# List of shipwrecks in October 1918

The list of shipwrecks in October 1918 includes ships sunk, foundered, grounded, or otherwise lost during October 1918.

## 1 October

List of shipwrecks: 1 October 1918 :
| Ship | State | Description |
| Aldebaran | Sweden | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 7 nautical miles (13 km) off the Wolf Rock, Cornwall, United Kingdom (49°54′N 5°59′W﻿ / ﻿49.900°N 5.983°W﻿ / 49.900; -5.983) by SM UB-112 ( Imperial German Navy) with the loss of all nineteen crew. |
| Bylands | United Kingdom | World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 150 nautical miles (280 km) north-northwest of Cape Villano, Spain by SM U-139 ( Imperial German Navy). Her crew survived. |
| Francoli | Spain | World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 14 nautical miles (26 km) east of Cape Palos, Murcia by SM UB-49 ( Imperial German Navy). Her fourteen crew were rescued by a French merchant vessel. |
| Giuseppino M. | Italy | World War I: The sailing vessel was sunk in the Gulf of Salerno by SM UC-53 ( Imperial German Navy). |
| Gjertrud | Norway | World War I: The coaster was sunk in the Atlantic Ocean 2 nautical miles (3.7 km) west of The Lizard, Cornwall by SM UB-112 ( Imperial German Navy) with the loss of eleven of her crew. |
| Manin | Italy | World War I: The cargo ship was sunk in the Atlantic Ocean 150 nautical miles (280 km) north north west of Cape Villano by SM U-139 ( Imperial German Navy). |
| Montfort | United Kingdom | World War I: Convoy OD 128: The cargo ship was torpedoed and damaged in the Atlantic Ocean 170 nautical miles (310 km) west south west of the Bishop Rock, Isles of Scilly (48°00′N 10°20′W﻿ / ﻿48.000°N 10.333°W﻿ / 48.000; -10.333) by SM U-55 ( Imperial German Navy) with the loss of five crew. She sank the next day. |
| S. Giuseppe A. | Italy | World War I: The sailing vessel was sunk in the Gulf of Salerno by SM UC-53 ( Imperial German Navy). |
| USS SC-60 | United States Navy | The submarine chaser sank in 45 feet (14 m) of water after colliding with the tanker Fred W. Waller ( United States) off New York City. Two members of her crew were killed. |
| Thèrese et Marthe | France | World War I: The fishing vessel was sunk in the Bay of Biscay (46°36′N 2°38′W﻿ / ﻿46.600°N 2.633°W﻿ / 46.600; -2.633) by SM U-91 ( Imperial German Navy). |
| Vanya | Soviet Navy Red Movement | Russian Civil War: The gunboat was shelled by artillery and White ships, plus fired on by infantry, and sunk on the Kama River. 30 crewman killed including her commanding officer, 48 rescued. |

## 2 October

List of shipwrecks: 2 October 1918 :
| Ship | State | Description |
| HMS Arca | Royal Navy | World War I: The tanker was torpedoed and sunk in the Atlantic Ocean 40 nautical miles (74 km) north west by west of Tory Island, County Donegal (55°45′N 7°35′W﻿ / ﻿55.750°N 7.583°W﻿ / 55.750; -7.583) by SM U-118 ( Imperial German Navy) with the loss of 52 crew. |
| Avé Marie Stella | France | World War I: The fishing vessel was shelled and sunk in the Bay of Biscay (45°59′N 2°14′W﻿ / ﻿45.983°N 2.233°W﻿ / 45.983; -2.233) by SM U-91 ( Imperial German Navy). |
| Bamse | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 5 nautical miles (9.3 km) east of The Lizard, Cornwall by SM UB-112 ( Imperial German Navy) with the loss of eleven of her crew. |
| Keltier | Belgium | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean (46°16′N 9°52′W﻿ / ﻿46.267°N 9.867°W﻿ / 46.267; -9.867﻿ (SS Keltier)) by U-55 ( Imperial German Navy). The crew took to the lifeboats but were not recovered. |
| Maia | France | World War I: The schooner was shelled and sunk in the Bay of Biscay (45°25′N 1°48′W﻿ / ﻿45.417°N 1.800°W﻿ / 45.417; -1.800) by SM U-91 ( Imperial German Navy) with the loss of two of her crew. |
| Marie Emmanuel | France | World War I: The fishing vessel was shelled and sunk in the Bay of Biscay south of the Île d'Yeu, Finistère (46°33′N 2°23′W﻿ / ﻿46.550°N 2.383°W﻿ / 46.550; -2.383) by SM U-91 ( Imperial German Navy) with the loss of five of her crew. |
| Pioneer | United States | With no one on board, the 12-gross register ton, 45.9-foot (14.0 m) motor vessel was wrecked on Katalla Bar, a shoal off Katalla, Territory of Alaska. The wreck was not reported until 1926. |
| Poljames | United Kingdom | World War I: The coaster was torpedoed and sunk in the English Channel 6 nautical miles (11 km) south of The Lizard by SM UB-112 ( Imperial German Navy) with the loss of thirteen of her crew. |
| Rio Cávado | Portugal | World War I: The sailing vessel was sunk in the Atlantic Ocean 290 nautical miles (540 km) off Cape Prior, Spain by SM U-139 ( Imperial German Navy). |
| SMS Z | Imperial German Navy | World War I: The barracks ship was scuttled at Bruges, West Flanders, Belgium. |

