The death tolls of many sea disasters are widely contested.
See also: Wikipedia.
| Ship(s), Nationality or Ownership | Date | Cause, Location | Deaths |
| * Wilheim Gustloff (German refugee ship) | 30 Jan 1945 | sunk by torpedos from Soviet sub S-13, Baltic NNE of Leba | 6000 to 8000 |
| * Goya (/German Navy troop/refugee ship) | 16-17 Apr 1945 | sunk by torpedos from Soviet sub L-3, Baltic near Hela | 7000 - |
| *? [Chinese army evacuation ship] | Nov 1948 | explosion, off southern Manchuria | 6000 |
| * Junyo Maru (Imperial Japanese Navy prisoner ship) | 18 Sep 1944 | sunk by torpedos from sub HMS Tradewind, off Sumatra | 5620 |
| * Toyama Maru (Imperial Japanese Navy transport) | 29 Jun 1944 | sunk by torpedos from sub USS Sturgeon, bound for Okinawa | 5400 |
| * Cap Arcona (HSA/German Navy refugee ship) | 03 May 1945 | British fighter bombers, Lubeck Bay | 5000 +/- |
| Dona Paz [Philippine] | 20 Dec 1987 | collision with oil tanker Victor, Tablas Strait | 4341 |
| * Lancastria (Cunard/Military troopship) | 17 Jun 1940 | sunk by German bomber, off St. Nazaire | 3500 to 6500 |
| * General von Steuben (German military transport) | 10 Feb 1945 | sunk by torpedos from Soviet sub S-13, off Stolpe Bank, Baltic | 3500 |
| * Provence (French Navy auxil' cruiser) | 26 Feb 1916 | sunk by torpedos from German sub U-35, off Kithira Island, Greece | 3100 |
| * Thielbek (German refugee ship) | 03 May 1945 | British fighter bombers, Lubeck Bay | 2800 +/- |
| * Neptunia (Italian military transport) | 18 Sep 1941 | sunk by torpedos from sub HMS Upholder, off Tripoli | 2500 |
| * Oceania (Italian military transport) | 18 Sep 1941 | sunk by torpedos from sub HMS Upholder, off Tripoli | 2500 |
| * Yamato (Imperial Japanese Navy battleship) | 07 Apr 1945 | American attack, SW of Kagoshima | 2498 |
| * Bismark (German Navy) | 27 May 1941 | British air and warship attack | 2200 |
| * Sinfra (German prisoner transport) | 19 Oct 1943 | sunk by aircraft attack, north of Crete | 2098 |
| * Ural Maru (Japanese transport) | 27 Sep 1944 | sunk by torpedos from sub USS Flasher, 240 km west of Masinlik, Philippines | 2000 |
| * Scharnhorst (German Navy) | 26 Dec 1943 | sunk by British naval attack, off North Cape of Norway | 1964 |
| * Rigel (German prisoner transport) | 27 Nov 1944 | sunk by aircraft from HMS Implacable, north of Namsos | 1833 |
| * Arisan Maru (Japanese prisoner ship) | 24 Oct 1944 | sunk by torpedos from sub USS Snook, South China Sea | 1792 |
| * Taiho (Imperial Japanese Navy aircraft carrier) | 19 Jun 1944 | burned and foundered after torpedoed by USS Albacore, west of Guam | 1650 |
| Mont Blanc [French], Imo [Belgian] | 06 Dec 1917 | collision and explosion, Halifax harbour | 1600 (two ships and land deaths) |
| Titanic (WSL) | 15-16 Apr 1912 | sank after collision with iceberg, North Atlantic | 1523 |
| Sultana [American] | 27 Apr 1865 | boiler explosion on the Mississippi | 1450 (up to 1900) |
| * HMS Hood (RN) | 21 May 1941 | German warships, North Atlantic | 1338 |
| * Lusitania (Cunard) | 07 May 1915 | German sub torpedo | 1198 |
| * USS Arizona [USN] | 07 Dec 1941 | bombed and sunk by Japanese aircraft, Pearl Harbor | 1177 |
| Toya Maru [Japanese] | 26 Sep 1954 | sank in Tsugaru Strait, Japan | 1172 |
| * Kiangya [Chinese] | 03 Dec 1948 | explosion (probably mine), south of Shanghai | 1100 + |
| Estonia [Estonian] | 28 Sep 1994 | swamped through bow door and sank, Baltic Sea | 1049 |
| General Slocum [American] | 15 Jun 1904 | burned, East River, New York City | 1030 |
| * HMS Invincible (RN) | June 1916 | Battle of Jutland against German Navy | 1026 |
