List of shipwrecks in August 1915

The list of shipwrecks in August 1915 includes some ships sunk, foundered, grounded, or otherwise lost during August 1915.

1 August

 * Alert ( undefined): World War I: The fishing smack was set afire and sunk in the North Sea 4 nmi south east of the Newarp Lightship ( undefined) by SMU UB-10 . Her crew survived.
 * SS Benvorlich (1896) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Bay of Biscay 50 nmi west of Ouessant, Finistère, France by SMU U-28 (Germany) . Her crew survived.
 * SS Clintonia (1907) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Bay of Biscay 30 nmi south west by west of Ouessant by SMU U-28 (Germany) with the loss of ten crew.
 * SS Fulgens (1912) ( undefined): World War I: The cargo ship was torpedoed and sunk in the North Sea 1 nmi off Sea Palling, Norfolk by SMU UB-10 . Her crew survived.
 * SS Koophandel (1911) (🇧🇪 Belgium): World War I: The cargo ship was torpedoed, shelled and sunk in the Atlantic Ocean (48.68333°N, -8.41667°W) by SM U-28.
 * Lark ( undefined): World War I: The fishing vessel was sunk in the North Sea off Lowestoft, Suffolk by a Kaiserliche Marine submarine.
 * SS Ranza (1902) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Bay of Biscay 50 nmi south west of Ouessant by SMU U-28 (Germany) with the loss of three of her crew.

2 August

 * SS Bencore Head ( undefined): The cargo ship collided with SS Batiscan ( undefined) off Cape Salmon, Quebec, Canada and was consequently beached.
 * HMS Portia (1906) : World War I: The fleet messenger was shelled and sunk in the Atlantic Ocean 70 nmi south of the Isles of Scilly by SMU U-28 (Germany) . Her crew survived.

3 August

 * SS Costello (1903) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 95 nmi south of the Bishop Rock, Isles of Scilly (49.03333°N, -8.5°W) by SMU U-28 (Germany) with the loss of a crew member.

4 August

 * HMS C33 : World War I: The C-class submarine struck a mine in the North Sea off Great Yarmouth, Norfolk and sank with the loss of all sixteen crew.
 * Challenger ( undefined): World War I: The fishing smack was scuttled in the North Sea 23 nmi east by north of Lowestoft, Suffolk by SMU UB-12 . Her crew survived.
 * Grimbarian ( undefined): World War I: The trawler struck a mine and sank in the North Sea 56 nmi east by north of Spurn Point, Yorkshire with the loss of six of her crew.
 * Heliotrope ( undefined): World War I: The fishing smack was scuttled in the North Sea 23 nmi off Lowestoft by SMU UB-12 . Her crew survived.
 * SS Midland Queen (1901) (🇨🇦 Canada): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 70 nmi south west by west of the Fastnet Rock by SMU U-28 (Germany) . Her crew survived.

5 August

 * HMY Clementina : The armed yacht collided with another vessel in the English Channel off Torpoint, Cornwall and was beached. She was a total loss.
 *  Hans Emil (🇩🇰 Denmark): World War I: The schooner was sunk in the North Sea (57.11667°N, 4.13333°W) by SMU U-38 . Her crew survived.
 * ITALIAN SUBMARINE Nereide : World War I: The was torpedoed and sunk in the Adriatic Sea (42.38333°N, 16.26667°W) by SMU U-5 (Austria-Hungary)  with the loss of all nineteen crew.
 * Vanadis (🇩🇰 Denmark): The sailing vessel was sunk in the North Sea 56.81667°N, 5.03333°W by SMU U-38 . Her crew survived.

