Shima (28°20′N 129°30′E﻿ / ﻿28.333°N 129.500°E﻿ / 28.333; 129.500) by a typhoon. Refloated and returned to service by December. |
| U-341 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (58°34′N 25°30′W﻿ / ﻿58.567°N 25.500°W﻿ / 58.567; -25.500) by a Consolidated B-24 Liberator aircraft of 10 Squadron, Royal Canadian Air Force with the loss of all 50 crew. |
| Villarosa | Italy | World War II: The cargo liner was bombed and sunk by Allied aircraft at Naples. She was refloated in June 1945. Subsequently repaired and returned to service as Taurinia. |

## 20 September

List of shipwrecks: 20 September 1943 :
| Ship | State | Description |
| Almenara | United Kingdom | World War II: The cargo ship struck a mine and sank in the Gulf of Taranto 20 to 25 nautical miles (37 to 46 km) south south east of Taranto, Italy with the loss of 41 of the 84 people on board. |
| Frederick Douglass | United States | World War II: Convoy ON 202: The Liberty ship was torpedoed and damaged in the Atlantic Ocean (57°03′N 28°08′W﻿ / ﻿57.050°N 28.133°W﻿ / 57.050; -28.133) by U-238 ( Kriegsmarine) and was abandoned by her crew. All 71 people on board were rescued by Rathlin ( United Kingdom). Frederick Douglass was later torpedoed and sunk by U-645 ( Kriegsmarine). |
| Katsura Maru No. 2 Go | Imperial Japanese Navy | World War II: The Katsura Maru No. 2 Go-class auxiliary fleet replenishment ship was torpedoed and sunk in the Pacific Ocean (49°05′N 141°45′E﻿ / ﻿49.083°N 141.750°E﻿ / 49.083; 141.750) by USS S-28 ( United States Navy). Five crewmen were killed. |
| HMS Lagan | Royal Navy | World War II: Convoy ON 202: The River-class frigate (1,445/2,165 t, 1942) was torpedoed and damaged in the Atlantic Ocean 57°09′N 27°28′W﻿ / ﻿57.150°N 27.467°W﻿ / 57.150; -27.467 by U-270 ( Kriegsmarine) with the loss of 29 crew. She was towed to the United Kingdom by Destiny ( United Kingdom) but was declared a constructive total loss.<re>"HMS Lagan (L 259)". Uboat. Retrieved 14 March 2012.</ref> |
| No. 54 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| Spalato | Regia Marina | World War II: The incomplete Split-class destroyer was sunk at dock in Split, Yugoslavia by Yugoslav Partizans. Later salvaged by the Germans. |
| HMCS St. Croix | Royal Canadian Navy | World War II: Convoy ON 202: The Town-class destroyer (1,190/1,590 t, 1919) was torpedoed and sunk in the Bay of Biscay (57°30′N 31°30′W﻿ / ﻿57.500°N 31.500°W﻿ / 57.500; -31.500) by U-305 ( Kriegsmarine) with the loss of 68 of her 149 crew. The 81 survivors were rescued by HMS Itchen ( Royal Navy), but 80 of them would be killed the next day when that ship was sunk by U-666 ( Kriegsmarine). |
| St. Usk | United Kingdom | World War II: The cargo ship (5,472 GRT, 1909) was torpedoed and sunk in the Atlantic Ocean (16°30′S 29°28′W﻿ / ﻿16.500°S 29.467°W﻿ / -16.500; -29.467) by U-161 ( Kriegsmarine). Her captain was taken as a prisoner of war, the rest of her 51 crew were rescued by Albareda ( Spain). |
| Theodore Dwight Weld | United States | World War II: Convoy ON 202: The Liberty ship was torpedoed and sunk in the Atlantic Ocean 500 nautical miles (930 km) south west of Iceland (57°03′N 28°08′W﻿ / ﻿57.050°N 28.133°W﻿ / 57.050; -28.133) by U-238 ( Kriegsmarine) with the loss of 12 gunners and 20 crewmen. Survivors were rescued by Rathlin ( United Kingdom). |
| U-338 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by HMCS Drumheller ( Royal Canadian Navy) with the loss of all 51 crew. |
| U-346 | Kriegsmarine | The Type VIIC submarine sank in Danzig Bay 54°37′38″N 18°50′26″E﻿ / ﻿54.62722°N 18.84056°E﻿ / 54.62722; 18.84056 in a diving accident with the loss of 37 of her 43 crew. |
| USS YF-579 | United States Navy | The self-propelled covered lighter sprang a leak and sank while under tow off San Francisco, California. Salvage efforts were unsuccessful and the wreck was blown up. |

