# List of shipwrecks in March 1918

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

## 1 March

List of shipwrecks: 1 March 1918 :
| Ship | State | Description |
| SMS A57 | Imperial German Navy | World War I: The A56-class torpedo boat struck a mine and sank in the North Sea with the loss of twelve of her crew. |
| Borga | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 9 nautical miles (17 km) south east by south of Beer Head, Devon (50°32′N 2°56′W﻿ / ﻿50.533°N 2.933°W﻿ / 50.533; -2.933) by SM U-55 ( Imperial German Navy) with the loss of 5 crew. |
| HMS Calgarian | Royal Navy | World War I: The armed merchant cruiser was torpedoed and sunk in the Irish Sea off Rathlin Island, County Antrim (55°25′N 6°15′W﻿ / ﻿55.417°N 6.250°W﻿ / 55.417; -6.250) by SM U-19 ( Imperial German Navy) with the loss of 49 crew. |
| SMS Hermann Siebert | Imperial German Navy | World War I: The Gronland-class Vorpostenboot was sunk by mines north west of Vlieland. |
| Norefos | Norway | World War I: The supply vessel was scuttled in the Atlantic Ocean 60 nautical miles (110 km) off Dakar, French West Africa. |
| Penvearn | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 15 nautical miles (28 km) north of South Stack, Anglesey (53°35′N 4°49′W﻿ / ﻿53.583°N 4.817°W﻿ / 53.583; -4.817) by SM U-105 ( Imperial German Navy) with the loss of 21 crew. |
| S #2 | United States | While under tow with a cargo of 10 drums containing 11,000 pounds (4,990 kg) of distillates, the 54-gross register ton barge experienced icing, her towline broke, and she sank in the Gulf of Alaska between Kodiak and Chignik, Territory of Alaska. |
| Sunrise | United Kingdom | The ketch struck a submerged wreck and sank. |
| HMT Thomas Collard | Royal Navy | World War I: The naval trawler was sunk by the force of the explosions of the torpedoes that sunk HMS Calgarian ( Royal Navy), which was a victim of SM U-19 ( Imperial German Navy). Her crew survived. |

## 2 March

List of shipwrecks: 2 March 1918 :
| Ship | State | Description |
| Bessy | Isle of Man | World War I: The coaster was shelled and sunk in the Irish Sea 12 nautical miles (22 km) north west of Peel by SM U-91 and SM U-105 (both Imperial German Navy). Her crew survived. |
| Carmelite | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 10 nautical miles (19 km) south west of the Calf of Man, Isle of Man (54°00′N 4°52′W﻿ / ﻿54.000°N 4.867°W﻿ / 54.000; -4.867) by SM U-105 ( Imperial German Navy) with the loss of two of her crew. |
| Euxeinos | Greece | World War I: The cargo ship was sunk in the Mediterranean Sea (32°17′N 32°03′E﻿ / ﻿32.283°N 32.050°E﻿ / 32.283; 32.050) by SM UB-53 ( Imperial German Navy). |
| HMS H5 | Royal Navy | World War I: The H-class submarine was rammed and sunk by Rutherglen ( United Kingdom), which mistook her for a U-boat. All 22 crew were killed. |
| Havna | Norway | World War I: The cargo ship was sunk in the Irish Sea 20 nautical miles (37 km) east south east of the Tuskar Rock by SM UB-65 ( Imperial German Navy) with the loss of eleven of her eighteen crew. |
| Kenmare | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 25 nautical miles (46 km) north west of The Skerries, Isle of Anglesey by SM U-104 ( Imperial German Navy) with the loss of 29 crew. |
| Maria | United Kingdom | The schooner foundered with the loss of three of her crew. |
| Otto Schlick | Imperial German Navy | World War I: The Augustenburg-class Vorpostenboot was sunk by mines off Texel. |
| Rockpool | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 12 nautical miles (22 km) north east by north of Eagle Island, County Mayo by SM U-94 ( Imperial German Navy). Her crew survived, but her captain was taken as a prisoner of war. |
| Stina | Sweden | World War I: The cargo ship was torpedoed, shelled and sunk in the Atlantic Ocean 8 nautical miles (15 km) north by east of the Cairns of Coll, Argyllshire, United Kingdom (56°48′N 6°30′W﻿ / ﻿56.800°N 6.500°W﻿ / 56.800; -6.500) by SM U-22 ( Imperial German Navy). Her crew survived. |

## 3 March

List of shipwrecks: 3 March 1918 :
| Ship | State | Description |
| Countess | United Kingdom | The vessel foundered in the English Channel off Deal, Kent. Her crew were rescued by the Deal Lifeboat. |
| Diamond | United Kingdom | The vessel foundered in the English Channel off Deal. Her crew were rescued by the Deal Lifeboat. |
| Eliza and Alice | United Kingdom | The vessel foundered in the English Channel off Deal. Her crew were rescued by the Deal Lifeboat. |
| Navator | United Kingdom | The vessel foundered in the English Channel off Deal. Her crew were rescued by the Deal Lifeboat. |
| Nikolaus Schoke | Imperial German Navy | World War I: The Ditmar Koel-class Vorpostenboot was sunk by mines off Terschelling. |
| Puritan | United States | The steamer drifted ashore on Fishers Island, New York after her anchor chain parted in the harbor at New London, Connecticut. |
| Romeo | United Kingdom | World War I: The refrigerated cargo ship was torpedoed and sunk in the Irish Sea 11 nautical miles (20 km) north west of Peel, Isle of Man (52°22′N 4°52′W﻿ / ﻿52.367°N 4.867°W﻿ / 52.367; -4.867) by SM U-102 ( Imperial German Navy) with the loss of 26 of her 29 crew. The survivors were rescued by Ardgavel ( United Kingdom) and HMS Kilgobnet ( Royal Navy). |

## 4 March

List of shipwrecks: 4 March 1918 :
| Ship | State | Description |
| Antioco Accame | Italy | World War I: The cargo ship was sunk in the Atlantic Ocean west of Gibraltar (35°11′N 7°55′W﻿ / ﻿35.183°N 7.917°W﻿ / 35.183; -7.917) by SM U-155 ( Imperial German Navy). Her crew survived. |
| Castle Eden | United Kingdom | World War I: The collier was torpedoed and sunk in the Atlantic Ocean 4 nautical miles (7.4 km) south south east of the Inishtrahull Lighthouse, County Donegal by SM U-110 ( Imperial German Navy) with the loss of a crew member. |
| Clan Macpherson | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 24 nautical miles (44 km) north of Cape Serrat, Tunisia (37°47′N 9°05′E﻿ / ﻿37.783°N 9.083°E﻿ / 37.783; 9.083) by SM UC-27 ( Imperial German Navy) with the loss of eighteen of her crew. |
| Geneva | United Kingdom | The coaster struck a submerged wreck and was beached. She sank the next day. |
| Lady Londonderry | United Kingdom | The coaster collided with another vessel and sank. |
| Northfield | United Kingdom | World War I: The collier was torpedoed and sunk in the Bristol Channel 25 nautical miles (46 km) south west of Lundy Island, Devon (50°55′15″N 4°45′30″W﻿ / ﻿50.92083°N 4.75833°W﻿ / 50.92083; -4.75833) by SM U-60 ( Imperial German Navy) with the loss of fifteen crew. |
| Polkerris | France | World War I: The cargo ship was sunk in the English Channel 10 nautical miles (19 km) south east of Portland Bill, Dorset, United Kingdom by SM UB-80 ( Imperial German Navy). Her crew survived. |
| Puritan | United States | The 78-gross register ton, 80.6-foot (24.6 m) fishing vessel was wrecked on Montague Island at the entrance to Prince William Sound on the south-central coast of the Territory of Alaska. Her entire crew of 17 survived. |

