# List of ships of World War II (I)

The List of ships of the Second World War contains major military vessels of the war, arranged alphabetically and by type. The list includes armed vessels that served during the war and in the immediate aftermath, inclusive of localized ongoing combat operations, garrison surrenders, post-surrender occupation, colony re-occupation, troop and prisoner repatriation, to the end of 1945. For smaller vessels, see also list of World War II ships of less than 1000 tons. Some uncompleted Axis ships are included, out of historic interest. Ships are designated to the country under which they operated for the longest period of the Second World War, regardless of where they were built or previous service history. Submarines show submerged displacement.
Click on headers to sort column alphabetically.
List of ships of World War II (I) :
| Ship | Country or organization | Class | Type | Displacement (tons) | First commissioned | Fate |
| I-1 | Imperial Japanese Navy | Type J1 | cruiser submarine | 2,791 | 10 March 1926 | wrecked 29 January 1943 |
| I-2 | Imperial Japanese Navy | Type J1 | cruiser submarine | 2,791 | 24 July 1926 | sunk 7 April 1944 |
| I-3 | Imperial Japanese Navy | Type J1 | cruiser submarine | 2,791 | 30 November 1926 | sunk 9 December 1942 |
| I-4 | Imperial Japanese Navy | Type J1 | cruiser submarine | 2,791 | 24 December 1929 | sunk 21 December 1942 |
| I-5 | Imperial Japanese Navy | Type J1 Modified | submarine aircraft carrier | 2,921 | 31 July 1932 | sunk 19 July 1944 |
| I-6 | Imperial Japanese Navy | Type J2 | submarine aircraft carrier | 2,921 | 15 May 1935 | sunk 16 June 1944 |
| I-7 | Imperial Japanese Navy | Type J3 | submarine aircraft carrier | 3,583 | 31 March 1937 | wrecked 22 June 1943 |
| I-8 | Imperial Japanese Navy | Type J3 | submarine aircraft carrier | 3,583 | 5 December 1938 | sunk 31 March 1945 |
| I-9 | Imperial Japanese Navy | Type A1 | submarine aircraft carrier | 4,129 | 13 February 1941 | sunk 13 June 1943 |
| I-10 | Imperial Japanese Navy | Type A1 | submarine aircraft carrier | 4,129 | 31 October 1941 | sunk 4 July 1944 |
| I-11 | Imperial Japanese Navy | Type A1 | submarine aircraft carrier | 4,129 | 16 May 1942 | missing after 11 January 1944 |
| I-12 | Imperial Japanese Navy | Type A2 | submarine | 4,150 | 25 May 1944 | sunk 13 November 1944 |
| I-13 | Imperial Japanese Navy | Type A3 | submarine aircraft carrier | 4,762 | 16 December 1944 | sunk 16 July 1945 |
| I-14 | Imperial Japanese Navy | Type A3 | submarine aircraft carrier | 4,762 | 14 March 1945 | sunk as target 28 May 1946 |
| I-15 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 30 September 1940 | sunk 10 November 1942 |
| I-16 | Imperial Japanese Navy | Type C1 | midget submarine-carrying submarine | 3,561 | 30 March 1940 | sunk 19 May 1944 |
| I-17 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 24 January 1941 | sunk 19 August 1943 |
| I-18 | Imperial Japanese Navy | Type C1 | midget submarine-carrying submarine | 3,561 | 31 January 1941 | sunk 11 February 1943 |
| I-19 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 28 April 1941 | sunk 25 November 1943 |
| I-20 | Imperial Japanese Navy | Type C1 | midget submarine-carrying submarine | 3,561 | 26 September 1940 | missing after 31 August 1943 |
| I-21 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 15 July 1941 | sunk 29 November 1943 |
| I-22 | Imperial Japanese Navy | Type C1 | midget submarine-carrying submarine | 3,561 | 10 March 1941 | sunk 6 October 1942 |
| I-23 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 27 September 1941 | missing after 24 February 1942 |
| I-24 | Imperial Japanese Navy | Type C1 | midget submarine-carrying submarine | 3,561 | 31 October 1941 | sunk 1 June 1943 |
| I-25 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 15 October 1941 | sunk 3 September 1943 |
| I-26 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 6 November 1941 | sunk 26 October 1944 |
| I-27 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 24 February 1942 | sunk 12 February 1944 |