## 3 October

List of shipwrecks: 3 October 1918 :
| Ship | State | Description |
| Alberto Treves | Italy | World War I: The cargo ship was sunk in the Atlantic Ocean 300 nautical miles (560 km) off the coast of the United States by SM U-155 ( Imperial German Navy). |
| Ariel | United Kingdom | World War I: Convoy BG 68: The cargo ship was torpedoed and sunk in the Mediterranean Sea 54 nautical miles (100 km) north of Cape Ténès, Algeria (37°36′N 1°08′E﻿ / ﻿37.600°N 1.133°E﻿ / 37.600; 1.133) by SM UB-105 ( Imperial German Navy). Her crew survived. |
| Atlantis | Norway | World War I: The cargo ship was sunk in the English Channel 6 nautical miles (11 km) south east of The Lizard, Cornwall, United Kingdom by SM UB-112 ( Imperial German Navy) with the loss of two of her crew. |
| Blasios | Greece | World War I: The sailing vessel was sunk in the Aegean Sea by SM UC-23 ( Imperial German Navy). |
| Burutu | United Kingdom | The ocean liner collided with another vessel and sank with heavy loss of life, at least 170 people were killed. |
| Eupion | United Kingdom | World War I: The tanker was torpedoed and sunk in the River Shannon by SM UB-90 ( Imperial German Navy) with the loss of eleven of her crew. |
| SMS G41 | Imperial German Navy | World War I: The V25-class torpedo boat was scuttled at Bruges, West Flanders, Belgium. |
| USS Herman Frasch | United States Navy | The collier collided with USS George G. Henry ( United States Navy) in the Atlantic Ocean 110 nautical miles (200 km) east of Cape Sable Island, Nova Scotia, Canada and sank with the loss of 24 of her 89 crew. |
| Lake City | United States | The steamer was sunk in a collision with James McGee ( United States) off American Shoal Light. Her master and 29 crewmen killed. |
| HMT Lustring | Royal Navy | The naval trawler was lost on this date. |
| SMS M | Imperial German Navy | World War I: The barracks ship was scuttled at Bruges. |
| SMS S33 | Imperial German Navy | World War I: The V25-class torpedo boat was torpedoed and sunk in the North Sea by HMS L10 ( Royal Navy). |
| SMS S34 | Imperial German Navy | World War I: The V25-class torpedo boat struck a mine and sank in the North Sea with the loss of 70 of her crew. |
| Saint Luc | France | World War I: Convoy BG 68: The cargo ship was torpedoed and sunk in the Mediterranean Sea 48 nautical miles (89 km) north of Cape Ténès (37°43′N 1°35′E﻿ / ﻿37.717°N 1.583°E﻿ / 37.717; 1.583) by SM UB-105 ( Imperial German Navy) with the loss of 29 of her crew. |
| SMS V74 | Imperial German Navy | World War I: The V25-class destroyer was scuttled at Bruges. |
| Westwood | United Kingdom | World War I: The collier was torpedoed and sunk in the Atlantic Ocean 5 nautical miles (9.3 km) south west of The Lizard by SM UB-112 ( Imperial German Navy) with the loss of a crew member. |

