List of shipwrecks in August 1916

The list of shipwrecks in August 1916 includes some ships sunk, foundered, grounded, or otherwise lost during August 1916.

1 August

 * SS Aaro (1909) ( undefined): World War I: The cargo ship was torpedoed and sunk in the North Sea 25 nmi south west of Stavanger, Rogaland, Norway by SMU U-20 (Germany) . Three of her crew were killed, survivors were taken as prisoners of war.
 * Braconash ( undefined): World War I: The fishing vessel was scuttled in the North Sea 36 nmi south east by east of the mouth of the River Tyne by SMU UB-39 . Her crew survived.
 * SMS G94 : World War I: The struck a mine and sank in the North Sea with the loss of thirteen of her crew.
 * SS Heighington (1891) ( undefined): World War I: The cargo ship was torpedoe and sunk in the Mediterranean Sea 40 nmi north east of Cape Serrat, Tunisia by SMU U-35 (Germany) . Her crew survived.
 * Helvetia ( undefined): World War I: The trawler was scuttled in the North Sea 5 nmi east of Seaham, County Durham by SMU UB-39 . Her crew survived.
 * SS Hudiksvall (1849) (🇸🇪 Sweden): World War I: The coaster was sunk in the Baltic Sea 30 nmi off Rauma, Finland by SMU UB-36 . Her crew survived.
 * King James ( undefined): World War I: The fishing vessel was sunk in the North Sea 8 nmi east of Seaham by SMU UB-39 . Her crew survived.
 * SS Pehr Brahe (1864) (🇫🇮 Finland): World War I: The coaster was sunk in the Baltic Sea 15 nmi off Rauma by SMU UB-36.
 * Rhodesia ( undefined): World War I: The trawler was scuttled in the North Sea 4 nmi east north east of the mouth of the River Tyne by SMU UB-39 . Her crew survived.
 * Tatiana ( undefined): World War I: The trawler was sunk in the North Sea off the mouth of the River Tyne by SMU UB-39 . Her crew survived.

2 August

 * SS Bror Oskar (1857) (🇸🇪 Sweden): World War I: The coaster was sunk in the Baltic Sea 15 nmi off Rauma, Finland by SMU UB-20 . Her crew survived.
 * SS Commerce (1898) (🇸🇪 Sweden): World War I: The coaster was sunk in the Baltic Sea off Hudiksvall, Gävleborg County (61.83333°N, 18.03333°W) by SMU UB-20 . Her crew survived.
 *  Eugenia ( undefined): World War I: The barque was sunk in the Mediterranean Sea 35 nmi off the Isola de Vecca (38.66667°N, 7.75°W) by SMU U-35 (Germany).
 *  G. C. Gradwell ( undefined): World War I: The schooner was shelled and sunk in the English Channel 20 nmi west north west of Cap d'Antifer, Seine-Maritime, France by SMU UB-18 . Her crew survived.
 * SS Kohina Maru (1884) (🇯🇵 Japan): World War I: The cargo ship was sunk in the Mediterranean Sea off Alexandria, Egypt by SMU UB-46 . Her crew survived.
 * ITALIAN BATTLESHIP Leonardo da Vinci : The capsized at Taranto with the loss of 249 of her 1,000 crew. She was refloated on 17 September 1919 but was not repaired and was scrapped in 1923.
 *  Margaret Sutton ( undefined): World War I: The brigantine was scuttled in the English Channel 35 nmi south south east of St. Catherine's Point, Isle of Wight by SMU UB-18 . Her crew survived.
 *  Neptune ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea 25 nmi off Cap Sandolo, Algeria (39°N, 7.5°W) by SMU U-35 (Germany).
 * Olympia ( undefined): World War I: The trawler was shelled and sunk in the North Sea 3 nmi east of Coquet Island, Northumberland by SMU UB-39 . Her crew survived.
 *  S.D. ( undefined): World War I: The Thames barge was shelled and sunk in the English Channel 18 nmi north west of Cap d'Antifer by SMU UB-18 . Her crew survived.
 * Smiling Morn ( undefined): World War I: The fishing vessel was scuttled in the North Sea east of Coquet Island by SMU UB-39 . Her crew survived.
 * Twiddler ( undefined): World War I: The drifter was scuttled in the North Sea east of Coquet Island by SMU UB-39 . Her crew survived.
 *  Vera (🇸🇪 Sweden): World War I: The brigantine was sunk in the Baltic Sea off the Finngrundet Lightship (🇸🇪 Sweden) by SMU UB-20 . Her crew survived.
 * SS Vermland (1889) (🇸🇪 Sweden): World War I: The coaster was sunk in the Baltic Sea off the Finngrundet Lightship (🇸🇪 Sweden) by SMU UB-20 . Her crew survived.
 * SS Zeeland (1907) (🇳🇱 Netherlands): World War I: The cargo ship was shelled and sunk in the North Sea 7 nmi east of Sunderland, County Durham (55°N, -1.28333°W) by SMU UB-39 . Her crew survived.