6 August

 * C.E.S. ( undefined): World War I: The fishing smack was scuttled in the North Sea 42 nmi east north east of Lowestoft, Suffolk by SMU UB-17 . Her crew survived.
 * Fisherman ( undefined): World War I: The fishing smack was scuttled in the North Sea 37 nmi east north east of Lowestoft by SMU UB-17 . Her crew survived.
 * Hesperus ( undefined): World War I: The fishing smack was scuttled in the North Sea 37 nmi east north east of Lowestoft by SMU UB-17 . Her crew survived.
 * Ivan ( undefined): World War I: The fishing smack was scuttled in the North Sea 42 nmi east north east of Lowestoft by SMU UB-17 . Her crew survived.
 * HMT Leandros : World War I: The naval trawler struck a mine and sank in the North Sea with the loss of seven of her crew.
 * SS Maj (1882) (🇸🇪 Sweden): World War I: The coaster was sunk in the North Sea (56.96667°N, 6.8°W) by SMU U-25 . Her crew survived.
 * Ocean Queen ( undefined): The trawler was scuttled in the North Sea 25 nmi north west of Muckle Flugga, Shetland Islands by SMU U-38 . Her crew survived.
 * Westminster ( undefined): World War I: The trawler was shelled and sunk in the North Sea (60.63333°N, 0.2°W) by SMU U-38 . Her crew were rescued by the drifter Maria Josepha (🇳🇱 Netherlands).
 * Xmas Rose ( undefined): World War I: The fishing smack was scuttled in the North Sea off Lowestoft, Suffolk by SMU UB-10 . Her crew survived.

7 August

 * SS Geiranger (1907) (🇳🇴 Norway): World War I: The cargo ship was sunk in the North Sea 70 nmi east south east of Sumburgh Head, Shetland Islands, United Kingdom (59.55°N, 1.65°W) by SMU U-24 . Her crew survived.
 *  Norman (🇳🇴 Norway): World War I: The barque was sunk in the North Sea 18 nmi off Arendal, Aust-Agder (58.25°N, 9.4°W) by SMU U-25 . Her crew survived.

8 August

 * Arbor Vitae ( undefined): World War I: The fishing smack was scuttled in the North Sea 35 nmi north east by north of Lowestoft, Suffolk by SMU UB-10 . Her crew survived.
 * OTTOMAN BATTLESHIP Barbaros Hayreddin : World War I: The was torpedoed and sunk in the Sea of Marmara off Bolayır, Turkey by HMS E11  with the loss of 253 of her 568 crew.
 * SS Benarthur ( undefined): World War I: The cargo ship struck a mine and was damaged. She was beached but was a total loss.
 * OTTOMAN GUNBOAT Berk-i-Satvet : World War I: The gunboat was torpedoed and sunk in the Dardanelles by a Royal Navy submarine.
 * HMT Ben Ardna : World War I: The naval trawler struck a mine and sank in the English Channel with the loss of two of her crew.
 * SS Glenravel (1906) ( undefined): World War I: The cargo ship was scuttled in the North Sea 25 nmi north of Kinnaird Head, Aberdeenshire (58.11667°N, -2.01667°W) by SMU U-17 (Germany) . Her crew survived.
 * HMS India : World War I: The armed merchant cruiser was torpedoed and sunk in the Norwegian Sea off Bodø, Nordland, Norway by SMU U-22 (Germany) with the loss of 160 of the 311 people on board.
 * SS Malmland (1904) (🇸🇪 Sweden): World War I: The cargo ship was sunk in the North Sea 2 nmi east by south of Rattray Head, Aberdeenshire (57.58333°N, -1.65°W) by SMU U-17 (Germany) . Her crew survived.
 * SMS Meteor (auxiliary cruiser) : World War I: The auxiliary cruiser was scuttled in the North Sea. All on board were rescued by Royal Navy cruisers.
 * SMS T52 : World War I: The struck a mine and sank in the Gulf of Riga.
 * SMS T58 : World War I: The struck a mine and sank in the Gulf of Riga.
 * HMS The Ramsey : World War I: The armed boarding steamer was torpedoed and sunk in the North Sea
 * SMU U-12 (Austria-Hungary) : World War I: The submarine struck a mine and sank in the Venetian Lagoon with the loss of all seventeen crew.

9 August

 * HMS Lynx (1913) : World War I: The struck a mine and sank in the North Sea. There were 26 survivors from her crew, which numbered about 100.
 * Thrush ( undefined): World War I: The trawler was shelled and sunk in the Atlantic Ocean 50 nmi west of Eagle Island, County Mayo by SMU U-38 . Her crew survived.