## 4 October

List of shipwrecks: 4 October 1918 :
| Ship | State | Description |
| HMT Coleus | Royal Navy | The naval trawler was lost on this date. |
| Hirano Maru | Japan | World War I: The passenger ship was sunk in the Atlantic Ocean 200 nautical miles (370 km) south of Ireland by SM UB-91 ( Imperial German Navy) with the loss of 292 of the 320 people on board. Some of the deceased were buried at Angle, Pembrokeshire, Wales. Many of the deceased were children. |
| Industrial | United Kingdom | World War I: The schooner was scuttled in the Atlantic Ocean 250 nautical miles (460 km) south east of Nantucket Island, Massachusetts, United States (37°57′N 66°41′W﻿ / ﻿37.950°N 66.683°W﻿ / 37.950; -66.683) by SM U-155 ( Imperial German Navy). Her crew survived. |
| SMS Johs. Thode | Imperial German Navy | The Vorpostenboot was lost on this date. |
| Kassid Karim | Egypt | World War I: The sailing vessel was shelled and sunk in the Mediterranean Sea 75 nautical miles (139 km) north of Alexandria by an enemy submarine. |
| HMS L10 | Royal Navy | World War I: The L-class submarine was sunk in the Heligoland Bight by SMS V28 and SMS V79 (both Imperial German Navy) with the loss of all 38 crew. |
| Mercedes | Spain | World War I: The cargo ship was sunk in the Atlantic Ocean off San Sebastián, Gipuzkoa (43°25′N 1°59′W﻿ / ﻿43.417°N 1.983°W﻿ / 43.417; -1.983) by SM U-91 ( Imperial German Navy). Her crew survived. |
| HMS M. J. Hedley | Royal Navy | The Q-ship capsized and sank on this date. |
| Nanna | Norway | World War I: The cargo ship was sunk in the Atlantic Ocean 10 nautical miles (19 km) west north west of The Lizard, Cornwall, United Kingdom by SM UB-112 ( Imperial German Navy) with the loss of nine of her crew. |
| Oceania | Austria-Hungary | The ship struck a mine in the Adriatic Sea off Cape Rodoni, Albania and was abandoned. The wreck was torpedoed and sunk by 16 ( Austro-Hungarian Navy). |
| Oopack | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 110 nautical miles (200 km) east of Malta (35°56′N 16°20′E﻿ / ﻿35.933°N 16.333°E﻿ / 35.933; 16.333) by SM UB-68 ( Imperial German Navy). Her crew survived. |
| San Saba | United States | World War I: The cargo ship struck a mine and sank in the Atlantic Ocean off the Barnegat Lighthouse, New Jersey (39°40′N 73°55′W﻿ / ﻿39.667°N 73.917°W﻿ / 39.667; -73.917) with the loss of 30 crew. |
| SM UB-68 | Imperial German Navy | World War I: The Type UB III submarine was shelled and sunk in the Mediterranean Sea (33°56′N 16°20′E﻿ / ﻿33.933°N 16.333°E﻿ / 33.933; 16.333) with the loss of one of her 34 crew. |
| Uranus | Russia | World War I: The brigantine was scuttled in the Atlantic Ocean south west of the Isles of Scilly, United Kingdom (46°42′N 12°23′W﻿ / ﻿46.700°N 12.383°W﻿ / 46.700; -12.383 by SM U-55 ( Imperial German Navy). Her crew took to the lifeboats, but were not recovered. |

## 5 October

List of shipwrecks: 5 October 1918 :
| Ship | State | Description |
| Bremerhaven | Imperial German Navy | World War I: The Greta-class Vorpostenboot was sunk by four Royal Navy torpedo boats 119 nautical miles (220 km; 137 mi) off Helgoland. |
| Erindring | United Kingdom | World War I: The cargo ship was sunk in the Bay of Biscay (43°27′N 2°24′W﻿ / ﻿43.450°N 2.400°W﻿ / 43.450; -2.400) by SM U-91 ( Imperial German Navy) with the loss of all 22 crew. |
| Gelderland | Germany | World War I: The cargo ship was scuttled at Bruges, West Flanders, Belgium. |
| Hagios Marcos | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Heathpark | United Kingdom | World War I: The cargo ship was sunk in the Bay of Biscay (43°27′N 2°18′W﻿ / ﻿43.450°N 2.300°W﻿ / 43.450; -2.300) by SM U-91 ( Imperial German Navy) with the loss of all eighteen crew. |
| Maria | Spain | World War I: The schooner was torpedoed and sunk in the Gulf of Salonica. |
| Maria | Spain | World War I: The cargo ship was sunk in the Gulf of Salonica (39°58′N 23°07′E﻿ / ﻿39.967°N 23.117°E﻿ / 39.967; 23.117) by SM UC-23 ( Imperial German Navy). Her crew survived. |
| Marigo | France | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| USS Mary Alice | United States Navy | The patrol vessel was rammed and sunk in the long Island Sound off Bridgeport, Connecticut by USS O-13 ( United States Navy). Her crew were rescued by USS O-13. |
| Reventazon | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Gulf of Salonica 14 nautical miles (26 km) west by south of Kassandra Point, Greece by SM UC-23 ( Imperial German Navy) with the loss of fifteen of her crew. |
| Rio Pardo | Germany | World War I: The cargo ship was scuttled at Bruges. |
| SMS T122 | Imperial German Navy | World War I: The S90-class torpedo boat struck a mine and sank in the North Sea with the loss of twelve of her crew. |
| SM UB-10 | Imperial German Navy | World War I: The Type UB I submarine was scuttled in the North Sea off Zeebrugge, West Flanders, Belgium (51°21′N 3°12′E﻿ / ﻿51.350°N 3.200°E﻿ / 51.350; 3.200). |
| SM UB-40 | Imperial German Navy | World War I: The Type UB II submarine was scuttled in the North Sea off Ostend, West Flanders, Belgium. |
| SM UB-59 | Imperial German Navy | World War I: The Type UB III submarine was scuttled in the North Sea off Zeebrugge (51°19′N 3°12′E﻿ / ﻿51.317°N 3.200°E﻿ / 51.317; 3.200). |
| SM UC-4 | Imperial German Navy | World War I: The Type UC I submarine was scuttled in the North Sea off the coast of West Flanders (51°22′N 3°12′E﻿ / ﻿51.367°N 3.200°E﻿ / 51.367; 3.200). |