3 August

 * SS Badger (1894) ( undefined): World War I: The coaster was shelled and sunk in the English Channel 30 nmi south west of St. Catherine's Point, Isle of Wight by SMU UB-18.
 * HMS Clacton (1904) : World War I: The auxiliary minesweeper was torpedoed and sunk in the Aegean Sea (40.76667°N, 23.88333°W) by SMU U-73 with the loss of five crew.
 *  Fortuna ( undefined): World War I: The schooner was scuttled in the English Channel 15 nmi south south west of Portland Bill, Dorset by SMU UB-18 . Her crew survived.
 *  Jacqueline (🇫🇷 France): World War I: The schooner was sunk in the English Channel 14 nmi north of Cap de la Hague, Manche (49.95°N, -2°W) by SMU UB-18 . Her crew survived.
 * Lucania ( undefined): World War I: The drifter was scuttled in the North Sea 4 nmi east by south of Dunstanburgh, Northumberland by SMU UB-39 . Her crew survived.
 * Merchant Prince ( undefined): World War I: The trawler was scuttled in the North Sea 9 nmi east by south of Dunstanburgh by SMU UB-39 . Her crew survived.
 *  Nancy ( undefined): The schooner was run into and sunk by SS Avance (🇸🇪 Sweden) in the North Sea off Great Yarmouth, Norfolk.
 * HMT Rooke : The naval trawler was lost on this date.
 * SS Sphene (1902) ( undefined): World War I: The coaster was scuttled in the English Channel 26 nmi south west of St. Catherine's Point (50.06667°N, -1.8°W) by SMU UB-18 . Her crew survived.
 * Trawler Prince ( undefined): World War I: The trawler was scuttled in the North Sea 12 nmi south east of the Longstone Lighthouse, Northumberland by SMU UB-39 . Her crew survived.
 * SS Tricoupis (1892) (🇬🇷 Greece): World War I: The cargo ship was sunk in the Mediterranean Sea off the Île du Planier, Bouches-du-Rhône, France (42.13333°N, 5.35°W) by SMU U-35 (Germany) . Her crew survived.

4 August

 *  Demaris ( undefined): World War I: The schooner was scuttled in the English Channel 20 nmi north of Alderney, Channel Islands by SMU UB-18 . Her crew survived.
 *  Ermenilda ( undefined): World War I: The schooner was scuttled in the English Channel 24 nmi south south west of Portland Bill, Dorset by SMU UB-18 . Her crew survived.
 * SS Favonian (1894) ( undefined): World War I: The cargo ship was shelled and sunk in the Mediterranean Sea off the Île du Planier, Bouches-du-Rhône, France (42.95°N, 5.11667°W) by SMU U-35 (Germany) . Her crew survived.
 * SS Jägersborg (1883) (🇩🇰 Denmark): World War I: The cargo ship was scuttled in the North Sea 12 nmi north east of the Longstone Lighthouse, Northumberland, United Kingdom by SMU UB-39 . Her crew survived.
 * SS Siena (1905) ( undefined): World War I: The passenger ship was sunk in the Mediterranean Sea off the Île du Planier (42.91667°N, 5.16667°W) by SMU U-35 (Germany).
 * SS Stamfordham (1898) ( undefined): World War I: The coaster was shelled and sunk in the North Sea 8 nmi south of the Longstone Lighthouse by SMU UB-39 . Her crew survived.
 * SS Teti (1883) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea off the Île du Planier (43.16667°N, 4.41667°W) by SMU U-35 (Germany) . Her crew survived.
 * SS Tottenham (1906) ( undefined): World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 22 nmi south west of the Île du Planier (42.91667°N, 5.25°W) by SMU U-35 (Germany) . Her crew survived.

