All Ships of World War II
| Name | Class | Country | Year of Launch |
| A (Planned) | No Classification | Germany | |
| A (Planned) | No Classification | Germany | |
| ABSD-1 | No Classification | United States | |
| ABSD-2 | No Classification | United States | |
| Abukuma | Nagara-class Light Cruiser | Japan | 1923 |
| Acasta | A and B-class Destroyer | United Kingdom | 1929 |
| Acavus | Rapana-class Merchant Vessel | United Kingdom | |
| Acciaio | Acciaio-class Submarine | Italy | |
| Activity | Activity-class Escort Carrier | United Kingdom | 1942 |
| Adelaide | Town-class Light Cruiser | Australia | 1918 |
| Admiral Graf Spee | Deutschland-class Heavy Cruiser | Germany | 1934 |
| Admiral Hipper | Admiral Hipper-class Heavy Cruiser | Germany | 1937 |
| Admiral Scheer | Deutschland-class Heavy Cruiser | Germany | 1933 |
| Adolf Lüderitz | Carl Peters-class Tender | Germany | 1939 |
| Adula | Rapana-class Merchant Vessel | United Kingdom | |
| Agano | Agano-class Light Cruiser | Japan | 1941 |
| Akagi | Akagi-class Aircraft Carrier | Japan | 1925 |
| Akashi | Akashi-class Repair Ship | Japan | 1938 |
| Alabama | South Dakota-class Battleship | United States | 1942 |
| Alabastro | Acciaio-class Submarine | Italy | |
| Alaska | Alaska-class Large Cruiser | United States | 1943 |
| Albacore | Gato-class Submarine | United States | 1942 |
| Albatros | 1923-class Motor Torpedo Boat | Germany | 1926 |
| Albatross | No Classification | United Kingdom | |
| Albert Leo Schlageter | Gorch Fock-class Barque | Germany | 1937 |
| Albert W. Grant | Fletcher-class Destroyer | United States | 1943 |
| Alessandro Malaspina | Marconi-class Submarine | Italy | 1940 |
| Alfredo Oriani | Oriani-class Destroyer | Italy | |
| Algérie | Algérie-class Heavy Cruiser | France | 1932 |
| Alpino | Soldati-class Destroyer | Italy | |
| Alpino Bagnolini | Liuzzi-class Submarine | Italy | 1939 |
| Altmark | Dithmarschen-class Auxiliary | Germany | 1937 |
| Amagi | Unryu-class Aircraft Carrier | Japan | 1943 |
| Amagiri | Fubuki-class Destroyer | Japan | 1930 |
| Amberjack | Gato-class Submarine | United States | |
| Ambra | Perla-class Submarine | Italy | |
| Ameer | Ruler-class Escort Carrier | United Kingdom | 1942 |
| Ancon | No Classification | United States | 1938 |
| Ancylus | Rapana-class Merchant Vessel | United Kingdom | 1935 |
| Angler | Gato-class Submarine | United States | |
| Anson | King George V (1939)-class Battleship | United Kingdom | |
| Anticosti | Isles-class Trawler | Canada | 1942 |
| Antoine Saugrain | Liberty-class Merchant Vessel | United States | 1943 |
| Anzio | Casablanca-class Escort Carrier | United States | 1943 |
| Aoba | Furutaka-class Heavy Cruiser | Japan | 1926 |
| Apogon | Balao-class Submarine | United States | 1943 |
| Arashio | Asashio-class Destroyer | Japan | |
| Arbiter | Ruler-class Escort Carrier | United Kingdom | 1943 |
| Archer | Archer-class Escort Carrier | United Kingdom | |
| Archerfish | Balao-class Submarine | United States | 1943 |
| Argento | Acciaio-class Submarine | Italy | |
| Argonaut (Argonaut-class) | Argonaut-class Submarine | United States | |
| Argonaut (Tench-class) | Tench-class Submarine | United States | |
| Argus | Argus-class Aircraft Carrier | United Kingdom | 1917 |
| Arisan Maru | No Classification | Japan | |
| Arizona | Pennsylvania-class Battleship | United States | 1915 |
| Ark Royal | Ark Royal-class Aircraft Carrier | United Kingdom | 1937 |
| Armidale | Bathurst-class Corvette | Australia | 1942 |
| Artigliere | Soldati-class Destroyer | Italy | |
| Asagumo | Asashio-class Destroyer | Japan | |
| Asama Maru | No Classification | Japan | 1928 |
| Ascari | Soldati-class Destroyer | Italy | 1938 |
| Ashigara | Myoko-class Heavy Cruiser | Japan | 1928 |
| Aspro | Balao-class Submarine | United States | |
| Asteria | Acciaio-class Submarine | Italy | |
| Astoria (Cleveland-class) | Cleveland-class Light Cruiser | United States | |
| Astoria (New Orleans-class) | New Orleans-class Heavy Cruiser | United States | 1933 |
| Atago | Takao-class Heavy Cruiser | Japan | 1930 |
| Atlanta | Atlanta-class Light Cruiser | United States | 1941 |
| Atlantis | No Classification | Germany | 1937 |
| Atule | Balao-class Submarine | United States | |
| Augusta | Northampton-class Heavy Cruiser | United States | 1930 |
| Austin | Evarts-class Destroyer Escort | United States | 1942 |
| Australia | County-class Heavy Cruiser | Australia | 1927 |
| Aviere | Soldati-class Destroyer | Italy | 1937 |
| Avorio | Acciaio-class Submarine | Italy | |
| Awa Maru | No Classification | Japan | 1942 |
| B (Planned) | Graf Zeppelin-class Aircraft Carrier | Germany | 1940 (Projected, not actual) |
| B (Planned) | No Classification | Germany | |
| Błyskawica | Grom-class Destroyer | Poland | 1936 |
| Bailey | Benson-class Destroyer | United States | 1941 |
| Balao | Balao-class Submarine | United States | |
| Baltimore | Baltimore-class Heavy Cruiser | United States | 1942 |
| Bang | Balao-class Submarine | United States | |
| Barb | Gato-class Submarine | United States | |
| Barbarigo | Marcello-class Submarine | Italy | |
| Barbel | Balao-class Submarine | United States | |
| Barbero | Balao-class Submarine | United States | 1943 |
| Barham | Queen Elizabeth-class Battleship | United Kingdom | 1914 |
| Bashaw | Gato-class Submarine | United States | |
| Bataan (Independence-class) | Independence-class Light Carrier | United States | 1943 |
| Bataan (Tribal-class) | Tribal-class Destroyer | Australia | 1944 |
| Batfish | Balao-class Submarine | United States | |
| Baya | Balao-class Submarine | United States | 1944 |
| Béarn | Béarn-class Aircraft Carrier | France | |
| Becuna | Balao-class Submarine | United States | 1944 |
| Belfast | Town-class Light Cruiser | United Kingdom | 1938 |
| Bell | Fletcher-class Destroyer | United States | 1942 |
| Belleau Wood | Independence-class Light Carrier | United States | 1942 |
| Bennington | Essex-class Aircraft Carrier | United States | 1944 |
| Bergall | Balao-class Submarine | United States | 1944 |
| Berillo | Perla-class Submarine | Italy | |
| Bersagliere | Soldati-class Destroyer | Italy | 1938 |
| Besugo | Balao-class Submarine | United States | |
| Billfish | Balao-class Submarine | United States | |
| Birmingham | Town-class Light Cruiser | United Kingdom | 1936 |
| Biscayne | Barnegat-class Seaplane Tender | United States | 1941 |
| Bismarck | Bismarck-class Battleship | Germany | 1939 |
| Blackfin | Balao-class Submarine | United States | 1944 |
| Blackfish | Gato-class Submarine | United States | |
| Blenny | Balao-class Submarine | United States | 1944 |
| Blower | Balao-class Submarine | United States | |
| Blueback | Balao-class Submarine | United States | |
| Bluefish | Gato-class Submarine | United States | 1943 |
| Bluegill | Gato-class Submarine | United States | |
| Blücher | Admiral Hipper-class Heavy Cruiser | Germany | 1937 |
| Boarfish | Balao-class Submarine | United States | 1944 |
| Bogue | Bogue-class Escort Carrier | United States | 1941 |
| Boise | Brooklyn-class Light Cruiser | United States | |
| Bolzano | Trento-class Heavy Cruiser | Italy | 1932 |
| Bombardiere | Soldati-class Destroyer | Italy | |
| Bon Homme Richard | Essex-class Aircraft Carrier | United States | |
| Bonefish | Gato-class Submarine | United States | |
| Boston | Baltimore-class Heavy Cruiser | United States | |
| Bowfin | Balao-class Submarine | United States | 1942 |
| Bream | Gato-class Submarine | United States | |
| Bremse | No Classification | Germany | 1932 |
| Bretagne | Bretagne-class Battleship | France | 1913 |
| Brill | Balao-class Submarine | United States | 1944 |
| Bronzo | Acciaio-class Submarine | Italy | |
| Brummer | No Classification | Germany | 1935 |
| Bugara | Balao-class Submarine | United States | 1944 |
| Bullhead | Balao-class Submarine | United States | |
| Bumper | Balao-class Submarine | United States | |
| Bunker Hill | Essex-class Aircraft Carrier | United States | 1942 |
| Burrfish | Balao-class Submarine | United States | |
| Burza | Wicher-class Destroyer | Poland | 1929 |
| Bussard | No Classification | Germany | |
| C (Planned) | Graf Zeppelin-class Aircraft Carrier | Germany | 1945 (Projected, not actual) |
| C (Planned) | No Classification | Germany | |
| Cabezon | Balao-class Submarine | United States | |
| Cabot | Independence-class Light Carrier | United States | 1943 |
| Cabrilla | Balao-class Submarine | United States | 1942 |
| Cachalot (Cachalot-class) | Cachalot-class Submarine | United States | 1933 |
| Cachalot (Grampus-class) | Grampus-class Minelaying Submarine | United Kingdom | 1937 |
| Caiman | Balao-class Submarine | United States | 1944 |
| California | Tennessee-class Battleship | United States | |
| Camicia Nera | Soldati-class Destroyer | Italy | 1937 |
| Canberra (Baltimore-class) | Baltimore-class Heavy Cruiser | United States | 1943 |
| Canberra (County-class) | County-class Heavy Cruiser | Australia | |
| Canfield | Evarts-class Destroyer Escort | United States | 1943 |
| Canopus | No Classification | United States | |
| Capelin | Balao-class Submarine | United States | |
| Capitaine | Balao-class Submarine | United States | 1944 |
| Capitano Tarantini | Liuzzi-class Submarine | Italy | 1940 |
| Carabiniere | Soldati-class Destroyer | Italy | 1938 |
| Carbonero | Balao-class Submarine | United States | 1944 |
| Card | Bogue-class Escort Carrier | United States | 1942 |
| Carl Peters | Carl Peters-class Tender | Germany | 1939 |
| Carl Zeiss | No Classification | Germany | 1938 |
| Carp | Balao-class Submarine | United States | |
| Casabianca | Redoubtable-class Submarine | France | 1935 |
| Casablanca | Casablanca-class Escort Carrier | United States | 1943 |
| Cassin Young | Fletcher-class Destroyer | United States | 1943 |
| Cavalla | Gato-class Submarine | United States | |
| Centurion | King George V (1911)-class Battleship | United Kingdom | 1911 |
| Cero | Gato-class Submarine | United States | 1943 |
| Chariot-class Summary Information | Chariot-class Midget Submarine | United Kingdom | |
| Charles J. Badger | Fletcher-class Destroyer | United States | 1943 |
| Charr | Balao-class Submarine | United States | 1944 |
| Chester | Northampton-class Heavy Cruiser | United States | 1929 |
| Chicago | Northampton-class Heavy Cruiser | United States | 1930 |
| Chikuma | Tone-class Heavy Cruiser | Japan | 1938 |
| Chitose | Chitose-class Light Carrier | Japan | 1936 |
| Chiyoda | Chitose-class Light Carrier | Japan | 1936 |
| Chokai | Takao-class Heavy Cruiser | Japan | 1931 |
| Chub | Balao-class Submarine | United States | 1944 |
| Chuyo | Taiyo-class Escort Carrier | Japan | 1939 |
| Cisco | Balao-class Submarine | United States | 1942 |
| Cobalto | Acciaio-class Submarine | Italy | |
| Cobia | Gato-class Submarine | United States | |
| Cochino | Balao-class Submarine | United States | |
| Cod | Gato-class Submarine | United States | 1943 |
| Colbert | Suffren-class Heavy Cruiser | France | 1928 |
| Colorado | Colorado-class Battleship | United States | 1921 |
| Colossus | Colossus-class Light Carrier | United Kingdom | 1943 |
| Columbia | Cleveland-class Light Cruiser | United States | 1941 |
| Comandante Cappellini | Marcello-class Submarine | Italy | 1939 |
| Comandante Faà di Bruno | Marcello-class Submarine | Italy | 1939 |
| Concord | Omaha-class Light Cruiser | United States | 1921 |
| Console Generale Liuzzi | Liuzzi-class Submarine | Italy | 1939 |
| Conte di Cavour | Conte di Cavour-class Battleship | Italy | 1911 |
| Copahee | Bogue-class Escort Carrier | United States | 1941 |
| Corallo | Perla-class Submarine | Italy | |
| Corazziere | Soldati-class Destroyer | Italy | 1938 |
| Cornwall | County-class Heavy Cruiser | United Kingdom | 1926 |
| Corregidor | Casablanca-class Escort Carrier | United States | 1943 |
| Corsaro | Soldati-class Destroyer | Italy | |
| Corvina | Gato-class Submarine | United States | 1943 |
| Cossack | Tribal-class Destroyer | United Kingdom | 1937 |
| Cotten | Fletcher-class Destroyer | United States | 1943 |
| Courageous | Courageous-class Aircraft Carrier | United Kingdom | |
| Cowpens | Independence-class Light Carrier | United States | 1943 |
| Craven | Gridley-class Destroyer | United States | 1937 |
| Crevalle | Balao-class Submarine | United States | |
| Croaker | Gato-class Submarine | United States | 1943 |
| Cumberland | County-class Heavy Cruiser | United Kingdom | 1926 |
| Cummings | Mahan-class Destroyer | United States | 1935 |
| Cuttlefish | Cachalot-class Submarine | United States | 1933 |
| D (Planned) | Graf Zeppelin-class Aircraft Carrier | Germany | 1947 (Projected, not actual) |
| D (Planned) | No Classification | Germany | |
| Dace | Gato-class Submarine | United States | |
| Daihatsu-class Summary Information | Daihatsu-class Landing Craft | Japan | |
| Daly | Fletcher-class Destroyer | United States | 1942 |
| Danae | Danae-class Light Cruiser | United Kingdom | 1918 |
| Dandolo | Marcello-class Submarine | Italy | |