## 6 October

List of shipwrecks: 6 October 1918 :
| Ship | State | Description |
| HMS C12 | Royal Navy | The C-class submarine collided with a destroyer in the Humber Estuary and sank. She was subsequently raised, repaired and returned to service. |
| HMS Otranto | Royal Navy | The armed merchant cruiser collided with HMS Kashmir ( Royal Navy) in the Atlantic Ocean northeast of Ireland and was holed. She was driven ashore and wrecked with the loss of 431 lives. |

## 7 October

List of shipwrecks: 7 October 1918 :
| Ship | State | Description |
| HMT Kalmia | Royal Navy | The naval trawler was lost in the Mediterranean Sea on this date. |
| Madeira | Portugal | World War I: The cargo ship was sunk in the Mediterranean Sea off San Pietro Island, Italy by SM UB-105 ( Imperial German Navy). Her crew survived. |
| HMT Ocean Foam | Royal Navy | The naval trawler was lost on this date. |
| Saint Barnabe | France | World War I: The cargo ship was sunk in the Mediterranean Sea 38 nautical miles (70 km) east of San Pietro Island by SM UB-105 ( Imperial German Navy). |
| Trud | Russian Navy White Movement | Russian Civil War: The gunboat was sunk on the Kama River by mines. |
| USS West Gate | United States Navy | The cargo ship collided with USS American ( United States Navy) in the Atlantic Ocean 250 nautical miles (460 km) south east of Halifax, Nova Scotia, Canada and sank with the loss of seven crew. |

## 8 October

List of shipwrecks: 8 October 1918 :
| Ship | State | Description |
| Cazengo | Portugal | World War I: The cargo ship was sunk in the Bay of Biscay off Saint-Jean-de-Luz, Basses-Pyrénées, France (44°16′N 1°20′W﻿ / ﻿44.267°N 1.333°W﻿ / 44.267; -1.333) by SM U-91 ( Imperial German Navy). Her crew survived. |
| Hawanee | United Kingdom | World War I: The schooner was scuttled in the Atlantic Ocean 350 nautical miles (650 km) off Cape Finisterre, Spain (42°55′N 7°41′W﻿ / ﻿42.917°N 7.683°W﻿ / 42.917; -7.683) by SM U-157 ( Imperial German Navy). Her crew survived. |
| Thalia | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 4 nautical miles (7.4 km) east south east of Filey, Yorkshire by SM UC-17 ( Imperial German Navy) with the loss of three of her crew. |

## 9 October

List of shipwrecks: 9 October 1918 :
| Ship | State | Description |
| Pierre | France | World War I: The three-masted schooner was shelled and sunk in the Bay of Biscay (43°49′N 1°34′W﻿ / ﻿43.817°N 1.567°W﻿ / 43.817; -1.567) by SM U-91 ( Imperial German Navy). Her crew survived. |
| USS SC-219 | United States Navy | The SC-1 class Submarine chaser sank in the Mid-Atlantic Ocean between Bermuda and the Azores due to an explosion and fire while refueling alongside USS Chestnut Hill. 4 killed, 8 wounded. |

## 10 October

List of shipwrecks: 10 October 1918 :
| Ship | State | Description |
| André | France | World War I: The sailing vessel was shelled and sunk in the Atlantic Ocean west of the Isles of Scilly, United Kingdom by SM U-55 ( Imperial German Navy). |
| Leinster | United Kingdom | World War I: The troopship was torpedoed and sunk in the Irish Sea (53°19′N 5°47′W﻿ / ﻿53.317°N 5.783°W﻿ / 53.317; -5.783) by SM UB-123 ( Imperial German Navy) with the loss of 523 lives. Survivors were rescued by HMY Helga, HMS Lively, HMS Mallard, HMS Seal (all Royal Navy). |
| SMS Senator Schroder | Imperial German Navy | The Vorpostenboot was scuttled at Ostend, West Flanders, Belgium. |

## 11 October

List of shipwrecks: 11 October 1918 :
| Ship | State | Description |
| Luksefjell | Norway | World War I: The cargo ship was sunk in the Bay of Biscay 8 nautical miles (15 km) west north west of Capbreton, Landes, France (43°41′N 1°37′W﻿ / ﻿43.683°N 1.617°W﻿ / 43.683; -1.617) by SM U-91 ( Imperial German Navy) with the loss of seven of her crew. |
| Maja | Sweden | World War I: The cargo ship was sunk in the Irish Sea 15 nautical miles (28 km) east of Ardglass, County Down, United Kingdom by SM UB-126 ( Imperial German Navy) with the loss of nine of her crew. |