5 August

 * SS Achilleus (1873) (🇬🇷 Greece): World War I: The coaster was shelled and sunk in the Gulf of Lion (42.03333°N, 3.41667°W) by SMU U-35 (Germany) . Her crew survived.
 * SS Aranda (1890) (🇳🇴 Norway): World War I: The cargo ship struck a mine and was damaged in the North Channel (56.31667°N, -7.11667°W) with the loss of two of her crew. She was towed into Lough Foyle where she sank.
 * Egyptian Prince ( undefined): World War I: The trawler was scuttled in the North Sea 12 nmi south south east of the Longstone Lighthouse, Northumberland by SMU UB-39 . Her crew survived.
 * SS Mount Coniston (1892) ( undefined): World War I: The cargo ship was scuttled in the Mediterranean Sea 7 nmi east by south of the Medes Islands, Spain by SMU U-35 (Germany) . Her crew survived.
 * SS Spiral (1906) ( undefined): World War I: The cargo ship was scuttled in the English Channel 40 nmi west south west of St. Catherine's Point, Isle of Wight by SMU UB-18 . Her crew survived.
 * St. Olive ( undefined): World War I: The trawler was scuttled in the North Sea 11 nmi east of Coquet Island, Northumberland by SMU UB-39 . Her crew survived.

6 August

 * SS Libestad (🇲🇽 Mexico): The cargo ship was wrecked at Cape San Antonio, Cuba.
 * Loch Lomond ( undefined): World War I: The fishing smack was shelled and sunk in the North Sea 18 nmi east of Lowestoft, Suffolk by SMU UB-29 . Her crew survived.

7 August

 * Falcon ( undefined): The cargo ship caught fire and sank in the River Thames at Deptford, London. She was refloated the next day.
 * HMT John High : World War I: The naval trawler struck a mine and sank in the White Sea (67.56667°N, 41.31667°W) with the loss of fourteen crew.
 * SS Newburn (1904) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea 34 nmi north north east of Dragonera, Spain by SMU U-35 (Germany) . Her crew were rescued by SS Daisy (🇩🇰 Denmark).
 * SS Tibor (🇫🇷 France): The cargo ship caught fire and sank at Estaque, Bouches-du-Rhône.
 * SS Trident (1902) ( undefined): World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 34 nmi north north east of Dragonera by SMU U-35 (Germany) . Her crew were rescued by SS Daisy (🇩🇰 Denmark).

8 August

 * SS Imperial (1902) ( undefined): World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 38 nmi south west by west of the Île du Planier (42.71667°N, 4.5°W) by SMU U-35 (Germany) . Her crew survived.
 *  Speme ( undefined): World War I: The barquentine was sunk in the Gulf of Lion by SMU U-35 (Germany).
 * SMU UB-43 : World War I: The Type UB II submarine departed Cattaro, Austria-Hungary for Hersingstand, Turkey. No further trace, lost with all 24 crew.

9 August

 * SS Antiope (1906) ( undefined): World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 88 nmi south west by west of Marseille, Bouches-du-Rhône, France (42.26667°N, 4.05°W) by SMU U-35 (Germany) . Her crew survived.
 * HMS B10 : World War I: The B-class submarine was bombed and sunk at Venice, Italy by Kaiserliche und Königliche Seeflugwesen aircraft.
 * SS Danevang (1901) (🇩🇰 Denmark): World War I: The cargo ship was sunk in the North Sea 60 nmi east of Tynemouth, Northumberland, United Kingdom (55.75°N, 0.23333°W) by SMU UB-37 . Her crew survived.
 * SS Ganekogorta Mendi (1908) (🇪🇸 Spain): World War I: The cargo ship was sunk in the Mediterranean Sea 10 nmi north east of Port-Vendres, Pyrénées-Orientales, France by SMU U-35 (Germany).
 * SS Henri Elisa (1911) (🇫🇷 France): World War I: The coaster was sunk in the English Channel 20 nmi east of Barfleur, Manche (49.76667°N, -0.76667°W) by SMU UB-18.
 *  Lorenzo Donato ( undefined: World War I: The schooner was sunk in the Mediterranean Sea 38.1°N, 18.98333°W) by SMU U-73.
 * SS Sebastiano (1897) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea 40 nmi east north east of Cape San Sebastian, Spain by SMU U-35 (Germany) . Her crew survived.
 * Vassilaos (🇬🇷 Greece): World War I: The sailing ship was sunk in the Mediterranean Sea by SMU UB-46.