10 August

 * SS Aura (1891) (🇳🇴 Norway): World War I: The coaster was sunk in the North Sea 13 nmi off Marstenen, Nordland 60.08333°N, 4.75°W by SMU U-25 . Her crew survived.
 * Esperance ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east north east of Cromer, Norfolk by SMU UB-10 . Her crew survived.
 *  François (🇫🇷 France: World War I: The barque was shelled and sunk in the Atlantic Ocean 60 nmi west south west of the Fastnet Rock (50.66667°N, -10.85°W) by SMU U-35 (Germany) . Her crew survived.
 * Morna (🇳🇴 Norway): World War I: The sailing vessel was sunk in the Atlantic Ocean 40 nmi south west of the Fastnet Rock (50.66667°N, -11.16667°W) by SMU U-35 (Germany) . Her crew survived.
 * SS Oakwood (1903) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 45 nmi south south east of the Old Head of Kinsale, County Cork by SMU U-38 . Her crew survived.
 * SS Rosalie (1914) ( undefined): World War I: The cargo ship was torpedoed and sunk in the North Sea off Blakeney, Norfolk by SMU UB-10 . Her crew survived.
 * SS Utopia (1891) ( undefined): World War I: The coaster was stopped, shelled and sunk in the North Sea 15 nmi east of St. Abb's Head, Aberdeenshire by SMU U-17 (Germany) . Her crew survived.

11 August

 * George Borrow ( undefined): World War I: The fishing smack was scuttled in the North Sea 15 nmi east north east of Cromer, Norfolk by SMU UB-10 . Her crew survived.
 * George Crabbe ( undefined): World War I: The fishing smack was scuttled in the North Sea 15 to 16 nmi east north east of Cromer by SMU UB-10 . Her crew survived.
 * Humphrey ( undefined): World War I: The fishing smack was scuttled in the North Sea 48 nmi east by south of Cromer by SMU UB-10 . Her crew survived.
 * Illustrious ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east by north of Cromer by SMU UB-10 . Her crew survived.
 * Leader ( undefined): World War I: The fishing smack was scuttled in the North Sea 20 nmi east by north of Lowestoft, Suffolk by SMU UB-6 . Her crew survived.
 * Ocean's Gift ( undefined): World War I: The fishing smack was scuttled in the North Sea 16 nmi east of Cromer by SMU UB-10 . Her crew survived.
 * Palm ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east by north of Cromer by SMU UB-10 . Her crew survived.
 * Trevear ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east by north of Cromer by SMU UB-10 . Her crew survived.
 * Welcome ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east by north of Cromer by SMU UB-10 . Her crew survived.
 * Young Admiral ( undefined): World War I: The fishing smack was scuttled in the North Sea 17 nmi east by north of Cromer by SMU UB-10 . Her crew survived.

12 August

 * SS Grodno (1912) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Arctic Sea 98 nmi north west of the Lofoten Islands, Norway (68.91667°N, 9.13333°W) by SMU U-22 (Germany) . Her crew survived.
 * SS Jacona ( undefined): World War I: The cargo ship struck a mine and sank in the North Sea 25 nmi north north west of Troupe Head, Banffshire with the loss of 29 of her crew.
 * SS Osprey (1905) ( undefined): World War I: The coaster was shelled and sunk in the Atlantic Ocean 40 nmi north east by north of Nush Terrah, County Kerry by SMU U-24 . Her crew survived.
 * Sunflower ( undefined): World War I: The fishing smack was scuttled in the North Sea 30 nmi east by north of Lowestoft, Suffolk by SMU UB-5 . Her crew survived.

