List of shipwrecks in 1904

The list of shipwrecks in 1904 includes all ships sunk, foundered, grounded, or otherwise lost during 1904.

9 January

 *  Clallam (🇨🇦 Canada): The Puget Sound Navigation Company passenger ship foundered after defective maintenance in the Strait of Juan de Fuca. At least 56 lives were lost.

9 February

 * SS Dora Retzlaff ( German Empire): The cargo ship, owned by Reederei Emil R. Retzlaff., foundered 66 nmi north east of Cape Vilano.

12 February

 * Boyarin ( Russian Empire): The Imperial Russian Navy Light cruiser struck two mines and sank during the Russo-Japanese War at Port Arthur, Manchuria.

4 March

 * SS Handel (🇧🇪 Belgium): The Handelsvereniging cargo ship foundered in the North Sea, off Ramsgate, England. All crew were rescued.

18 March

 * HMS A1 ( undefined): The Royal Navy was accidentally rammed by SS Berwick Castle and sunk with the loss of all 11 crew in The Solent. She was later raised, repaired and returned to service.

31 March

 * RUSSIAN BATTLESHIP Petropavlovsk ( Russian Empire): The Imperial Russian Navy struck a mine and sank in the Russo-Japanese War at Port Arthur Manchuria. 638 crew were killed.

14 April

 * SS Baron Lambermont (🇧🇪 Belgium): The SA Tonnage, Antwerp Cargo ship struck rocks and sank at Cape Blanc, Bizerte, Tunisia.

14 May

 * JAPANESE CRUISER Miyako ( Empire of Japan): The Imperial Japanese Navy unprotected cruiser struck a mine and sank in the Russo-Japanese War at Port Arthur, Manchuria.

15 May

 * Yoshino ( Empire of Japan): The Imperial Japanese Navy Protected cruiser was accidentally rammed by the armoured cruiser JAPANESE CRUISER Kasuga in fog during the Russo-Japanese War in the Yellow Sea. 319 sailors were lost.

18 May

 * JAPANESE GUNBOAT Ōshima ( Empire of Japan): The Imperial Japanese Navy Gunboat collided with JAPANESE GUNBOAT Akagi and sank in the Russo-Japanese War at Port Arthur Manchuria (39.01667°N, 121.13333°W).

15 June

 * PS General Slocum (🇺🇸 United States): The Knickerbocker Steamship Company paddle steamer caught fire and burned out on Long Island Sound, New York. 1,021 lives were lost.

28 June

 * SS Norge (🇩🇰 Denmark): The Dampskibs-selskabet Thingvalla A/S ocean liner ran aground, then sank on Hasselwood Rock, Atlantic Ocean. 635 lives were lost.
 *  Monohansett (🇺🇸 United States): The Paddle steamer ran aground at Little Misery Island, Massachusetts.

July

 *  Rio Douro (🇳🇴 Norway): The barque, owned by B Berg, was stranded. She was refloated in 1905 and scrapped.

5 July

 * JAPANESE CORVETTE Kaimon ( Empire of Japan): The Corvette struck a mine and sank in the Russo-Japanese War at Port Arthur, Manchuria (38.83333°N, 121.83333°W). 23 crew were lost.

4 August

 * SS Sirio (🇮🇹 Italy): The Societa Italiana di Transporti Maritimi Raggio & Co passenger ship went aground and wrecked at the Hormigas Islands, Spanish Mediterranean.

8 August

 * SS Ganda (1874) (🇧🇪 Belgium): The T Nolson & Co. 474 ton cargo ship was wrecked at Hell's Mouth, Llŷn Peninsula, North Wales. Ganda broke from her moorings, and one of her ropes tangled around her propeller, as her captain tried to get his ship away from the jetty. She drifted helplessly onto the rocky shore.

13 August

 * Decoy ( undefined): The Daring-class torpedo boat destroyer was in collision with HMS Arun (1903) off the Isles of Scilly. 1 crew member was lost.

1 September

 *  Corunna ( undefined): The barque ran aground at Miramar, Buenos Aires Province, Argentina. She was refloated on 12 October 1904.

26 September

 * HMS Chamois (1896) ( undefined): The lost a propeller blade at speed. The blade pierced the hull and the ship foundered in the Gulf of Patras.

30 September

 * Adolphe (🇫🇷 France): The barquentine was driven into the wreck of Colonist and sank at Newcastle, New South Wales, Australia. All 32 crew were rescued.

8 October

 * SS Cameroon (1874) ( undefined): The Elder Dempster 1,862 grt cargo / passenger ship was beached and holed in Liberia in 1904.

16 October

 * Georges Valentine (🇮🇹 Italy): The barque sank in a storm off Hutchinson Island, Florida, United States (27.19883°N, -80.16383°W).

6 November

 * JAPANESE GUNBOAT Atago ( Empire of Japan): The ran aground during the Russo-Japanese War at Port Arthur, Manchuria.

30 November

 * JAPANESE CRUISER Saien ( Empire of Japan): The Imperial Japanese Navy Protected cruiser struck a mine and sank in the Russo-Japanese War at Port Arthur, Manchuria (38.85°N, 121.08333°W).

10 December

 * SS Antverpia (🇧🇪 Belgium): The G Albrecht cargo ship ran aground on the River Scheldt. She was refloated in 1905 and scrapped in Antwerp.

13 December

 * JAPANESE CRUISER Takasago ( Empire of Japan): The Imperial Japanese Navy Protected cruiser struck a mine and sank during the Russo-Japanese War at Port Arthur, Manchuria (38.16667°N, 121.25°W). 273 crew were killed.