10 August
For the sinking of the Japanese cruiser Kasagi on this date, see the entry for 20 July 1916
 *  Annette Marie (🇫🇷 France): World War I: The schooner was sunk in the English Channel 10 nmi south east of Barfleur, Manche (49.75°N, -0.91667°W) by SMU UB-18 . Her crew survived.
 * SS Credo (1901) (🇳🇴 Norway): World War I: The coaster was sunk in the English Channel 8 nmi east north east of Barfleur (49.91667°N, -0.91667°W) by SMU UB-18 . Her crew were rescued by SS Robert (1899) (🇩🇰 Denmark).
 * Glitra (🇳🇴 Norway): The cargo ship ran aground at Huxter, Sandness, Shetland Islands, United Kingdom. She sank two days later.
 * HMT Irawadi : World War I: The naval trawler was wrecked on the Tigani Rocks in the Mediterranean Sea.
 * SS Marie (1873) (🇫🇷 France): World War I: The coaster was scuttled in the English Channel 12 nmi east north east of Barfleur (49.75°N, -0.91667°W) by SMU UB-18 . Her crew were rescued by SS Robert (1899) (🇩🇰 Denmark).
 * Saint Pierre (🇫🇷 France): World War I: The sailing vessel was sunk in the English Channel 18 nmi north north east of Barfleur by SMU UB-18 . Her crew survived.
 * SS San Bernando (1896) ( undefined): World War I: The cargo ship was scuttled in the North Sea 17 nmi off the Longstone Lighthouse (55.5°N, -1°W) by SMU UB-19 . Her crew were rescued by the trawler Magnus ( undefined).
 * SS Sora (1888) (🇳🇴 Norway): World War I: The cargo ship was sunk in the English Channel north east of Barfleur (49.75°N, -0.91667°W) by SMU UB-18 . Her crew were rescued by SS Robert (1899\) (🇩🇰 Denmark).
 * SS Temmei Maru (1889) (🇯🇵 Japan): World War I: The cargo ship was sunk in the Mediterranean Sea south of France (42.83333°N, 4.91667°W) by SMU U-35 (Germany) . Her crew survived.

11 August

 * SS Eleftheria (🇬🇷 Greece): The troopship caught fire and was beached in the Aegean Sea off Skiathos with the loss of 40 lives.
 * SS F. Stobart (1895) ( undefined): World War I: The cargo ship struck a mine and sank in the North Sea off Aldeburgh, Suffolk (52.16667°N, 1.70833°W) with the loss of four of her crew.
 *  Inverdruie (🇳🇴 Norway): World War I: The three-masted barque was sunk in the North Sea (56.76667°N, 2.76667°W) by SMU U-66 . Her crew survived.
 *  Kings Hill ( undefined): The schooner was in collision with another vessel in the Irish Sea 6 nmi south west by west of the Caernarvon Bay Lightship ( undefined) and sank. Her crew were rescued.
 * SS Pagasarri (1898) (🇪🇸 Spain): World War I: The cargo ship was sunk in the Mediterranean Sea off Savona, Liguria, Italy (40.5°N, 10.5°W) by SMU U-35 (Germany).
 *  Rufus (🇳🇴 Norway): World War I: The brig was sunk in the North Sea 60 nmi east by north of Sunderland, County Durham, United Kingdom by SMU UB-37 . Her crew survived.
 * SS Skernahan ( undefined): The cargo ship collided with SS Yorkshire ( undefined) in the Irish Sea and sank. Her crew were rescued by Yorkshire.