## 5 March

List of shipwrecks: 5 March 1918 :
| Ship | State | Description |
| Coalgas | United Kingdom | World War I: The cargo ship struck a mine and sank in the North Sea 5 nautical miles (9.3 km) south by west of the Shipwash Lightship ( United Kingdom). Her crew survived. |
| Edouard Marie | Belgium | World War I: The fishing vessel was sunk in the Atlantic Ocean 5 nautical miles (9.3 km) south of the Wolf Rock, Cornwall, United Kingdom (49°52′N 5°52′W﻿ / ﻿49.867°N 5.867°W﻿ / 49.867; -5.867) by SM UC-75 ( Imperial German Navy). |
| Estrella | United Kingdom | World War I: The cargo ship struck a mine and sank in the North Sea 5 nautical miles (9.3 km) south by west of the Shipwash Lightship ( United Kingdom) with the loss of twenty of her crew. |
| Quarnero | Italy | World War I: The cargo ship was sunk in the Atlantic Ocean 5 nautical miles (9.3 km) north of Portreath, Cornwall, United Kingdom (50°21′N 5°19′W﻿ / ﻿50.350°N 5.317°W﻿ / 50.350; -5.317) by SM U-60 ( Imperial German Navy). |
| Roxburgh | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 15 nautical miles (28 km) east by north of Cape St. John, Crete, Greece by SM UC-74 ( Imperial German Navy) with the loss of six of her crew. |
| Tusnastabb | Norway | World War I: The cargo ship struck a mine and sank in the North Sea south west of the Shipwash Lightship ( United Kingdom) (51°57′N 1°43′E﻿ / ﻿51.950°N 1.717°E﻿ / 51.950; 1.717). Her crew survived. |
| Uskmoor | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 3 nautical miles (5.6 km) south west of Prawle Point, Devon by SM UB-80 ( Imperial German Navy). Her crew survived. |
| HMT William Tennant | Royal Navy | The naval trawler collided with a British trawler and sank. |

## 6 March

List of shipwrecks: 6 March 1918 :
| Ship | State | Description |
| Daiten Maru | Japan | World War I: The cargo ship was sunk in the Mediterranean Sea west of Sicily, Italy by SM U-35 ( Imperial German Navy). Her crew survived. |
| Elector | Portugal | World War I: The sailing vessel was sunk in the Atlantic Ocean off Rio de Oro by SM U-152 ( Imperial German Navy). |
| Francis Inness | United States | The schooner went ashore on Block Island, Rhode Island. Refloated by naval vessels. |
| Kalgan | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 33 nautical miles (61 km) south west of Jaffa, Occupied Enemy Territory Administration by SM UB-53 ( Imperial German Navy) with the loss of a crew member. |
| HMT Princess Alice | Royal Navy | The naval trawler was lost in the Mediterranean Sea on this date. |

## 7 March

List of shipwrecks: 7 March 1918 :
| Ship | State | Description |
| Begona No.4 | Spain | World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 60 nautical miles (110 km) north west of Marettimo, Italy by SM U-35 ( Imperial German Navy). |
| Braatt II | Norway | World War I: The cargo ship was torpedoed and sunk in the English Channel 7 nautical miles (13 km) south west by south of St. Catherine's Point, Isle of Wight, United Kingdom (50°29′N 1°21′W﻿ / ﻿50.483°N 1.350°W﻿ / 50.483; -1.350) by SM UB-30 ( Imperial German Navy). Her crew survived. |
| Brise | France | World War I: The sailing vessel was shelled and sunk in the Atlantic Ocean 3.5 nautical miles (6.5 km) north of Trevose Head, Cornwall, United Kingdom (50°36′N 5°03′W﻿ / ﻿50.600°N 5.050°W﻿ / 50.600; -5.050) by SM U-55 ( Imperial German Navy). |
| Luigi | Italy | World War I: The cargo ship was sunk in the Atlantic Ocean off Rio de Oro (25°35′N 14°38′W﻿ / ﻿25.583°N 14.633°W﻿ / 25.583; -14.633) by SM U-152 ( Imperial German Navy). Her crew survived. |
| Martha | Belgium | World War I: The coaster was torpedoed and sunk in the English Channel 5 nautical miles (9.3 km) west by south of Portland Bill, Dorset, United Kingdom (50°30′N 2°36′W﻿ / ﻿50.500°N 2.600°W﻿ / 50.500; -2.600) by SM UB-80 ( Imperial German Navy). |
| Saint Georges | France | World War I: The sailing vessel was shelled and sunk in the Atlantic Ocean 2 nautical miles (3.7 km) north of Trevose Head (50°35′N 5°03′W﻿ / ﻿50.583°N 5.050°W﻿ / 50.583; -5.050) by SM U-55 ( Imperial German Navy). |
| Saint Joseph | France | World War I: The three-masted barquentine was shelled and sunk in the Atlantic Ocean 5 nautical miles (9.3 km) north west of Trevose Head (50°36′N 5°08′W﻿ / ﻿50.600°N 5.133°W﻿ / 50.600; -5.133) by SM U-55 ( Imperial German Navy). |
| Tarbetness | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 12 nautical miles (22 km) south west of the Caernarvon Lightship ( United Kingdom) by SM U-110 ( Imperial German Navy). Her crew survived. |
| Umatilla | United States | The cargo ship was wrecked when she ran aground north of Inuboyesaki, Japan. |
| RFA Vitol | Royal Navy | World War I: The tanker was sunk in the Irish Sea (52°38′N 5°04′W﻿ / ﻿52.633°N 5.067°W﻿ / 52.633; -5.067) by SM U-110 ( Imperial German Navy) with the loss of four crew. |

## 8 March

List of shipwrecks: 8 March 1918 :
| Ship | State | Description |
| Ayr | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 31 nautical miles (57 km) north of Linosa, Italy (36°23′N 13°45′E﻿ / ﻿36.383°N 13.750°E﻿ / 36.383; 13.750) by SM UC-27 ( Imperial German Navy). Her crew survived. |
| City of Parkersburg | United States | The steamer struck a sunken barge and sank in deep water in the Ohio River off Russell, Kentucky/Ironton, Ohio. |
| Corsham | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 6 nautical miles (11 km) east south east of the mouth of the River Tees by SM UC-40 ( Imperial German Navy) with the loss of nine of her crew. |
| Erica | United Kingdom | World War I: The schooner was shelled and sunk in the Irish Sea 5 nautical miles (9.3 km) south west of Bardsey Island, Pembrokeshire by SM U-110 ( Imperial German Navy). Her crew survived. |
| Intent | United Kingdom | World War I: The collier was torpedoed and sunk in the North Sea 4 nautical miles (7.4 km) east by north of Seaham, County Durham by SM UC-40 ( Imperial German Navy) with the loss of a crew member. |
| Madeline | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 14 nautical miles (26 km) east north east of the Pendeen Lighthouse, Cornwall (50°02′N 5°25′W﻿ / ﻿50.033°N 5.417°W﻿ / 50.033; -5.417) by SM U-55 ( Imperial German Navy) with the loss of three crew. |
| Uganda | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 32 nautical miles (59 km) north east by north of Linosa, Italy (36°18′N 13°15′E﻿ / ﻿36.300°N 13.250°E﻿ / 36.300; 13.250﻿ (SS Uganda)) by U-28 ( Austro-Hungarian Navy) with the loss of a crew member. |

