The List of ships of the Second World War contains major military vessels of the war, arranged alphabetically and by type. The list includes armed vessels that served during the war and in the immediate aftermath, inclusive of localized ongoing combat operations, garrison surrenders, post-surrender occupation, colony re-occupation, troop and prisoner repatriation, to the end of 1945. For smaller vessels, see also list of World War II ships of less than 1000 tons. Some uncompleted Axis ships are included, out of historic interest. Ships are designated to the country under which they operated for the longest period of the Second World War, regardless of where they were built or previous service history. Submarines show submerged displacement.

Click on headers to sort column alphabetically.

+ List of ships of World War II (O) Ship Country or organization Class Type Displacement (tons) First commissioned FateSimsdestroyer1,5702 March 1940sunk 19 October 1942Oak HillAshlandDock landing ship7,93029 January 1944Transferred to Taiwan, November 1960 light cruiser6,00017 July 1943decommissioned 1949, scrapped 1959Huntdestroyer1,0507 May 1942Flowercorvette92518 November 1941paid off 20 July 1945Ominelayer destroyer1,5403 September 1942paid off 1948, scrapped 1965Ominelayer destroyer1,54030 October 1942paid off 1957, scrapped 1962Odinsubmarine1,92224 August 1927paid off 5 July 1944Colossusaircraft carrier13,2008 August 1945scrapped May 1962OcéanCourbetaccommodation ship23,4755 June 1913captured Germany 27 November 1942, sunk 1944, scrapped 14 December 1945OceanwayCasa GrandeDock landing ship7,93029 March 1944Transferred to Greece March 1947Odinsubmarine2,03821 December 1929Sunk 14 June 1940Odestroyer1,54020 September 1941scrapped 1959 light cruiser5,10010 October 1921sunk by 19 July 1944minelayer4,29030 September 1936sunk 12 May 1942Nevadabattleship29,0002 May 1916sunk 7 December 1941; raised and sunk under tow 1947 light cruiser11,80022 December 1944converted to missile cruiser 1960, sunk as target 1999Oktyabrskaya RevolutsiyaGangutbattleship23,0003 June 1909scrapped 1959Oldenburgminelayer1,14113 September 1943former water tanker Garigiliano captured from ItalyOdinsubmarine2,03814 June 1930sunk 8 May 1942light cruiser7,05024 February 1923Scrapped February 1946escort carrier7,80011 February 1944scuttled 4 January 1945Odestroyer1,54019 June 1942scrapped 1977Odestroyer1,5408 October 1941paid off April 1947light cruiser8,800July 1944laid up 15 October 1958Ominelayer destroyer1,54014 August 1942paid off 1954, scrapped 1955Flowercorvette92529 November 194021 August 1944Bensondestroyer1,62013 February 1943decommissioned 1947, scrapped 1973Flowercorvette92525 November 1940paid off 2 July 1945Serranodestroyer1,090Odestroyer1,5405 July 1941paid off 1 January 1946 light cruiser7,00018 January 1934scrapped 1949auxiliary cruiser15,7009 December 1939 sunk 4 May 1945Riverfrigate1,44518 April 1944paid off 22 January 1946Odinsubmarine2,03823 September 1930Sunk 19 June 1940Ominelayer destroyer1,54017 October 1942submarine1,1002 February 1939sunk 11 June 1940Oscar IIcoastal defence shippaid off 1950, scrapped 1974Odinsubmarine2,03825 January 1929paid off 7 March 1945Odinsubmarine2,0381 May 1929Sunk 1 August 1940Cdestroyer1,37515 June 1938sunk 14 September 1942 by Odinsubmarine2,0385 July 1929paid off March 1946Odinsubmarine1,92215 June 1927paid off 1945Bourrasquedestroyer1,31919 January 1927to Poland 17 July 1940, to Free French 30 April 1941, scrapped 7 April 1949Riverfrigate1,44527 November 1943paid off 7 June 1965Flower modifiedcorvette1,01517 November 194319 July 1945Odinsubmarine1,9221 April 1927sunk by friendly fire 10 September 1939Flowercorvette92528 December 1941 light cruiser11,43328 February 1943sunk 25 July 1945

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