## 12 October

List of shipwrecks: 12 October 1918 :
| Ship | State | Description |
| USAT Amphion | United States Army | World War I: The troopship was shelled and damaged in the Atlantic Ocean (36°06′N 62°59′W﻿ / ﻿36.100°N 62.983°W﻿ / 36.100; -62.983) by SM U-155 ( Imperial German Navy). with the loss of two of her crew. |
| Laila | Norway | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 6.5 nautical miles (12.0 km) north of the Mull of Galloway, Wigtownshire, United Kingdom by SM UB-126 ( Imperial German Navy) with the loss of seventeen of her crew |
| Ohio | Sweden | World War I: The cargo ship collided with another vessel and sank in the English Channel while in convoy. All 21 people on board were rescued by a Royal Navy destroyer, but one of the crew later died in hospital. |
| Tripoli II | Italy | World War I: The cargo ship was sunk in the Mediterranean Sea 20 nautical miles (37 km) off Cape Passero, Sicily by SM UB-105 ( Imperial German Navy). |

## 13 October

List of shipwrecks: 13 October 1918 :
| Ship | State | Description |
| Aghion Spiridon | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Aghios Georgios | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Bioletta | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Evangelistria | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Evangelistrios | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Glaros | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |
| Hamidieh | Egypt | World War I: the sailing vessel was shelled and sunk in the Mediterranean Sea 50 nautical miles (93 km) north west of Alexandria by an enemy submarine. |
| Iphigenia | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). Her crew survived. |
| Panaghia | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). Her crew survived. |
| Urania | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica by SM UC-23 ( Imperial German Navy). |

## 14 October

List of shipwrecks: 14 October 1918 :
| Ship | State | Description |
| Augusto de Castilho | Portuguese Navy | World War I: The naval trawler was sunk in the Atlantic Ocean 100 nautical miles (190 km) south west of the Azores by SM U-139 ( Imperial German Navy). |
| Bayard | France | World War I: The fishing vessel was sunk in the Bay of Biscay (47°30′N 4°00′W﻿ / ﻿47.500°N 4.000°W﻿ / 47.500; -4.000) by SM U-91 ( Imperial German Navy). |
| Dundalk | United Kingdom | World War I: The passenger ship was torpedoed and sunk in the Irish Sea 5 nautical miles (9.3 km) north north west of The Skerries, Isle of Anglesey by SM U-90 ( Imperial German Navy) with the loss of 21 lives. |
| SMS M22 | Imperial German Navy | World War I: The M1-class minesweeper was sunk by mines in the North Sea. |
| Stifinder | Norway | StifinderWorld War I: The barque was scuttled in the Atlantic Ocean (37°42′N 53°41′W﻿ / ﻿37.700°N 53.683°W﻿ / 37.700; -53.683) by SM U-152 ( Imperial German Navy). Her crew survived. |

## 15 October

List of shipwrecks: 15 October 1918 :
| Ship | State | Description |
| USS America | United States Navy | The cargo liner/troop ship sank at Hoboken, New Jersey. Raised, repaired and returned to service. |
| Bretagne | France | World War I: The sailing vessel was sunk in the Atlantic Ocean by SM U-43 ( Imperial German Navy). Her crew survived. |
| HM CMB-71A | Royal Navy | The Coastal Motor Boat was lost on this date. |
| Evangelistria | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica (38°39′N 25°13′E﻿ / ﻿38.650°N 25.217°E﻿ / 38.650; 25.217) by SM UC-23 ( Imperial German Navy). |
| Georgios | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica (38°42′N 25°21′E﻿ / ﻿38.700°N 25.350°E﻿ / 38.700; 25.350) by SM UC-23 ( Imperial German Navy). |
| HMS J6 | Royal Navy | World War I: The J-class submarine was shelled and sunk in the North Sea off the coast of Northumberland by the Q-ship HMS Cymric ( Royal Navy), which mistook her pennant number J6 for U6 and assumed she was a U-boat. Fifteen of her 45 crew were lost. |
| Maria | Greece | World War I: The sailing vessel was sunk in the Gulf of Salonica (38°42′N 25°21′E﻿ / ﻿38.700°N 25.350°E﻿ / 38.700; 25.350) by SM UC-23 ( Imperial German Navy). Her crew survived. |