## 9 March

List of shipwrecks: 9 March 1918 :
| Ship | State | Description |
| Admiral Evans | United States | The 2,393-gross register ton passenger steamer struck a reef and was beached in a sinking condition in Hawk Inlet (58°05′N 134°46′W﻿ / ﻿58.083°N 134.767°W﻿ / 58.083; -134.767﻿ (Hawk Inlet)) in Southeast Alaska. After her 91 passengers were taken off, she was refloated, repaired, and returned to service. |
| Grane | Norway | World War I: The cargo ship was sunk in the English Channel 4 nautical miles (7.4 km) west-southwest of Portland Bill, Dorset, United Kingdom by SM UB-80 ( Imperial German Navy) with the loss of two of her crew. |
| Hindenburg | Germany | World War I: Finnish Civil War: The icebreaker struck a mine and sank in the Baltic Sea off Åland, Sweden. Three of her crew killed, five wounded. The wreck was found in 1995 at a depth of 50 metres (160 ft) by dive instructor Richard Johansson from Maltaproffsen and his crew from Ålands Dykcenter and FF-Dyk. |
| Jolanda | Italy | World War I: The brigantine was scuttled in the Mediterranean Sea northeast of Sardinia (41°25′N 9°40′E﻿ / ﻿41.417°N 9.667°E﻿ / 41.417; 9.667) by the submarine SM UC-67 ( Imperial German Navy). Her crew survived. |
| Marguerite | United Kingdom | World War I: The fishing smack was scuttled in the Irish Sea off Barrow-in-Furness, Lancashire, England, by the submarine SM UC-75 ( Imperial German Navy). |
| Nanny Wignall | United Kingdom | World War I: The schooner was sunk by gunfire in the Atlantic Ocean 14 nautical miles (26 km) southeast by south of the Tusker Rock, Ireland, by the submarine SM U-110 ( Imperial German Navy). Her crew survived. |
| Pasqualina | Italy | World War I: The schooner was scuttled in the Mediterranean Sea northeast of Sardinia by the submarine SM UC-67 ( Imperial German Navy). |
| Randelsborg | Denmark | World War I: The cargo ship was sunk in the Skagerrak 20 nautical miles (37 km) southeast of Oscö, Denmark, by the submarine SM UB-34 ( Imperial German Navy). Her crew survived. |
| Silverdale | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 28 nautical miles (52 km) east by north of the Cani Rocks, Tunisia, by the submarine SM U-35 ( Imperial German Navy). Her crew survived. |
| Udala Mendi | Spain | The cargo ship collided with a British merchant vessel and sank. Her crew were rescued. |

## 10 March

List of shipwrecks: 10 March 1918 :
| Ship | State | Description |
| Chagres | United Kingdom | World War I: The passenger ship was torpedoed and sunk in the Mediterranean Sea 62 nautical miles (115 km) east north east of Cape Drepano, Crete, Greece by SM UC-74 ( Imperial German Navy) with the loss of one life. |
| HMT Columba | Royal Navy | World War I: The naval trawler struck a mine and sank in the Firth of Forth 2 nautical miles (3.7 km) off the Isle of May, Fife (56°10′N 2°34′W﻿ / ﻿56.167°N 2.567°W﻿ / 56.167; -2.567) with the loss of five of her crew. |
| Cristina | Spain | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 15 nautical miles (28 km) south west of Trevose Head, Cornwall, United Kingdom (50°23′N 5°13′W﻿ / ﻿50.383°N 5.217°W﻿ / 50.383; -5.217) by SM U-55 ( Imperial German Navy). Her crew survived. |
| HMT Endeavour | Royal Navy | World War I: The naval trawler was lost due to enemy action. |
| Germaine | France | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 2 nautical miles (3.7 km) off Pentire Head, Cornwall (50°37′N 4°58′W﻿ / ﻿50.617°N 4.967°W﻿ / 50.617; -4.967) by SM U-110 ( Imperial German Navy). |
| Hampshire | United States | The barge, under tow of Mars ( United States), foundered in a severe gale near Five Fathom Bank light station. All 4 hands died. |
| SMS M91 | Imperial German Navy | World War I: The Type 1916 minesweeper struck a mine and sank in the North Sea. |
| Prince Charles de Belgique | Belgium | The cargo ship collided with Firtree ( United Kingdom) in the English Channel, 3 to 4 nautical miles (5.6 to 7.4 km) east of Bull Point 51°20′N 4°06′W﻿ / ﻿51.333°N 4.100°W﻿ / 51.333; -4.100﻿ (SS Prince Charles de Belgique) and sank. Her ten crew were rescued. |
| Skrymer | Norway | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 2 nautical miles (3.7 km) off Pendeen, Cornwall (50°11′N 5°40′W﻿ / ﻿50.183°N 5.667°W﻿ / 50.183; -5.667) by SM UC-77 ( Imperial German Navy) with the loss of two of her crew. |
| Sunrise | United Kingdom | World War I: The fishing smack was scuttled in the Irish Sea 10 nautical miles (19 km) south east of Maughold Head, Isle of Man by SM UC-75 ( Imperial German Navy). Her crew survived. |
| SM UB-58 | Imperial German Navy | World War I: The Type UB III submarine struck a mine and sank in the English Channel (51°00′N 1°19′E﻿ / ﻿51.000°N 1.317°E﻿ / 51.000; 1.317) with the loss of all 35 crew. |
| Wave | United Kingdom | World War I: The fishing smack was scuttled in the Irish Sea 10 nautical miles (19 km) south west by west of St Bees Head, Cumberland by SM UC-75 ( Imperial German Navy). Her crew survived. |

## 11 March

List of shipwrecks: 11 March 1918 :
| Ship | State | Description |
| HMT Frigate Bird | Royal Navy | The naval trawler was lost on this date. |
| Stolt Nielsen | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 38 nautical miles (70 km) south of Dellimara Point, Malta (35°10′N 14°40′E﻿ / ﻿35.167°N 14.667°E﻿ / 35.167; 14.667) by SM U-28 ( Austro-Hungarian Navy). Her crew survived. |
| Tripoli | Italy | World War I: The barque was scuttled in the Mediterranean Sea off Toulon, Var, France by SM UC-67 ( Imperial German Navy). |
| SM UB-17 | Imperial German Navy | World War I: The Type UB I submarine departed Zeebrugge, West Flanders, Belgium on patrol. No further trace, lost with all eighteen crew. |
| SM UB-54 | Imperial German Navy | World War I: The Type UB III submarine departed for a patrol in the English Channel. Sunk on 11 March 1918 at 53°15′N 0°45′E﻿ / ﻿53.250°N 0.750°E﻿ / 53.250; 0.750 by destroyers HMS Sturgeon, Thruster, and Retriever (all Royal Navy) using depth charges, lost with all 29 crew. |
| W. A. Massey | United Kingdom | World War I: The trawler struck a mine and sank in the Atlantic Ocean 4 nautical miles (7.4 km) west by north of Handa Island, Sutherland with the loss of ten of her crew. |
| William A. Bisso | United States | The ocean going tug was sunk in a collision with Cohauila ( Mexico) in the Mississippi River at Point Celest Bend 50 miles (80 km) below New Orleans, Louisiana. Her captain and eight crew were killed, 8 rescued. |
| William P. Palmer | United States | The steamer stranded on Great Ledge at the entrance to the harbor at New Bedford, Massachusetts. Refloated and returned to service. |

## 12 March

List of shipwrecks: 12 March 1918 :
| Ship | State | Description |
| HMS D3 | Royal Navy | World War I: The D-class submarine was bombed and sunk in the English Channel by the French airship AT-0 with the loss of all 25 crew. |
| Gaupen | United Kingdom | World War I: The cargo ship struck a mine and sank in the English Channel 5 nautical miles (9.3 km) south east by east of North Foreland, Kent. |
| Kershaw | United States | The steamer went ashore near Shinnecock Hills, New York. Refloated and returned to service. |
| No. 3 | Imperial Russian Navy | The No. 1-class submarine was lost on the Danube. |
| Nordkyn | Norway | World War I: The cargo ship was sunk in the Atlantic Ocean (34°12′N 10°17′W﻿ / ﻿34.200°N 10.283°W﻿ / 34.200; -10.283) by SM U-154 ( Imperial German Navy). Her crew survived. |
| Oswin | Sweden | World War I: The cargo ship was sunk in the North Sea 40 nautical miles (74 km) east north east of St Abb's Head, Berwickshire, United Kingdom by SM UB-62 ( Imperial German Navy). Her crew survived. |