12 August

 * Gina ( undefined): World War I: The sailing ship, either a barque or a schooner, was sunk in the Mediterranean Sea 40 nmi south of the Porquerolles (42.83333°N, 6.83333°W) by SMU U-35 (Germany).
 * RUSSIAN DESPATCH VESSEL Kovda : World War I: The despatch vessel struck a mine and sank in the White Sea (67.58333°N, 41.36667°W).
 * SS Nereus (1901) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea 4 nmi off Cape Garoupe, Alpes-Maritimes, France (43.46667°N, 7.15°W) by SMU U-35 (Germany) . Her crew survived.
 *  Regina Pacis ( undefined): World War I: The full-rigged ship was shelled and sunk in the Mediterranean Sea off Antibes, Alpes-Maritimes (43.45°N, 7.55°W) by SMU U-35 (Germany).
 *  Saint Gaetan (🇫🇷 France): World War I: The brigantine was shelled and sunk in the Mediterranean Sea off Antibes (43.46667°N, 7.15°W) by SMU U-35 (Germany) . Her crew survived.

13 August

 *  Balmoral ( undefined): World War I: The barque was sunk in the Mediterranean Sea off Porto Maurizio, Liguria by SMU U-35 (Germany).
 *  Eurasia ( undefined): World War I: The full-rigged ship was sunk in the Mediterranean Sea south of Savona, Liguria by SMU U-35 (Germany).
 *  Francesco Saverio D ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea south west of Genoa, Liguria by SMU U-35 (Germany).
 * Fremad (🇳🇴 Norway): World War I: The sailing vessel was sunk in the North Sea 50 nmi east of Hartlepool, County Durham, United Kingdom by SMU UB-37 . Her crew survived.
 * SS Ivar (1907) (🇩🇰 Denmark): World War I: The cargo ship was sunk in the Mediterranean Sea 30 nmi south east of Capo Mele, Liguria by SMU U-35 (Germany) . Her crew survived.
 * HMS Lassoo (1915) : World War I: The destroyer was torpedoed and sunk in the North Sea off the Maas Lightship (🇳🇱 Netherlands) (52.05°N, 3.65°W) by SMU UB-10  with the loss of six of her 77 crew.
 *  Pepita (🇸🇪 Sweden): World War I: The brig was sunk in the North Sea 25 nmi off the Longstone Lighthouse, Northumberland, United Kingdom by SMU UB-37 . Her crew survived.
 *  Respit (🇳🇴 Norway): World War I: The barque was sunk in the North Sea (54.8°N, 1.25°W) by SMU UB-37 . Her crew survived.

14 August

 *  Emilia ( undefined): World War I: The three-masted schooner was sunk in the Mediterranean Sea off Cape Corse, Corsica, France by SMU U-35 (Germany) . Her crew survived.
 *  Francesca ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea north of Cape Corse by SMU U-35 (Germany).
 *  Henriette B. ( undefined): World War I: The brigantine was sunk of Cape Corse by SMU U-35 (Germany).
 *  Ida ( undefined): World War I: The three-masted schooner was sunk in the Mediterranean Sea off Cape Corse by SMU U-35 (Germany) . Her crew survived.
 *  Lavinia ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea off Cape Corse by SMU U-35 (Germany).
 *  Louis B. ( undefined): World War I: The schooner was sunk in the Mediterranean Sea off Cape Corse by SMU U-35 (Germany).
 * HMT Neath Castle : The naval trawler collided with a Dutch merchant ship and sank off the Orkney Islands.
 * Pantellaria ( undefined): World War I: The vessel was torpedoed and sunk in the Mediterranean Sea 40 nmi off Taranto, Apulia (39.91667°N, 17.25°W) by SMU U-4 (Austria-Hungary).
 * Pausania ( undefined): World War I: The sailing vessel was sunk in the Mediterranean Sea north east of Cape Corse by SMU U-35 (Germany).
 * HMS Remembrance : World War I: The Q-ship was sunk in the Aegean Sea north of Paros, Greece by SMU U-38 . Her crew survived.
 *  Rosario ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea east of Cape Corse by SMU U-35 (Germany).
 * San Francesco di Paolo ( undefined): World War I: The sailing vessel was sunk in the Mediterranean Sea off Cape Corse by SMU U-35 (Germany).
 * SS San Giovanni Batista (1875): World War I: The cargo ship was sunk in the Mediterranean Sea east of Cape Corse by SMU U-35 (Germany) . Her crew survived.
 * San Giuseppe Patriarca ( undefined): World War I: The sailing vessel was sunk in the Mediterranean Sea north east of Cape Corse by SMU U-35 (Germany).