## 21 September

List of shipwrecks: 21 September 1943 :
| Ship | State | Description |
| Antje Fritzen | Germany | World War II: The cargo ship was torpedoed and sunk in the Arctic Sea off the Fischer Peninsula by TKA-21 ( Kriegsmarine), or sunk by mine with Soviet motor torpedo boats witnessing the sinking. |
| Argun Maru | Japan | World War II: Convoy RINJI-B: The cargo ship was torpedoed and sunk in the East China Sea 30 miles (48 km) north of the Hoka Sho light, Formosa (26°33′N 123°10′E﻿ / ﻿26.550°N 123.167°E﻿ / 26.550; 123.167) by USS Trigger ( United States Navy). Two crew were killed. |
| Brandenburg | Kriegsmarine | World War II: The minelayer was torpedoed and sunk 7 miles (11 km) northeast of Isola di Capraia, Italy (43°08′N 90°58′E﻿ / ﻿43.133°N 90.967°E﻿ / 43.133; 90.967) by HMS Unseen ( Royal Navy). 25 crewmen missing and 30 wounded. Survivors rescued by R 189 and R 201 (both Kriegsmarine). |
| Cornelia P. Spencer | United States | World War II: The Liberty ship was torpedoed and sunk in the Indian Ocean (2°08′N 50°10′E﻿ / ﻿2.133°N 50.167°E﻿ / 2.133; 50.167) by U-188 ( Kriegsmarine) with the loss of two of her 68 crew. Survivors were rescued by HMS Relentless ( Royal Navy), Sandown Castle ( United Kingdom) or reached land in their lifeboat. |
| F 509 | Kriegsmarine | The Type C Marinefahrprahm was sunk on this date. |
| Hokusei Maru | Japan | World War II: The ship was sunk in the Pacific Ocean by USS Wahoo ( United States Navy). |
| Kreta | Kriegsmarine | World War II: The night fighter direction vessel was torpedoed and sunk in the Mediterranean Sea 7 miles (11 km) northeast of Isola di Capraia (43°08′N 90°58′E﻿ / ﻿43.133°N 90.967°E﻿ / 43.133; 90.967) by HMS Unseen ( Royal Navy). Five crewmen killed, eleven wounded. Survivors were rescued by R 189 and R 201 (both Kriegsmarine). |
| Nikolaus | Germany | World War II: The cargo ship was torpedoed and sunk by ORP Dzik ( Polish Navy) off Bastia, Corsica, France. |
| HMS Polyanthus | Royal Navy | World War II: Convoys ONS 18/ON 202: The Flower-class corvette (925/1,170 t, 1941) was torpedoed and sunk about 1,000 miles (1,600 km) southwest of Reykjavík (57°00′N 31°10′W﻿ / ﻿57.000°N 31.167°W﻿ / 57.000; -31.167) by U-952 Kriegsmarine during convoy escort duty with the loss of all but one of her 86 crew. |
| StuBo 1088 | Kriegsmarine | The StuBo42 type landing craft/motor launch was sunk on this date. |
| Shiriya | Imperial Japanese Navy | World War II: Convoy RINJI-B: The fleet oiler was torpedoed, exploded and sunk in the East China Sea 30 miles (48 km) north of the Hoka Sho light, Formosa (26°33′N 123°10′E﻿ / ﻿26.550°N 123.167°E﻿ / 26.550; 123.167) by USS Trigger ( United States Navy). |
| Shoyo Maru | Imperial Japanese Navy | World War II: Convoy RINJI-B: The transport ship was torpedoed and sunk in the East China Sea 30 miles (48 km) north of the Hoka Sho light, Formosa (26°27′N 122°40′E﻿ / ﻿26.450°N 122.667°E﻿ / 26.450; 122.667) by USS Trigger ( United States Navy). Five crew were killed. |
| Tiberiade | France | World War II: The cargo ship capsized and sank in an Allied air raid on Bastia, Corsica. |
| William W. Gerhard | United States | World War II: Convoy NSS 3: The Liberty ship was torpedoed and damaged in the Tyrrhenian Sea 45 nautical miles (83 km) south of Salerno, Italy (40°05′N 14°43′E﻿ / ﻿40.083°N 14.717°E﻿ / 40.083; 14.717) by U-593 ( Kriegsmarine) with the loss of two of the 267 people on board. Survivors abandoned ship and were rescued by the convoy's escorts, including USS Symbol, which rescued 124 people. The crew reboarded William W. Gerhard. She was taken in tow by USS Moreno ( United States Navy) but a fire broke out and the crew were taken off. Her cargo of ammunition exploded and the ship broke in two, with the bow section sinking. The stern section was scuttled by USS Moreno. |