## 13 March

List of shipwrecks: 13 March 1918 :
| Ship | State | Description |
| SMS A56 | Imperial German Navy | World War I: The A56-class torpedo boat struck a mine and sank in the North Sea with the loss of sixteen of her crew. |
| Adine | Norway | World War I: The cargo ship was torpedoed and sunk in the North Sea 8 nautical miles (15 km) off the Heugh Battery, Hartlepool, County Durham, United Kingdom (54°42′N 0°58′E﻿ / ﻿54.700°N 0.967°E﻿ / 54.700; 0.967) by SM UB-34 ( Imperial German Navy). Her crew survived. |
| HMT Adrian | Royal Navy | The naval trawler was lost on this date. |
| A. E. Whyland | United States | World War I: The whaler was sunk in the Atlantic Ocean 55 nautical miles (102 km) off Tenerife, Canary Islands, Spain (27°02′N 16°26′W﻿ / ﻿27.033°N 16.433°W﻿ / 27.033; -16.433) by SM U-152 ( Imperial German Navy). Her crew survived. |
| Arno Mendi | Spain | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 14 nautical miles (26 km) south of the Stack Lighthouse by SM UC-75 ( Imperial German Navy). |
| Crayford | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 110 nautical miles (200 km) west by south of Skudesnes, Rogaland, Norway by SM U-46 ( Imperial German Navy) with the loss of a crew member. |
| Lisette | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 8 nautical miles (15 km) north east by north of the Shipwash Lightship ( United Kingdom) by a Kaiserliche Marine submarine with the loss of a crew member. |
| Londonier | Belgium | World War I: The cargo ship was torpedoed and sunk in the English Channel south of the Isle of Wight, United Kingdom (50°31′N 1°19′W﻿ / ﻿50.517°N 1.317°W﻿ / 50.517; -1.317﻿ (SS Londonier)) by SM UC-71 ( Imperial German Navy) |
| HMT Nexus | Royal Navy | The naval trawler was lost on this date. |
| S. Francesco Di Paola D. | Italy | World War I: The sailing vessel was sunk in the Tyrrhenian Sea 70 nautical miles (130 km) south of Naples (39°45′N 12°38′E﻿ / ﻿39.750°N 12.633°E﻿ / 39.750; 12.633) by SM UB-49 ( Imperial German Navy). |
| Tweed | United Kingdom | World War I: The collier was torpedoed and sunk in the English Channel 10 nautical miles (19 km) south by west of St. Catherine's Point, Isle of Wight by SM UB-59 ( Imperial German Navy) with the loss of seven of her crew. |
| Wegadesk | Norway | World War I: The cargo ship was scuttled in the Atlantic Ocean west of Gibraltar by SM U-155 ( Imperial German Navy). Her crew survived. |

## 14 March

List of shipwrecks: 14 March 1918 :
| Ship | State | Description |
| A. A. Raven | United States | World War I: The cargo ship was sunk in the Atlantic Ocean 15 nautical miles (28 km) south of the Wolf Rock, Cornwall, United Kingdom (49°41′N 5°50′W﻿ / ﻿49.683°N 5.833°W﻿ / 49.683; -5.833) by SM UB-55 ( Imperial German Navy) with the loss of seven crew. |
| HMT Agate | Royal Navy | World War I: The naval trawler struck a mine and sank in the English Channel off the Royal Sovereign Lightship ( United Kingdom) with the loss of four of her crew. by SM UC-71 ( Imperial German Navy). Her crew survived. |
| Amulet | United Kingdom | The cargo ship collided with a Norwegian merchant vessel and sank. Her crew were rescued. |
| HMS Ardandearg | Royal Navy | World War I: The collier was torpedoed and sunk in the Mediterranean Sea 86 nautical miles (159 km) east of Malta by SM UC-54 ( Imperial German Navy) with the loss of two of her crew. |
| Arpillao | Spain | World War I: The cargo ship was sunk in the Atlantic Ocean off Las Palmas, Canary Islands (29°08′N 14°53′W﻿ / ﻿29.133°N 14.883°W﻿ / 29.133; -14.883) by SM U-157 ( Imperial German Navy). Her crew survived. |
| Carla | Norway | World War I: The barque was shelled and sunk in the English Channel 56 nautical miles (104 km) north west by north of Le Havre, Seine-Inférieure, France by SM UB-33 ( Imperial German Navy). Her crew survived. |
| Castleford | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 2 nautical miles (3.7 km) east by north of Robin Hood's Bay, Yorkshire by SM UC-40 ( Imperial German Navy). Her crew survived. |
| Jeanne | France | World War I: The schooner was scuttled in the Gulf of Lion (42°32′N 4°10′E﻿ / ﻿42.533°N 4.167°E﻿ / 42.533; 4.167) by SM UC-67 ( Imperial German Navy). |
| Jeanne Marie | France | World War I: The cargo ship struck a mine and sank in the English Channel off Sark, Channel Islands (49°20′N 2°22′W﻿ / ﻿49.333°N 2.367°W﻿ / 49.333; -2.367). |
| Principessa Laetitia | Italy | World War I: The cargo ship was sunk in the Tyrrhenian Sea off Ponza by SM UB-49 ( Imperial German Navy). Her crew survived. |
| Tweed | United Kingdom | World War I: The cargo ship was torpedoed and sunk in St. George's Channel 15 nautical miles (28 km) south south east of the Tuskar Rock, Ireland (52°11′N 5°50′W﻿ / ﻿52.183°N 5.833°W﻿ / 52.183; -5.833) by SM UC-75 ( Imperial German Navy). Her crew survived. |
| Venezuela | France | World War I: The coaster was sunk in the English Channel off the Isle of Wight, United Kingdom by SM UB-59 ( Imperial German Navy) with the loss of all hands. |

## 15 March

List of shipwrecks: 15 March 1918 :
| Ship | State | Description |
| Adriatico | Italy | The cargo ship collided with a British merchant vessel and sank. |
| Alessandra | Italy | World War I: The full-rigged ship was scuttled in the Atlantic Ocean west of Madeira, Portugal (33°21′N 21°00′W﻿ / ﻿33.350°N 21.000°W﻿ / 33.350; -21.000) by SM U-153 ( Imperial German Navy). |
| Amazon | United Kingdom | World War I: The ocean liner was torpedoed and sunk in the Atlantic Ocean off Malin Head, County Donegal (55°49′N 8°06′W﻿ / ﻿55.817°N 8.100°W﻿ / 55.817; -8.100) by SM U-110 ( Imperial German Navy). Her crew survived. |
| Armonia | Canada | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 38 nautical miles (70 km) off Porquerolles, Var, France by SM UC-67 ( Imperial German Navy) with the loss of seven of her crew. |
| Carrie A. Lane | United States | The schooner foundered in the Gulf of Guinea off Assinie, French West Africa. |
| Clan Macdougall | United Kingdom | World War I: The cargo ship was sunk in the Mediterranean Sea 60 nautical miles (110 km) south of Cape Carbonara, Sardinia, Italy by SM UB-49 ( Imperial German Navy) with the loss of 33 crew. |
| Greta | Imperial German Navy | World War I: The Greta-class Vorpostenboot was sunk by mines off Blaavand Point. |
| Severn | United Kingdom | The coaster collided with the Widnes-Runcorn Transporter Bridge and sank in the River Mersey with the loss of all three crew. |
| Sparkling Foam | United Kingdom | World War I: The three-masted sailing vessel was scuttled in the English Channel 9 nautical miles (17 km) south east of Beer Head, Devon by SM UB-33 ( Imperial German Navy). Her crew survived. |
| SM U-110 | Imperial German Navy | World War I: The Type U 93 submarine was depth charged and sunk in the Atlantic Ocean off Malin Head (54°49′N 8°06′W﻿ / ﻿54.817°N 8.100°W﻿ / 54.817; -8.100) by HMS Michael and HMS Moresby (both Royal Navy) with the loss of all 39 crew. |
| SM UB-106 | Imperial German Navy | The Type UB III submarine sank at Kiel, Schleswig-Holstein (54°42′N 10°09′E﻿ / ﻿54.700°N 10.150°E﻿ / 54.700; 10.150) with the loss of all 35 crew. She was raised on 18 March, repaired and returned to service. |