| I-28 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 6 February 1942 | sunk 17 May 1942 |
| I-29 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 27 February 1942 | sunk 26 July 1944 |
| I-30 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 28 February 1942 | sunk 13 October 1942 |
| I-31 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 30 May 1942 | sunk 13 May 1943 |
| I-32 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 26 April 1942 | sunk 24 March 1944 |
| I-33 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 26 April 1942 | sank in diving accident 13 June 1944 |
| I-34 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 31 August 1942 | sunk 13 November 1943 |
| I-35 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 31 August 1942 | sunk 23 November 1943 |
| I-36 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 30 September 1942 | scuttled 1 April 1946 |
| I-37 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 10 March 1943 | sunk 19 November 1944 |
| I-38 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 31 January 1943 | sunk 13 November 1944 |
| I-39 | Imperial Japanese Navy | Type B1 | submarine aircraft carrier | 3,654 | 22 April 1943 | missing after 25 November 1943 |
| I-40 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 31 July 1943 | missing after 22 November 1943 |
| I-41 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 18 September 1943 | sunk 18 November 1944 |
| I-42 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 3 November 1943 | sunk 23 March 1944 |
| I-43 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 5 November 1943 | sunk 15 February 1944 |
| I-44 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 31 January 1944 | missing April 1945 |
| I-45 | Imperial Japanese Navy | Type B2 | submarine | 3,700 | 28 December 1943 | sunk 29 October 1944 |
| I-46 | Imperial Japanese Navy | Type C2 | submarine | 3,621 | 29 February 1944 | missing October 1944 |
| I-47 | Imperial Japanese Navy | Type C2 | submarine | 3,621 | 10 July 1944 | scuttled 1 April 1946 |
| I-48 | Imperial Japanese Navy | Type C2 | submarine | 3,621 | 5 September 1944 | sunk 23 January 1945 |
| I-52 | Imperial Japanese Navy | Type C3 | transport submarine | 3,644 | 28 December 1943 | sunk 24 June 1944 |
| I-53 | Imperial Japanese Navy | Type C3 | submarine | 3,644 | 20 February 1944 | scuttled 1 April 1946 |
| I-54 | Imperial Japanese Navy | Type B3 | submarine aircraft carrier | 3,747 | 31 March 1944 | missing after 23 October 1944 |
| I-55 | Imperial Japanese Navy | Type C3 | transport submarine | 3,644 | 20 April 1944 | missing after 13 July 1944 |
| I-56 | Imperial Japanese Navy | Type B3 | submarine aircraft carrier | 3,747 | 8 June 1944 | missing April 1945 |
| I-58 | Imperial Japanese Navy | Type B3 | submarine aircraft carrier | 3,747 | 7 September 1944 | scuttled 1 April 1946 |
| I-60 | Imperial Japanese Navy | KD3 type | cruiser submarine | 2,300 | 24 December 1929 | sunk 17 January 1942 |
| I-64 | Imperial Japanese Navy | KD4 type | cruiser submarine | 2,300 | 30 August 1930 | sunk 17 May 1942 |
| I-70 | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 9 November 1935 | sunk 10 December 1941 |
| I-73 | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 7 January 1937 | sunk 27 January 1942 |
| I-121 (ex-I-21) | Imperial Japanese Navy | Kiraisen type | minelayer submarine | 1,768 | 31 March 1927 | scuttled 30 April 1946 |
| I-122 (ex-I-22) | Imperial Japanese Navy | Kiraisen type | minelayer submarine | 1,768 | 28 October 1928 | sunk 10 June 1945 |
| I-123 (ex-I-23) | Imperial Japanese Navy | Kiraisen type | minelayer submarine | 1,768 | 28 April 1928 | sunk 29 August 1942 |
| I-124 (ex-I-24) | Imperial Japanese Navy | Kiraisen type | minelayer submarine | 1,768 | 10 December 1928 | sunk 20 January 1942 |
| I-152 (ex-I-52) | Imperial Japanese Navy | KD2 type | training submarine | 2,500 | 1 November 1924 | Scrapped 1946–1948 |
| I-153 (ex-I-53) | Imperial Japanese Navy | KD3A type | submarine | 2,300 | 30 March 1927 | Scuttled May 1946 |