| Darter | Gato-class Submarine | United States | |
| De Grasse | De Grasse-class Light Cruiser | France | 1946 |
| Delfino | Squalo-class Submarine | Italy | |
| Delhi | Danae-class Light Cruiser | United Kingdom | 1918 |
| Dentuda | Balao-class Submarine | United States | |
| Denver | Cleveland-class Light Cruiser | United States | 1942 |
| Detroit | Omaha-class Light Cruiser | United States | 1922 |
| Deutschland | Deutschland-class Heavy Cruiser | Germany | 1931 |
| Devilfish | Balao-class Submarine | United States | |
| Devonshire | County-class Heavy Cruiser | United Kingdom | 1927 |
| Dianthus | Flower-class Corvette | United Kingdom | 1940 |
| Diaspro | Perla-class Submarine | Italy | |
| Dithmarschen | Dithmarschen-class Auxiliary | Germany | 1937 |
| Doherty | Evarts-class Destroyer Escort | United States | 1942 |
| Dolphin | Dolphin-class Submarine | United States | |
| Doneff | Evarts-class Destroyer Escort | United States | 1942 |
| Dorado | Gato-class Submarine | United States | 1943 |
| Dorsetshire | County-class Heavy Cruiser | United Kingdom | 1929 |
| Dragon | Danae-class Light Cruiser | United Kingdom | 1917 |
| Dragonet | Balao-class Submarine | United States | 1943 |
| Drayton | Mahan-class Destroyer | United States | 1936 |
| Drum | Gato-class Submarine | United States | 1941 |
| Duguay-Trouin | Duguay-Trouin-class Light Cruiser | France | 1923 |
| Duke of York | King George V (1939)-class Battleship | United Kingdom | |
| Dunkerque | Dunkerque-class Battleship | France | 1935 |
| Dupleix | Suffren-class Heavy Cruiser | France | 1930 |
| Duquesne | Duquesne-class Heavy Cruiser | France | 1925 |
| E (Planned) | No Classification | Germany | |
| Eagle | Eagle-class Aircraft Carrier | United Kingdom | 1918 |
| Edinburgh | Town-class Light Cruiser | United Kingdom | 1938 |
| Effingham | Hawkins-class Heavy Cruiser | United Kingdom | 1921 |
| Ellet | Benham-class Destroyer | United States | 1938 |
| Elli | Zhaohe-class Protected Cruiser | Greece | 1913 |
| Emden | Emden-class Light Cruiser | Germany | 1925 |
| Émile Bertin | Émile Bertin-class Light Cruiser | France | 1933 |
| Emo | Marcello-class Submarine | Italy | |
| Engstrom | Evarts-class Destroyer Escort | United States | 1942 |
| Enrico Tazzoli | Calvi-class Submarine | Italy | |
| Enterprise | Yorktown-class Aircraft Carrier | United States | 1936 |
| Ermland | Dithmarschen-class Auxiliary | Germany | |
| Erwin Wassner | No Classification | Germany | 1938 |
| Escolar | Balao-class Submarine | United States | 1943 |
| Essex | Essex-class Aircraft Carrier | United States | 1942 |
| Exeter | York-class Heavy Cruiser | United Kingdom | 1928 |
| Express | E-class Destroyer | United Kingdom | 1934 |
| F (Planned) | No Classification | Germany | |
| F1 | F-class Destroyer Escort | Germany | 1935 |
| F10 | F-class Destroyer Escort | Germany | 1936 |
| F2 | F-class Destroyer Escort | Germany | 1935 |
| F3 | F-class Destroyer Escort | Germany | 1935 |
| F4 | F-class Destroyer Escort | Germany | 1935 |
| F5 | F-class Destroyer Escort | Germany | 1935 |
| F6 | F-class Destroyer Escort | Germany | 1935 |
| F7 | F-class Destroyer Escort | Germany | 1936 |
| F8 | F-class Destroyer Escort | Germany | 1936 |
| F9 | F-class Destroyer Escort | Germany | 1936 |
| Fairmile D-class Summary Information | Fairmile D-class Motor Torpedo Boat | United Kingdom | |
| Falke | 1923-class Motor Torpedo Boat | Germany | 1926 |
| Falke | No Classification | Germany | 1940 |
| Farragut | Farragut-class Destroyer | United States | 1934 |
| Fieberling | Buckley-class Destroyer Escort | United States | 1944 |
| Finback | Gato-class Submarine | United States | 1941 |
| Fiume | Zara-class Heavy Cruiser | Italy | |
| Flasher | Gato-class Submarine | United States | |
| Flier | Gato-class Submarine | United States | 1943 |
| Flounder | Gato-class Submarine | United States | |
| Flying Fish | Gato-class Submarine | United States | 1941 |
| Foch | Suffren-class Heavy Cruiser | France | 1929 |
| Formidable | Illustrious-class Aircraft Carrier | United Kingdom | 1939 |
| Fox | Clemson-class Destroyer | United States | 1919 |
| Franken | Dithmarschen-class Auxiliary | Germany | 1939 |
| Franklin | Essex-class Aircraft Carrier | United States | 1943 |
| Friesenland | No Classification | Germany | 1937 |
| Fuciliere | Soldati-class Destroyer | Italy | 1938 |
| Furious | Courageous-class Aircraft Carrier | United Kingdom | 1916 |
| Furutaka | Furutaka-class Heavy Cruiser | Japan | 1925 |
| Fuso | Fuso-class Battleship | Japan | 1914 |
| G | No Classification | Germany | 1939 |
| G (Planned) | No Classification | Germany | |
| G1 | G-class Destroyer Escort | Germany | |
| G2 | G-class Destroyer Escort | Germany | |
| G3 | G-class Destroyer Escort | Germany | |
| G4 (Planned) | G-class Destroyer Escort | Germany | |
| Gabilan | Gato-class Submarine | United States | 1943 |
| Gar | Tambor-class Submarine | United States | 1940 |
| Garland | G-class Destroyer | Poland | 1935 |
| Gato | Gato-class Submarine | United States | |
| Gemma | Perla-class Submarine | Italy | |
| Geniere | Soldati-class Destroyer | Italy | 1938 |
| George Washington Carver | Liberty-class Merchant Vessel | United States | 1943 |
| Georges Leygues | La Galissonnière-class Light Cruiser | France | 1936 |
| Giada | Acciaio-class Submarine | Italy | |
| Gilmore | Evarts-class Destroyer Escort | United States | 1942 |
| Giosuè Carducci | Oriani-class Destroyer | Italy | |
| Giulio Cesare | Conte di Cavour-class Battleship | Italy | 1911 |
| Giuseppe Finzi | Calvi-class Submarine | Italy | |
| Glasgow | Town-class Light Cruiser | United Kingdom | 1936 |
| Glauco | Glauco-class Submarine | Italy | |
| Gloire | La Galissonnière-class Light Cruiser | France | 1935 |
| Glorious | Courageous-class Aircraft Carrier | United Kingdom | 1916 |
| Glory | Colossus-class Light Carrier | United Kingdom | 1943 |
| Gneisenau | Gneisenau-class Battlecruiser | Germany | 1936 |
| Golet | Gato-class Submarine | United States | 1943 |
| Gorch Fock | Gorch Fock-class Barque | Germany | 1933 |
| Gorizia | Zara-class Heavy Cruiser | Italy | 1930 |
| Graf Zeppelin | Graf Zeppelin-class Aircraft Carrier | Germany | 1938 |
| Grampus | Tambor-class Submarine | United States | 1940 |
| Granatiere | Soldati-class Destroyer | Italy | 1938 |
| Granito | Acciaio-class Submarine | Italy | |
| Graph | Type VII-class Submarine | United Kingdom | |
| Grayback | Tambor-class Submarine | United States | 1941 |
| Grayling | Tambor-class Submarine | United States | |
| Grayson | Gleaves-class Destroyer | United States | 1940 |
| Greenling | Gato-class Submarine | United States | |
| Greif | 1923-class Motor Torpedo Boat | Germany | 1926 |
| Greif | No Classification | Germany | |
| Grenadier | Tambor-class Submarine | United States | |
| Gridley | Gridley-class Destroyer | United States | 1936 |
| Grille | No Classification | Germany | 1934 |
| Grom | Grom-class Destroyer | Poland | 1936 |
| Grouper | Gato-class Submarine | United States | |
| Growler | Gato-class Submarine | United States | 1941 |
| Grunion | Gato-class Submarine | United States | 1941 |
| Guam | Alaska-class Large Cruiser | United States | 1943 |
| Guardfish | Gato-class Submarine | United States | |
| Guavina | Balao-class Submarine | United States | 1943 |
| Gudgeon | Tambor-class Submarine | United States | |
| Guglielmo Marconi | Marconi-class Submarine | Italy | 1939 |
| Guitarro | Gato-class Submarine | United States | 1943 |
| Gulland | Isles-class Trawler | United Kingdom | 1943 |
| Gunnel | Gato-class Submarine | United States | 1942 |
| Gurnard | Gato-class Submarine | United States | |
| H | H-class Battleship | Germany | |
| H (Planned) | No Classification | Germany | |
| H (Planned) | No Classification | Germany | |
| Ha-101 | Ha-101-class Submarine | Japan | 1944 |
| Ha-102 | Ha-101-class Submarine | Japan | 1944 |
| Ha-104 | Ha-101-class Submarine | Japan | 1944 |
| Ha-19 | Type A-class Midget Submarine | Japan | |
| Ha-201-class Summary Information | Ha-201-class Submarine | Japan | |
| Hackleback | Balao-class Submarine | United States | 1943 |
| Haddo | Gato-class Submarine | United States | |
| Haddock | Gato-class Submarine | United States | 1941 |
| Haguro | Myoko-class Heavy Cruiser | Japan | 1928 |
| Haichen | Hairong-class Protected Cruiser | China | |
| Haichou | Hairong-class Protected Cruiser | China | 1897 |
| Haiqi | Haitien-class Protected Cruiser | China | |
| Hairong | Hairong-class Protected Cruiser | China | 1897 |
| Hake | Gato-class Submarine | United States | |
| Hakusan Maru | No Classification | Japan | 1918 |
| Halibut | Gato-class Submarine | United States | |
| Hamakaze | Kagero-class Destroyer | Japan | |
| Hamilton | Wickes-class Destroyer | United States | 1919 |
| Hammann | Sims-class Destroyer | United States | 1939 |
| Hammerhead | Balao-class Submarine | United States | 1943 |
| Hancock | Essex-class Aircraft Carrier | United States | 1944 |
| Hans Albrecht Wedel | Hans Albrecht Wedel-class Seaplane Tender | Germany | 1940 |
| Harder | Gato-class Submarine | United States | 1942 |
| Hardhead | Balao-class Submarine | United States | |
| Haruna | Kongo-class Battleship | Japan | 1913 |
| Hatsuzakura | Tachibana-class Destroyer | Japan | |
| Havelland | Dithmarschen-class Auxiliary | Germany | |
| Hawkbill | Balao-class Submarine | United States | 1944 |
| Hela | Hela-class Tender | Germany | 1938 |
| Helena (Baltimore-class) | Baltimore-class Heavy Cruiser | United States | |
| Helena (St. Louis-class) | St. Louis-class Light Cruiser | United States | 1939 |
| Helm | Bagley-class Destroyer | United States | 1937 |
| Henley | Bagley-class Destroyer | United States | 1937 |
| Herbert Norkus | Gorch Fock-class Barque | Germany | 1939 |
| Hermann Köhl | Hans Albrecht Wedel-class Seaplane Tender | Germany | |
| Hermes | Hermes-class Light Carrier | United Kingdom | 1919 |
| Herring | Gato-class Submarine | United States | |
| Hiei | Kongo-class Battleship | Japan | 1912 |
| Hikawa Maru | No Classification | Japan | 1929 |
| Hiryu | Soryu-class Aircraft Carrier | Japan | 1937 |
| Hiyo | Hiyo-class Escort Carrier | Japan | 1941 |
| Hobart | Leander-class Light Cruiser | Australia | |
| Hobbs Victory | Victory-class Merchant Vessel | United States | 1945 |
| Hoe | Gato-class Submarine | United States | 1942 |
| Hoel | Fletcher-class Destroyer | United States | 1942 |
| Holland | Holland-class Submarine Tender | United States | 1926 |
| Honolulu | Brooklyn-class Light Cruiser | United States | 1937 |
| Hood | Admiral-class Battlecruiser | United Kingdom | 1918 |
| Hornet (Essex-class) | Essex-class Aircraft Carrier | United States | 1943 |
| Hornet (Yorktown-class) | Yorktown-class Aircraft Carrier | United States | 1940 |
| Horst Wessel | Gorch Fock-class Barque | Germany | 1936 |
| Hosho | Hosho-class Light Carrier | Japan | 1921 |
| Houston | Northampton-class Heavy Cruiser | United States | 1929 |
| Howe | King George V (1939)-class Battleship | United Kingdom | 1940 |
| Hulbert | Clemson-class Destroyer | United States | 1919 |
| Hull | Farragut-class Destroyer | United States | 1934 |
| Hyuga | Ise-class Battleship | Japan | 1917 |
| I-14 | Type AM-class Submarine | Japan | 1944 |
| I-369 | Type D1-class Submarine | Japan | 1944 |
| I-400 | I-400-class Submarine | Japan | |
| I-401 | I-400-class Submarine | Japan | |
| I-402 | I-400-class Submarine | Japan | |
| I-52 | C3-class Submarine | Japan | |
| I-53 | C3-class Submarine | Japan | |
| I-58 | Type B3-class Submarine | Japan | 1943 |
| I-58/I-158 | Kaidai-class Submarine | Japan | 1925 |
| I-68/I-168 | Kaidai-class Submarine | Japan | 1933 |
| Ibuki | Ibuki-class Light Carrier | Japan | 1943 |
| Icefish | Balao-class Submarine | United States | |
| Ikazuchi | Akatsuki-class Destroyer | Japan | 1932 |
| Illinois | Iowa-class Battleship | United States | |
| Illustrious | Illustrious-class Aircraft Carrier | United Kingdom | 1939 |
| Ilmarinen | Väinämöinen-class Coastal Defense Ship | Finland | 1931 |
| Iltis | 1924-class Motor Torpedo Boat | Germany | 1927 |
| Impero | Vittorio Veneto-class Battleship | Italy | 1939 |
| Independence | Independence-class Light Carrier | United States | 1942 |
| Indiana | South Dakota-class Battleship | United States | 1941 |
| Indianapolis | Portland-class Heavy Cruiser | United States | 1931 |
| Indomitable | Illustrious-class Aircraft Carrier | United Kingdom | 1940 |
| Intrepid | Essex-class Aircraft Carrier | United States | 1943 |
| Iowa | Iowa-class Battleship | United States | 1942 |
| Irako | No Classification | Japan | 1941 |
| Iride | Perla-class Submarine | Italy | 1936 |
| Irwin | Fletcher-class Destroyer | United States | 1943 |
| Isaac Sweers | Gerard Callenburgh-class Destroyer | Netherlands | 1940 |
| Ise | Ise-class Battleship | Japan | 1916 |
| Isherwood | Fletcher-class Destroyer | United States | 1942 |
| Isuzu | Nagara-class Light Cruiser | Japan | 1921 |
| Itsukushima | No Classification | Japan | 1929 |
| Iwate | Izumo-class Armored Cruiser | Japan | 1900 |