## 16 October

List of shipwrecks: 16 October 1918 :
| Ship | State | Description |
| Dumaru | United States | The cargo ship was struck by lightning, caught fire and sank in the Pacific Ocean 22 miles (35 km) west of Guam whilst on her maiden voyage. 19 crewmen killed. Her captain and four crew were rescued. |
| Pentwyn | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 20 nautical miles (37 km) north east by north of the Smalls Lighthouse by SM U-90 ( Imperial German Navy) with the loss of a crew member. |
| SM UB-90 | Imperial German Navy | World War I: The Type UB III submarine was torpedoed and sunk in the Skagerrak (57°55′N 10°27′E﻿ / ﻿57.917°N 10.450°E﻿ / 57.917; 10.450) by HMS L12 ( Royal Navy) with the loss of all 38 crew. |
| War Council | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 85 nautical miles (157 km) west south west of Cape Matapan, Greece (35°44′N 20°16′E﻿ / ﻿35.733°N 20.267°E﻿ / 35.733; 20.267) by SM U-63 ( Imperial German Navy). Her crew survived. |

## 17 October

List of shipwrecks: 17 October 1918 :
| Ship | State | Description |
| Bonvilston | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 9.5 nautical miles (17.6 km) north west by west of Corsewall Point, Wigtownshire by SM UB-92 ( Imperial German Navy). Her crew survived. |
| Lucia | United States | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 1,200 nautical miles (2,200 km) off the coast of the United States (38°50′N 50°50′W﻿ / ﻿38.833°N 50.833°W﻿ / 38.833; -50.833) by SM U-155 ( Imperial German Navy) with the loss of four of her crew. USS Fairfax ( United States Navy) rescued 86 survivors. |

## 18 October

List of shipwrecks: 18 October 1918 :
| Ship | State | Description |
| Hunsdon | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea (54°19′N 5°27′W﻿ / ﻿54.317°N 5.450°W﻿ / 54.317; -5.450) by SM UB-94 ( Imperial German Navy) with the loss of a crew member. |
| RFA Industry | Royal Navy | World War I: The cargo ship was sunk in the Irish Sea by SM UB-92 ( Imperial German Navy) with the loss of 21 of her crew. |
| Linz | Austria-Hungary | World War I: The passenger ship struck a mine and sank off Cape Rodoni, Albania. Around 600 people were killed in the sinking. |
| Njordur | Iceland | World War I: The trawler was sunk in the Atlantic Ocean (57°02′N 10°58′W﻿ / ﻿57.033°N 10.967°W﻿ / 57.033; -10.967) by SM U-122 ( Imperial German Navy). |
| Oceana | United Kingdom | The Admiralty tug was run into and sunk in Scapa Flow, Orkney Islands by Stobo Castle ( United Kingdom). |
| SM U-34 | Imperial German Navy | World War I: The Type U 31 submarine departed on patrol. Subsequently sunk off Gibraltar on or before 9 November with the loss of all 38 crew. |
| Voltaire | French Navy | World War I: The Danton-class battleship was torpedoed and damaged in the Aegean Sea of Milos, Greece by SM UB-48 ( Imperial German Navy). |
| West Oil | United States | The Tanker burned at Genoa, Italy. Later salvaged. |

## 19 October

List of shipwrecks: 19 October 1918 :
| Ship | State | Description |
| Aida | Portugal | World War I: The sailing vessel was sunk in the Atlantic Ocean off Brest, Finistère, France by SM U-43 ( Imperial German Navy). Her crew survived. |
| Almerian | United Kingdom | World War I: The cargo ship struck a mine and sank in the Mediterranean Sea 13 nautical miles (24 km) off Licata, Sicily (37°11′N 13°39′E﻿ / ﻿37.183°N 13.650°E﻿ / 37.183; 13.650). Her crew survived. |
| John B. Astell | United States | The tug sank at the Quartermasters Pier, South Boston, Massachusetts. |
| HMS Plumpton | Royal Navy | World War I: The Racecourse-class minesweeper struck a mine and was damaged in the North Sea off Ostend, West Flanders, Belgium. She was beached but was declared a total loss. |
| USS Simplicity | United States Navy | The motor boat was crushed by Barge No. 78 ( United States) while tied up alongside an Army dock at Fort Wadsworth, New York. |
| SM UB-123 | Imperial German Navy | World War I: The Type UB III submarine struck a mine and sank in the North Sea with the loss of all 36 crew. |

## 20 October

List of shipwrecks: 20 October 1918 :
| Ship | State | Description |
| Emily Millington | United Kingdom | World War I: The schooner was shelled and sunk in the Atlantic Ocean 13 nautical miles (24 km) north north east of the Bishop Rock, Isles of Scilly by SM UB-92 ( Imperial German Navy). Her crew survived. |
| HMS M21 | Royal Navy | World War I: The M15-class monitor struck a mine in the North Sea off Ostend, West Flanders, Belgium. She was taken in tow but sank in the English Channel off Dover, Kent. |
| Yenrut | United States | The freighter foundered in a severe storm in the Atlantic Ocean east of Watlings Island (25°00′N 72°15′W﻿ / ﻿25.000°N 72.250°W﻿ / 25.000; -72.250). Five crewmen were killed. |