15 August

 * SS Augusta (1873) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea 45 nmi off Cape Figari, Sardinia by SMU U-35 (Germany).
 * Candida Altieri ( undefined): World War I: The sailing vessel was sunk in the Mediterranean Sea east of Corsica by SMU U-35 (Germany).
 * HMS E4 and HMS E41 (both ): The E-class submarines collided in the North Sea off Harwich, Essex. Both vessels sank but were later salvaged, repaired and returned to service.
 * SMS V162 : World War I: The struck a mine and sank in the Baltic Sea.
 *  Vergine di Pompei ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea east of Corsica (41.5°N, 10.08333°W) by SMU U-35 (Germany).

16 August

 * SS Admiral Clarke (🇺🇸 United States): The cargo ship foundered in the Atlantic Ocean. Her crew were rescued by Pama (flag unknown).
 *  Madre ( undefined): World War I: The barque was sunk in the Mediterranean Sea off Sardinia (38.33333°N, 11.16667°W) by SMU U-35 (Germany).

17 August

 * SS Stampalia (1909) ( undefined): World War I: The passenger ship was sunk in the Mediterranean Sea 30 nmi south of Cape Matapan, Greece (36.66667°N, 22.16667°W) by SMU UB-47.
 * HMY Zaida : World War I: The naval yacht was sunk in the Gulf of Alexandretta by a Kaiserliche Marine U-boat.

18 August

 * SS Swedish Prince (1896) ( undefined): World War I: The cargo ship was shelled sunk in the Mediterranean Sea off Pantellaria, Italy (36.9°N, 11.7°W) by SMU U-35 (Germany) with the loss of a crew member. Three of the survivors were taken as prisoners of war.
 * SS Erix (1880) ( undefined): World War I: The coaster was sunk in the Malta Channel (36.15°N, 15.81667°W) by SMU U-35 (Germany).

19 August

 *  Dea ( undefined): World War I: The brigantine was sunk in the Strait of Sicily by SMU U-38.
 * HMS Falmouth (1910) : World War I: The cruiser was torpedoed and sunk in the North Sea (53.98222°N, -0.075°W) by SMU U-63 and SMU U-66 (both ).
 *  Mary Hendry ( undefined): The schooner was wrecked at Burgeoo, Newfoundland. Her crew were rescued.
 * HMS Nottingham (1913) : World War I: The cruiser was torpedoed and sunk in the North Sea (55.56667°N, 0.2°W by SMU U-52  with the loss of 38 of her 433 crew.

20 August

 * Dragoon ( undefined): World War I: The fishing smack was scuttled in the North Sea 36 nmi north east by north of Cromer, Norfolk by SMU UC-10 . Her crew survived.
 * HMS Falmouth (1910) : World War I: The cruiser, which had been torpedoed and damaged the previous day by SMU U-66, was torpedoed and sunk in the North Sea off Flamborough Head, Yorkshire by SMU U-63 (Germany) . with the loss of eleven of her 433 crew.

21 August

 * RUSSIAN DESTROYER Dobrovoletz : World War I: The struck a mine and sank in the Irben Strait.
 *  Maria ( undefined): World War I: The barquentine was sunk in the Mediterranean Sea east of Sicily (37.06667°N, 16.85°W by SMU U-34 (Germany).
 * SS Saronic (🇺🇸 United States): The cargo ship sprang a leak in Lake Erie and was beached at Cleveland, Ohio. She was subsequently destroyed by fire.
 * SM UC-10 : World War I: The Type UC I submarine was torpedoed and sunk in the North Sea (52.03333°N, 3.9°W) by HMS E54 with the loss of all eighteen crew.

22 August

 * HMS E16 : World War I: The E-class submarine struck a mine and sank in the Heligoland Bight with the loss of all 30 crew.
 * San Pietro ( undefined): World War I: The fishing vessel was sunk in the Strait of Sicily by SMU U-34 (Germany).