| Izumo | Izumo-class Armored Cruiser | Japan | 1898 |
| J | H-class Battleship | Germany | |
| Jack | Gato-class Submarine | United States | |
| Jaguar | 1924-class Motor Torpedo Boat | Germany | 1928 |
| Jallao | Balao-class Submarine | United States | |
| Jantina | Argonauta-class Submarine | Italy | 1932 |
| Jean Bart | Richelieu-class Battleship | France | 1940 |
| Jean de Vienne | La Galissonnière-class Light Cruiser | France | 1935 |
| Jeanne d'Arc | Jeanne d'Arc-class Light Cruiser | France | |
| Jintsu | Sendai-class Light Cruiser | Japan | 1923 |
| Johnston | Fletcher-class Destroyer | United States | 1943 |
| Juneau | Atlanta-class Light Cruiser | United States | 1941 |
| Junyo | Hiyo-class Escort Carrier | Japan | 1941 |
| K (Planned) | H-class Battleship | Germany | 1942 (Projected, not actual) |
| K1 (Planned) | K1-class Gunboat | Germany | 1941 (Projected, not actual) |
| K2 (Planned) | K1-class Gunboat | Germany | 1941 (Projected, not actual) |
| K3 (Planned) | K1-class Gunboat | Germany | 1941 (Projected, not actual) |
| K4 (Planned) | K1-class Gunboat | Germany | 1941 (Projected, not actual) |
| Kaga | Kaga-class Aircraft Carrier | Japan | 1921 |
| Kaganovich | Kirov-class Light Cruiser | Russia | 1944 |
| Kairyu-class Summary Information | Kairyu-class Midget Submarine | Japan | |
| Kaiten-class Summary Information | Kaiten-class Midget Submarine | Japan | |
| Kaiyo | Kaiyo-class Escort Carrier | Japan | 1938 |
| Kako | Furutaka-class Heavy Cruiser | Japan | 1925 |
| Kalinin | Kirov-class Light Cruiser | Russia | 1942 |
| Kamikaze | Kamikaze-class Destroyer | Japan | 1922 |
| Kamoi | Kamoi-class Seaplane Tender | Japan | 1922 |
| Karlsruhe | K-class Light Cruiser | Germany | 1927 |
| Kashi | Momo-class Destroyer | Japan | 1916 |
| Kashii | Katori-class Light Cruiser | Japan | 1941 |
| Kashima | Katori-class Light Cruiser | Japan | 1939 |
| Kasuga | Kasuga-class Armored Cruiser | Japan | 1902 |
| Katori | Katori-class Light Cruiser | Japan | 1939 |
| Katsuragi | Unryu-class Aircraft Carrier | Japan | 1943 |
| Kelly | K-class Destroyer | United Kingdom | 1938 |
| Kembu Maru | No Classification | Japan | |
| Kentucky | Iowa-class Battleship | United States | 1950 |
| Kete | Balao-class Submarine | United States | 1944 |
| Kikuzuki | Mutsuki-class Destroyer | Japan | 1926 |
| Kilkis | Mississippi-class Battleship | Greece | |
| Kimberly | Fletcher-class Destroyer | United States | 1943 |
| Kinai Maru | No Classification | Japan | |
| King George V | King George V (1939)-class Battleship | United Kingdom | 1939 |
| Kingfish | Gato-class Submarine | United States | |
| Kinu | Nagara-class Light Cruiser | Japan | 1922 |
| Kinugasa | Furutaka-class Heavy Cruiser | Japan | 1926 |
| Kirishima | Kongo-class Battleship | Japan | 1913 |
| Kirov | Kirov-class Light Cruiser | Russia | 1936 |
| Kiso | Kuma-class Light Cruiser | Japan | 1920 |
| Kitakami | Kuma-class Light Cruiser | Japan | 1920 |
| Kitty Hawk | Kitty Hawk-class Aircraft Transport Ship | United States | 1932 |
| Komet | No Classification | Germany | 1936 |
| Kondor | 1923-class Motor Torpedo Boat | Germany | 1926 |
| Kongo | Kongo-class Battleship | Japan | 1913 |
| Kormoran | No Classification | Germany | 1938 |
| Kraken | Balao-class Submarine | United States | |
| Kuala | No Classification | United Kingdom | |
| Kuma | Kuma-class Light Cruiser | Japan | 1919 |
| Kumano | Mogami-class Heavy Cruiser | Japan | 1936 |
| Kurmark | No Classification | Germany | |
| Kyne | Cannon-class Destroyer Escort | United States | 1943 |
| Köln | K-class Light Cruiser | Germany | 1928 |
| Königsberg | K-class Light Cruiser | Germany | 1927 |
| L (Planned) | H-class Battleship | Germany | 1940 (Projected, not actual) |
| La Galissonnière | La Galissonnière-class Light Cruiser | France | |
| La Motte-Picquet | Duguay-Trouin-class Light Cruiser | France | 1924 |
| Laffey (Allen M. Sumner-class) | Allen M. Sumner-class Destroyer | United States | 1943 |
| Laffey (Benson-class) | Benson-class Destroyer | United States | 1941 |
| Lagarto | Balao-class Submarine | United States | |
| Lamprey | Balao-class Submarine | United States | |
| Lanciere | Soldati-class Destroyer | Italy | |
| Langley (Independence-class) | Independence-class Light Carrier | United States | 1943 |
| Langley (Langley-class) | Langley-class Seaplane Tender | United States | |
| Lansdowne | Gleaves-class Destroyer | United States | 1942 |
| Lapon | Gato-class Submarine | United States | |
| Lardner | Gleaves-class Destroyer | United States | 1942 |
| Lawrence | Clemson-class Destroyer | United States | 1920 |
| LCI(L)-class Summary Information | LCI(L)-class Landing Ship | United States | |
| LCVP-class Summary Information | LCVP-class Landing Craft | United States | |
| Legionaro | Soldati-class Destroyer | Italy | |
| Leipzig | Leipzig-class Light Cruiser | Germany | 1929 |
| Lemnos | Mississippi-class Battleship | Greece | 1905 |
| Leonardo da Vinci | Marconi-class Submarine | Italy | 1939 |
| Leopard | 1924-class Motor Torpedo Boat | Germany | 1928 |
| Leutze | Fletcher-class Destroyer | United States | 1942 |
| Lexington (Essex-class) | Essex-class Aircraft Carrier | United States | 1942 |
| Lexington (Lexington-class) | Lexington-class Aircraft Carrier | United States | 1925 |
| Ling | Balao-class Submarine | United States | 1943 |
| Lionfish | Balao-class Submarine | United States | |
| Littorio | Vittorio Veneto-class Battleship | Italy | 1937 |
| Lizardfish | Balao-class Submarine | United States | |
| Loggerhead | Balao-class Submarine | United States | |
| London | County-class Heavy Cruiser | United Kingdom | 1927 |
| Long Island | Long Island-class Escort Carrier | United States | 1940 |
| Lorraine | Bretagne-class Battleship | France | 1913 |
| Louisville | Northampton-class Heavy Cruiser | United States | 1930 |
| LST-1 | LST-class Landing Ship | United States | 1942 |
| LST-412 | LST-class Landing Ship | United Kingdom | 1942 |
| Luce | Fletcher-class Destroyer | United States | 1943 |
| Luchs | 1924-class Motor Torpedo Boat | Germany | 1928 |
| Luigi Torelli | Marconi-class Submarine | Italy | 1940 |
| Lützow | Admiral Hipper-class Heavy Cruiser | Germany | 1939 |
| M | No Classification | Germany | |
| M (Planned) | H-class Battleship | Germany | 1942 (Projected, not actual) |
| M (Planned) | M-class Light Cruiser | Germany | 1941 (Projected, not actual) |
| M (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| M1 | M-class Minesweeper | Germany | 1937 |
| M10 | M-class Minesweeper | Germany | 1938 |
| M101 | M-class Minesweeper | Germany | 1941 |
| M102 | M-class Minesweeper | Germany | 1941 |
| M103 | M-class Minesweeper | Germany | 1941 |
| M104 | M-class Minesweeper | Germany | 1942 |
| M107 | M-class Minesweeper | Germany | 1918 |
| M11 | M-class Minesweeper | Germany | 1938 |
| M12 | M-class Minesweeper | Germany | 1938 |
| M13 | M-class Minesweeper | Germany | 1939 |
| M131 | M-class Minesweeper | Germany | |
| M132 | M-class Minesweeper | Germany | |
| M133 | M-class Minesweeper | Germany | |
| M14 | M-class Minesweeper | Germany | 1939 |
| M15 | M-class Minesweeper | Germany | 1939 |
| M151 | M-class Minesweeper | Germany | |
| M152 | M-class Minesweeper | Germany | |
| M153 | M-class Minesweeper | Germany | |
| M154 | M-class Minesweeper | Germany | |
| M155 | M-class Minesweeper | Germany | |
| M156 | M-class Minesweeper | Germany | |
| M16 | M-class Minesweeper | Germany | 1939 |
| M17 | M-class Minesweeper | Germany | 1939 |
| M18 | M-class Minesweeper | Germany | 1939 |
| M19 | M-class Minesweeper | Germany | 1939 |
| M2 | M-class Minesweeper | Germany | 1937 |
| M2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| M20 | M-class Minesweeper | Germany | 1939 |
| M201 | M-class Minesweeper | Germany | 1940 |
| M202 | M-class Minesweeper | Germany | 1940 |
| M203 | M-class Minesweeper | Germany | 1940 |
| M204 | M-class Minesweeper | Germany | 1940 |
| M205 | M-class Minesweeper | Germany | 1941 |
| M206 | M-class Minesweeper | Germany | 1941 |
| M21 | M-class Minesweeper | Germany | 1939 |
| M22 | M-class Minesweeper | Germany | 1940 |
| M23 | M-class Minesweeper | Germany | 1940 |
| M24 | M-class Minesweeper | Germany | 1940 |
| M25 | M-class Minesweeper | Germany | 1940 |
| M251 | M-class Minesweeper | Germany | 1940 |
| M252 | M-class Minesweeper | Germany | 1940 |
| M253 | M-class Minesweeper | Germany | 1940 |
| M254 | M-class Minesweeper | Germany | 1941 |
| M255 | M-class Minesweeper | Germany | 1941 |
| M256 | M-class Minesweeper | Germany | 1941 |
| M26 | M-class Minesweeper | Germany | 1940 |
| M261 | M-class Minesweeper | Germany | 1942 |
| M262 | M-class Minesweeper | Germany | 1942 |
| M263 | M-class Minesweeper | Germany | 1942 |
| M264 | M-class Minesweeper | Germany | |
| M265 | M-class Minesweeper | Germany | 1943 |
| M266 | M-class Minesweeper | Germany | 1944 |
| M267 | M-class Minesweeper | Germany | 1944 |
| M27 | M-class Minesweeper | Germany | 1940 |
| M271 | M-class Minesweeper | Germany | 1942 |
| M272 | M-class Minesweeper | Germany | 1942 |
| M273 | M-class Minesweeper | Germany | 1942 |
| M274 | M-class Minesweeper | Germany | 1942 |
| M275 | M-class Minesweeper | Germany | 1943 |
| M276 | M-class Minesweeper | Germany | 1943 |
| M277 | M-class Minesweeper | Germany | 1943 |
| M278 | M-class Minesweeper | Germany | 1944 |
| M279 | M-class Minesweeper | Germany | 1944 |
| M28 | M-class Minesweeper | Germany | 1940 |
| M280 | M-class Minesweeper | Germany | |
| M29 | M-class Minesweeper | Germany | 1940 |
| M291 | M-class Minesweeper | Germany | |
| M292 | M-class Minesweeper | Germany | |
| M293 | M-class Minesweeper | Germany | |
| M294 | M-class Minesweeper | Germany | |
| M295 (Planned) | M-class Minesweeper | Germany | |
| M296 | M-class Minesweeper | Germany | |
| M297 (Planned) | M-class Minesweeper | Germany | |
| M3 | M-class Minesweeper | Germany | 1937 |
| M30 | M-class Minesweeper | Germany | 1940 |
| M301 | M-class Minesweeper | Germany | |
| M302 | M-class Minesweeper | Germany | |
| M303 | M-class Minesweeper | Germany | |
| M304 | M-class Minesweeper | Germany | |
| M305 | M-class Minesweeper | Germany | |
| M306 | M-class Minesweeper | Germany | |
| M307 | M-class Minesweeper | Germany | |
| M31 | M-class Minesweeper | Germany | 1940 |
| M32 | M-class Minesweeper | Germany | 1940 |
| M321 | M-class Minesweeper | Germany | 1941 |
| M322 | M-class Minesweeper | Germany | 1941 |
| M323 | M-class Minesweeper | Germany | 1941 |
| M324 | M-class Minesweeper | Germany | 1941 |
| M325 | M-class Minesweeper | Germany | 1942 |
| M326 | M-class Minesweeper | Germany | 1943 |
| M327 | M-class Minesweeper | Germany | 1943 |
| M328 | M-class Minesweeper | Germany | 1943 |
| M329 | M-class Minesweeper | Germany | |
| M33 | M-class Minesweeper | Germany | 1942 |
| M330 | M-class Minesweeper | Germany | |
| M34 | M-class Minesweeper | Germany | 1942 |
| M341 | M-class Minesweeper | Germany | 1941 |
| M342 | M-class Minesweeper | Germany | 1941 |
| M343 | M-class Minesweeper | Germany | 1941 |
| M344 | M-class Minesweeper | Germany | 1941 |
| M345 | M-class Minesweeper | Germany | 1942 |
| M346 | M-class Minesweeper | Germany | 1942 |
| M347 | M-class Minesweeper | Germany | 1942 |
| M348 | M-class Minesweeper | Germany | 1942 |
| M35 | M-class Minesweeper | Germany | 1940 |
| M36 | M-class Minesweeper | Germany | 1940 |
| M361 | M-class Minesweeper | Germany | |
| M362 | M-class Minesweeper | Germany | |
| M363 | M-class Minesweeper | Germany | |
| M364 | M-class Minesweeper | Germany | |
| M365 | M-class Minesweeper | Germany | |
| M366 | M-class Minesweeper | Germany | |
| M367 | M-class Minesweeper | Germany | |
| M368 | M-class Minesweeper | Germany | |
| M369 | M-class Minesweeper | Germany | |
| M37 | M-class Minesweeper | Germany | 1940 |
| M370 | M-class Minesweeper | Germany | |
| M371 | M-class Minesweeper | Germany | |
| M372 | M-class Minesweeper | Germany | |
| M373 | M-class Minesweeper | Germany | |
| M374 | M-class Minesweeper | Germany | |
| M375 | M-class Minesweeper | Germany | |
| M376 | M-class Minesweeper | Germany | |
| M377 | M-class Minesweeper | Germany | |
| M378 (Planned) | M-class Minesweeper | Germany | |
| M379 (Planned) | M-class Minesweeper | Germany | |
| M38 | M-class Minesweeper | Germany | 1941 |
| M380 (Planned) | M-class Minesweeper | Germany | |
| M381 | M-class Minesweeper | Germany | |
| M382 | M-class Minesweeper | Germany | |
| M383 | M-class Minesweeper | Germany | |
| M384 | M-class Minesweeper | Germany | |
| M385 | M-class Minesweeper | Germany | |
| M386 | M-class Minesweeper | Germany | |
| M387 | M-class Minesweeper | Germany | |
| M388 | M-class Minesweeper | Germany | |
| M389 | M-class Minesweeper | Germany | |
| M39 | M-class Minesweeper | Germany | 1941 |
| M4 | M-class Minesweeper | Germany | 1937 |
| M401 | M-class Minesweeper | Germany | |
| M402 | M-class Minesweeper | Germany | |
| M403 | M-class Minesweeper | Germany | |
| M404 | M-class Minesweeper | Germany | |