## 21 October

List of shipwrecks: 21 October 1918 :
| Ship | State | Description |
| USS Cero | United States Navy | The patrol vessel was destroyed by fire in Narragansett Bay 50 feet (15 m) west of Bishop's Rock and about 500 yards (460 m) west of Coasters Harbor Island. Her crew were rescued. |
| USS Lake Borgne | United States Navy | The cargo ship struck a rock and sank near Mathieu Point, France. |
| HMML 561 | Royal Navy | The motor launch was lost on this date. |
| Moscow | United Kingdom | Russian Revolution: The cargo ship was scuttled at Petrograd to prevent her capture by Bolshevik forces. |
| Saint Barchan | United Kingdom | World War I: The coaster was torpedoed and sunk in the Irish Sea 4 nautical miles (7.4 km) off St John's Point, County Down by SM UB-94 ( Imperial German Navy) with the loss of eight of her crew. |
| SM UB-89 | Imperial German Navy | The Type UB III submarine collided with SMS Frankfurt ( Imperial German Navy) at Kiel, Schleswig-Holstein (54°21′N 10°10′E﻿ / ﻿54.350°N 10.167°E﻿ / 54.350; 10.167) and sank with the loss of seven lives. She was raised on 30 October. |

## 23 October

List of shipwrecks: 23 October 1918 :
| Ship | State | Description |
| Aghios Gerasimos | Greece | World War I: The sailing vessel was sunk in the Mediterranean Sea south of Crete (34°00′N 25°31′E﻿ / ﻿34.000°N 25.517°E﻿ / 34.000; 25.517) by SM UC-74 ( Imperial German Navy). |
| HMS D1 | Royal Navy | The decommissioned D-class submarine was sunk as a target. |
| J. H. Rutter | United States | The sail barge was sunk in a collision with USS Texan ( United States Navy) in the North River. |

## 25 October

List of shipwrecks: 25 October 1918 :
| Ship | State | Description |
| Princess Sophia | Canada | Princess Sophia on the reef on 24 October. She sank the next day. After grounding on Vanderbilt Reef in Lynn Canal near Juneau, Territory of Alaska, in a heavy snowstorm on 24 October, the passenger ship sank with loss of all 343 people on board. |

## 26 October

List of shipwrecks: 26 October 1918 :
| Ship | State | Description |
| Scow No. 2 | United States | The scow sank in Chelsea Creek at Charlestown, Massachusetts. |

## 27 October

List of shipwrecks: 27 October 1918 :
| Ship | State | Description |
| HMT Calceolaria | Royal Navy | World War I: The naval trawler struck a mine and sank in the North Sea off the Elbow Lightship ( United Kingdom) (51°26′N 1°36′E﻿ / ﻿51.433°N 1.600°E﻿ / 51.433; 1.600) with the loss of five of her crew. |
| Chaparra | Cuba | World War I: Carrying a cargo of 2,000 tons of sugar, the 1,510-gross register ton cargo ship struck a mine laid by the submarine SM U-117 ( Imperial German Navy) in 80 feet (24 m) of water in the Atlantic Ocean of the coast of New Jersey, United States, 70 nautical miles (130 km; 81 mi) southeast of the Barnegat Lighthouse and 10 nautical miles (19 km; 12 mi) off Barnegat. She sank in five minutes with the loss of six of her crew. Her 23 survivors reached Barnegat in her boats. |
| HMS George R. Gray | Royal Navy | The tug was lost on this date. |
| Maria Emilia | Portugal | The barque sprang a leak in the Atlantic Ocean (30°20′N 66°12′W﻿ / ﻿30.333°N 66.200°W﻿ / 30.333; -66.200) and was abandoned by her crew. They were rescued by Themistocles ( Greece). |
| HMT Neptunian | Royal Navy | The naval trawler collided with another vessel and sank in the Atlantic Ocean off Rathlin Island, County Donegal. |
| SM U-78 | Imperial German Navy | World War I: The Type UE I submarine was torpedoed and sunk in the Skagerrak (56°02′N 5°08′E﻿ / ﻿56.033°N 5.133°E﻿ / 56.033; 5.133) by HMS G2 ( Royal Navy) with the loss of all 40 crew. |