13 August

 * Amethyst ( undefined): World War I: The fishing smack struck a mine and sank in the North Sea 7 nmi east south east of Lowestoft, Suffolk. Her crew survived.
 * SS Cairo (1882) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 34 nmi south south west of the Tuskar Rock (51.73333°N, -6.55°W) by SMU U-24 . Her crew survived.
 * RMS Campania ( undefined): 1915 Galveston hurricane: The ocean liner was driven ashore at Galveston, Texas, United States. She was refloated on 21 August.
 *  Curaçao ( undefined): The schooner was wrecked on Cayman Brac with the loss of all hands.
 * SS Eaton Hall ( undefined): 1915 Galveston hurricane: The cargo ship was driven ashore at Galveston.
 * E.M.W. ( undefined): World War I: The fishing smack was scuttled in the North Sea 29 nmi north east by east of Cromer, Norfolk by SMU UB-5 . Her crew survived.
 * SS Harlesden ( undefined): 1915 Galveston hurricane: The cargo ship was driven ashore at Galveston.
 * SS Hawkhead ( undefined): 1915 Galveston hurricane: The cargo ship was driven ashore at Galveston.
 * J.W.F.T. ( undefined): World War I: The fishing smack was scuttled in the North Sea 29 nmi north east by north of Cromer by SMU UB-5 . Her crew survived.
 * SS Ribston ( undefined): 1915 Galveston hurricane: The cargo ship was driven ashore at Galveston.
 * HMT Royal Edward ( undefined): World War I: The troopship was torpedoed and sunk in the Mediterranean Sea off Kandeloussa, Greece (36.51667°N, 25.85°W) by SM UB-14 with the loss of 935 of the 1,596 people on board.
 * SS Summerfield (1913) ( undefined): World War I: The coaster struck a mine and sank in the North Sea 2 nmi east of Lowestoft with the loss of three of her crew.
 * SS Sverige (1882) (🇸🇪 Sweden): World War I: The cargo ship struck a mine and sank in the North Sea 1.5 nmi south east of Lowestoft. Her crew survived.
 * SMU U-3 (Austria-Hungary) : World War I: The submarine was depth charged, shelled and sunk by FRENCH DESTROYER Bisson  with the loss of seven of her 21 crew.

14 August

 * SS Albis (1896) (🇳🇴 Norway): World War I: The coaster was sunk in the Barents Sea 60 nmi west north west of Stat (62.33333°N, 3.25°W) by SMU U-25 . Her crew survived.
 * Bona Fide ( undefined): World War I: The fishing smack was scuttled in the North Sea 35 nmi east north east of Lowestoft, Suffolk by SMU UB-4 . Her crew survived.
 * Gloria ( undefined): World War I: The trawler was shelled and sunk in the North Sea 55 nmi east by north of Aberdeen by SMU U-17 (Germany) . Her crew survived.
 * SS Princess Caroline ( undefined): World War I: The carho ship struck a mine and sank in the North Sea 14 nmi north by east of Kinnaird Head, Aberdeenshire with the loss of four of her crew.
 * White City ( undefined): World War I: The fishing smack was scuttled in the North Sea off Cromer, Norfolk by SMU UB-5 . Her crew survived.
 * HMT Worsley : World War I: The naval trawler struck a mine and sank in the North Sea off Aldeburgh, Suffolk with the loss of a crew member.

15 August

 * RUSSIAN MINELAYER Ladoga : World War I: The minelayer struck a mine and sank in the Baltic Sea off Örö, Sweden with the loss of five of her crew.
 *  Marie (🇩🇰 Denmark) World War I: The three-masted schooner was sunk in the North Sea 40 nmi off Kinnaird Head, Aberdeenshire, United Kingdom by SMU U-17 (Germany) . Her crew survived.
 * SS Sverige (🇸🇪 Sweden): The cargo ship was beached at Halifax, Nova Scotia, Canada. She broke in two and was a total loss.
 * SMS T46 : World War I: The struck a mine and sank in the Gulf of Riga.
 * SM UB-4 : World War I: The Type UB I submarine was shelled and sunk in the North Sea off Lowestoft, Suffolk, United Kingdom (52.71667°N, 2.3°W) by HM ARMED SMACK Inverlyon with the loss of all fourteen crew.