23 August

 * HMT Birch : World War I: The naval trawler struck a mine and sank in the North Sea off Great Yarmouth, Norfolk (52.7°N, 2.18333°W) with the loss of three of her crew.
 * SS Cossack (🇳🇴 Norway): The cargo ship foundered in the Atlantic Ocean. Thirteen crew were rescued.
 *  Elios ( undefined): World War I: The brigantine was sunk in the Mediterranean Sea off the south coast of France by SMU U-38.
 *  Maria Brizzolari ( undefined: World War I: The brigantine was sunk in the Mediterranean Sea off the south coast of France by SMU U-38.
 * SS Quebra ( undefined): The cargo ship struck rocks off the Blasket Islands, County Kerry and sank with the loss of three of her 37 crew.
 *  Tanina ( undefined: World War I: The brigantine was sunk in the Mediterranean Sea off the south coast of France by SMU U-38.

24 August

 *  Alix ( undefined): World War I: The brigantine was scuttled in the Mediterranean Sea off the coast of Algeria (37.85°N, 8.3°W) by SMU U-34 (Germany).
 *  Angelina ( undefined): World War I: The brigantine was scuttled in the Mediterranean Sea 53 nmi north north east of Bône, Algeria (37.8°N, 8.26667°W) by SMU U-34 (Germany).
 * FRENCH SUBMARINE Gustave Zédé : The sank in the Adriatic Sea due to an explosion in her batteries with the loss of four of her 40 crew. She was subsequently refloated, repaired and returned to service.
 * SS Hump ( undefined): The cargo ship collided with SS Argyle ( undefined) in the St. Lawrence River and sank. Her crew were rescued.
 * SS Isdalen (1891) (🇳🇴 Norway): World War I: The cargo ship was sunk in the Mediterranean Sea (42.36667°N, 5.1°W) by SMU U-38 . Her crew survived.
 * SS Liègeoise (🇧🇪 Belgium): World War I: The cargo ship was captured in the Mediterranean Sea (42.2°N, 5.41667°W) by SM U-38 . She was shelled and sunk.

25 August

 * HMS Duke of Albany : World War I: The armed boarding steamer was torpedoed and sunk in the North Sea 20 nmi east of the Pentland Skerries, Orkney Islands (58.73333°N, -2.46667°W) by SMU UB-27 with the loss of 24 crew.
 * Equinox ( undefined): World War I: The trawler struck a mine and sank in the North Sea 39 nmi south east by east of the Humber Lightship ( undefined) with the loss of nine of her crew.
 * SS Leandros (1898) (🇬🇷 Greece): World War I: The cargo ship was sunk in the Mediterranean Sea off Cape Creux (41.86667°N, 4.11667°W) by SMU U-38 . Her crew survived.
 *  Nostra Senora del Carmine ( undefined): World War I: The full-rigged ship was sunk in the Mediterranean Sea 40 nmi off Cape Creux by SMU U-38.
 * SS Socoa (1913) (🇫🇷 France): World War I: The cargo ship was torpedoed and sunk in the Mediterranean Sea 30 nmi north east of Cape Carbon, Algeria (36.96667°N, 5.33333°W) by SMU U-34 (Germany).

26 August

 * SS Atlantico (1891) ( undefined): World War I: The cargo ship was scuttled in the Mediterranean Sea 15 nmi south east of Formentera, Spain by SMU U-38 . Her crew survived.
 * SS Ballooie ( undefined): The cargo ship collided with SS Polzeath ( undefined) in the Seine at Rouen, Seine-Maritime, France and was beached.
 * HMT Rosie : The naval trawler was lost on this date.

27 August

 * HMT Ocean Plough : World War I: The naval trawler struck a naval mine and sank in the North Sea off Lowestoft, Suffolk (52.45°N, 1.875°W) with the loss of five of her crew.
 *  Torridon ( undefined): World War I: The full-rigged ship was sunk in the Mediterranean Sea 30 nmi (38.45°N, 1.93333°W) by SMU U-34 (Germany).

28 August

 *  Gorgona ( undefined): World War I: The barque was sunk in the Mediterranean Sea 20 nmi north east of Cape Palos, Spain (37.83333°N, -0.4°W) by SMU U-34 (Germany).
 *  Saratoga ( undefined): The schooner sprang a leak in the Atlantic Ocean. She was set afire and abandoned by her crew, who were rescued by SS Llangorse ( undefined).