| M405 | M-class Minesweeper | Germany | |
| M406 | M-class Minesweeper | Germany | |
| M407 | M-class Minesweeper | Germany | |
| M408 | M-class Minesweeper | Germany | |
| M409 (Planned) | M-class Minesweeper | Germany | |
| M410 (Planned) | M-class Minesweeper | Germany | |
| M411 | M-class Minesweeper | Germany | |
| M412 | M-class Minesweeper | Germany | |
| M413 | M-class Minesweeper | Germany | |
| M414 | M-class Minesweeper | Germany | |
| M415 | M-class Minesweeper | Germany | |
| M416 | M-class Minesweeper | Germany | |
| M417 (Planned) | M-class Minesweeper | Germany | |
| M418 (Planned) | M-class Minesweeper | Germany | |
| M419 (Planned) | M-class Minesweeper | Germany | |
| M420 (Planned) | M-class Minesweeper | Germany | |
| M421 | M-class Minesweeper | Germany | |
| M422 | M-class Minesweeper | Germany | |
| M423 | M-class Minesweeper | Germany | |
| M424 | M-class Minesweeper | Germany | |
| M425 | M-class Minesweeper | Germany | |
| M426 | M-class Minesweeper | Germany | |
| M427 | M-class Minesweeper | Germany | |
| M428 | M-class Minesweeper | Germany | |
| M429 (Planned) | M-class Minesweeper | Germany | |
| M430 (Planned) | M-class Minesweeper | Germany | |
| M431 | M-class Minesweeper | Germany | |
| M432 | M-class Minesweeper | Germany | |
| M433 | M-class Minesweeper | Germany | |
| M434 | M-class Minesweeper | Germany | |
| M435 | M-class Minesweeper | Germany | |
| M436 | M-class Minesweeper | Germany | |
| M437 | M-class Minesweeper | Germany | |
| M438 | M-class Minesweeper | Germany | |
| M439 (Planned) | M-class Minesweeper | Germany | |
| M440 (Planned) | M-class Minesweeper | Germany | |
| M441 | M-class Minesweeper | Germany | |
| M442 | M-class Minesweeper | Germany | |
| M443 | M-class Minesweeper | Germany | |
| M444 | M-class Minesweeper | Germany | |
| M445 | M-class Minesweeper | Germany | |
| M446 | M-class Minesweeper | Germany | |
| M447 (Planned) | M-class Minesweeper | Germany | |
| M448 (Planned) | M-class Minesweeper | Germany | |
| M449 (Planned) | M-class Minesweeper | Germany | |
| M450 (Planned) | M-class Minesweeper | Germany | |
| M451 (Planned) | M-class Minesweeper | Germany | |
| M452 (Planned) | M-class Minesweeper | Germany | |
| M453 (Planned) | M-class Minesweeper | Germany | |
| M454 (Planned) | M-class Minesweeper | Germany | |
| M455 (Planned) | M-class Minesweeper | Germany | |
| M456 (Planned) | M-class Minesweeper | Germany | |
| M457 (Planned) | M-class Minesweeper | Germany | |
| M458 (Planned) | M-class Minesweeper | Germany | |
| M459 | M-class Minesweeper | Germany | |
| M460 | M-class Minesweeper | Germany | |
| M461 | M-class Minesweeper | Germany | |
| M462 | M-class Minesweeper | Germany | |
| M463 | M-class Minesweeper | Germany | |
| M464 (Planned) | M-class Minesweeper | Germany | |
| M465 (Planned) | M-class Minesweeper | Germany | |
| M466 (Planned) | M-class Minesweeper | Germany | |
| M467 | M-class Minesweeper | Germany | |
| M468 | M-class Minesweeper | Germany | |
| M469 | M-class Minesweeper | Germany | |
| M470 | M-class Minesweeper | Germany | |
| M471 | M-class Minesweeper | Germany | |
| M472 (Planned) | M-class Minesweeper | Germany | |
| M473 (Planned) | M-class Minesweeper | Germany | |
| M474 (Planned) | M-class Minesweeper | Germany | |
| M475 | M-class Minesweeper | Germany | |
| M476 | M-class Minesweeper | Germany | |
| M477 (Planned) | M-class Minesweeper | Germany | |
| M478 (Planned) | M-class Minesweeper | Germany | |
| M479 (Planned) | M-class Minesweeper | Germany | |
| M480 (Planned) | M-class Minesweeper | Germany | |
| M481 (Planned) | M-class Minesweeper | Germany | |
| M482 (Planned) | M-class Minesweeper | Germany | |
| M483 | M-class Minesweeper | Germany | |
| M484 | M-class Minesweeper | Germany | |
| M485 (Planned) | M-class Minesweeper | Germany | |
| M486 | M-class Minesweeper | Germany | |
| M487 (Planned) | M-class Minesweeper | Germany | |
| M488 (Planned) | M-class Minesweeper | Germany | |
| M489 | M-class Minesweeper | Germany | |
| M490 (Planned) | M-class Minesweeper | Germany | |
| M491 (Planned) | M-class Minesweeper | Germany | |
| M492 (Planned) | M-class Minesweeper | Germany | |
| M493 (Planned) | M-class Minesweeper | Germany | |
| M494 (Planned) | M-class Minesweeper | Germany | |
| M495 | M-class Minesweeper | Germany | |
| M496 | M-class Minesweeper | Germany | |
| M5 | M-class Minesweeper | Germany | 1937 |
| M6 | M-class Minesweeper | Germany | 1938 |
| M601 (Planned) | M-class Minesweeper | Germany | |
| M602 (Planned) | M-class Minesweeper | Germany | |
| M603 (Planned) | M-class Minesweeper | Germany | |
| M604 (Planned) | M-class Minesweeper | Germany | |
| M605 (Planned) | M-class Minesweeper | Germany | |
| M606 (Planned) | M-class Minesweeper | Germany | |
| M607 (Planned) | M-class Minesweeper | Germany | |
| M608 (Planned) | M-class Minesweeper | Germany | |
| M609 (Planned) | M-class Minesweeper | Germany | |
| M610 (Planned) | M-class Minesweeper | Germany | |
| M611 (Planned) | M-class Minesweeper | Germany | |
| M612 | M-class Minesweeper | Germany | 1945 |
| M613 (Planned) | M-class Minesweeper | Germany | |
| M614 (Planned) | M-class Minesweeper | Germany | |
| M615 (Planned) | M-class Minesweeper | Germany | |
| M616 (Planned) | M-class Minesweeper | Germany | |
| M617 (Planned) | M-class Minesweeper | Germany | |
| M618 (Planned) | M-class Minesweeper | Germany | |
| M619 (Planned) | M-class Minesweeper | Germany | |
| M620 (Planned) | M-class Minesweeper | Germany | |
| M621 (Planned) | M-class Minesweeper | Germany | |
| M622 (Planned) | M-class Minesweeper | Germany | |
| M623 (Planned) | M-class Minesweeper | Germany | |
| M624 (Planned) | M-class Minesweeper | Germany | |
| M625 (Planned) | M-class Minesweeper | Germany | |
| M626 (Planned) | M-class Minesweeper | Germany | |
| M627 (Planned) | M-class Minesweeper | Germany | |
| M628 (Planned) | M-class Minesweeper | Germany | |
| M629 (Planned) | M-class Minesweeper | Germany | |
| M630 (Planned) | M-class Minesweeper | Germany | |
| M631 (Planned) | M-class Minesweeper | Germany | |
| M632 (Planned) | M-class Minesweeper | Germany | |
| M633 (Planned) | M-class Minesweeper | Germany | |
| M7 | M-class Minesweeper | Germany | 1937 |
| M8 | M-class Minesweeper | Germany | 1937 |
| M801 (Planned) | M-class Minesweeper | Germany | |
| M802 (Planned) | M-class Minesweeper | Germany | |
| M803 (Planned) | M-class Minesweeper | Germany | |
| M804 (Planned) | M-class Minesweeper | Germany | |
| M805 (Planned) | M-class Minesweeper | Germany | |
| M806 (Planned) | M-class Minesweeper | Germany | |
| M807 (Planned) | M-class Minesweeper | Germany | |
| M808 (Planned) | M-class Minesweeper | Germany | |
| M809 (Planned) | M-class Minesweeper | Germany | |
| M81 | M-class Minesweeper | Germany | 1940 |
| M810 (Planned) | M-class Minesweeper | Germany | |
| M811 (Planned) | M-class Minesweeper | Germany | |
| M812 (Planned) | M-class Minesweeper | Germany | |
| M813 (Planned) | M-class Minesweeper | Germany | |
| M814 (Planned) | M-class Minesweeper | Germany | |
| M815 (Planned) | M-class Minesweeper | Germany | |
| M816 (Planned) | M-class Minesweeper | Germany | |
| M82 | M-class Minesweeper | Germany | 1941 |
| M83 | M-class Minesweeper | Germany | 1941 |
| M84 | M-class Minesweeper | Germany | 1941 |
| M85 | M-class Minesweeper | Germany | 1941 |
| M9 | M-class Minesweeper | Germany | 1937 |
| Macabi | Balao-class Submarine | United States | |
| Mackerel | Mackerel-class Submarine | United States | |
| Maggiore Baracca | Marconi-class Submarine | Italy | 1940 |
| Mahan | Mahan-class Destroyer | United States | 1935 |
| Makin Island | Casablanca-class Escort Carrier | United States | 1944 |
| Malachite | Perla-class Submarine | Italy | |
| Malaya | Queen Elizabeth-class Battleship | United Kingdom | 1915 |
| Manila Bay | Casablanca-class Escort Carrier | United States | 1943 |
| Manta | Balao-class Submarine | United States | 1943 |
| Mapiro | Balao-class Submarine | United States | |
| Marblehead | Omaha-class Light Cruiser | United States | 1923 |
| Marcello | Marcello-class Submarine | Italy | |
| Marcus Island | Casablanca-class Escort Carrier | United States | 1943 |
| Marlin | Mackerel-class Submarine | United States | 1941 |
| Marseillaise | La Galissonnière-class Light Cruiser | France | 1935 |
| Maryland | Colorado-class Battleship | United States | 1920 |
| MAS-class Summary Information | MAS-class Motor Torpedo Boat | Italy | |
| Mason | Evarts-class Destroyer Escort | United States | 1943 |
| Massachusetts | South Dakota-class Battleship | United States | 1941 |
| Matsu | Matsu-class Destroyer | Japan | 1944 |
| Mauritius | Crown Colony-class Light Cruiser | United Kingdom | 1939 |
| Maury | Gridley-class Destroyer | United States | 1938 |
| Maxim Gorkiy | Kirov-class Light Cruiser | Russia | 1938 |
| Maya | Takao-class Heavy Cruiser | Japan | 1930 |
| McCall | Gridley-class Destroyer | United States | 1937 |
| McDougal | Porter-class Destroyer | United States | |
| McFarland | Clemson-class Destroyer | United States | 1920 |
| Memphis | Omaha-class Light Cruiser | United States | 1924 |
| Menhaden | Balao-class Submarine | United States | 1944 |
| Mero | Balao-class Submarine | United States | 1945 |
| Miami | Cleveland-class Light Cruiser | United States | 1942 |
| Michel | No Classification | Germany | 1939 |
| Michishio | Asashio-class Destroyer | Japan | 1937 |
| Mikazuki | Mutsuki-class Destroyer | Japan | 1926 |
| Mikuma | Mogami-class Heavy Cruiser | Japan | 1934 |
| Milfoil | Flower-class Corvette | United Kingdom | 1942 |
| Milwaukee | Omaha-class Light Cruiser | United States | 1921 |
| Minegumo | Asashio-class Destroyer | Japan | 1938 |
| Mingo | Gato-class Submarine | United States | 1942 |
| Minneapolis | New Orleans-class Heavy Cruiser | United States | 1933 |
| Minquan | No Classification | China | 1929 |
| Mircea | Gorch Fock-class Barque | Germany | 1938 |
| Mississippi | New Mexico-class Battleship | United States | 1917 |
| Missouri | Iowa-class Battleship | United States | 1944 |
| Mitragliero | Soldati-class Destroyer | Italy | |
| Mocenigo | Marcello-class Submarine | Italy | |
| Mogami | Mogami-class Heavy Cruiser | Japan | 1934 |
| Molotov | Kirov-class Light Cruiser | Russia | 1939 |
| Monaghan | Farragut-class Destroyer | United States | 1935 |
| Montcalm | La Galissonnière-class Light Cruiser | France | 1935 |
| Monterey | Independence-class Light Carrier | United States | 1943 |
| Montevideo Maru | No Classification | Japan | |
| Montpelier | Cleveland-class Light Cruiser | United States | 1942 |
| Moray | Balao-class Submarine | United States | |
| Morosini | Marcello-class Submarine | Italy | 1938 |
| MT-class Summary Information | MT-class Motor Torpedo Boat | Italy | |
| Mugford | Bagley-class Destroyer | United States | 1936 |
| Murasame | Shiratsuyu-class Destroyer | Japan | 1937 |
| Musashi | Yamato-class Battleship | Japan | 1940 |
| Muskallunge | Gato-class Submarine | United States | |
| Mutsu | Nagato-class Battleship | Japan | 1920 |
| Mutsuki | Mutsuki-class Destroyer | Japan | 1926 |
| Myoko | Myoko-class Heavy Cruiser | Japan | 1927 |
| Möwe | 1923-class Motor Torpedo Boat | Germany | 1926 |
| N | No Classification | Germany | |
| N (Planned) | H-class Battleship | Germany | 1943 (Projected, not actual) |
| N (Planned) | M-class Light Cruiser | Germany | 1942 (Projected, not actual) |
| N (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| N2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| Nachi | Myoko-class Heavy Cruiser | Japan | 1927 |
| Nagara | Nagara-class Light Cruiser | Japan | 1922 |
| Nagato | Nagato-class Battleship | Japan | 1919 |
| Nagatsuki | Mutsuki-class Destroyer | Japan | 1927 |
| Naka | Sendai-class Light Cruiser | Japan | 1925 |
| Nani | Marcello-class Submarine | Italy | |
| Narvalo | Squalo-class Submarine | Italy | |
| Narwhal | Narwhal-class Submarine | United States | |
| Nashville | Brooklyn-class Light Cruiser | United States | 1937 |
| Natoma Bay | Casablanca-class Escort Carrier | United States | 1943 |
| Natori | Nagara-class Light Cruiser | Japan | 1922 |
| Nautilus | Narwhal-class Submarine | United States | 1930 |
| Nehenta Bay | Casablanca-class Escort Carrier | United States | |
| Nelson | Nelson-class Battleship | United Kingdom | 1925 |
| Neptune | Leander-class Light Cruiser | United Kingdom | 1933 |
| Nevada | Nevada-class Battleship | United States | 1914 |
| New Jersey | Iowa-class Battleship | United States | 1942 |
| New Mexico | New Mexico-class Battleship | United States | 1917 |
| New Orleans | New Orleans-class Heavy Cruiser | United States | 1933 |
| New York | New York-class Battleship | United States | 1912 |
| Newcastle | Town-class Light Cruiser | United Kingdom | 1936 |
| Nichelio | Acciaio-class Submarine | Italy | |
| Nicholas | Fletcher-class Destroyer | United States | 1942 |
| Ninghai | Ninghai-class Light Cruiser | China | 1931 |
| Nisshin | Nisshin-class Seaplane Carrier | Japan | 1939 |