16 August

 * RUSSIAN MINESWEEPER Linnea : World War I: The auxiliary minesweeper struck a mine and sank in the Baltic Sea off Worms Island.
 * HMT Japan : World War I: The naval trawler struck a mine and sank in the North Sea off the Shipwash Lightship ( undefined) with the loss of five of her crew.
 * HMT Lundy : The naval trawler collided with another vessel and sank in the Dardaneles.
 * SS Romulus (1913) (🇳🇴 Norway): World War I: The coaster was sunk in the North Sea 100 nmi west south west of Lindesnes, Vest-Agder (56.5°N, 3.83333°W) by SMU U-17 (Germany) . Her crew were rescued by SS Else (🇩🇰 Denmark).
 * SS Serbino (1913) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Baltic Sea off the Worms Lighthouse by SMU U-9 . Her crew survived.
 * SS Tello (1900) (🇳🇴 Norway): World War I: The cargo ship was captured and scuttled in the North Sea (57°N, 5.05°W) by SS Götaland (1899) undefined), which had a prize crew on board from SMU U-17 (Germany).

17 August

 * SS Bonny (1891) ( undefined): World War I: The cargo ship was shelled and sunk in St. George's Channel 16 nmi south by east of the Tuskar Rock, Ireland by SMU U-38 . Her crew survived.
 * George Baker ( undefined): World War I: The drifter was shelled and sunk in the Atlantic Ocean 45 nmi north of the Bishop Rock by SMU U-38 . Her crew survived.
 * SS Glenby (1900) ( undefined): World War I: The collier was shelled and sunk in St. George's Channel 30 nmi north of the Smalls Lighthouse by SMU U-38 with the loss of two crew.
 * SS Isidoro (1897) (🇪🇸 Spain): World War I: The cargo ship was sunk in the Atlantic Ocean 17 nmi east sout east of the Tuskar Rock by SMU U-38 . Her crew survived.
 * SS Kirkby (1891) ( undefined): World War I: The collier was torpedoed and sunk in the Irish Sea 23 nmi west by south of Bardsey Island, Pembrokeshire by SMU U-38 . Her crew survived.
 * SS Maggie (1907) ( undefined): World War I: The coaster was shelled and sunk in the Irish Sea 8 nmi east of the South Arklow Lightship ( undefined) by SMU U-38 . Her crew survived.
 * SS Mineral (1890) (🇳🇴 Norway): World War I: The coaster was shelled and sunk in the North Sea off Marstenen, Nordland by SMU U-25 . Her crew survived.
 * SS Paros (1898) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Irish Sea 30 nmi west of Bardsey Island by SMU U-38 . Her crew survived.
 * Repeat ( undefined): World War I: The trawler was shelled and sunk in the Irish Sea 18 nmi west by south of Bardsey Island by SMU U-38 . Her crew survived.
 * SS The Queen (1897) ( undefined): World War I: The passenger ship was shelled and sunk in St. George's Channel 40 nmi north east of the Smalls Lighthouse by SMU U-38 . Her crew survived.
 * SS Thornfield (1913) ( undefined): World War I: The coaster was shelled and sunk in St. George's Channel 25 nmi north north east of the Smalls Lighthouse by SMU U-38 . Her crew survived.
 * SMS V99 : World War I: The was shelled and damaged in the Gulf of Riga by RUSSIAN DESTROYER Novik . She then struck two mines and sank whilst attempting to escape.

18 August

 * SS Ben Vrachie (1905) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 55 nmi north west by north of the Isles of Scilly by SMU U-27 (Germany) . Her crew survived.
 * HMS E13 : World War I: The E-class submarine ran aground on Saltholm, Denmark. She was subsequently attacked by SMS G 132 and another torpedo boat (both ) with the loss of fifteen of her 30 crew. The survivors were rescued by Royal Danish Navy torpedo boats. HMS E13 was later refloated but was declared beyond repair. She was scrapped in 1922.
 * SS Gladiator (1904) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 68 nmi north by west of the Bishop Rock, Isles of Scilly by SMU U-27 (Germany) . Her crew survived.
 * SS Magda (1905) (🇳🇴 Norway): World War I: The cargo ship was sunk in the Atlantic Ocean 8 nmi off Trevose Head, Cornwall, United Kingdom (50.65°N, -5.15°W) by SMU U-27 (Germany) . Her 16 crew survived.
 * HMT Poonah : The naval trawler collided with another vessel and sank in Suvla Bay.
 * SS Sverresborg (🇳🇴 Norway): World War I: The cargo ship was sunk in the Atlantic Ocean 8 nmi off Trevose Head (50.83333°N, -5.16667°W) by SMU U-27 (Germany) . Her crew survived.