## 22 September

List of shipwrecks: 22 September 1943 :
| Ship | State | Description |
| Andrea Sgarallino | Italy | World War II: The small passenger ship was torpedoed and sunk in the Mediterranean Sea by HMS Uproar ( Royal Navy), with the loss of some 300 civilians. |
| USS APc-35 | United States Navy | The coastal transport ran aground off Tetepare Island, Solomon Islands (08°48′S 157°46′E﻿ / ﻿8.800°S 157.767°E﻿ / -8.800; 157.767) and was abandoned. |
| F 420 | Kriegsmarine | The Type C Marinefahrprahm was sunk on this date. |
| HMS Itchen | Royal Navy | World War II: Convoys ONS 18/ON 202: The River-class frigate (1,370/1,920 t, 1942) was torpedoed and sunk in the Atlantic Ocean by U-666 ( Kriegsmarine) with The loss of all but one of her crew. |
| Jenny | Germany | World War II: The coastal tanker was sunk at Nantes, Loire-Inférieure during an American air raid. |
| Julia Luckenbach | United States | The cargo ship collided with British Resolution ( United Kingdom) and sank in the Indian Ocean (34°33′S 22°06′E﻿ / ﻿34.550°S 22.100°E﻿ / -34.550; 22.100). |
| Katsurahama Maru | Japan | World War II: The coaster was torpedoed and sunk in the East China Sea by USS Snook ( United States Navy). |
| Lydia | Romania | World War II: The barge was sunk by a mine in the Black Sea. Raised, but not repaired. |
| M-51 | Soviet Navy | The M-class submarine sank in the Black Sea off Ochemiri in a diving accident. She was raised on 25 September, repaired, and returned to service in 1944. |
| HMT Ocean Retriever | Royal Navy | World War II: The naval trawler (95 GRT, 1912) struck a mine and sank in the Thames Estuary with the loss of all eleven crew. |
| Richard Olney | United States | World War II: The Liberty ship struck a mine and was damaged in the Mediterranean Sea (37°25′N 9°54′E﻿ / ﻿37.417°N 9.900°E﻿ / 37.417; 9.900). She was towed to Bizerta, Algeria but was declared a constructive total loss. Two crew were killed. |
| Rovigno | Italy | World War II: The passenger ship was torpedoed and sunk by British MTB 89 at the pier in Vlorë, Albania. |
| SNS-786 | Romania | World War II: The lighter was sunk by a mine in the Black Sea. |
| Sperone | Italy | World War II: The tugboat was sunk by a German mine off Taranto. They were 97 dead and 51 survivors. |
| U-229 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged, shelled, rammed and sunk in the Atlantic Ocean south east of Cape Farewell, Greenland (54°36′N 36°25′W﻿ / ﻿54.600°N 36.417°W﻿ / 54.600; -36.417) by HMS Keppel ( Royal Navy) with the loss of all 50 crew. |