## 16 March

List of shipwrecks: 16 March 1918 :
| Ship | State | Description |
| Ellaston | United Kingdom | World War I: The collier was scuttled in the Atlantic Ocean 180 nautical miles (330 km) off the Canary Islands, Spain by SM U-152 ( Imperial German Navy). Her crew survived, but her captain was taken as a prisoner of war. |
| Lightfoot | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 2 nautical miles (3.7 km) south of the Owers Lightship ( United Kingdom) by SM UB-30 ( Imperial German Navy). Her crew survived. |
| Oilfield | United Kingdom | World War I: The tanker was torpedoed and damaged in the Atlantic Ocean off Cape Wrath, Sutherland (58°45′N 5°26′W﻿ / ﻿58.750°N 5.433°W﻿ / 58.750; -5.433) by SM U-90 ( Imperial German Navy). She was beached at Stornoway, Orkney Islands but was declared a constructive total loss. |
| Quintero | Denmark | World War I: The three-masted barque was scuttled in the North Sea off Skagen (57°54′N 9°33′E﻿ / ﻿57.900°N 9.550°E﻿ / 57.900; 9.550) by SM UB-34 ( Imperial German Navy). Her crew survived. |
| HMT Vulture II | Royal Navy | The naval trawler collided with another vessel and sank off Eriboll, Sutherland. |

## 17 March

List of shipwrecks: 17 March 1918 :
| Ship | State | Description |
| Anne Yvonne | France | World War I: The sailing vessel was shelled and sunk in the English Channel 1.5 nautical miles (2.8 km) off Cadgwith, Cornwall, United Kingdom (49°59′N 5°10′W﻿ / ﻿49.983°N 5.167°W﻿ / 49.983; -5.167) by SM UB-57 ( Imperial German Navy). |
| Arvor | France | World War I: The sailing vessel was sunk in the English Channel 1.5 nautical miles (2.8 km) north east of The Lizard, Cornwall (49°59′N 5°10′W﻿ / ﻿49.983°N 5.167°W﻿ / 49.983; -5.167) by SM UB-57 ( Imperial German Navy). |
| Beata | France | World War I: The sailing vessel was shelled and sunk in the English Channel 1.5 nautical miles (2.8 km) north east of The Lizard (49°59′N 5°10′W﻿ / ﻿49.983°N 5.167°W﻿ / 49.983; -5.167) by SM UB-57 ( Imperial German Navy). |
| Cressida | United Kingdom | World War I: The steam yacht was torpedoed and sunk in the Irish Sea 16 nautical miles (30 km) west by north of The Skerries, Isle of Anglesey (53°23′N 5°05′W﻿ / ﻿53.383°N 5.083°W﻿ / 53.383; -5.083 by SM U-103 ( Imperial German Navy) with the loss of three crew. |
| Dunure | United Kingdom | The barque sprang a leak and foundered in the Mediterranean Sea 12 nautical miles (22 km) south of Isla Cristina, Spain. Her crew were rescued. |
| Eliza Anne | United Kingdom | World War I: The ketch was scuttled in the Atlantic Ocean 33 nautical miles (61 km) south by west of the Eddystone Lighthouse by SM UC-75 ( Imperial German Navy). Her crew survived. |
| Guadalquivir | Spain | World War I: The cargo ship was sunk in the Atlantic Ocean (33°10′N 9°37′W﻿ / ﻿33.167°N 9.617°W﻿ / 33.167; -9.617) by SM U-154 ( Imperial German Navy). Her crew survived. |
| Ivydene | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 36 nautical miles (67 km) north of Cape Bougaroni, Algeria (38°49′N 6°32′E﻿ / ﻿38.817°N 6.533°E﻿ / 38.817; 6.533 by SM UB-52 ( Imperial German Navy) with the loss of a crew member. |
| Sea Gull | United Kingdom | World War I: The coaster was torpedoed and sunk in the Irish Sea 7 nautical miles (13 km) off Point Lynas, Anglesey by SM U-103 ( Imperial German Navy) with the loss of twenty crew. |
| South Western | United Kingdom | World War I: The coaster was torpedoed and sunk in the English Channel 9 nautical miles (17 km) west by south of St. Catherine's Point, Isle of Wight by SM UB-59 ( Imperial German Navy) with the loss of 24 of her crew. |
| Tripoli | Italy | World War I: The passenger ship was sunk in the Mediterranean Sea off Capo Figari, Sardinia (41°07′N 9°57′E﻿ / ﻿41.117°N 9.950°E﻿ / 41.117; 9.950) by SM UB-49 ( Imperial German Navy). |
| Waihemo | United Kingdom | World War I: The cargo ship struck a mine and sank in the Aegean Sea off Piraeus. Her crew survived. |

## 18 March

List of shipwrecks: 18 March 1918 :
| Ship | State | Description |
| Atlantic Sun | United Kingdom | World War I: The tanker was torpedoed and sunk off Orsay, Inner Hebrides (55°49′N 7°10′W﻿ / ﻿55.817°N 7.167°W﻿ / 55.817; -7.167﻿ (SS Atlantic Sun)) by U-46 ( Imperial German Navy) with the loss of two of her crew. |
| Baygitano | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel off Lyme Regis, Dorset (50°41′N 2°56′W﻿ / ﻿50.683°N 2.933°W﻿ / 50.683; -2.933) by SM UC-77 ( Imperial German Navy) with the loss of two of her crew. |
| Heian Maru No.18 | Japan | The cargo ship caught fire and sank at Nagasaki. She was a total loss. |
| John H. Barry | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 104 nautical miles (193 km) north north west of Cape Bougaroni, Algeria (38°42′N 5°45′E﻿ / ﻿38.700°N 5.750°E﻿ / 38.700; 5.750) by SM UB-52 ( Imperial German Navy) with the loss of three crew. |
| Massilia | Italy | World War I: The coal hulk was torpedoed and sunk at Augusta, Sicily by SM UC-25 ( Imperial German Navy). |
| Prometeo | Italy | World War I: The tanker was sunk in the Atlantic Ocean off Cape Carvoeiro, Portugal (37°54′N 16°00′W﻿ / ﻿37.900°N 16.000°W﻿ / 37.900; -16.000) by SM U-155 ( Imperial German Navy). |
| Reidar | Norway | World War I: The cargo ship was sunk in the Atlantic Ocean 340 nautical miles (630 km) off the coast of Portugal by SM U-155 ( Imperial German Navy) with the loss of four of her crew. |
| Saldanha | United Kingdom | World War I: The cargo ship was torpedoed and damaged in the Mediterranean Sea 95 nautical miles (176 km) north of Algiers, Algeria (38°19′N 2°39′E﻿ / ﻿38.317°N 2.650°E﻿ / 38.317; 2.650) by SM UB-52 ( Imperial German Navy). She was torpedoed again the next day and sank with the loss of six crew. |
| Utrecht | French Navy | World War I: The naval tug was shelled and sunk in the Mediterranean Sea 90 nautical miles (170 km) east of Capo Figari, Sardinia, Italy (41°04′N 11°48′E﻿ / ﻿41.067°N 11.800°E﻿ / 41.067; 11.800) by SM UB-49 ( Imperial German Navy) with the loss of two of her crew. |

## 19 March

List of shipwrecks: 19 March 1918 :
| Ship | State | Description |
| Burnstone | United Kingdom | World War I: The collier was torpedoed and sunk in the North Sea 44 nautical miles (81 km) north of the Farne Islands, Northumberland by SM UB-62 ( Imperial German Navy) with the loss of five of her crew. |
| Giovanni Albanesi | Italy | World War I: The barque was shelled and sunk in the Gulf of Naples (40°25′N 13°17′E﻿ / ﻿40.417°N 13.283°E﻿ / 40.417; 13.283) by SM UB-49 ( Imperial German Navy). |
| Linz | Austria-Hungary | World War I: The ocean liner sank in the Adriatic Sea on 19 March 1918 after she hit a mine. |
| San Francesco di Paolo | Italy | World War I: The sailing vessel was scuttled in the Gulf of Naples 70 nautical miles (130 km) west of Naples (40°40′N 13°48′E﻿ / ﻿40.667°N 13.800°E﻿ / 40.667; 13.800) by SM UB-49 ( Imperial German Navy). |
| Luxor | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 27 nautical miles (50 km) west by south of St. Catherine's Point, Isle of Wight by SM UB-57 ( Imperial German Navy). Her crew survived. |