| Empress of Ireland (CP) | 29 May 1914 | collision in fog with collier Storstad, St. Lawrence River | 1014 |
| * Bretagne (French Navy) | July 1940 | British attack, Oran, Algeria | 1012 |
| Kichemaru [Japanese] | 28 Sep 1912 | sank off Japan | 1000 |
| Hsin Yu [Chinese] | 29 Aug 1916 | sank off China | 1000 |
| Hong Kong | 18 Mar 1921 | wrecked in South China Sea | 1000 |
| * Tirpitz [German Navy] | 12 Nov 1944 | bombed and sunk by British forces, 69º 36' north, 18º 59' east | 971 |
| Eastland [American] | 24 Jul 1915 | rolled over, Chicago River | 844 |
| * HMS Royal Oak (RN) | 13 Oct 1939 | German U-boat torpedos, Scapa Flow | 833 |
| * Leopold (Belgian troopship) | 24 Dec 1944 | German sub torpedo | 802 |
| Princess Alice [British] | 03 Sep 1878 | collision on Thames River (Engl) | 700 |
| * Dorchester (allied troopship) | 03 Feb 1943 | German sub torpedo | 673 |
| Norge [Danish] | 28 Jun 1904 | wrecked on Rockall Island | 620 |
| Atlantic (WSL) | 30 Mar 1873 | struck a rock off Nova Scotia | 585 |
| Tamponas II [Indonesian] | 27 Jan 1981 | fire, Java Sea | 580 |
| Utopia [British] | 17 Mar 1891 | collision with HMS Anson off Gibralter | 562 |
| Principe de Asturias [Spanish] | 03 Mar 1916 | wrecked near Santos, Brazil | 558 |
| La Bourgogne [French] | 04 Jul 1898 | collision with British sailing ship Cromartyshire off Nova Scotia | 549 |
| Ertogrul [Turkish] | 19 Sep 1890 | foundered off Japan | 540 |
| * HMS Courageous (RN) | 17 Sep 1939 | German U-boat torpedos, southwest of Ireland | 515 |
| Grandcamp [French] | 16 Apr 1947 | explosion and fire, Texas City TX | 510 |
| Neptune [Haitian] | 17 Feb 1993 | capsized off Port-au-Prince, Haiti | 500 + |
| Bukoba | 21 May 1996 | sank, Lake Victoria, Africa | 500 |
| Kawachi (Imperial Japanese Navy) | 12 Jul 1918 | explosion, Tokayama Bay | 500 |
| Kiang-Kwan [Chinese] | 25 Apr 1918 | collision off Hankow | 500 |
| Principe de Asturias [Spanish] | 05 Mar 1912 | wrecked off Spain | 500 |
| Valbanera [Spanish] | 09 Sep 1919 | lost off Florida | 500 |
| City of Glasgow [British] | Mar 1854 | Missing in North Atlantic | 480 |
| Austria [German] | 23 Sep 1858 | fire, North Atlantic | 471 |
| Mary Rose (RN) | 19 Jul 1545 | rolled over and sank during battle, the Solent | 470 +/- |
| Salem Express | 14 Dec 1991 | rammed coral reef near Safaga, Egypt | 462 |
| Chaonia [French] | 17 Jan 1919 | lost in straits of Messina | 460 |
| HMS Birkenhead (RN) | 26 Feb 1862 | foundered on a rock | 445 |
| [Indian ferry] | 06 Aug 1988 | capsized on Ganges River | 400 + |
| Duburg [British] | 17 Feb 1890 | wrecked, China Sea | 400 |
| Reina Regenta [Spanish] | 11 Mar 1895 | foundered near Gibralter | 400 |
| Wah Yeung [British] | 15 Nov 1887 | burned at sea | 400 |
| Princess Sophia [Canadian] | 25 Oct 1918 | sank off Alaska | 398 |
| Admiral Nakhimov [Soviet], Pyotr Vasev [Soviet] | 31 Aug 1986 | collision, Black Sea | 398 |
| Himera [Greek] | 19 Jan 1947 | struck mine off Athens | 392 |
| Cimbria [German] | 19 Jan 1883 | collision with British steamer Sultan, North Sea | 389 |
| * General Belgrano (Argentine Navy) | 26 Apr 1982 | British sub torpedo, South Atlantic | 368 |
| Tenth of Ramadan [Egyptian] | 25 May 1983 | fire, Lake Nasser | 357 |
| Sirio [Italian] | 04 Aug 1906 | wrecked of Cape Palos, Spain | 350 |
| HMS Curacao (RN) | 02 Oct 1942 | run over by Queen Mary, Irish Sea | 338 |
| Elbe [German] | 30 Jan 1895 | collision with British steamer Craithie, North Sea | 332 |
| * HMS Prince of Wales [Royal Navy] | 10 Dec 1941 | bombed and sunk by Japanese forces, east coast of Malaya | 327 |