29 August

 * SS Antigoon (1889) (🇧🇪 Belgium): World War I: cargo ship was torpedoed and sunk in the Mediterranean Sea 30 nmi north of Dragonera, Spain by SMU U-38 . Her crew survived.
 *  Fede ( undefined): World War I: The barque was sunk in the Mediterranean Sea off the east coast of Spain (37.41667°N, -0.33333°W) by SMU U-34 (Germany).
 *  François Joseph (🇫🇷 France: World War I: The brigantine was sunk in the Mediterranean Sea off the east coast of Spain by SMU U-38.
 *  Lucia Porter (🇺🇸 United States): The schooner sprang a leak and was abandoned in the Atlantic Ocean (approximately 40°N, -42°W). Her crew were rescued.
 *  Stella del Mare ( undefined): World War I: The full-rigged ship was sunk in the Mediterranean Sea 25 nmi north of Majorca, Spain by SMU U-38 . Her crew survived.
 * USS Memphis (CA-10) : The United States Navy Tennessee-class armored cruiser was wrecked when struck in rapid succession by three large waves of up to 70 feet (21 meters) in height while at anchor in the harbor at Santo Domingo, Dominican Republic, suffering 40 dead and 204 badly injured.

30 August

 * ITALIAN DESTROYER Audace : The destroyer collided with SS Brasile (1907) ( undefined) and sank in the Ionian Sea.
 *  Nostra Signora Della Guardia ( undefined): World War I: The full-rigged ship was sunk in the Mediterranean Sea 30 nmi off Cape San Antonio, Spain by SMU U-38.
 * SS Tongariro (1901) ( undefined): The cargo liner struck the Bull Rock, off Portland Island, New Zealand and sank.
 * SS Wellamo (1898) (🇫🇮 Finland): World War I: The passenger ship was sunk in the Baltic Sea 9 nmi off the Tankar Lighthouse (64.01667°N, 22.61667°W) by SMU U-47 (Germany).

31 August

 * SS Bacchus (1899) (🇫🇷 France): World War I: The cargo ship was sunk in the Mediterranean Sea 20 nmi north of Cape Cherchell, Algeria by SMU U-38.
 * SS Duart (1901) ( undefined): World War I: The cargo ship was shelled and sunk in the Mediterranean Sea 60 nmi north by east of Cape Cherchell (37.65°N, 2.08333°W) by SMU U-38 . Her crew survived.
 *  Nostra Signora Assunta ( undefined): World War I: The barque was sunk in the Mediterranean Sea 30 nmi north east of Cape Palos, Spain (39.15°N, 0.78333°W) by SMU U-34 (Germany).
 * SS Piero Maroncelli (1907) ( undefined): World War I: The cargo ship was sunk in the Mediterranean Sea 55 nmi north west of Cape Caxine, Algeria by SMU U-38.
 *  Quinto ( undefined): World War I: The barque was sunk in the Mediterranean Sea 35 nmi off Cape San Antonio (39.35°N, 0.46667°W) by SMU U-34 (Germany).
 *  Santa Maria ( undefined): World War I: The barque was sunk in the Mediterranean Sea 30 nmi of Cape San Antonio, Spain (39.23333°N, 0.8°W) by SMU U-34 (Germany).
 * SS Tevere (1911) : World War I: The cargo ship was sunk in the Black Sea off Poti, Russia by SMU UB-45.
 * HMT Tuberose : World War I: The naval trawler struck a mine and sank in the North Sea off Lowestoft, Suffolk (52.36667°N, 1.8°W) with the loss of eight of her crew.
 * SS Tunge (🇳🇴 Norway): The cargo ship sprang a leak and sank at Le Havre, Seine-Maritime, France. Her crew were rescued.

Unknown date

 * Anna (🇸🇪 Sweden): World War I: The sailing vessel was torpedoed and sunk in the Baltic Sea by a Kaiserliche Marine submarine. Her crew were rescued by SS Pitea (🇸🇪 Sweden).
 *  Ivanhoe ( undefined): World War I: The Thames barge was sunk in the English Channel by a Kaiserliche Marine submarine.