| No. 101/103-class Summary Information | No. 101/103-class Landing Ship | Japan | |
| Nordmark | Dithmarschen-class Auxiliary | Germany | 1937 |
| North Carolina | North Carolina-class Battleship | United States | 1940 |
| Northampton | Northampton-class Heavy Cruiser | United States | 1929 |
| Noshiro | Agano-class Light Cruiser | Japan | 1942 |
| Nymphe | No Classification | Germany | |
| Nürnberg | Leipzig-class Light Cruiser | Germany | 1934 |
| O (Planned) | O-class Battlecruiser | Germany | 1941 (Projected, not actual) |
| O (Planned) | M-class Light Cruiser | Germany | 1943 (Projected, not actual) |
| O (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| O'Brien | Sims-class Destroyer | United States | 1939 |
| O2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| Oberon | O-class Submarine | United Kingdom | 1926 |
| Oi | Kuma-class Light Cruiser | Japan | 1920 |
| Oklahoma | Nevada-class Battleship | United States | |
| Ommaney Bay | Casablanca-class Escort Carrier | United States | 1943 |
| Onami | Yugumo-class Destroyer | Japan | |
| Onice | Perla-class Submarine | Italy | |
| Oregon | Indiana-class Battleship | United States | 1893 |
| Orion | No Classification | Germany | 1930 |
| Orzel | Orzel-class Submarine | Poland | 1938 |
| Oshio | Asashio-class Destroyer | Japan | |
| Ostmark | No Classification | Germany | 1936 |
| Otaria | Glauco-class Submarine | Italy | |
| Otto Wünsche | Wilhelm Bauer-class Submarine Tender | Germany | 1940 |
| Oyodo | Oyodo-class Light Cruiser | Japan | 1942 |
| P (Planned) | O-class Battlecruiser | Germany | 1941 (Projected, not actual) |
| P (Planned) | M-class Light Cruiser | Germany | 1943 (Projected, not actual) |
| P (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| P1 (Planned) | P-class Heavy Cruiser | Germany | 1943 (Projected, not actual) |
| P10 (Planned) | P-class Heavy Cruiser | Germany | 1944 (Projected, not actual) |
| P11 (Planned) | P-class Heavy Cruiser | Germany | 1944 (Projected, not actual) |
| P12 (Planned) | P-class Heavy Cruiser | Germany | 1945 (Projected, not actual) |
| P2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| P2 (Planned) | P-class Heavy Cruiser | Germany | 1942 (Projected, not actual) |
| P3 (Planned) | P-class Heavy Cruiser | Germany | 1944 (Projected, not actual) |
| P4 (Planned) | P-class Heavy Cruiser | Germany | 1942 (Projected, not actual) |
| P5 (Planned) | P-class Heavy Cruiser | Germany | 1943 (Projected, not actual) |
| P6 (Planned) | P-class Heavy Cruiser | Germany | 1945 (Projected, not actual) |
| P7 (Planned) | P-class Heavy Cruiser | Germany | 1945 (Projected, not actual) |
| P8 (Planned) | P-class Heavy Cruiser | Germany | 1945 (Projected, not actual) |
| P9 (Planned) | P-class Heavy Cruiser | Germany | 1944 (Projected, not actual) |
| Paddle | Gato-class Submarine | United States | |
| Pampanito | Balao-class Submarine | United States | |
| Panay | No Classification | United States | |
| Papanikolis | Katsonis-class Submarine | Greece | |
| Parche | Balao-class Submarine | United States | 1943 |
| Pargo | Gato-class Submarine | United States | |
| Parizhskava Kommuna | Gangut-class Battleship | Russia | 1911 |
| Pasadena | Cleveland-class Light Cruiser | United States | 1943 |
| Pennsylvania | Pennsylvania-class Battleship | United States | 1915 |
| Pensacola | Pensacola-class Heavy Cruiser | United States | 1929 |
| Perch (Balao-class) | Balao-class Submarine | United States | |
| Perch (Porpoise-class) | Porpoise-class Submarine | United States | 1936 |
| Perla | Perla-class Submarine | Italy | |
| Permit | Porpoise-class Submarine | United States | 1936 |
| Perth | Leander-class Light Cruiser | Australia | 1934 |
| Peto | Gato-class Submarine | United States | |
| Petrof Bay | Casablanca-class Escort Carrier | United States | 1944 |
| Philip | Fletcher-class Destroyer | United States | 1942 |
| Phoenix | Brooklyn-class Light Cruiser | United States | 1938 |
| Pickerel | Porpoise-class Submarine | United States | 1936 |
| Picking | Fletcher-class Destroyer | United States | 1943 |
| Picuda | Balao-class Submarine | United States | |
| Pietro Calvi | Calvi-class Submarine | Italy | |
| Pike | Porpoise-class Submarine | United States | |
| Pilotfish | Balao-class Submarine | United States | |
| Pinghai | Ninghai-class Light Cruiser | China | 1935 |
| Pinguin | No Classification | Germany | 1936 |
| Pintado | Balao-class Submarine | United States | 1943 |
| Pipefish | Balao-class Submarine | United States | |
| Piper | Balao-class Submarine | United States | |
| Piranha | Balao-class Submarine | United States | 1943 |
| Plaice | Balao-class Submarine | United States | 1943 |
| Platino | Acciaio-class Submarine | Italy | |
| Plunger | Porpoise-class Submarine | United States | |
| Pogy | Gato-class Submarine | United States | 1942 |
| Pola | Zara-class Heavy Cruiser | Italy | |
| Pollack | Porpoise-class Submarine | United States | 1936 |
| Pomfret | Balao-class Submarine | United States | |
| Pomodon | Tench-class Submarine | United States | |
| Pompano | Porpoise-class Submarine | United States | |
| Pompon | Gato-class Submarine | United States | 1942 |
| Porfido | Acciaio-class Submarine | Italy | |
| Porpoise | Porpoise-class Submarine | United States | |
| Porter | Porter-class Destroyer | United States | 1935 |
| Portland | Portland-class Heavy Cruiser | United States | 1932 |
| Preston (Fletcher-class) | Fletcher-class Destroyer | United States | 1943 |
| Preston (Mahan-class) | Mahan-class Destroyer | United States | 1936 |
| Prichett | Fletcher-class Destroyer | United States | 1943 |
| Primauguet | Duguay-Trouin-class Light Cruiser | France | 1924 |
| Prince of Wales | King George V (1939)-class Battleship | United Kingdom | |
| Princeton | Independence-class Light Carrier | United States | 1942 |
| Pringle | Fletcher-class Destroyer | United States | 1942 |
| Prinz Eugen | Admiral Hipper-class Heavy Cruiser | Germany | 1938 |
| Proteus | Fulton-class Submarine Tender | United States | 1942 |
| Provana | Marcello-class Submarine | Italy | |
| Provence | Bretagne-class Battleship | France | 1913 |
| PT-class Summary Information | PT-class Motor Torpedo Boat | United States | |
| Puffer | Gato-class Submarine | United States | 1942 |
| Q (Planned) | O-class Battlecruiser | Germany | 1942 (Projected, not actual) |
| Q (Planned) | M-class Light Cruiser | Germany | 1943 (Projected, not actual) |
| Q (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| Q2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| Queen Elizabeth | Queen Elizabeth-class Battleship | United Kingdom | 1913 |
| Queen Elizabeth | No Classification | United Kingdom | 1938 |
| Queen Mary | No Classification | United Kingdom | 1934 |
| Queenfish | Balao-class Submarine | United States | |
| Quillback | Tench-class Submarine | United States | |
| Quincy (Baltimore-class) | Baltimore-class Heavy Cruiser | United States | |
| Quincy (New Orleans-class) | New Orleans-class Heavy Cruiser | United States | 1935 |
| R (Planned) | M-class Light Cruiser | Germany | 1943 (Projected, not actual) |
| R (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| R-1 | R-class Submarine | United States | 1918 |
| R-14 | R-class Submarine | United States | 1919 |
| R-3/P511 | R-class Submarine | United Kingdom | |
| R-5 | R-class Submarine | United States | 1918 |
| R-7 | R-class Submarine | United States | |
| R2 (Planned) | M2-class Light Cruiser | Germany | 1947 (Projected, not actual) |
| Raleigh | Omaha-class Light Cruiser | United States | |
| Rall | Evarts-class Destroyer Escort | United States | 1943 |
| Ralph Talbot | Bagley-class Destroyer | United States | 1936 |
| Randolph | Essex-class Aircraft Carrier | United States | 1944 |
| Ranger | Ranger-class Aircraft Carrier | United States | 1933 |
| Rasher | Gato-class Submarine | United States | |
| Raton | Gato-class Submarine | United States | |
| Rawalpindi | R-class Merchant Vessel | United Kingdom | 1925 |
| Ray | Gato-class Submarine | United States | 1943 |
| Razorback | Balao-class Submarine | United States | |
| Redfin | Gato-class Submarine | United States | |
| Redfish | Balao-class Submarine | United States | |
| Reginaldo Giuliani | Liuzzi-class Submarine | Italy | |
| Renown | Renown-class Battlecruiser | United Kingdom | |
| Renraku-tei-class Summary Information | Renraku-tei-class Motor Torpedo Boat | Japan | |
| Renshaw | Fletcher-class Destroyer | United States | 1942 |
| Repulse | Renown-class Battlecruiser | United Kingdom | |
| Resolution | Revenge-class Battleship | United Kingdom | |
| Reuben James | Clemson-class Destroyer | United States | 1919 |
| Richelieu | Richelieu-class Battleship | France | 1939 |
| Richthofen | Hans Albrecht Wedel-class Seaplane Tender | Germany | 1942 |
| Ro-58 | Type L3-class Submarine | Japan | 1922 |
| Robalo | Gato-class Submarine | United States | |
| Rock | Gato-class Submarine | United States | 1943 |
| Rodney | Nelson-class Battleship | United Kingdom | 1925 |
| Roma | Vittorio Veneto-class Battleship | Italy | 1940 |
| Roncador | Balao-class Submarine | United States | |
| Ronquil | Balao-class Submarine | United States | |
| Royal Sovereign | Revenge-class Battleship | United Kingdom | 1915 |
| Runner (Gato-class) | Gato-class Submarine | United States | 1942 |
| Runner (Tench-class) | Tench-class Submarine | United States | |
| Ryuho | Ryuho-class Aircraft Carrier | Japan | 1933 |
| Ryujo | Ryujo-class Aircraft Carrier | Japan | 1931 |
| S-18 | S-class Submarine | United States | 1920 |
| S-23 | S-class Submarine | United States | 1920 |
| S-25/Jastrzab | S-class Submarine | Poland | 1922 |
| S-26 | S-class Submarine | United States | |
| S-27 | S-class Submarine | United States | 1922 |
| S-28 | S-class Submarine | United States | 1922 |
| S-29/P556 | S-class Submarine | United Kingdom | 1922 |
| S-30 | S-class Submarine | United States | 1918 |
| S-31 | S-class Submarine | United States | 1918 |
| S-32 | S-class Submarine | United States | 1919 |
| S-33 | S-class Submarine | United States | 1918 |
| S-34 | S-class Submarine | United States | 1919 |
| S-35 | S-class Submarine | United States | 1919 |
| S-36 | S-class Submarine | United States | 1919 |
| S-37 | S-class Submarine | United States | 1919 |
| S-38 | S-class Submarine | United States | 1919 |
| S-39 | S-class Submarine | United States | 1919 |
| S-40 | S-class Submarine | United States | 1921 |
| S-41 | S-class Submarine | United States | 1921 |
| S-42 | S-class Submarine | United States | |
| S-43 | S-class Submarine | United States | 1923 |
| S-44 | S-class Submarine | United States | 1923 |
| S-45 | S-class Submarine | United States | 1923 |
| S-46 | S-class Submarine | United States | 1923 |
| S-47 | S-class Submarine | United States | |
| S-7 | Srednyaya-class Submarine | Russia | 1937 |
| Saar | Saar-class Submarine Tender | Germany | 1934 |
| Sable | No Classification | United States | 1923 |
| Saginaw Bay | Casablanca-class Escort Carrier | United States | |
| Sailfish | Sargo-class Submarine | United States | |
| Saint Paul | Baltimore-class Heavy Cruiser | United States | 1944 |
| Sakawa | Agano-class Light Cruiser | Japan | 1944 |
| Salmon | Salmon-class Submarine | United States | 1937 |
| Salt Lake City | Pensacola-class Heavy Cruiser | United States | 1929 |
| San Diego | Atlanta-class Light Cruiser | United States | 1941 |
| San Francisco | New Orleans-class Heavy Cruiser | United States | |
| San Jacinto | Independence-class Light Carrier | United States | 1943 |
| San Juan | Atlanta-class Light Cruiser | United States | 1941 |
| Sanborn | Haskell-class Attack Transport | United States | 1944 |
| Sand Lance | Balao-class Submarine | United States | |
| Saratoga | Lexington-class Aircraft Carrier | United States | 1925 |
| Sargent Bay | Casablanca-class Escort Carrier | United States | 1944 |
| Sargo | Sargo-class Submarine | United States | 1938 |
| Saufley | Fletcher-class Destroyer | United States | 1942 |
| Saury | Sargo-class Submarine | United States | 1938 |
| Savo Island | Casablanca-class Escort Carrier | United States | 1943 |
| Sawfish | Gato-class Submarine | United States | 1942 |
| Scabbardfish | Balao-class Submarine | United States | |
| Scamp | Gato-class Submarine | United States | |
| Scharnhorst | Gneisenau-class Battlecruiser | Germany | 1936 |
| Schlesien | Deutschland-class Battleship | Germany | 1906 |
| Schleswig-Holstein | Deutschland-class Battleship | Germany | 1906 |
| Schnellboot-class Summary Information | Schnellboot-class Motor Torpedo Boat | Germany | |
| Schwabenland | No Classification | Germany | 1925 |
| Scirè | Adua-class Submarine | Italy | 1938 |
| Scorpion | Gato-class Submarine | United States | 1942 |
| Sculpin | Sargo-class Submarine | United States | |
| Sea Cat | Balao-class Submarine | United States | 1944 |
| Sea Devil | Balao-class Submarine | United States | |
| Sea Dog | Balao-class Submarine | United States | |
| Sea Fox | Balao-class Submarine | United States | |