| Principessa Mafalda [Italian] | 25 Oct 1927 | explosion, off Porto Seguro, Brazil | 314 |
| Schiller [German] | 07 May 1875 | wrecked off Scilly Isles | 312 |
| Namyong-Ho [South Korean] | 15 Dec 1970 | sank, Korean Strait | 308 |
| Matsu Maru [Japanese] | 23 Mar 1908 | collision near Hakodate | 300 |
| Niitaka (Imperial Japanese Navy) | 26 Aug 1922 | sank in storm off Kamchatka | 300 |
| Northfleet [British] | 22 Jan 1873 | foundered off Dungeness, Engl | 300 |
| Waratah [British] | 01 Aug 1909 | missing enroute from Durban, South Africa, to Sydney, Australia | 300 |
| Arctic (Collins Line) | 27 Sep 1854 | collision with French steamer Vesta near Cape Race | 285 to 351 |
| Liberte (French Navy) | 25 Sep 1911 | explosion at Toulon | 285 |
| West Sea Ferry | 10 Oct 1993 | capsized in storm, Yellow Sea near Western South Korea | 285 |
| [Nigerian passenger boat] | 04 Apr 1998 | capsized off Ibaka Beach, Nigeria | 280 |
| Eshghabad [Soviet] | 14 Jul 1957 | ran aground, Caspian Sea | 270 |
| [Bangladeshi ferry] | 20 Apr 1986 | sank near Barisal, Bangladesh | 262 |
| USS Maine (USN) | 15 Feb 1898 | explosion, Havana harbour | 260 |
| Save [Portugese] | 08 Jul 1961 | ran aground off Mozambique | 259 |
| [Bangladeshi motor launch] | 01 May 1974 | capsized off Bangladesh | 250 |
| Anglo-Saxon [British] | 27 Apr 1863 | wrecked at Cape Race | 238 |
| Pacific [American] | 04 Nov 1875 | collision off Cape Flattery | 236 |
| Dara [British] | 08 Apr 1962 | explosion, Persian Gulf | 236 |
| Ville du Harve [French] | 23 Nov 1873 | collision with British sailing ship Loch Earn | 226 |
| Byzantin [French] | 18 Dec 1878 | collision, Dardanelles | 210 |
| USS Truxtun (USN), USS Pollux (USN) | 18 Feb 1942 | ran aground, off Nfld | 204 (two ships) |
| [destroyer] (Soviet Navy) | 26 Sep 1974 | sank, Black Sea | 200 + |
| Pride of la Gonave [Haitian] | 08 Sep 1997 | sank off Montrouis, Haiti | 200 + |
| [Congolese passenger boat], [Congolese passenger boat] | 02 Sep 1998 | capsized on Lake Kivu, near Bukavu | 200 + (two boats) |
| Stonewall [American] | 27 Oct 1869 | fire, on Mississippi south of Cairo IL | 200 |
| Victoria [Canadian] | 24 May 1881 | capsized on Thames (Ontario) | 200 |
| General Chanzy [French] | 09 Feb 1910 | wrecked off Minorca | 200 |
| Cambria [British] | 19 Oct 1870 | wrecked off Northern Ireland | 196 |
| Herald of Free Enterprise [British ferry] | 06 Mar 1987 | capsized off Zeebrugge, Belgium | 189 |
| Pacific (Collins Line) | 23 Jan 1856 | Missing in North Atlantic | 186 to 286 |
| City of Boston (Inman) | 25 Jan 1870 | Missing North Atlantic | 177 |
| USS Hobson (USN), USS Wasp (USN) | 26 Apr 1952 | collision, Atlantic | 176 |
| [Tamil refugee boat] | 20 Feb 1997 | sank off Sri Lanka | 165 |
| [Romanian pleasure boat], [Bulgarian barge] | 10 Sep 1989 | collision on Danube | 161 |
| Portland [American] | 26 Nov 1898 | wrecked off Cape Cod | 157 |
| [auto ferry], [oil tanker] | 10 Apr 1991 | collision outside Livorno harbour, Italy | 140 |
| USS Forrestal (USN) | 29 Jul 1967 | fire, off North Vietnam | 134 |
| Morro Castle [American] | 08 Sep 1934 | fire off Asbury Park, NJ | 134 |
| * Simon Bolivar [Dutch liner] | 18 Nov 1939 | struck mine, near Harwich, England | 130 |
| Noronic [Canadian] | 17 Sep 1949 | burned, Toronto harbour | 130 |
| USS Thresher (USN submarine) | 10 Apr 1963 | sank after electrical failure, North Atlantic | 129 |
| * HMCS Athabaskan (RCN) | 29 Apr 1944 | sunk by German U-Boat torpedo, north of Île de Bas | 129 |
| Lakonia [Greek cruise ship] | 28 Dec 1962 | sunk after fire on board, of Madeira | 128 |