## 23 September

List of shipwrecks: 23 September 1943 :
| Ship | State | Description |
| Daisin Maru | Japan | World War II: The tanker was torpedoed and sunk in the Pacific Ocean south of Honshu (34°15′N 137°00′E﻿ / ﻿34.250°N 137.000°E﻿ / 34.250; 137.000) by USS Harder ( United States Navy). |
| Dithmarschen | Germany | World War II: The cargo ship was torpedoed and sunk in the Aegean Sea by Allied aircraft. |
| Gaetano Donizetti | Germany | World War II: The troopship was shelled and sunk in the Aegean Sea by the destroyer HMS Eclipse ( Royal Navy) with the loss of at least 1,576 lives, most of them Italian prisoners. |
| Ermland | Germany | World War II: The tanker was sunk at Nantes, Loire-Inférieure, France during an American air raid. |
| FL 08 Notre Dame de Laghet | Kriegsmarine | The naval trawler was lost on this date. |
| Fort Jemseg | United Kingdom | World War II: Convoy ON 202: The Fort ship (7,134 GRT, 1942) was torpedoed and sunk in the Atlantic Ocean (53°18′N 40°24′W﻿ / ﻿53.300°N 40.400°W﻿ / 53.300; -40.400) by U-238 ( Kriegsmarine) with the loss of one of her 53 crew. Survivors were rescued by Romulus ( Norway) and HMT Northern Foam ( Royal Navy). |
| Kertosono | Germany | World War II: The cargo liner (9,289 GRT) was bombed by Allied aircraft at Nantes and was burnt out. |
| Kowa Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Honshu by USS Harder ( United States Navy). |
| Kulmerland | Kriegsmarine | World War II: The supply ship was bombed and sunk at Nantes during an American Air raid. Raised in 1946, and scrapped in 1950 at Briton Ferry, United Kingdom. Also reported as Tokyo Maru ( Japan). |
| M-119 | Kriegsmarine | World War II: The Type 1915 minesweeper was scuttled in Italy. |
| Oregon Express | Norway | World War II: Convoy ON 202: The cargo ship (3,642 GRT, 1933) was torpedoed and sunk in the Atlantic Ocean (53°40′N 39°50′W﻿ / ﻿53.667°N 39.833°W﻿ / 53.667; -39.833) by U-238 ( Kriegsmarine) with the loss of eight of her 45 crew. Survivors were rescued by Kingman ( Panama) and Romulus ( Norway). |
| R 30 | Kriegsmarine | World War II: The R-25-class minesweeper was sunk in the Black Sea off Kerch, Soviet Union by Soviet aircraft. |
| R 93 | Kriegsmarine | World War II: The minesweeper struck a mine and sank in the North Sea off Dunkerque Nord, France. |
| Ryotoku Maru | Imperial Japanese Navy | World War II: Convoy 3916: The Ryotoku-class auxiliary transport ship was torpedoed and sunk in the Surigao Strait, or about 135 nautical miles (250 km; 155 mi) west of Urracas (Farallon de Pajaros), northern Marianas by USS Trout ( United States Navy). |
| SG 2 | Kriegsmarine | World War II: The Sans Souci-class sloop was bombed and sunk at Nantes by Allied aircraft with the loss of two lives. |
| Skjelbred | Norway | World War II: Convoy ON 202: The tanker (5,096 GRT, 1937) was torpedoed and sunk in the Atlantic Ocean (53°18′N 40°24′W﻿ / ﻿53.300°N 40.400°W﻿ / 53.300; -40.400 by U-238 ( Kriegsmarine). All 43 crew were rescued by HMT Northern Foam ( Royal Navy). |
| Steel Voyager | United States | World War II: Convoys ONS 18/ON 202: The cargo ship was torpedoed and sunk in the Atlantic Ocean (53°18′N 40°24′W﻿ / ﻿53.300°N 40.400°W﻿ / 53.300; -40.400) by U-952 ( Kriegsmarine). All 66 crew were rescued by HMCS Morden ( Royal Canadian Navy) and Renoncule ( Free French Naval Forces). |
| Saint Nazaire | Germany | World War II: The cargo ship was torpedoed and sunk in the Mediterranean Sea off Corsica (44°13′N 9°13′E﻿ / ﻿44.217°N 9.217°E﻿ / 44.217; 9.217) by HMS Sibyl ( Royal Navy). There were 38 dead and 21 survivors. |
| TA10 | Kriegsmarine | World War II: The La Melpomène-class torpedo boat was heavily damaged by HMS Eclipse ( Royal Navy) off Rhodes. She was scuttled on 27 September in Prassas Bay. |
| Vieste | Regia Marina | World War II: The captured Crotone-class minelayer was scuttled by the Germans. |
| Wangerland | Germany | World War II: The tanker was sunk at Nantes during an American air raid. |
| Yamashiro Maru | Imperial Japanese Army | World War II: Convoy 3916: The transport was torpedoed and sunk in the Surigao Strait, or about 135 nautical miles (250 km; 155 mi) west of Urracas (Farallon de Pajaros), northern Marianas, by USS Trout ( United States Navy) with the loss of four crewmen and seven passengers. |

## 24 September

List of shipwrecks: 24 September 1943 :
| Ship | State | Description |
| Elias Howe | United States | World War II: The Liberty ship was torpedoed and sunk in the Gulf of Aden 75 nautical miles (139 km) south east of Aden (11°35′N 45°50′E﻿ / ﻿11.583°N 45.833°E﻿ / 11.583; 45.833) by I-10 ( Imperial Japanese Navy) with the loss of 2 crew. The 58 survivors were rescued by HMS Aiglon ( Royal Navy) and a seaplane. |
| F 217 | Kriegsmarine | World War II: The Type A Marinefahrprahm was heavily damaged by Soviet aircraft in Kerch. She was not repaired and finally scuttled in November 1943. There were no casualties. |
| Francesco Stocco | Regia Marina | World War II: The Giuseppe Sirtori-class torpedo boat was sunk by German aircraft off Corfu with the loss of 103 crew. |
| HMS LCA 675 | Royal Navy | The landing craft assault (9/12 t, 1943) was lost on this date. |
| HMS MMS 70 | Royal Navy | World War II: The MMS-class minesweeper (225/295 t, 1942) was sunk by a mine in the Gulf of Taranto with the loss of 10 crew. |
| Mostun | Norway | World War II: The cargo ship struck a mine and sank in Gulenfjord, Norway. She was raised the next day, repaired and returned to service. |
| Trapez I | Kriegsmarine | World War II: The cargo ship was torpedoed by Dzik ( Polish Navy) and HMS Ultor ( Royal Navy) 11 nautical miles (20 km) north east of Bastia, Corsica, Italy and was beached south of Bastia. She was torpedoed on 2 September by HMS Uproar ( Royal Navy) and was a total loss. |