| Sea Owl | Balao-class Submarine | United States | |
| Sea Poacher | Balao-class Submarine | United States | |
| Sea Robin | Balao-class Submarine | United States | 1944 |
| Seadragon | Sargo-class Submarine | United States | |
| Seahorse | Balao-class Submarine | United States | 1943 |
| Seal | Salmon-class Submarine | United States | 1937 |
| Sealion (Balao-class) | Balao-class Submarine | United States | |
| Sealion (Sargo-class) | Sargo-class Submarine | United States | 1939 |
| Searaven | Sargo-class Submarine | United States | 1939 |
| Seawolf | Sargo-class Submarine | United States | |
| Seeadler | 1923-class Motor Torpedo Boat | Germany | 1926 |
| Segundo | Balao-class Submarine | United States | 1944 |
| Seisho Maru | No Classification | Japan | 1918 |
| Sendai | Sendai-class Light Cruiser | Japan | 1923 |
| Sennet | Balao-class Submarine | United States | 1944 |
| Settsu | Kawachi-class Battleship | Japan | 1911 |
| Seydlitz | Admiral Hipper-class Heavy Cruiser | Germany | 1939 |
| Shad | Gato-class Submarine | United States | 1942 |
| Shamrock Bay | Casablanca-class Escort Carrier | United States | 1944 |
| Shangri-La | Essex-class Aircraft Carrier | United States | 1944 |
| Shark (Balao-class) | Balao-class Submarine | United States | 1943 |
| Shark (Porpoise-class) | Porpoise-class Submarine | United States | 1935 |
| Shaw | Mahan-class Destroyer | United States | 1935 |
| ShCh-205 | Shchuka-class Submarine | Russia | 1934 |
| ShCh-307 | Shchuka-class Submarine | Russia | 1934 |
| ShCh-317 | Shchuka-class Submarine | Russia | 1935 |
| ShCh-320 | Shchuka-class Submarine | Russia | 1935 |
| ShCh-324 | Shchuka-class Submarine | Russia | 1935 |
| ShCh-401 | Shchuka-class Submarine | Russia | 1935 |
| Shigure | Shiratsuyu-class Destroyer | Japan | 1936 |
| Shimakaze | Shimakaze-class Destroyer | Japan | 1942 |
| Shinano | Shinano-class Aircraft Carrier | Japan | 1944 |
| Shinyo | Shinyo-class Escort Carrier | Japan | |
| Shinyo Maru | No Classification | Japan | |
| Shinyo-class Summary Information | Shinyo-class Motor Torpedo Boat | Japan | |
| Shoho | Zuiho-class Light Carrier | Japan | 1935 |
| Shokaku | Shokaku-class Aircraft Carrier | Japan | 1939 |
| Siluro a Lenta Corsa-class Summary Information | Siluro a Lenta Corsa-class Midget Submarine | Italy | |
| Silversides | Gato-class Submarine | United States | 1941 |
| Sims | Sims-class Destroyer | United States | 1939 |
| Skate | Balao-class Submarine | United States | |
| Skipjack | Salmon-class Submarine | United States | 1937 |
| Smalley | Fletcher-class Destroyer | United States | 1943 |
| Snapper | Salmon-class Submarine | United States | |
| Snook | Gato-class Submarine | United States | 1942 |
| Sokrushitelnyi | Gnevny-class Destroyer | Russia | 1936 |
| Soryu | Soryu-class Aircraft Carrier | Japan | 1935 |
| South Dakota | South Dakota-class Battleship | United States | 1941 |
| Soya | No Classification | Japan | 1937 |
| SP1 | Spähkreuzer 1938-class Scout Cruiser | Germany | |
| SP10 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1944 (Projected, not actual) |
| SP11 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1944 (Projected, not actual) |
| SP12 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1944 (Projected, not actual) |
| SP13 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1945 (Projected, not actual) |
| SP14 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1945 (Projected, not actual) |
| SP15 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1945 (Projected, not actual) |
| SP16 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP17 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP18 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP19 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP2 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1942 (Projected, not actual) |
| SP20 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP21 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP22 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1946 (Projected, not actual) |
| SP3 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1944 (Projected, not actual) |
| SP4 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1943 (Projected, not actual) |
| SP5 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1943 (Projected, not actual) |
| SP6 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1943 (Projected, not actual) |
| SP7 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1943 (Projected, not actual) |
| SP8 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1944 (Projected, not actual) |
| SP9 (Planned) | Spähkreuzer 1938-class Scout Cruiser | Germany | 1943 (Projected, not actual) |
| Spadefish | Balao-class Submarine | United States | |
| Spearfish | Sargo-class Submarine | United States | 1938 |
| Spencer | Treasury-class USCG Cutter | United States | 1937 |
| Spikefish | Balao-class Submarine | United States | |
| Spot | Balao-class Submarine | United States | 1944 |
| Springer | Balao-class Submarine | United States | 1944 |
| Sproston | Fletcher-class Destroyer | United States | 1942 |
| Squalo | Squalo-class Submarine | Italy | |
| St. Louis | St. Louis-class Light Cruiser | United States | 1938 |
| Steamer Bay | Casablanca-class Escort Carrier | United States | 1944 |
| Steelhead | Gato-class Submarine | United States | |
| Stephen Hopkins | Liberty-class Merchant Vessel | United States | 1942 |
| Sterlet | Balao-class Submarine | United States | 1943 |
| Stewart | Clemson-class Destroyer | United States | 1920 |
| Stickleback | Balao-class Submarine | United States | |
| Stier | No Classification | Germany | 1936 |
| Stingray | Salmon-class Submarine | United States | |
| Stord | S-class Destroyer | Norway | 1943 |
| Strasbourg | Dunkerque-class Battleship | France | 1936 |
| Stuart | Scott-class Destroyer | Australia | 1918 |
| Sturgeon | Salmon-class Submarine | United States | |
| Suffren | Suffren-class Heavy Cruiser | France | 1927 |
| Sunfish (Gato-class) | Gato-class Submarine | United States | 1942 |
| Sunfish (S-class) | S-class Submarine | United Kingdom | 1936 |
| Suzukaze | Shiratsuyu-class Destroyer | Japan | |
| Suzuya | Mogami-class Heavy Cruiser | Japan | 1934 |
| Swordfish | Sargo-class Submarine | United States | |
| Sydney | Leander-class Light Cruiser | Australia | 1934 |
| T1 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T10 | 1935-class Motor Torpedo Boat | Germany | 1939 |
| T11 | 1935-class Motor Torpedo Boat | Germany | 1939 |
| T12 | 1935-class Motor Torpedo Boat | Germany | 1939 |
| T13 | 1937-class Motor Torpedo Boat | Germany | 1939 |
| T14 | 1937-class Motor Torpedo Boat | Germany | 1939 |
| T15 | 1937-class Motor Torpedo Boat | Germany | 1939 |
| T16 | 1937-class Motor Torpedo Boat | Germany | 1939 |
| T17 | 1937-class Motor Torpedo Boat | Germany | 1940 |
| T18 | 1937-class Motor Torpedo Boat | Germany | 1940 |
| T19 | 1937-class Motor Torpedo Boat | Germany | 1940 |
| T2 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T20 | 1937-class Motor Torpedo Boat | Germany | 1940 |
| T21 | 1937-class Motor Torpedo Boat | Germany | 1940 |
| T22 | 1939-class Motor Torpedo Boat | Germany | |
| T23 | 1939-class Motor Torpedo Boat | Germany | 1941 |
| T24 | 1939-class Motor Torpedo Boat | Germany | 1941 |
| T25 | 1939-class Motor Torpedo Boat | Germany | 1941 |
| T26 | 1939-class Motor Torpedo Boat | Germany | 1942 |
| T27 | 1939-class Motor Torpedo Boat | Germany | 1942 |
| T28 | 1939-class Motor Torpedo Boat | Germany | 1942 |
| T29 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T3 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T30 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T31 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T32 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T33 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T34 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T35 | 1939-class Motor Torpedo Boat | Germany | 1943 |
| T36 | 1939-class Motor Torpedo Boat | Germany | 1944 |
| T37 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T38 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T39 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T4 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T40 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T41 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T42 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T43 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T44 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T45 | 1941-class Motor Torpedo Boat | Germany | 1944 |
| T46 | 1941-class Motor Torpedo Boat | Germany | |
| T47 | 1941-class Motor Torpedo Boat | Germany | |
| T48 | 1941-class Motor Torpedo Boat | Germany | |
| T5 | 1935-class Motor Torpedo Boat | Germany | 1937 |
| T50 | 1941-class Motor Torpedo Boat | Germany | |
| T51 | 1941-class Motor Torpedo Boat | Germany | |
| T52 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T53 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T54 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T55 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T56 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T57 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T58 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T59 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T6 | 1935-class Motor Torpedo Boat | Germany | 1937 |
| T60 (Planned) | 1944-class Motor Torpedo Boat | Germany | |
| T7 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T8 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| T9 | 1935-class Motor Torpedo Boat | Germany | 1938 |
| Tabberer | John C. Butler-class Destroyer Escort | United States | 1944 |
| Taiho | Taiho-class Aircraft Carrier | Japan | 1943 |
| Taiyo | Taiyo-class Escort Carrier | Japan | 1940 |
| Takao | Takao-class Heavy Cruiser | Japan | 1930 |
| Takasago Maru | No Classification | Japan | |
| Tama | Kuma-class Light Cruiser | Japan | 1920 |
| Tamalpais | Escambia-class | United States | 1944 |
| Tambor | Tambor-class Submarine | United States | |
| Tang | Balao-class Submarine | United States | 1943 |
| Tanga | Tanga-class Tender | Germany | 1937 |
| Tanikaze | Kagero-class Destroyer | Japan | 1940 |
| Tarpon | Porpoise-class Submarine | United States | |
| Tatsuta | Tenryu-class Light Cruiser | Japan | 1918 |
| Tatsuta Maru | No Classification | Japan | 1929 |
| Tautog | Tambor-class Submarine | United States | 1940 |
| Tench | Tench-class Submarine | United States | |
| Tennessee | Tennessee-class Battleship | United States | 1919 |
| Tenryu | Tenryu-class Light Cruiser | Japan | 1918 |
| Texas | New York-class Battleship | United States | 1912 |
| Thor | No Classification | Germany | 1938 |
| Thorn | Gleaves-class Destroyer | United States | 1943 |
| Thornback | Tench-class Submarine | United States | |
| Thornycroft-class Summary Information | Thornycroft-class Motor Launch | United Kingdom | |
| Threadfin | Balao-class Submarine | United States | |
| Thresher | Tambor-class Submarine | United States | |
| Thunderbolt | T-class Submarine | United Kingdom | 1938 |
| Ticonderoga | Essex-class Aircraft Carrier | United States | 1944 |
| Tiger | 1924-class Motor Torpedo Boat | Germany | 1928 |
| Tigrone | Tench-class Submarine | United States | |
| Tilawa | No Classification | United Kingdom | 1924 |
| Tilefish | Balao-class Submarine | United States | |
| Tinosa | Gato-class Submarine | United States | 1942 |
| Tirante | Tench-class Submarine | United States | 1944 |
| Tirpitz | Bismarck-class Battleship | Germany | 1939 |
| Togo / Coronel | No Classification | Germany | 1938 |
| Tone | Tone-class Heavy Cruiser | Japan | 1937 |
| Tongji | Tongji-class Light Cruiser | China | |
| Torsk | Tench-class Submarine | United States | |
| Tourville | Duquesne-class Heavy Cruiser | France | |
| Toyama Maru | No Classification | Japan | |
| Tranquility | Haven-class Hospital Ship | United States | 1944 |
| Trento | Trento-class Heavy Cruiser | Italy | 1927 |
| Trepang | Balao-class Submarine | United States | 1944 |
| Tribune | T-class Submarine | United Kingdom | 1938 |
| Tricheco | Squalo-class Submarine | Italy | |
| Trieste | Trento-class Heavy Cruiser | Italy | 1926 |
| Trigger | Gato-class Submarine | United States | |
| Trillium | Flower-class Corvette | Canada | 1940 |
| Triton | Tambor-class Submarine | United States | |
| Trout | Tambor-class Submarine | United States | |
| Trutta | Tench-class Submarine | United States | |
| Tsingtau | Tsingtau-class Tender | Germany | 1934 |
| Tsushima Maru | No Classification | Japan | |
| Tucker | Mahan-class Destroyer | United States | 1936 |
| Tullibee | Gato-class Submarine | United States | |
| Tuna | Tambor-class Submarine | United States | |
| Tunny | Gato-class Submarine | United States | 1942 |
| Turchese | Perla-class Submarine | Italy | |
| Tuscaloosa | New Orleans-class Heavy Cruiser | United States | 1933 |
| Type B-class Summary Information | Type B-class Midget Submarine | Japan | |