| Kursk (Russian Navy submarine) | 12 Aug 2000 | sunk by internal explosion or collision, Barents Sea | 118 |
| Vestris [British] | 12 Nov 1928 | sank off Virginia | 113 |
| * Athenia (A-DL [British]) | 03 Sep 1939 | German U-boat torpedos, south of Rockall | 112 |
| Pennington [American] | 26 May 1954 | sank off Rhode Island | 103 |
| Patria [Egyptian] | 25 Dec 1976 | fire, Red Sea | 100 |
| USS Scorpion (USN submarine) | 22 May 1968 | sank possibly after explosion, off Azores | 99 |
| HMS Thetis (RN) | 01 Jun 1939 | sank, Liverpool Bay | 99 |
| [Philippine passenger ferry] | 18 Sep 1998 | sank south of Manila | 97 |
| Yarmouth Castle [Panamanian] | 13 Nov 1965 | fire off Bahamas | 89 |
| [Albanian refugee boat] | 28 Mar 1997 | rammed by Italian Navy warship Sibilla | 83 |
| HMAS Voyager (RAN) | 10 Feb 1964 | collison with HMAS Melbourne, off NSW | 82 |
| George Prince [American], Frosta [Norwegian] | 20 Oct 1976 | collision on Mississippi at Luling LA | 77 |
| Express Samina [Greek ferry] | 26 Sep 2000 | struck rock and sank, off Paros, Aegean | 77 |
| USS Evans (USN) | 02 Jun 1969 | run over by HMAS Melbourne | 74 |
| Dakar (Israeli Navy) | 25 Jan 1968 | vanished, Mediterranean | 69 |
| Eurydice (French Navy) | 04 Mar 1970 | sank, near Toulon | 57 |
| Bowbelle [British], Marchioness [British] | 20 Aug 1989 | collision, Thames River | 56 |
| K-8 (Soviet Navy submarine) | 10-11 Apr 1970 | sank after onboard fires, Bay of Biscay off Spain | 52 |
| Andrea Doria (Italian Line) | 26 Jul 1956 | rammed by liner Stockholm and sank, Long Island Sound | 51 |
| USS Constellation (USN) | 19 Dec 1960 | caught fire, Brooklyn Naval Yard | 49 |
| * Laurentic (WSL/armed cruiser) | 03 Nov 1940 | sunk by torpedos from German sub U-99 | 49 |
| USS Mississippi (USN) | 12 Jun 1924 | gun turret explosions, off San Pedro | 48 |
| * Transylvania (Anchor Line/troopship) | 10 Aug 1940 | sunk by torpedo from German sub | 48 |
| USS Iowa (USN) | 19 Apr 1989 | gun turret explosion | 47 |
| * California (Anchor Line/military troopship) | 11 Jul 1943 | sunk by German aircraft, off Portugal | 46 |
| * Empress of Britain (CP/troopship) | 26 & 28 Oct 1940 | German bomber attack (26th), German U-boat torpedos (28th), northwest of Ireland | 45 (both incidents) |
| K-278 Komsomolets (Soviet Navy submarine) | 07 Apr 1989 | sank after onboard fire, 180 km south of Bear Island | 41 |
| K-3 (Soviet Navy submarine) | 08 Sep 1967 | onboard fire and CO2 release, Norwegian Sea | 39 |
| Marine Electric [American] | 12 Feb 1963 | sank in storm, off Chincoteague, VA | 33 |
| * Britannic (WSL/Military hospital service) | 12 Nov 1916 | struck mine and sank, Aegean Sea | 30 |
| Edmund Fitzgerald [American] | 10 Nov 1975 | sank during storm, Lake Superior | 29 |
| K-19 (Soviet Navy submarine) | 24 Feb 1972 | onboard fire, North Atlantic | 28 |
| USS Squalus (USN) | 23 May 1939 | sank off Portsmouth, NH | 26 |
| * HMS Sheffield (RN destroyer) | 04 May 1982 | Argentine air-to-ground exocet missile, South Atlantic | 20 |
| USS Nimitz (USN) | 26 May 1981 | combat jet crashed on deck | 14 |
| * Franconia (Cunard/troopship) | 04 Oct 1916 | sunk by German sub torpedos, off Malta | 12 |
| * Duchess of York (CP/British troopship) | 12 Jan 1943 | sunk by aerial bombardment, off Portugal | 11 |
| Republic (WSL) | 1909 | rammed by Italian steamer Florida off New Jersey | 6 |
| * Carpathia (Cunard/military troopship) | 18 Jul 1918 | sunk by torpedos from German sub, west of Fastnet | 5 |
| * Duchess of Atholl (CP/British troopship) | 10 Oct 1942 | sunk by torpedos from German sub, South Atlantic | 4 |