## 20 March

List of shipwrecks: 20 March 1918 :
| Ship | State | Description |
| Antonios M. Theophilatos | Greece | World War I: The cargo ship was sunk in the Mediterranean Sea 75 nautical miles (139 km) north west of Port Said, Egypt (32°04′N 32°08′E﻿ / ﻿32.067°N 32.133°E﻿ / 32.067; 32.133) by SM U-33 ( Imperial German Navy). |
| Azemmour | France | World War I: The coaster was torpedoed and sunk in the English Channel south of the Isle of Wight, United Kingdom (50°32′N 1°36′W﻿ / ﻿50.533°N 1.600°W﻿ / 50.533; -1.600) by SM UB-59 ( Imperial German Navy). |
| Eros | Sweden | World War I: The coaster was torpedoed and sunk in the Atlantic Ocean 8 nautical miles (15 km) west of The Lizard, Cornwall, United Kingdom (49°56′N 5°25′W﻿ / ﻿49.933°N 5.417°W﻿ / 49.933; -5.417) by SM UB-103 ( Imperial German Navy) with the loss of three of her crew. |
| Glenford | United Kingdom | World War I: The coaster was shelled and sunk in the Irish Sea 24 nautical miles (44 km) east of Rockabill, County Dublin (53°40′N 5°20′W﻿ / ﻿53.667°N 5.333°W﻿ / 53.667; -5.333) by SM U-101 ( Imperial German Navy). Her crew survived. |
| Kassanga | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 23 nautical miles (43 km) south east by south of the South Arklow Lightship ( United Kingdom) (52°27′N 5°26′W﻿ / ﻿52.450°N 5.433°W﻿ / 52.450; -5.433) by SM U-103 ( Imperial German Navy). Her crew survived. |
| Matteo Renato Imbriani | Italy | World War I: The cargo ship struck a mine and sank in the Mediterranean Sea 6 nautical miles (11 km) south west of the Île du Planier, Bouches-du-Rhône, France by SM UC-67 ( Imperial German Navy). |
| Saint Dimitrios | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 50 nautical miles (93 km) north by east of Port Said by SM U-33 ( Imperial German Navy). Her crew survived. |
| Samoset | United Kingdom | World War I: The tanker was torpedoed and sunk in the Mediterranean Sea 50 nautical miles (93 km) east north east of Port Said by SM U-33 ( Imperial German Navy) with the loss of three crew. |
| Yochow | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 54 nautical miles (100 km) north by east of Port Said by SM U-33 ( Imperial German Navy) with the loss of 50 crew. |

## 21 March

List of shipwrecks: 21 March 1918 :
| Ship | State | Description |
| SMS A7 | Imperial German Navy | World War I: The A1-class torpedo boat was shelled and sunk in the North Sea off Zeebrugge, West Flanders, Belgium by HMS Morris ( Royal Navy) and/or Bouclier and Capitaine Mehl (both French Navy) with the loss of 23 of her crew. |
| SMS A10 | Imperial German Navy | World War I: The destroyer was rammed and sunk in the North Sea off Zeebrugge by HMS Botha ( Royal Navy). |
| Begonia | United Kingdom | World War I: The collier was torpedoed and sunk in the Atlantic Ocean 44 nautical miles (81 km) north of Wolf Rock, Cornwall (49°13′N 5°40′W﻿ / ﻿49.217°N 5.667°W﻿ / 49.217; -5.667) by SM UB-55 ( Imperial German Navy). Her crew survived. |
| Dante C | Italy | World War I: The vessel was sunk in the Gulf of Naples by SM UB-49 ( Imperial German Navy). |
| Ikeda | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 7 nautical miles (13 km) west of the Brighton Lightship ( United Kingdom) by SM UB-40 ( Imperial German Navy). Her crew survived. |
| Termini | Italy | World War I: The cargo ship was torpedoed and sunk in the Aegean Sea off Milos, Greece (36°49′N 24°21′E﻿ / ﻿36.817°N 24.350°E﻿ / 36.817; 24.350) by SM UC-37 ( Imperial German Navy). |
| Tyrhaug | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 10 nautical miles (19 km) north east of the Pendeen Lighthouse, Cornwall (50°19′N 5°36′W﻿ / ﻿50.317°N 5.600°W﻿ / 50.317; -5.600) by SM UB-103 ( Imperial German Navy) with the loss of two of her crew. |
| William C. Moore | United States | The barge was damaged in a collision with USS Salem ( United States Navy). She later sank at the wharf of Chappell Lumber Company, New London, Connecticut. |

## 22 March

List of shipwrecks: 22 March 1918 :
| Ship | State | Description |
| USS A-1 | United States Navy | The Plunger-class submarine sank at New Suffolk, Massachusetts. Raised and sent to the Salvage Diving School at New London, Connecticut. |
| HMS Gaillardia | Royal Navy | World War I: The Aubrietia-class sloop struck a mine and sank in the North Sea. |
| HMT J. C. P. | Royal Navy | The naval trawler was lost on this date. |
| Polleon | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 3 nautical miles (5.6 km) east north east of the mouth of the River Tyne by SM UB-78 ( Imperial German Navy) with the loss of four of her crew. |
| Saint Jean II | France | World War I: The cargo ship was sunk in the Mediterranean Sea 61 nautical miles (113 km) north west of Cape Bon, Algeria (37°56′N 10°49′E﻿ / ﻿37.933°N 10.817°E﻿ / 37.933; 10.817) by SM UB-50 ( Imperial German Navy). Her crew survived. |
| S. Giuseppe C. | Italy | World War I: The sailing vessel was sunk in the Mediterranean Sea south of Sardinia by SM UC-67 ( Imperial German Navy). |
| Trinidad | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 12 nautical miles (22 km) east of the Codling Bank Lightship ( United Kingdom) by SM U-101 ( Imperial German Navy) with the loss of 39 crew. |

## 23 March

List of shipwrecks: 23 March 1918 :
| Ship | State | Description |
| HMS Arno | Royal Navy | The destroyer collided with HMS Hope ( Royal Navy) in the Dardanelles (40°14′30″N 26°30′30″E﻿ / ﻿40.24167°N 26.50833°E﻿ / 40.24167; 26.50833) and sank. |
| Aulton | United Kingdom | World War I: The coaster was torpedoed and sunk in the North Sea 9 nautical miles (17 km) south east by east of Berwick-upon-Tweed, Northumberland by SM UB-83 ( Imperial German Navy) with the loss of two of her crew. |
| Chattahoochee | United States | World War I: The cargo ship was torpedoed and sunk in the English Channel 28 nautical miles (52 km) south of Penzance, Cornwall, United Kingdom (49°39′N 5°23′W﻿ / ﻿49.650°N 5.383°W﻿ / 49.650; -5.383) by SM UB-55 ( Imperial German Navy). Her crew survived. |
| Etonian | United Kingdom | World War I: The passenger ship was torpedoed and sunk in the Atlantic Ocean 34 nautical miles (63 km) south by east of the Old Head of Kinsale, County Cork by SM U-61 ( Imperial German Navy) with the loss of seven crew. |
| Jane Grey | United Kingdom | World War I: The schooner was shelled and sunk in the Irish Sea 14 nautical miles (26 km) north west by west of the Smalls Lighthouse by SM U-101 ( Imperial German Navy). Her crew survived. |
| SMS M36 | Imperial German Navy | World War I: The Type 1915 minesweeper struck a mine and sank in the North Sea. |
| Madame Midas | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 38 nautical miles (70 km) west south west of The Lizard, Cornwall (49°27′N 5°28′W﻿ / ﻿49.450°N 5.467°W﻿ / 49.450; -5.467) by SM UB-55 ( Imperial German Navy). Her crew survived. |
| Mar Baltico | Spain | World War I: The cargo ship was sunk in the English Channel (49°17′N 5°05′W﻿ / ﻿49.283°N 5.083°W﻿ / 49.283; -5.083) by SM UB-55 ( Imperial German Navy). |
| HMT New Dawn | Royal Navy | World War I: The naval trawler struck a mine and sank in the English Channel off The Needles, Isle of Wight with the loss of three of her crew. |
| Venborg | Norway | World War I: The cargo ship was sunk in the Atlantic Ocean 25 nautical miles (46 km) north of Ouessant, Finistère, France (48°55′N 5°02′W﻿ / ﻿48.917°N 5.033°W﻿ / 48.917; -5.033) by SM UB-55 ( Imperial German Navy). Her crew survived. |