| Type C-class Summary Information | Type C-class Midget Submarine | Japan | |
| Type D-class Summary Information | Type D-class Midget Submarine | Japan | |
| Type XXVII-class Summary Information | Type XXVII-class Midget Submarine | Germany | |
| U-1 | Type II-class Submarine | Germany | 1935 |
| U-10 | Type II-class Submarine | Germany | 1935 |
| U-100 | Type VII-class Submarine | Germany | 1940 |
| U-101 | Type VII-class Submarine | Germany | 1940 |
| U-1011 | Type VII-class Submarine | Germany | |
| U-102 | Type VII-class Submarine | Germany | 1940 |
| U-103 | Type IX-class Submarine | Germany | 1940 |
| U-104 | Type IX-class Submarine | Germany | 1940 |
| U-105 | Type IX-class Submarine | Germany | 1940 |
| U-1059 | Type VII-class Submarine | Germany | 1943 |
| U-106 | Type IX-class Submarine | Germany | 1940 |
| U-107 | Type IX-class Submarine | Germany | 1940 |
| U-108 | Type IX-class Submarine | Germany | 1940 |
| U-109 | Type IX-class Submarine | Germany | 1940 |
| U-11 | Type II-class Submarine | Germany | 1935 |
| U-110 | Type IX-class Submarine | Germany | 1940 |
| U-111 | Type IX-class Submarine | Germany | 1940 |
| U-112 (Planned) | Type XI-class Submarine | Germany | |
| U-113 (Planned) | Type XI-class Submarine | Germany | |
| U-1133 | Type VII-class Submarine | Germany | |
| U-1134 | Type VII-class Submarine | Germany | |
| U-1135 | Type VII-class Submarine | Germany | |
| U-114 (Planned) | Type XI-class Submarine | Germany | |
| U-115 (Planned) | Type XI-class Submarine | Germany | |
| U-116 | Type X-class Minelaying Submarine | Germany | |
| U-117 | Type X-class Minelaying Submarine | Germany | |
| U-118 | Type X-class Minelaying Submarine | Germany | |
| U-119 | Type X-class Minelaying Submarine | Germany | |
| U-12 | Type II-class Submarine | Germany | 1935 |
| U-120 | Type II-class Submarine | Germany | 1940 |
| U-121 | Type II-class Submarine | Germany | 1940 |
| U-122 | Type IX-class Submarine | Germany | 1939 |
| U-123 | Type IX-class Submarine | Germany | 1940 |
| U-1233 | Type IX-class Submarine | Germany | 1943 |
| U-1234 | Type IX-class Submarine | Germany | 1944 |
| U-1235 | Type IX-class Submarine | Germany | |
| U-1239 | Type IX-class Submarine | Germany | |
| U-124 | Type IX-class Submarine | Germany | 1940 |
| U-1240 | Type IX-class Submarine | Germany | |
| U-125 | Type IX-class Submarine | Germany | 1940 |
| U-126 | Type IX-class Submarine | Germany | |
| U-127 | Type IX-class Submarine | Germany | |
| U-128 | Type IX-class Submarine | Germany | |
| U-1280 | Type VII-class Submarine | Germany | |
| U-1282 | Type VII-class Submarine | Germany | |
| U-129 | Type IX-class Submarine | Germany | |
| U-13 | Type II-class Submarine | Germany | 1935 |
| U-130 | Type IX-class Submarine | Germany | |
| U-131 | Type IX-class Submarine | Germany | |
| U-132 | Type VII-class Submarine | Germany | 1941 |
| U-133 | Type VII-class Submarine | Germany | |
| U-134 | Type VII-class Submarine | Germany | 1941 |
| U-135 | Type VII-class Submarine | Germany | 1941 |
| U-136 | Type VII-class Submarine | Germany | 1941 |
| U-137 | Type II-class Submarine | Germany | 1940 |
| U-138 | Type II-class Submarine | Germany | 1940 |
| U-139 | Type II-class Submarine | Germany | 1940 |
| U-14 | Type II-class Submarine | Germany | 1935 |
| U-140 | Type II-class Submarine | Germany | 1940 |
| U-141 | Type II-class Submarine | Germany | 1940 |
| U-142 | Type II-class Submarine | Germany | 1940 |
| U-143 | Type II-class Submarine | Germany | 1940 |
| U-144 | Type II-class Submarine | Germany | 1940 |
| U-145 | Type II-class Submarine | Germany | 1940 |
| U-146 | Type II-class Submarine | Germany | 1940 |
| U-147 | Type II-class Submarine | Germany | 1940 |
| U-148 | Type II-class Submarine | Germany | 1940 |
| U-149 | Type II-class Submarine | Germany | 1940 |
| U-15 | Type II-class Submarine | Germany | 1936 |
| U-150 | Type II-class Submarine | Germany | 1940 |
| U-151 | Type II-class Submarine | Germany | 1940 |
| U-152 | Type II-class Submarine | Germany | 1940 |
| U-153 | Type IX-class Submarine | Germany | 1941 |
| U-154 | Type IX-class Submarine | Germany | 1941 |
| U-155 | Type IX-class Submarine | Germany | 1941 |
| U-156 | Type IX-class Submarine | Germany | 1941 |
| U-157 | Type IX-class Submarine | Germany | 1941 |
| U-158 | Type IX-class Submarine | Germany | 1941 |
| U-159 | Type IX-class Submarine | Germany | 1941 |
| U-16 | Type II-class Submarine | Germany | 1936 |
| U-160 | Type IX-class Submarine | Germany | |
| U-161 | Type IX-class Submarine | Germany | 1941 |
| U-162 | Type IX-class Submarine | Germany | 1941 |
| U-163 | Type IX-class Submarine | Germany | 1941 |
| U-164 | Type IX-class Submarine | Germany | 1941 |
| U-165 | Type IX-class Submarine | Germany | |
| U-166 | Type IX-class Submarine | Germany | 1941 |
| U-167 | Type IX-class Submarine | Germany | 1942 |
| U-168 | Type IX-class Submarine | Germany | 1942 |
| U-169 | Type IX-class Submarine | Germany | |
| U-17 | Type II-class Submarine | Germany | 1935 |
| U-170 | Type IX-class Submarine | Germany | |
| U-171 | Type IX-class Submarine | Germany | 1941 |
| U-172 | Type IX-class Submarine | Germany | 1941 |
| U-173 | Type IX-class Submarine | Germany | 1941 |
| U-174 | Type IX-class Submarine | Germany | 1941 |
| U-175 | Type IX-class Submarine | Germany | 1941 |
| U-176 | Type IX-class Submarine | Germany | 1941 |
| U-177 | Type IX-class Submarine | Germany | 1941 |
| U-178 | Type IX-class Submarine | Germany | 1941 |
| U-179 | Type IX-class Submarine | Germany | 1941 |
| U-18 | Type II-class Submarine | Germany | 1935 |
| U-180 | Type IX-class Submarine | Germany | 1941 |
| U-181 | Type IX-class Submarine | Germany | 1941 |
| U-182 | Type IX-class Submarine | Germany | 1942 |
| U-183 | Type IX-class Submarine | Germany | |
| U-184 | Type IX-class Submarine | Germany | 1942 |
| U-185 | Type IX-class Submarine | Germany | |
| U-186 | Type IX-class Submarine | Germany | |
| U-187 | Type IX-class Submarine | Germany | 1942 |
| U-188 | Type IX-class Submarine | Germany | 1942 |
| U-189 | Type IX-class Submarine | Germany | 1942 |
| U-19 | Type II-class Submarine | Germany | 1935 |
| U-190 | Type IX-class Submarine | Germany | 1942 |
| U-191 | Type IX-class Submarine | Germany | 1942 |
| U-192 | Type IX-class Submarine | Germany | |
| U-193 | Type IX-class Submarine | Germany | |
| U-194 | Type IX-class Submarine | Germany | |
| U-195 | Type IX-class Submarine | Germany | |
| U-196 | Type IX-class Submarine | Germany | |
| U-197 | Type IX-class Submarine | Germany | 1942 |
| U-198 | Type IX-class Submarine | Germany | 0000 |
| U-199 | Type IX-class Submarine | Germany | |
| U-2 | Type II-class Submarine | Germany | 1935 |
| U-20 | Type II-class Submarine | Germany | 1936 |
| U-200 | Type IX-class Submarine | Germany | |
| U-201 | Type VII-class Submarine | Germany | 1940 |
| U-202 | Type VII-class Submarine | Germany | 1941 |
| U-203 | Type VII-class Submarine | Germany | 1941 |
| U-204 | Type VII-class Submarine | Germany | 1941 |
| U-205 | Type VII-class Submarine | Germany | 1941 |
| U-206 | Type VII-class Submarine | Germany | 1941 |
| U-207 | Type VII-class Submarine | Germany | 1941 |
| U-208 | Type VII-class Submarine | Germany | 1941 |
| U-209 | Type VII-class Submarine | Germany | |
| U-21 | Type II-class Submarine | Germany | 1936 |
| U-210 | Type VII-class Submarine | Germany | |
| U-211 | Type VII-class Submarine | Germany | |
| U-212 | Type VII-class Submarine | Germany | |
| U-213 | Type VII-class Submarine | Germany | 1941 |
| U-214 | Type VII-class Submarine | Germany | 1941 |
| U-215 | Type VII-class Submarine | Germany | |
| U-216 | Type VII-class Submarine | Germany | |
| U-217 | Type VII-class Submarine | Germany | |
| U-218 | Type VII-class Submarine | Germany | |
| U-22 | Type II-class Submarine | Germany | 1936 |
| U-226 | Type VII-class Submarine | Germany | |
| U-228 | Type VII-class Submarine | Germany | |
| U-23 | Type II-class Submarine | Germany | 1936 |
| U-2321 | Type XXIII-class Submarine | Germany | |
| U-2322 | Type XXIII-class Submarine | Germany | |
| U-2323 | Type XXIII-class Submarine | Germany | |
| U-2324 | Type XXIII-class Submarine | Germany | |
| U-2325 | Type XXIII-class Submarine | Germany | |
| U-2326 | Type XXIII-class Submarine | Germany | |
| U-235 | Type VII-class Submarine | Germany | |
| U-238 | Type VII-class Submarine | Germany | |
| U-239 | Type VII-class Submarine | Germany | |
| U-24 | Type II-class Submarine | Germany | 1936 |
| U-240 | Type VII-class Submarine | Germany | |
| U-241 | Type VII-class Submarine | Germany | |
| U-249 | Type VII-class Submarine | Germany | |
| U-25 | Type I-class Submarine | Germany | 1936 |
| U-2501 | Type XXI-class Submarine | Germany | 1944 |
| U-251 | Type VII-class Submarine | Germany | |
| U-2549 | Type XXI-class Submarine | Germany | |
| U-26 | Type I-class Submarine | Germany | 1936 |
| U-27 | Type VII-class Submarine | Germany | 1936 |
| U-28 | Type VII-class Submarine | Germany | 1936 |
| U-287 | Type VII-class Submarine | Germany | |
| U-29 | Type VII-class Submarine | Germany | 1936 |
| U-3 | Type II-class Submarine | Germany | 1935 |
| U-30 | Type VII-class Submarine | Germany | 1936 |
| U-3001 | Type XXI-class Submarine | Germany | 1944 |
| U-3008 | Type XXI-class Submarine | Germany | 1944 |
| U-3009 | Type XXI-class Submarine | Germany | 1944 |
| U-3010 | Type XXI-class Submarine | Germany | 1944 |
| U-3011 | Type XXI-class Submarine | Germany | 1944 |
| U-3012 | Type XXI-class Submarine | Germany | 1944 |
| U-3013 | Type XXI-class Submarine | Germany | 1944 |
| U-3014 | Type XXI-class Submarine | Germany | 1944 |
| U-3015 | Type XXI-class Submarine | Germany | 1944 |
| U-3016 | Type XXI-class Submarine | Germany | 1944 |
| U-3017 | Type XXI-class Submarine | Germany | 1944 |
| U-3019 | Type XXI-class Submarine | Germany | 1944 |
| U-3036 | Type XXI-class Submarine | Germany | 1945 |
| U-3042 | Type XXI-class Submarine | Germany | |
| U-3043 | Type XXI-class Submarine | Germany | |
| U-3048 | Type XXI-class Submarine | Germany | |
| U-3049 | Type XXI-class Submarine | Germany | |
| U-3052 | Type XXI-class Submarine | Germany | |
| U-3053 | Type XXI-class Submarine | Germany | |
| U-3054 | Type XXI-class Submarine | Germany | |
| U-3055 | Type XXI-class Submarine | Germany | |
| U-3056 | Type XXI-class Submarine | Germany | |
| U-3057 | Type XXI-class Submarine | Germany | |
| U-3058 | Type XXI-class Submarine | Germany | |
| U-3059 | Type XXI-class Submarine | Germany | |
| U-3060 | Type XXI-class Submarine | Germany | |
| U-3061 | Type XXI-class Submarine | Germany | |
| U-3062 | Type XXI-class Submarine | Germany | |
| U-3063 | Type XXI-class Submarine | Germany | |
| U-31 | Type VII-class Submarine | Germany | 1936 |
| U-32 | Type VII-class Submarine | Germany | 1937 |
| U-33 | Type VII-class Submarine | Germany | 1936 |
| U-331 | Type VII-class Submarine | Germany | |
| U-332 | Type VII-class Submarine | Germany | |
| U-333 | Type VII-class Submarine | Germany | |
| U-334 | Type VII-class Submarine | Germany | |
| U-34 | Type VII-class Submarine | Germany | 1936 |
| U-35 | Type VII-class Submarine | Germany | 1936 |
| U-3504 | Type XXI-class Submarine | Germany | |
| U-3505 | Type XXI-class Submarine | Germany | |
| U-3510 | Type XXI-class Submarine | Germany | |
| U-3511 | Type XXI-class Submarine | Germany | |
| U-3512 | Type XXI-class Submarine | Germany | |
| U-3515 | Type XXI-class Submarine | Germany | |
| U-3516 | Type XXI-class Submarine | Germany | |
| U-3517 | Type XXI-class Submarine | Germany | |
| U-3518 | Type XXI-class Submarine | Germany | |
| U-3519 | Type XXI-class Submarine | Germany | |
| U-3520 | Type XXI-class Submarine | Germany | |
| U-3521 | Type XXI-class Submarine | Germany | |
| U-3522 | Type XXI-class Submarine | Germany | |
| U-3523 | Type XXI-class Submarine | Germany | |
| U-3524 | Type XXI-class Submarine | Germany | |
| U-3525 | Type XXI-class Submarine | Germany | |
| U-3526 | Type XXI-class Submarine | Germany | |
| U-3527 | Type XXI-class Submarine | Germany | |
| U-3528 | Type XXI-class Submarine | Germany | |
| U-3535 | Type XXI-class Submarine | Germany | |
| U-3536 | Type XXI-class Submarine | Germany | |
| U-3537 | Type XXI-class Submarine | Germany | |
| U-3538 | Type XXI-class Submarine | Germany | |
| U-3539 | Type XXI-class Submarine | Germany | |
| U-3540 | Type XXI-class Submarine | Germany | |
| U-3541 | Type XXI-class Submarine | Germany | |
| U-3542 | Type XXI-class Submarine | Germany | |
| U-36 | Type VII-class Submarine | Germany | 1936 |
| U-37 | Type IX-class Submarine | Germany | 1938 |
| U-373 | Type VII-class Submarine | Germany | |
| U-38 | Type IX-class Submarine | Germany | 1938 |
| U-382 | Type VII-class Submarine | Germany | |
| U-39 | Type IX-class Submarine | Germany | 1938 |
| U-4 | Type II-class Submarine | Germany | 1935 |
| U-40 | Type IX-class Submarine | Germany | 1938 |
| U-401 | Type VII-class Submarine | Germany | |