## 25 September

List of shipwrecks: 25 September 1943 :
| Ship | State | Description |
| Azuchi Maru | Imperial Japanese Navy | The Yatsushiro Maru-class naval trawler/auxiliary storeship disappeared without a trace with her 24 crew between Kusai and Nauru, possibly a maritime hazard. |
| DB-18 | Soviet Navy | The No. 1-class landing boats was lost. |
| DB-31 | Soviet Navy | The No. 1-class landing boats was lost. |
| HMT Donna Nook | Royal Navy | World War II: The naval trawler (307 GRT, 1916) was rammed and sunk in the North Sea off Harwich, Essex by HMT Stella Rigel ( Royal Navy) while engaging Kriegsmarine E-boats. All crew were rescued. |
| Dubac | Italy | World War II: The cargo ship was evacuating Italian troops from Albania when she bombed by German aircraft in the Strait of Otranto and ran aground to avoid sinking. More than 200 men were killed. The wreck sank some days later and was scrapped after the war. |
| HMT Franc Tireur | Royal Navy | World War II: The naval trawler (314 GRT, 1916) was torpedoed and sunk in the North Sea off Harwich by S 96 ( Kriegsmarine) with the loss of all 15 crew. |
| Kirishima Maru | Imperial Japanese Navy | World War II: Convoy SA-12: The Kirishima Maru-class auxiliary oiler was torpedoed and sunk in the South China Sea (09°53′N 112°10′E﻿ / ﻿9.883°N 112.167°E﻿ / 9.883; 112.167) by USS Bowfin ( United States Navy). 14 crew were killed. Her captain and 61 crew rescued by CH-19 ( Imperial Japanese Navy). |
| LS 6 | Kriegsmarine | The LS 2-class light schnellboot was lost on this date. |
| Moliere | Kriegsmarine | The auxiliary river minesweeper was sunk on this date. |
| Monsun | Germany | World War II: The tanker was sunk at Nantes, Loire-Inférieure, France during an American air raid. |
| MS 21 | Regia Marina | World War II: The MS 11-class E-boat was scuttled at Gatea. |
| Nordstern | Germany | World War II: The ship was sunk at Nantes during an American air raid. |
| Probitas | Italy | World War II: The cargo ship was bombed and sunk in the Adriatic Sea off Santi Quaranta, Albania by Luftwaffe aircraft. She was on a voyage from Santi Quaranta to Brindisi. |
| S 96 | Kriegsmarine | World War II: The E-boat was rammed and damaged in the North Sea off the Sunk Lightship ( United Kingdom) by HMML 145 and HMML 150 (both Royal Navy) and was abandoned. Thirteen crew were rescued by HMML 145 and taken as prisoners of war. |
| San Pablo | Panama | The cargo ship was sunk as a target in the Gulf of Mexico nine nautical miles (17 km; 10 mi) southeast of the Pensacola Pass (30°11′N 87°13′W﻿ / ﻿30.183°N 87.217°W﻿ / 30.183; -87.217). Wreck eventually dispersed with explosives. |
| USS Skill | United States Navy | World War II: The Auk-class minesweeper was torpedoed and sunk in the Gulf of Salerno (40°20′N 14°35′E﻿ / ﻿40.333°N 14.583°E﻿ / 40.333; 14.583) by U-593 ( Kriegsmarine) with the loss of 72 of her 103 crew. Survivors were rescued by USS Speed ( United States Navy). |
| Taiko Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Pompano and USS Wahoo (both United States Navy). |
| V 316 | Kriegsmarine | World War II: The Ekwator-class Vorpostenboot was torpedoed by British aircraft in the North Sea off Camperdown, and either beached, or sunk, off Den Helder, North Holland. |