19 August

 * SS Arabic (1902) ( undefined): World War I: The ocean liner was torpedoed and sunk in the Atlantic Ocean off the Old Head of Kinsale, County Donegal by SMU U-24 with the loss of 47 lives.
 * SS Baron Erskine (1911) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 25 nmi north north west of the Bishop Rock, Isles of Scilly (50.2°N, -6.83333°W) by SMU U-38 . Her crew survived.
 * SS Ben Vrackie ( undefined): The collier was lost on this date.
 * SS Bras (1889) (🇳🇴 Norway): World War I: The cargo ship was captured, shelled and sunk in the North Sea 4 nmi off the Egerø Lighthouse by SMU U-25 . Her crew survived.
 * SS Dunsley (1913) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 48 nmi south by west of the Old Head of Kinsale, County Cork (50.91667°N, -8.3°W) by SMU U-24 with the loss of two of her crew.
 * SS New York City (1907) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 44 nmi south south east of the Fastnet Rock by SMU U-24 . Her crew survived.
 * SS Pena Castillo (1899) (🇪🇸 Spain): World War I: The cargo ship was sunk in the Atlantic Ocean 33 nmi north of the Wolf Rock, Cornwall United Kingdom (50.5°N, -5.81667°W) by SMU U-27 (Germany) with the loss of 23 crew.
 * SS Restormel (1901) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 28 nmi north north west of the Bishop Rock (50.25°N, -6.86667°W) by SMU U-38 . Her crew survived.
 * SMS S31 : World War I: The struck a mine and sank in the Gulf of Riga.
 * SS Samara (1906) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 35 nmi west of the Bishop Rock (49.75°N, -7.33333°W) by SMU U-38 . Her crew survived.
 *  St. Olaf ( undefined): World War I: The schooner was shelled and sunk in the Atlantic Ocean 58 nmi off Galley Head, County Cork (50.55°N, -8.48333°W) by SMU U-24 . Her crew survived.
 * SMU U-27 (Germany) : World War I: Baralong Incident: The Type U-27 submarine was shelled and sunk in the Western Approaches 50.71667°N, -7.36667°W by HMS Baralong with the loss of all 37 crew.

20 August

 * SS Bittern (1912) ( undefined): World War I: The cargo ship was shelled and sunk in the Bay of Biscay off Ouessant, Finistère, France 48.88333°N, -6.3°W by SMU U-38 . Her crew survived.
 * SS Carterswell (1914) ( undefined): World War I: The cargo ship was shelled and sunk in the Bay of Biscay 65 nmi north west of Ouessant by SMU U-38 . Her crew survived.
 * SS Daghestan (🇧🇪 Belgium): World War I: The tanker was captured, shelled and sunk in the Bay of Biscay off Ouessant (48.58333°N, -6.41667°W) by SM U-38.
 *  Martha Edwards ( undefined): World War I: The three-masted schooner was shelled and sunk in the Bay of Biscay 62 nmi north north west of Ouessant by SMU U-38 . Her crew survived.
 * SS Silver Wings ( undefined): The cargo ship ran aground on Sable Island, Nova Scotia, Canada and was abandoned.
 * RUSSIAN GUNBOAT Sivutch : World War I: The gunboat was sunk in the Gulf of Riga in a battle with a Kaiserliche Marine cruiser and gunboat.

21 August

 * SS Cober (1904) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Atlantic Ocean 45 nmi south south west of the Isles of Scilly (49.16667°N, -6.5°W) by SMU U-38 . Her crew survived.
 * SS Ruel (1913) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 45 nmi south west of the Bishop Rock, Isles of Scilly (49.41667°N, -7.16667°W) by SMU U-38 with the loss of a crew member.
 * SS William Dawson (1872) ( undefined): World War I: The coaster struck a mine and sank in the English Channel 1 nmi off Boulogne, Pas-de-Calais, France with the loss of five of her crew.
 * SS Windsor (1912) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 70 nmi south west of the Wolf Rock, Cornwall by SMU U-38 . Her crew survived.