## 24 March

List of shipwrecks: 24 March 1918 :
| Ship | State | Description |
| Anteros | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 16 nautical miles (30 km) west by north of South Stack (53°17′N 5°09′W﻿ / ﻿53.283°N 5.150°W﻿ / 53.283; -5.150) by SM UB-103 ( Imperial German Navy) with the loss of two of her crew. |
| Avala | Italy | World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 320 nautical miles (590 km) west of Madeira, Portugal (38°32′N 17°58′W﻿ / ﻿38.533°N 17.967°W﻿ / 38.533; -17.967) by SM U-155 ( Imperial German Navy). |
| Fileur | France | World War I: The sailing vessel was sunk in the Atlantic Ocean 40 nautical miles (74 km) north west of the Île de Batz, Finistère by SM UB-55 ( Imperial German Navy). |
| John G. Walter | United Kingdom | World War I: The schooner was shelled and sunk in the Irish Sea 20 nautical miles (37 km) south west of the Smalls Lighthouse by SM U-101 ( Imperial German Navy). Her crew survived. |
| Jorgina | United Kingdom | World War I: The schooner was shelled and sunk in the Atlantic Ocean 360 nautical miles (670 km) north by west of Madeira (38°40′N 18°14′W﻿ / ﻿38.667°N 18.233°W﻿ / 38.667; -18.233) by SM U-155 ( Imperial German Navy). Her crew survived. |
| La Nuova Felice | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-53 ( Imperial German Navy). |
| Nuovo Genio | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-53 ( Imperial German Navy). |
| O. B. Jennings | United States | The tanker collided with War Knight ( United Kingdom) in the English Channel off the Needles Lighthouse, Isle of Wight. She was towed into Sandown Bay where she continued to burn for ten days. The tanker was then torpedoed and sunk by friendly fire. O. B. Jennings was raised, repaired and returned to service. The collision created a massive inferno killed everyone on board. |
| Partenope | Regia Marina | World War I: The Partenope-class minelayer was sunk in the Mediterranean Sea off Bizerta, Algeria (37°53′N 10°10′E﻿ / ﻿37.883°N 10.167°E﻿ / 37.883; 10.167) by SM UC-67 ( Imperial German Navy). Her crew survived. |
| Regina Immacolata | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-53 ( Imperial German Navy). |
| Tre Sorrelle Salvo | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-53 ( Imperial German Navy). |
| War Knight | United Kingdom | World War I: The cargo ship collided with O. B. Jennings ( United States) in the English Channel off the Needles Lighthouse, Isle of Wight. War Knight then struck a mine and was beached at Freshwater, Isle of Wight, a total loss. The collision created a massive inferno killed all 32 on board. |

## 25 March

List of shipwrecks: 25 March 1918 :
| Ship | State | Description |
| HMT Border Lads | Royal Navy | World War I: The naval trawler was torpedoed and sunk in the North Sea 2 nautical miles (3.7 km) off the mouth of the River Tyne by SM UB-78 ( Imperial German Navy) with the loss of four of her crew. |
| Carlo Splendor | Italy | World War I: The sailing vessel was sunk in the Strait of Messina by SM UB-49 ( Imperial German Navy). |
| Destro | United Kingdom | World War I: The coaster was torpedoed and sunk in the Irish Sea 5 nautical miles (9.3 km) south west of the Mull of Galloway, Wigtownshire (54°34′N 4°45′W﻿ / ﻿54.567°N 4.750°W﻿ / 54.567; -4.750) by SM U-96 ( Imperial German Navy) with the loss of six of her crew. |
| Francesco Antonio Aiello | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-67 ( Imperial German Navy). |
| Hercules | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the North Sea 4 nautical miles (7.4 km) north north west of Flamborough Head, Yorkshire by SM UB-21 ( Imperial German Navy) with the loss of a crew member. |
| L'Iniziatore | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily (37°30′N 11°45′W﻿ / ﻿37.500°N 11.750°W﻿ / 37.500; -11.750) by SM UC-67 ( Imperial German Navy). |
| Rio Ave | Portugal | World War I: The schooner was shelled and sunk in the Atlantic Ocean 100 nautical miles (190 km) off Madeira (38°33′N 18°08′W﻿ / ﻿38.550°N 18.133°W﻿ / 38.550; -18.133) by SM U-155 ( Imperial German Navy). |
| Tokitsukaze | Imperial Japanese Navy | The destroyer ran aground in heavy rain and broke in half near Aoshima Island in Miyazaki Prefecture, Kyūshū, Japan. Her machinery and weapons were salvaged and she later returned to service with a new hull. |

## 26 March

List of shipwrecks: 26 March 1918 :
| Ship | State | Description |
| USS Admiral | United States Navy | The Naval Yacht struck a rock and sank off Plymouth, Massachusetts. Raised, repaired and returned to service. |
| Elisabetha | Italy | World War I: The sailing vessel was sunk in the Strait of Sicily by SM UC-67 ( Imperial German Navy). |
| RFA Lady Cory-Wright | Royal Navy | World War I: The mine carrier was torpedoed and sunk in the English Channel 14 nautical miles (26 km) off The Lizard, Cornwall by SM UC-17 ( Imperial German Navy) with the loss of 39 of her 40 crew. |
| SM U-61 | Imperial German Navy | World War I: The Type U 57 submarine was sunk in the Atlantic Ocean by USS PC-51 ( United States Navy) with the loss of all 36 crew. |
| Volturno | Italy | World War I: The bulk carrier was sunk in the Mediterranean Sea off Bône, Algeria (37°27′N 8°07′E﻿ / ﻿37.450°N 8.117°E﻿ / 37.450; 8.117) by SM UB-50 ( Imperial German Navy). |

## 27 March

List of shipwrecks: 27 March 1918 :
| Ship | State | Description |
| Allendale | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 52 nautical miles (96 km) south by west of The Lizard, Cornwall (49°50′N 5°50′W﻿ / ﻿49.833°N 5.833°W﻿ / 49.833; -5.833) by SM U-101 ( Imperial German Navy with the loss of a crew member. |
| Beira | Portugal | World War I: The sailing vessel was sunk in the Atlantic Ocean (34°10′N 14°35′W﻿ / ﻿34.167°N 14.583°W﻿ / 34.167; -14.583) by SM U-154 ( Imperial German Navy). Her crew survived. |
| Carlo P. | Italy | World War I: The sailing vessel was sunk in the Mediterranean Sea 30 nautical miles (56 km) north of the Galite Islands, Tunisia by SM UC-54 ( Imperial German Navy). |
| Castrenzo Coppola | Italy | World War I: The sailing vessel was sunk in the Tyrrhenian Sea off Naples by SM UC-53 ( Imperial German Navy). |
| HMS Kale | Royal Navy | World War I: The E-class destroyer struck a naval mine and sank in the North Sea. |
| MB 3, MB 8 and MB 9 | Ottoman Navy | The MB 1-class motor gunboats were lost on this date. |
| Watauga | United Kingdom | World War I: The schooner was shelled and sunk in the Atlantic Ocean 450 nautical miles (830 km) west by north of Lisbon, Portugal (38°54′N 18°24′W﻿ / ﻿38.900°N 18.400°W﻿ / 38.900; -18.400) by SM U-155 ( Imperial German Navy) with the loss of five crew. |