## 26 September

List of shipwrecks: 26 September 1943 :
| Ship | State | Description |
| Christian Michelsen | Norway | World War II: Convoy UGS 17: The cargo ship (7,176 GRT, 1943) was torpedoed and sunk in the Mediterranean Sea (37°12′N 8°26′E﻿ / ﻿37.200°N 8.433°E﻿ / 37.200; 8.433) by U-410 ( Kriegsmarine) with the loss of 47 of the 50 people on board. |
| DB-13 | Soviet Navy | The No. 1-class landing boat was lost. |
| DB-28 | Soviet Navy | The No. 1-class landing boat was lost. |
| DB-38 | Soviet Navy | The No. 1-class landing boat was lost. |
| Ellinico Horio | Germany | World War II: The coaster was seized during the night by its Greek crew and Italian prisoners of war and tried to escape. She was sunk by German aircraft off Karpathos with no survivors. |
| Hildegard | Germany | World War II: The cargo ship was torpedoed and sunk in the Baltic Sea off Ventspils, Latvia by a Soviet Ilyushin Il-4 aircraft. |
| HMS Intrepid | Royal Navy | World War II: The I-class destroyer (1,370/1,888 t, 1937) was bombed and sunk at Leros, Greece by Junkers Ju 88 aircraft of the Luftwaffe with the loss of 15 crew. Survivors were rescued by HMML 354, HMML 356 and HMML 836 (all Royal Navy). |
| Itapagé | Brazil | World War II: The cargo liner was torpedoed and sunk in the Atlantic Ocean (10°05′S 35°54′W﻿ / ﻿10.083°S 35.900°W﻿ / -10.083; -35.900) by U-161 ( Kriegsmarine) with the loss of 22 of the 107 people on board. |
| Kasasagi | Imperial Japanese Navy | World War II: The Ōtori-class torpedo boat was torpedoed and sunk in the Flores Sea (05°00′S 121°57′E﻿ / ﻿5.000°S 121.950°E﻿ / -5.000; 121.950) by USS Bluefish ( United States Navy). |
| MAS 534 | Regia Marina | World War II: The MAS 526-class MAS boat was sunk off Leros by German aircraft. |
| RA 267 | Kriegsmarine | World War II: The VAS 231-class submarine chaser was scuttled by the Germans after they captured her earlier in the month. |
| RA 268 | Kriegsmarine | World War II: The VAS 231-class submarine chaser was scuttled by the Germans after they captured her earlier in the month. |
| UJ 2218 Tadorna | Kriegsmarine | The submarine chaser ran aground near Ardenza, Italy, and was wrecked. |
| Vasilissa Olga | Hellenic Navy | World War II: The G-class destroyer was bombed and sunk at Leros by Junkers Ju 88 aircraft of the Luftwaffe with the loss of 72 of her 145 crew. Survivors were rescued by HMML 354, HMML 356 and HMML 836 (all Royal Navy). |

## 27 September

List of shipwrecks: 27 September 1943 :
| Ship | State | Description |
| Arare Maru | Imperial Japanese Army | World War II: Operation Jaywick: The tanker was mined and sunk by Australian Commandos using limpet mines at Singapore. One crewman was killed. She was raised, repairs finished 28 December, and returned to service. |
| Champagne | Germany | World War II: The tanker was torpedoed and sunk in the Mediterranean Sea off Corsica by HMS Ultor, HMS Uproar (both Royal Navy) and ORP Dzik ( Polish Navy). |
| Elsi | Germany | World War II: The transport ship (1,433 GRT, 1891) was sailing from Piraeus to Argostoli to pick up Italian prisoners of war where she hit a mine south of Cephalonia and sank. There were no casualties. |
| Enrico Cosenz | Regia Marina | World War II: The torpedo boat, a former La Masa-class destroyer, was scuttled on 27 September off in the Adriatic Sea off Lastovo after suffering damage in a collision on 25 September and in a German air raid earlier on 27 September. |
| Fuji Maru | Japan | World War II: The cargo ship was bombed and sunk off Wewak, New Guinea by American aircraft. |
| Hakusan Maru | Imperial Japanese Army | World War II: Operation Jaywick: The Taiyei Maru-class auxiliary transport (2,197 GRT 1920), being used as a tanker, was mined and sunk by Australian Commandos using limpet mines at Singapore (01°18′N 103°52′E﻿ / ﻿1.300°N 103.867°E﻿ / 1.300; 103.867). |
| Jungingen | Kriegsmarine | World War II: The R boat tender, a converted Type 1916 minesweeper, was torpedoed and sunk in the English Channel southwest of Berck-sur-Mer, Pas-de-Calais, France, when here convoy was attacked by Dutch and British MTB and SGB. 23 crew were killed. |
| Kashima Maru | Japan | World War II: Convoy No. 324: The Imperial Japanese Army transport was torpedoed and sunk in the Pacific Ocean (31°35′N 127°47′E﻿ / ﻿31.583°N 127.783°E﻿ / 31.583; 127.783) by USS Bonefish ( United States Navy). 139 troops/passengers and one crew were killed. |
| Kiri Maru | Japan | World War II: The cargo ship was bombed and sunk off Wewak by American aircraft. |
| Kizan Maru | Imperial Japanese Army | World War II: Operation Jaywick: The Kizan Maru-class auxiliary transport was mined and sunk by Australian Commandos using limpet mines at Singapore. One crew member was killed. The wreck was broken up in July 1944. |
| M 4616 | Kriegsmarine | The minesweeper ran aground at Aberwrac'h, Finistère, France and was wrecked. |
| Madali | Germany | World War II: The cargo ship was torpedoed and sunk in the English Channel south west of Berck-sur-Mer (50°22′03″N 1°04′02″E﻿ / ﻿50.36750°N 1.06722°E﻿ / 50.36750; 1.06722) by HMMTB 202, HMMTB 204, HMMTB 231, HMSGB 4 Grey Fox (all Royal Navy) with the loss of 52 lives. |
| No. 24 | Soviet Navy | The G-5-class motor torpedo boat was lost on this date. |
| Sakihana Maru | Japan | World War II: The cargo ship was bombed and sunk off Wewak by American aircraft. |
| Taisei Maru | Japan | World War II: Convoy Wewak No.9: The transport ship was bombed and sunk north of Wewak by American aircraft. Six gunners and seven crew were killed. |
| Taisho Maru | Japan | World War II: The cargo ship was bombed and sunk off Wewak by American aircraft. |
| U-161 | Kriegsmarine | World War II: The Type IXC submarine was depth charged and sunk in the Atlantic Ocean (12°30′S 35°35′W﻿ / ﻿12.500°S 35.583°W﻿ / -12.500; -35.583) by Martin PBM Mariner aircraft of the United States Navy with the loss of all 53 crew and one survivor from St Usk ( United Kingdom) who had been taken aboard as a prisoner of war. |
| U-221 | Kriegsmarine | World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean (approximately 47°00′N 18°00′W﻿ / ﻿47.000°N 18.000°W﻿ / 47.000; -18.000) by a Handley Page Halifax aircraft of 58 Squadron, Royal Air Force with the loss of all 50 crew. |
| V 1501 Wiking 7 | Kriegsmarine | World War II: The Vorpostenboot/naval whaler was torpedoed and sunk in the English Channel off Cap d'Antifer, Seine-Inférieure, France by HMMGB 108 HMMGB 117 and HMMGB 118 (all Royal Navy). |
| V 5705 Elsaß | Kriegsmarine | World War II: The Vorpostenboot/naval whaler struck a mine and sank in the Norwegian Sea off Bodø, Norway with the loss of 19 crew. |