22 August

 * SS Diomed (1895) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 57 nmi west north west of the Isles of Scilly (50.35°N, -6.66667°W) by SMU U-38 . Her crew survived.
 * Orion (🇧🇷 Brazil): The passenger ship ran aground at Macucos and was wrecked. All on board were rescued.
 * SS Palmgrove (1896) ( undefined): World War I: The cargo ship was shelled and sunk in the Atlantic Ocean 40 nmi west by north of the Isles of Scilly (49.41667°N, -7.66667°W) by SMU U-38 . Her crew survived.

23 August

 * SMS A15 : World War I: The was shelled and sunk in the North Sea off the coast of Belgium by FRENCH DESTROYER Branlebas and FRENCH DESTROYER Oriflamme (both ).
 * Boy Bert ( undefined): World War I: The fishing smack was scuttled in the North Sea 50 nmi off Lowestoft, Suffolk by SMU UB-12 . Her crew survived.
 * Commander Boyle ( undefined): World War I: The trawler struck a mine and sank in the North Sea 40 nmi north by west of Rattray Head, Aberdeenshire with the loss of three of her crew.
 * Integrity ( undefined): World War I: The fishing smack was scuttled in the North Sea 24 nmi east south east of Cromer, Norfolk by SMU UB-12 . Her crew survived.
 * HMT Miura : World War I: The naval trawler was torpedoed and sunk in the North Sea off Great Yarmouth, Norfolk (52.6°N, 1.9°W) by SMU UB-2 with the loss of eleven crew.
 * SS Silvia (1913) ( undefined): World War I: The tanker was shelled and sunk in the Atlantic Ocean 47 nmi west of the Fastnet Rock (51.83333°N, -10.76667°W) by SMU U-38 . Her crew survived.
 * SS Trafalgar (1911) ( undefined): World War I: The cargo ship was scuttled in the Atlantic Ocean 54 nmi south west by west of the Fastnet Rock (50.88333°N, -10.8°W) by SMU U-38 . Her crew survived.

25 August

 * SS Disa (1903) (🇸🇪 Sweden): World War I: The coaster struck a mine and sank in the North Sea 5 to 6 nmi north by east of the Shipwash Lightship ( undefined) (52.15°N, 1.65°W). Her crew survived.
 * SS Petshora (1910) ( undefined): World War I: The cargo ship was sunk in the Gulf of Finland by SMU U-26.
 * Young Frank ( undefined): World War I: The fishing smack was scuttled in the North Sea 38 nmi north by east of Lowestoft, Suffolk by SMU UB-12 . Her crew survived.

26 August

 * HMT Jasper (1912) : The naval trawler was lost on this date.
 * Sahina Noria ( undefined): World War I: The sailing vessel was sunk in the Aegean Sea off Orak, Rabbit Islands, Turkey by SMU UC-13.

28 August

 * HMT Dane : World War I: The naval trawler struck a mine and sank in the North Sea off Aldeburgh, Suffolk with the loss of five of her crew.
 * HMY Dolores : The naval yacht was destroyed by fire at Douglas, Isle of Man.

29 August

 * HMS C29 : World War I: The C-class submarine struck a mine and sank in the Humber Estuary with the loss of all sixteen crew.
 * SS Sir William Stephenson (1906) ( undefined): World War I: The passenger ship struck a mine and sank in the North Sea off the Cockle Lightship with the loss of two lives.

30 August

 * SS Bretwalda (1911) ( undefined): World War I: The cargo ship struc a mine and was damaged in the North Sea 3 nmi east of the Longsand Lightship ( undefined). She was beached but was later refloated, repaired and returned to service.
 * SS Honiton (1915) ( undefined): World War I: The cargo ship struck a mine and was damaged in the North Sea 2.5 nmi east of the Longsand Lightship. She was beached at Shoeburyness, Essex but was declared a total loss.
 * SS Zemlya ( undefined): World War I: The coaster was sunk in the Baltic Sea off Worms Island (59.03333°N, 23.03333°W) by SMU U-26.

31 August

 * SS Edith (1882) (🇺🇸 United States): The cargo ship foundered in the Pacific Ocean 47 nmi east of  Cape St. Elias, Alaska. Her crew were rescued by SS Mariposa (🇺🇸 United States).