| U-402 | Type VII-class Submarine | Germany | |
| U-403 | Type VII-class Submarine | Germany | |
| U-41 | Type IX-class Submarine | Germany | 1939 |
| U-42 | Type IX-class Submarine | Germany | 1939 |
| U-43 | Type IX-class Submarine | Germany | 1939 |
| U-44 | Type IX-class Submarine | Germany | 1939 |
| U-442 | Type VII-class Submarine | Germany | |
| U-45 | Type VII-class Submarine | Germany | 1938 |
| U-452 | Type VII-class Submarine | Germany | |
| U-453 | Type VII-class Submarine | Germany | |
| U-454 | Type VII-class Submarine | Germany | |
| U-459 | Type XIV-class Cargo Submarine | Germany | |
| U-46 | Type VII-class Submarine | Germany | 1938 |
| U-460 | Type XIV-class Cargo Submarine | Germany | |
| U-461 | Type XIV-class Cargo Submarine | Germany | |
| U-462 | Type XIV-class Cargo Submarine | Germany | |
| U-463 | Type XIV-class Cargo Submarine | Germany | |
| U-464 | Type XIV-class Cargo Submarine | Germany | |
| U-47 | Type VII-class Submarine | Germany | 1938 |
| U-4714 | Type XXIII-class Submarine | Germany | 1945 |
| U-48 | Type VII-class Submarine | Germany | 1939 |
| U-49 | Type VII-class Submarine | Germany | 1939 |
| U-491 | Type XIV-class Cargo Submarine | Germany | |
| U-492 | Type XIV-class Cargo Submarine | Germany | |
| U-493 | Type XIV-class Cargo Submarine | Germany | |
| U-494 | Type XIV-class Cargo Submarine | Germany | |
| U-5 | Type II-class Submarine | Germany | 1935 |
| U-50 | Type VII-class Submarine | Germany | 1939 |
| U-505 | Type IX-class Submarine | Germany | 1941 |
| U-51 | Type VII-class Submarine | Germany | 1938 |
| U-52 | Type VII-class Submarine | Germany | 1938 |
| U-53 | Type VII-class Submarine | Germany | 1939 |
| U-530 | Type IX-class Submarine | Germany | 1942 |
| U-537 | Type IX-class Submarine | Germany | |
| U-54 | Type VII-class Submarine | Germany | 1939 |
| U-55 | Type VII-class Submarine | Germany | 1939 |
| U-559 | Type VII-class Submarine | Germany | 1941 |
| U-56 | Type II-class Submarine | Germany | 1938 |
| U-57 | Type II-class Submarine | Germany | 1938 |
| U-575 | Type VII-class Submarine | Germany | 1941 |
| U-576 | Type VII-class Submarine | Germany | 1941 |
| U-577 | Type VII-class Submarine | Germany | 1941 |
| U-578 | Type VII-class Submarine | Germany | 1941 |
| U-58 | Type II-class Submarine | Germany | 1938 |
| U-59 | Type II-class Submarine | Germany | 1938 |
| U-6 | Type II-class Submarine | Germany | 1935 |
| U-60 | Type II-class Submarine | Germany | 1939 |
| U-61 | Type II-class Submarine | Germany | 1939 |
| U-62 | Type II-class Submarine | Germany | 1939 |
| U-63 | Type II-class Submarine | Germany | 1939 |
| U-64 | Type IX-class Submarine | Germany | 1939 |
| U-65 | Type IX-class Submarine | Germany | 1939 |
| U-66 | Type IX-class Submarine | Germany | 1940 |
| U-67 | Type IX-class Submarine | Germany | 1940 |
| U-68 | Type IX-class Submarine | Germany | 1940 |
| U-684 | Type VII-class Submarine | Germany | |
| U-685 | Type VII-class Submarine | Germany | |
| U-686 | Type VII-class Submarine | Germany | |
| U-687 | Type VII-class Submarine | Germany | |
| U-688 | Type VII-class Submarine | Germany | |
| U-689 | Type VII-class Submarine | Germany | |
| U-69 | Type VII-class Submarine | Germany | 1940 |
| U-7 | Type II-class Submarine | Germany | 1935 |
| U-70 | Type VII-class Submarine | Germany | 1940 |
| U-71 | Type VII-class Submarine | Germany | 1940 |
| U-72 | Type VII-class Submarine | Germany | 1940 |
| U-73 | Type VII-class Submarine | Germany | 1940 |
| U-736 | Type VII-class Submarine | Germany | |
| U-737 | Type VII-class Submarine | Germany | |
| U-738 | Type VII-class Submarine | Germany | |
| U-74 | Type VII-class Submarine | Germany | 1940 |
| U-745 | Type VII-class Submarine | Germany | |
| U-746 | Type VII-class Submarine | Germany | |
| U-75 | Type VII-class Submarine | Germany | 1940 |
| U-751 | Type VII-class Submarine | Germany | 1940 |
| U-752 | Type VII-class Submarine | Germany | 1941 |
| U-754 | Type VII-class Submarine | Germany | 1941 |
| U-76 | Type VII-class Submarine | Germany | 1940 |
| U-77 | Type VII-class Submarine | Germany | 1940 |
| U-78 | Type VII-class Submarine | Germany | 1940 |
| U-79 | Type VII-class Submarine | Germany | 1941 |
| U-8 | Type II-class Submarine | Germany | 1935 |
| U-80 | Type VII-class Submarine | Germany | 1941 |
| U-81 | Type VII-class Submarine | Germany | 1941 |
| U-82 | Type VII-class Submarine | Germany | 1941 |
| U-821 | Type VII-class Submarine | Germany | 1943 |
| U-822 | Type VII-class Submarine | Germany | 1944 |
| U-83 | Type VII-class Submarine | Germany | 1940 |
| U-84 | Type VII-class Submarine | Germany | 1941 |
| U-85 | Type VII-class Submarine | Germany | 1941 |
| U-86 | Type VII-class Submarine | Germany | 1941 |
| U-860 | Type IX-class Submarine | Germany | 1943 |
| U-869 | Type IX-class Submarine | Germany | 1943 |
| U-87 | Type VII-class Submarine | Germany | 1941 |
| U-88 | Type VII-class Submarine | Germany | 1941 |
| U-89 | Type VII-class Submarine | Germany | 1941 |
| U-9 | Type II-class Submarine | Germany | 1935 |
| U-90 | Type VII-class Submarine | Germany | 1941 |
| U-908 | Type VII-class Submarine | Germany | |
| U-91 | Type VII-class Submarine | Germany | 1941 |
| U-92 | Type VII-class Submarine | Germany | 1942 |
| U-922 | Type VII-class Submarine | Germany | |
| U-923 | Type VII-class Submarine | Germany | |
| U-924 | Type VII-class Submarine | Germany | |
| U-925 | Type VII-class Submarine | Germany | |
| U-926 | Type VII-class Submarine | Germany | |
| U-927 | Type VII-class Submarine | Germany | |
| U-928 | Type VII-class Submarine | Germany | |
| U-929 | Type VII-class Submarine | Germany | |
| U-93 | Type VII-class Submarine | Germany | 1940 |
| U-930 | Type VII-class Submarine | Germany | |
| U-931 | Type VII-class Submarine | Germany | |
| U-932 | Type VII-class Submarine | Germany | |
| U-94 | Type VII-class Submarine | Germany | 1940 |
| U-95 | Type VII-class Submarine | Germany | 1940 |
| U-96 | Type VII-class Submarine | Germany | 1940 |
| U-97 | Type VII-class Submarine | Germany | 1940 |
| U-977 | Type VII-class Submarine | Germany | 1943 |
| U-98 | Type VII-class Submarine | Germany | 1940 |
| U-99 | Type VII-class Submarine | Germany | 1940 |
| UA | Ay-class Submarine | Germany | 1938 |
| Unryu | Unryu-class Aircraft Carrier | Japan | 1943 |
| Unyo | Taiyo-class Escort Carrier | Japan | 1939 |
| Valiant | Queen Elizabeth-class Battleship | United Kingdom | 1914 |
| Vampire | V and W-class Destroyer | Australia | 1917 |
| Velite | Soldati-class Destroyer | Italy | |
| Vendetta | V and W-class Destroyer | Australia | 1917 |
| Veniero | Marcello-class Submarine | Italy | |
| Victorious | Illustrious-class Aircraft Carrier | United Kingdom | 1939 |
| Vincennes | New Orleans-class Heavy Cruiser | United States | 1936 |
| Vincenzo Gioberti | Oriani-class Destroyer | Italy | |
| Vittorio Alfieri | Oriani-class Destroyer | Italy | |
| Vittorio Veneto | Vittorio Veneto-class Battleship | Italy | 1937 |
| Volframio | Acciaio-class Submarine | Italy | |
| Voroshilov | Kirov-class Light Cruiser | Russia | 1937 |
| Väinämöinen | Väinämöinen-class Coastal Defense Ship | Finland | 1932 |
| Wahoo | Gato-class Submarine | United States | 1942 |
| Wake Island | Casablanca-class Escort Carrier | United States | 1943 |
| Waldemar Kophamel | Wilhelm Bauer-class Submarine Tender | Germany | 1939 |
| Waller | Fletcher-class Destroyer | United States | 1942 |
| Ward | Wickes-class Destroyer | United States | |
| Warspite | Queen Elizabeth-class Battleship | United Kingdom | 1913 |
| Washington | North Carolina-class Battleship | United States | 1940 |
| Wasp (Essex-class) | Essex-class Aircraft Carrier | United States | 1943 |
| Wasp (Wasp-class) | Wasp-class Aircraft Carrier | United States | 1939 |
| Waterhen | V and W-class Destroyer | Australia | 1918 |
| Wedderburn | Fletcher-class Destroyer | United States | 1943 |
| Weissesee | No Classification | Germany | |
| West Virginia | Colorado-class Battleship | United States | 1921 |
| Westcott | V and W-class Destroyer | United Kingdom | 1918 |
| Westfalen | No Classification | Germany | 1905 |
| Whale | Gato-class Submarine | United States | 1942 |
| Whitehall | V and W-class Destroyer | United Kingdom | 1919 |
| Wickes | Fletcher-class Destroyer | United States | 1942 |
| Widder | No Classification | Germany | 1929 |
| Wilhelm Bauer | Wilhelm Bauer-class Submarine Tender | Germany | 1938 |
| Wilhelm Gustloff | No Classification | Germany | 1937 |
| Wisconsin | Iowa-class Battleship | United States | 1943 |
| Wolf | 1924-class Motor Torpedo Boat | Germany | 1927 |
| Wolverine | No Classification | United States | |
| X-class Summary Information | X-class Midget Submarine | United Kingdom | |
| Yahagi | Agano-class Light Cruiser | Japan | 1942 |
| Yamagumo | Asashio-class Destroyer | Japan | 1938 |
| Yamashiro | Fuso-class Battleship | Japan | 1915 |
| Yamato | Yamato-class Battleship | Japan | 1940 |
| Yingrui | Zhaohe-class Protected Cruiser | China | 1911 |
| York | York-class Heavy Cruiser | United Kingdom | 1928 |
| Yorktown (Essex-class) | Essex-class Aircraft Carrier | United States | 1943 |
| Yorktown (Yorktown-class) | Yorktown-class Aircraft Carrier | United States | 1936 |
| Young | Fletcher-class Destroyer | United States | 1942 |
| Yubari | Yubari-class Light Cruiser | Japan | 1923 |
| Yugure | Hatsuharu-class Destroyer | Japan | 1934 |
| Yukikaze | Kagero-class Destroyer | Japan | 1939 |
| Yura | Nagara-class Light Cruiser | Japan | 1922 |
| Yuzuki | Mutsuki-class Destroyer | Japan | 1927 |
| Z1 Leberecht Maass | 1934-class Destroyer | Germany | 1935 |
| Z10 Hans Lody | 1934A-class Destroyer | Germany | 1936 |
| Z11 Bernd Von Arnim | 1934A-class Destroyer | Germany | 1936 |
| Z12 Erich Giese | 1934A-class Destroyer | Germany | 1937 |
| Z13 Erich Koellner | 1934A-class Destroyer | Germany | 1937 |
| Z14 Friedrich Ihn | 1934A-class Destroyer | Germany | 1935 |
| Z15 Erich Steinbrinck | 1934A-class Destroyer | Germany | 1936 |
| Z16 Friedrich Eckholdt | 1934A-class Destroyer | Germany | 1937 |
| Z17 Diether von Roeder | 1936-class Destroyer | Germany | 1937 |
| Z18 Hans Ludemann | 1936-class Destroyer | Germany | 1937 |
| Z19 Hermann Kunne | 1936-class Destroyer | Germany | 1937 |
| Z2 Georg Thiele | 1934-class Destroyer | Germany | 1935 |
| Z20 Karl Galster | 1936-class Destroyer | Germany | 1938 |
| Z21 Wilhelm Heidkamp | 1936-class Destroyer | Germany | 1938 |
| Z22 Anton Schmitt | 1936-class Destroyer | Germany | 1938 |
| Z23 | 1936A-class Destroyer | Germany | 1939 |
| Z24 | 1936A-class Destroyer | Germany | 1940 |
| Z25 | 1936A-class Destroyer | Germany | 1940 |
| Z26 | 1936A-class Destroyer | Germany | 1940 |
| Z27 | 1936A-class Destroyer | Germany | 1940 |
| Z28 | 1936A-class Destroyer | Germany | 1940 |
| Z29 | 1936A-class Destroyer | Germany | 1940 |
| Z3 Max Schultz | 1934-class Destroyer | Germany | 1935 |
| Z30 | 1936A-class Destroyer | Germany | 1940 |
| Z31 | 1936A (Mob)-class Destroyer | Germany | 1941 |
| Z32 | 1936A (Mob)-class Destroyer | Germany | 1941 |
| Z33 | 1936A (Mob)-class Destroyer | Germany | 1941 |
| Z34 | 1936A (Mob)-class Destroyer | Germany | 1942 |
| Z35 | 1936B-class Destroyer | Germany | 1942 |
| Z36 | 1936B-class Destroyer | Germany | 1943 |
| Z37 | 1936A (Mob)-class Destroyer | Germany | 1942 |
| Z38 | 1936A (Mob)-class Destroyer | Germany | 1941 |
| Z39 | 1936A (Mob)-class Destroyer | Germany | 1941 |
| Z4 Richard Beitzen | 1934-class Destroyer | Germany | 1935 |
| Z40 (Planned) | 1936B-class Destroyer | Germany | |
| Z41 (Planned) | 1936B-class Destroyer | Germany | |
| Z42 (Planned) | 1936B-class Destroyer | Germany | |
| Z43 | 1936B-class Destroyer | Germany | 1943 |
| Z44 | 1936B-class Destroyer | Germany | 1944 |
| Z45 | 1936B-class Destroyer | Germany | |
| Z46 | 1936C-class Destroyer | Germany | |
| Z47 | 1936C-class Destroyer | Germany | |
| Z48 (Planned) | 1936C-class Destroyer | Germany | |
| Z49 (Planned) | 1936C-class Destroyer | Germany | |
| Z5 Paul Jacobi | 1934A-class Destroyer | Germany | 1936 |
| Z50 (Planned) | 1936C-class Destroyer | Germany | |
| Z51 | 1942-class Destroyer | Germany | 1944 |
| Z52 | 1944-class Destroyer | Germany | |
| Z53 | 1944-class Destroyer | Germany | |
| Z54 | 1944-class Destroyer | Germany | |
| Z55 | 1944-class Destroyer | Germany | |
| Z56 | 1944-class Destroyer | Germany | |
| Z57 (Planned) | 1944-class Destroyer | Germany | |
| Z58 (Planned) | 1944-class Destroyer | Germany | |
| Z6 Theodor Riedel | 1934A-class Destroyer | Germany | 1936 |
| Z7 Hermann Schoemann | 1934A-class Destroyer | Germany | 1936 |
| Z8 Bruno Heinemann | 1934A-class Destroyer | Germany | 1936 |
| Z9 Wolfgang Zenker | 1934A-class Destroyer | Germany | 1936 |
| Zara | Zara-class Heavy Cruiser | Italy | 1930 |
| Zhaohe | Zhaohe-class Protected Cruiser | China | 1911 |
| Zuiho | Zuiho-class Light Carrier | Japan | 1936 |
| Zuikaku | Shokaku-class Aircraft Carrier | Japan | 1939 |
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