## 28 September

List of shipwrecks: 28 September 1943 :
| Ship | State | Description |
| Akashi Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Bluefish ( United States Navy). |
| Ardena | Kriegsmarine | World War II: The passenger ferry (1,092 GRT, 1915), a former Azalea-class sloop, was sailing from Cephalonia to Greece with 840 Italian prisoners of war when she hit a mine off Argostoli and sank. 720 Italian prisoners of war were killed. |
| USS Cisco | United States Navy | World War II: The Balao-class submarine was bombed, depth charged and sunk in the Sulu Sea west of Negros, Philippines (9°47′N 121°44′E﻿ / ﻿9.783°N 121.733°E﻿ / 9.783; 121.733) by Japanese aircraft and Karatsu ( Imperial Japanese Navy). |
| Giulio Germanico | Regia Marina | World War II: The 94% complete Capitani Romani-class cruiser was scuttled by the Germans at Castellammare di Stabia. Raised and completed 1953–1955 and put in Italian Navy service as San Marco. |
| Hoko | Imperial Japanese Navy | World War II: The Hirashima-class minelayer was bombed and sunk 20 nautical miles (37 km) east of Buka, Bouganville (05°00′S 154°30′E﻿ / ﻿5.000°S 154.500°E﻿ / -5.000; 154.500) by American aircraft. |
| HMS LCP(R) 1019 | Royal Navy | The landing craft, personnel (ramped) was lost on this date. |
| KATSh-155 | Soviet Navy | World War II: The auxiliary minesweeping boat was sunk in the Black Sea by S 28, S 42, S 45 and S 49 (all Kriegsmarine). |
| Nord-Vest | Soviet Navy | World War II: The sail auxiliary minesweeping boat was sunk in the Black Sea by S 28, S 42, S 45 and S 49 (all Kriegsmarine). |
| Taian Maru | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean southwest of Anatahan Island, Marianas, by USS Gudgeon ( United States Navy) with the loss of 60 lives (46 passengers and 14 crew). |
| VAS 205 | Kriegsmarine | World War II: The VAS 205-class submarine chaser was scuttled by the Germans off Ischia Island after capturing her earlier in the month. She was raised post-war, repaired and returned to service. |

## 29 September

List of shipwrecks: 29 September 1943 :
| Ship | State | Description |
| Banffshire | United Kingdom | World War II: The cargo ship (6,479 GRT, 1912) was torpedoed and sunk in the Arabian Sea north west of the Maldive Islands (9°26′N 71°20′E﻿ / ﻿9.433°N 71.333°E﻿ / 9.433; 71.333) by U-532 ( Kriegsmarine) with the loss of one of her 100 crew. Survivors were rescued by HMS Rajputana ( Royal Navy). |
| Dunay II | Soviet Union | World War II: The lighter was torpedoed and sunk in the Black Sea by U-20 ( Kriegsmarine). |
| Danaiskaya 2 | Soviet Union | World War II: The barge was sunk by mines in the Tuganrog Gulf. 182 crew and passengers killed. |
| USS LCT-342 | United States Navy | The LCT-1-class landing craft tank was lost by grounding off Salerno, Italy. |
| Masaki Maru No. 2 | Japan | World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Wahoo ( United States Navy). |