## 28 October

List of shipwrecks: 28 October 1918 :
| Ship | State | Description |
| Maj | Sweden | The cargo ship ran aground at Haar-om-Jaederen. She was declared a total loss on 2 November. |
| USS Tarantula | United States Navy | The naval yacht/patrol boat collided with the steamer Frisia ( Netherlands) in the Atlantic Ocean 8 nautical miles (15 km; 9.2 mi) off the Fire Island Lightship ( United States Coast Guard) and sank in 115 feet (35 m) of water. |
| SM U-47 | Imperial German Navy | World War I: The Type U 43 submarine was scuttled at Pula, Austria-Hungary (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM U-65 | Imperial German Navy | World War I: The Type U 63 submarine was scuttled at Pula (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM UB-48 | Imperial German Navy | World War I: The Type UB II submarine was scuttled at Pula (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM UB-116 | Imperial German Navy | World War I: The Type UB III submarine struck a mine and was then depth charged and sunk off Scapa Flow, the Orkney Islands, United Kingdom with the loss of all 36 crew. Wreck blown up 1975. |
| SM UC-25 | Imperial German Navy | World War I: The Type UC II submarine was scuttled at Pula (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM UC-53 | Imperial German Navy | World War I: The Type UC II submarine was scuttled at Pula (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM UC-54 | Imperial German Navy | World War I: The Type UC II submarine was scuttled at Trieste, Italy (45°39′N 13°45′E﻿ / ﻿45.650°N 13.750°E﻿ / 45.650; 13.750). |

## 29 October

List of shipwrecks: 29 October 1918 :
| Ship | State | Description |
| SMS A51 | Imperial German Navy | World War I: The A26-class torpedo boat was scuttled at Rijeka, Kingdom of Serbs, Croats, and Slovenes. |
| SMS A82 | Imperial German Navy | World War I: The A56-class torpedo boat was scuttled at Rijeka. |
| HMT Falkirk | Royal Navy | The naval trawler was lost on this date. |
| HMT Thomas Cornwall | Royal Navy | The Mersey-class trawler collided with another vessel and sank in the North Sea off Filey, Yorkshire with the loss of twenty of her crew. |
| HMS Ulysses | Royal Navy | The R-class destroyer collided with Ellerie ( United Kingdom) and sank in the Firth of Clyde. |

## 30 October

List of shipwrecks: 30 October 1918 :
| Ship | State | Description |
| HMCS Galiano | Royal Canadian Navy | World War I: The Canadian patrol vessel was lost in a storm in Barkley Sound, British Columbia. |
| Neptune | United States | While under tow from Seattle, Washington, to Tyee, Territory of Alaska, with a cargo of 27,500 pounds (12,500 kg) of salted herring, salt, and barrels, the 365-ton barge drifted onto rocks, was stranded, and then sank 4 nautical miles (7.4 km; 4.6 mi) north of Gambier Island (57°26′30″N 133°51′00″W﻿ / ﻿57.44167°N 133.85000°W﻿ / 57.44167; -133.85000﻿ (Gambier Island)) in Southeast Alaska after her towline parted in a gale. Her crew of nine survived. |
| SM U-73 | Imperial German Navy | World War I: The Type UE I submarine was scuttled at Kotor, State of Slovenes, Croats and Serbs (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |
| SM UC-34 | Imperial German Navy | World War I: The Type UC II submarine was scuttled at Pula, Austria-Hungary (44°52′N 13°50′E﻿ / ﻿44.867°N 13.833°E﻿ / 44.867; 13.833). |

## 31 October

List of shipwrecks: 31 October 1918 :
| Ship | State | Description |
| A. J. Fuller | United States | The full-rigged sailing ship was rammed and sunk at anchor in Elliott Bay in 41 fathoms (246 ft; 75 m) of water by Mexico Maru ( Japan). Both crewmen on board survived. |
| Fredelia IV | United States | While towing the barge Neptune ( United States) during a gale, the 21-gross register ton seiner was wrecked in Seymour Canal on the coast of Admiralty Island in the Alexander Archipelago in Southeast Alaska 1 nautical mile (1.9 km; 1.2 mi) south of Pleasant Bay (57°38′40″N 133°59′15″W﻿ / ﻿57.64444°N 133.98750°W﻿ / 57.64444; -133.98750﻿ (Pleasant Bay)) after the towline broke and she collided with Neptune. Fredelia IV was a total loss, but the two men on board survived and were rescued by the motorboat Baltic ( United States). |
| SM UB-129 | Imperial German Navy | World War I: The Type UB III submarine was scuttled at Rijeka, State of Slovenes, Croats and Serbs (45°19′N 14°26′E﻿ / ﻿45.317°N 14.433°E﻿ / 45.317; 14.433). |

## Unknown date

List of shipwrecks: Unknown date 1918 :
| Ship | State | Description |
| SMS Brugge | Imperial German Navy | SMS Brugge. Inset - Charles Fryatt. World War I: The depôt ship was scuttled at Zeebrugge, West Flanders, Belgium. |
| HMS G7 | Royal Navy | World War I: The G-class submarine was lost in the North Sea on or after 23 October. She was declared lost on 1 November. |
| SMS Prinz Heinrich | Imperial German Navy | World War I: The incomplete Neuwerk-class Vorpostenboot was scuttled sometime in October. |