## 28 March

List of shipwrecks: 28 March 1918 :
| Ship | State | Description |
| SMS Amrumbank | Imperial German Navy | World War I: The Gronland-class Vorpostenboot was sunk by mines off Cape Tachkuna, Estonia. |
| Botha | United Kingdom | World War I: The trawler was scuttled in the North Sea 3 nautical miles (5.6 km) east of Whitby, Yorkshire by SM UC-64 ( Imperial German Navy). |
| Brotherly Love | United Kingdom | World War I: The trawler was shelled and sunk in the North Sea 6 nautical miles (11 km) east north east of Whitby by SM UC-64 ( Imperial German Navy). |
| City of Winchester | United Kingdom | World War I: The ketch was shelled and sunk in the English Channel 10 nautical miles (19 km) north west by west of the Les Hanois Lighthouse, Guernsey, Channel Islands (49°28′N 2°55′W﻿ / ﻿49.467°N 2.917°W﻿ / 49.467; -2.917) by SM U-90 ( Imperial German Navy). Her crew survived. |
| Grampus | United Kingdom | The dredger foundered on this date. |
| Honora | United Kingdom | World War I: The fishing vessel was shelled and sunk in the North Sea 6 nautical miles (11 km) east north east of Whitby by SM UC-64 ( Imperial German Navy). |
| Inkosi | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the Irish Sea 10 nautical miles (19 km) south west of Burrow Head, Wigtownshire by SM U-96 ( Imperial German Navy) with the loss of three crew. |
| Noel | United Kingdom | World War I: The fishing vessel was shelled and sunk in the North Sea 6 nautical miles (11 km) east north east of Whitby by SM UC-64 ( Imperial German Navy). |
| SMS Polarstern | Imperial German Navy | The Vorpostenboot was lost on this date. |
| SMS Scharbeutz | Imperial German Navy | World War I: The Anneliese-class Vorpostenboot was sunk as a blockship. |
| HMS Tithonus | Royal Navy | World War I: The armed boarding steamer was sunk in the North Sea 50 nautical miles (93 km) east of Aberdeen (57°04′N 0°33′W﻿ / ﻿57.067°N 0.550°W﻿ / 57.067; -0.550) by SM UB-72 ( Imperial German Navy) with the loss of four of her crew. |

## 29 March

List of shipwrecks: 29 March 1918 :
| Ship | State | Description |
| SMS F32 | Imperial German Navy | The F Type minesweeping boat was lost on this date. |
| Porto Santo | Portugal | The cargo ship foundered in the Aegean Sea off Antimilos, Greece, possibly after striking a mine. Her crew survived. |
| HMT Swallow | Royal Navy | The naval trawler was lost on this date. |
| T. R. Thompson | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 7 nautical miles (13 km) south of Newhaven, Sussex by SM UB-57 ( Imperial German Navy) with the loss of 33 of her crew. |

## 30 March

List of shipwrecks: 30 March 1918 :
| Ship | State | Description |
| SMS G87 | Imperial German Navy | World War I: The G85-class torpedo boat struck a mine and sank in the North Sea with the loss of 43 of her crew. |
| SMS G93 | Imperial German Navy | World War I: The G85-class torpedo boat struck a mine and sank in the North Sea with the loss of ten of her crew. |
| SMS G94 | Imperial German Navy | World War I: The G85-class torpedo boat struck a mine and sank in the North Sea. |
| Geraldine | United Kingdom | World War I: The fishing smack was shelled and sunk in the Irish Sea 10 nautical miles (19 km) east of Lambay Island, County Dublin by SM U-96 ( Imperial German Navy) with the loss of all five of her crew. |
| Lough Fisher | United Kingdom | World War I: The coaster was sunk in the Atlantic Ocean 12 nautical miles (22 km) south south east of Helvick Head, County Waterford by SM U-101 ( Imperial German Navy) with the loss of thirteen crew. |
| Salaminia | Greece | World War I: The cargo ship was shelled and sunk in the Irish Sea 13 nautical miles (24 km) south south east of Rockabill (53°27′N 5°32′W﻿ / ﻿53.450°N 5.533°W﻿ / 53.450; -5.533) by SM UB-64 ( Imperial German Navy). There were a number of casualties. |
| Stabil | Norway | World War I: The coaster was torpedoed and sunk in the Atlantic Ocean off the Pendeen Lighthouse, Cornwall, United Kingdom (50°19′N 5°36′W﻿ / ﻿50.317°N 5.600°W﻿ / 50.317; -5.600) by SM U-46 ( Imperial German Navy) with the loss of nine crew. |
| St. Michan | United Kingdom | World War I: The fishing vessel was shelled and sunk in the Irish Sea 10 nautical miles (19 km) east of Lambay Island by SM U-96 ( Imperial German Navy). Her crew survived. |
| Vafos | Norway | World War I: The cargo ship was sunk in the North Sea 35 nautical miles (65 km) south west by west of the Marstenen Lighthouse by SM UB-72 ( Imperial German Navy) with the loss of four of her crew. |

## 31 March

List of shipwrecks: 31 March 1918 :
| Ship | State | Description |
| Celtic | United Kingdom | World War I: The ocean liner was torpedoed and damaged in the Irish Sea 11 nautical miles (20 km) south of the Isle of Man by SM UB-77 ( Imperial German Navy) with the loss of six lives. She was beached but was later refloated, repaired and returned to service. |
| Conargo | United Kingdom | World War I: The cargo ship was torpedoed and damaged in the Irish Sea 12 nautical miles (22 km)) west by north of the Calf of Man, Isle of Man (54°02′N 5°11′W﻿ / ﻿54.033°N 5.183°W﻿ / 54.033; -5.183) by SM U-96 ( Imperial German Navy). She was torpedoed again the next day and sunk with the loss of nine of her crew (53°33′N 4°50′W﻿ / ﻿53.550°N 4.833°W﻿ / 53.550; -4.833). |
| Excellence Pleske | United Kingdom | World War I: The cargo ship was torpedoed and sunk in the English Channel 2.5 nautical miles (4.6 km) south south east of Dungeness, Kent by SM UB-57 ( Imperial German Navy) with the loss of thirteen of her crew. |
| Immacolata | Italy | World War I: The sailing vessel was sunk in the Tyrrhenian Sea off Bari Sardo, Sardinia by SM UC-35 ( Imperial German Navy). |
| Indien | Denmark | World War I: The cargo ship was sunk in the Atlantic Ocean (40°40′N 28°15′W﻿ / ﻿40.667°N 28.250°W﻿ / 40.667; -28.250) by SM U-152 ( Imperial German Navy) with the loss of 29 crew. |
| La Loire | France | World War I: The cargo ship was sunk in the Mediterranean Sea north east of Alexandria, Egypt by SM U-33 ( Imperial German Navy). |
| San Nicola | United Kingdom | World War I: The sailing vessel was shelled and sunk in the Mediterranean Sea 18 nautical miles (33 km) east north east of Valletta, Malta by SM UC-52 ( Imperial German Navy). |
| Slieve Bloom | United Kingdom | The ferry collided with the destroyer USS Stockton ( United States Navy) and sank with the loss of one life. |
| Vianna | United Kingdom | World War I: The coaster was torpedoed and sunk in the North Sea 4 nautical miles (7.4 km) east of Seaham Harbour, County Durham (54°50′N 1°12′W﻿ / ﻿54.833°N 1.200°W﻿ / 54.833; -1.200) by SM UC-64 ( Imperial German Navy) with the loss of four of her crew. |

## Unknown date

List of shipwrecks: Unknown date 1918 :
| Ship | State | Description |
| Alose | French Navy | The submarine was sunk as a target in the Mediterranean Sea off Fréjus, France. |
| Angelo Raffaele | Italy | World War I: The vessel was sunk in the Gulf of Naples between 19 and 21 March by SM UB-49 ( Imperial German Navy). |
| Avé Maria | France | The schooner sprang a leak and foundered in early March. Her crew were rescued. |
| Cecil L. Shave | United Kingdom | World War I: The sailing vessel was sunk in the Atlantic Ocean off the Azores, Portugal by a Kaiserliche Marine submarine. |
| USS Cyclops | United States Navy | The Proteus-class collier foundered in the Bermuda Triangle some time after 4 March with the loss of all 306 passengers and crew. |
| Lottie A. Silver | United Kingdom | The schooner foundered in the Atlantic Ocean in early March. |