## 30 September

List of shipwrecks: 30 September 1943 :
| Ship | State | Description |
| Arkhangel'sk | Soviet Union | World War II: Convoy VA 18: The cargo ship was torpedoed and sunk in the Kara Sea west of Russkij Island (76°54′N 92°29′E﻿ / ﻿76.900°N 92.483°E﻿ / 76.900; 92.483) by U-960 ( Kriegsmarine) with the loss of seventeen of her 42 crew. Survivors were rescued by T-886 ( Soviet Navy). |
| Dea Mazzella | Germany | World War II: The cargo ship was shelled and sunk in the Adriatic Sea south of Šebenik, Yugoslavia by Yugoslav shore-based artillery. |
| HMS LCT 2231 | Royal Navy | World War II: The LCT-5-class landing craft tank (9/12 t, 1943) was lost as cargo aboard HMS LST 79 ( Royal Navy) when she was sunk at Ajaccio, Corsica, France. There were no casualty. |
| HMS LST 79 | Royal Navy | World War II: The LST-1-class landing ship tank (1,625/4,080 t, 1943) was sunk by German aircraft at Ajaccio. Four crew were killed and another died of his wounds 15 days later. Seven RAF radar personnel were also probably killed in this attack. |
| M 7022 Hummer | Kriegsmarine | World War II: The minesweeper, a converted Heilbutt-class patrol ship, was torpedoed and sunk in the Mediterranean Sea east of Bastia by HMS Sibyl ( Royal Navy). |
| Maebashi Maru | Imperial Japanese Army | World War II: Convoy SO-805: The Lyons Maru-class transport was torpedoed and sunk in the Pacific Ocean 373 nautical miles (691 km) east south east of Palau (01°00′N 139°28′E﻿ / ﻿1.000°N 139.467°E﻿ / 1.000; 139.467) by USS Pogy ( United States Navy). A total of 1,389 troops, thirteen gunners, and 48 crew were killed. |
| Sanct Svithun | Norway | World War II: The passenger ship (1,376 GRT, 1927) was bombed and sunk off the Stad Peninsula, Norway, by Bristol Beaufighter aircraft of 404 Squadron Royal Canadian Air Force. Between 19 and 20 Norwegian crew, 22 and 26 Norwegian passengers and 10 and 20 German soldiers lost their lives. |
| USCGC Wilcox | United States Navy | The patrol vessel foundered in a gale off of Nags Head, North Carolina. One crew was lost, 37 survived. |
| Züllchow 17 | Germany | World War II: The lighter was torpedoed and sunk in the Baltic Sea off Steinort by a Soviet Ilyushin Il-4 aircraft. |

## Unknown date

List of shipwrecks: Unknown date 1943 :
| Ship | State | Description |
| Acqui | Italy | World War II: The cargo ship was scuttled at La Spezia. She was subsequently raised by the Germans, repaired and entered Kriegsmarin service as the minelayer Niedersachsen. |
| Ancona | Italy | World War II: The cargo ship was sunk as a blockship at Savona by the Germans. She was floated in 1946 and scrapped. |
| Caio Mario | Regia Marina | World War II: The Capitani Romani-class cruiser was scuttled at La Spezia. |
| Duilio | Italy | World War II: The passenger ship was scuttled at Trieste. She was subsequently salvaged and taken in to German service. |
| HMS Gallant | Royal Navy | World War II: The G-class destroyer was scuttled as a blockship at St Paul's Island, Malta. |
| USS Grayling | United States Navy | World War II: The Tambor-class submarine was sunk by enemy action in the South China Sea between 9 and 12 September with the loss of all 60 crew. |
| K-1 | Soviet Navy | World War II: The K-class submarine was lost in the Kara Sea between 9 and 21 September. |
| USS LCT-209 | United States Navy | World War II: The LCT Mk 5-class landing craft tank was destroyed at Salerno, Italy by the explosion of Bushrod Washington ( United States) on 15 September 1943 during the Battle of Salerno, or lost off Normandy, France, on 10 or 19 June 1944. |
| Mont Agel | France | World War II: The cargo ship was bombed and sunk at Bastia, Corsica. The wreck was scrapped in 1947. |
| Re Alessandro | Italy | World War II: The cargo ship was driven ashore near Patras, Greece. She was subsequently shelled by land-based artillery and was consequently declared a total loss. |
| SG 22 | Kriegsmarine | World War II: The Élan-class corvette was scuttled at Livorno. She was scrapped in 1946. |
| Sileno | Italy | World War II: The cargo ship was sunk at Naples by the Germans. She was refloated in 1948 and scrapped. |
| Ugo Botti | Regia Marina | World War II: The coaster was scuttled by partisans at Split to prevent capture by the Germans. Raised by Yugoslavia in November 1944, repaired and returned to service in 1945 as Knin. |
| Volodda | Italy | World War II: The cargo ship was scuttled at Bari. She was refloated in 1947, repaired and returned to service. |