| I-154 (ex-I-54) | Imperial Japanese Navy | KD3A type | submarine | 2,300 | 15 December 1927 | Scuttled May 1946 |
| I-155 (ex-I-55) | Imperial Japanese Navy | KD3A type | submarine | 2,300 | 5 September 1927 | Scuttled 8 May 1946 |
| I-156 (ex-I-56) | Imperial Japanese Navy | KD3B type | submarine | 2,300 | 31 March 1929 | Scuttled 1 April 1946 |
| I-157 (ex-I-57) | Imperial Japanese Navy | KD3B type | submarine | 2,300 | 15 May 1928 | Scuttled 1 April 1946 |
| I-158 (ex-I-58) | Imperial Japanese Navy | KD3A type | submarine | 2,300 | 24 December 1929 | Scuttled 1 April 1946 |
| I-159 (ex-I-59) | Imperial Japanese Navy | KD3B type | submarine | 2,300 | 31 March 1930 | Scuttled 1 April 1946 |
| I-162 (ex-I-62) | Imperial Japanese Navy | KD4 type | submarine | 2,300 | 24 April 1930 | Scuttled 1 April 1946 |
| I-165 (ex-I-65) | Imperial Japanese Navy | KD5 type | submarine | 2,330 | 1 December 1932 | Sunk 27 June 1945 |
| I-166 (ex-I-66) | Imperial Japanese Navy | KD5 type | submarine | 2,330 | 10 November 1932 | Sunk 17 July 1944 |
| I-168 (ex-I-68) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 31 July 1934 | Sunk 27 July 1943 |
| I-169 (ex-I-69) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 28 September 1935 | Sank in diving accident 4 April 1944 |
| I-171 (ex-I-71) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 24 December 1935 | Sunk 1 February 1944 |
| I-172 (ex-I-72) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 7 January 1937 | Sunk October–November 1942 |
| I-174 (ex-I-74) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 15 August 1938 | Sunk 12 April 1944 |
| I-175 (ex-I-75) | Imperial Japanese Navy | KD6 type | cruiser submarine | 2,440 | 8 December 1938 | Sunk 4 February 1944 |
| I-176 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 4 August 1942 | Sunk 16 May 1944 |
| I-177 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 28 December 1942 | Sunk 3 October 1944 |
| I-178 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 26 December 1942 | Missing June 1943 |
| I-179 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 18 June 1943 | Sank accidentally 14 July 1944 |
| I-180 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 15 January 1943 | Sunk 27 April 1944 |
| I-181 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 24 May 1943 | Wrecked 16 January 1944 |
| I-182 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 10 May 1943 | Sunk 1 September 1944 |
| I-183 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 3 October 1943 | Sunk 29 April 1944 |
| I-184 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 15 October 1943 | Sunk 19 June 1944 |
| I-185 | Imperial Japanese Navy | KD7 type | cruiser submarine | 2,602 | 23 September 1943 | Sunk 22 June 1944 |
| I-201 | Imperial Japanese Navy | Sentaka type | submarine | 1,479 | 2 February 1945 | sunk as target 23 May 1946 |
| I-202 | Imperial Japanese Navy | Sentaka type | submarine | 1,479 | 12 February 1945 | scuttled 5 April 1946 |
| I-203 | Imperial Japanese Navy | Sentaka type | submarine | 1,479 | 29 May 1945 | sunk as target 21 May 1946 |
| I-351 | Imperial Japanese Navy | Senho type | submarine tanker | 4,290 | 28 January 1945 | sunk 14 July 1945 |
| I-361 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 25 May 1944 | sunk 31 May 1945 |
| I-362 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 23 May 1944 | sunk 14 January 1945 |
| I-363 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 8 July 1944 | sunk 29 October 1945 |
| I-364 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 14 June 1944 | sunk 16 September 1944 |
| I-365 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 1 August 1944 | sunk 29 November 1944 |
| I-366 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 15 August 1944 | scuttled 1 April 1946 |
| I-367 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 3 August 1944 | scuttled 1 April 1946 |
| I-368 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 25 August 1944 | sunk 26 February 1945 |
| I-369 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 9 October 1944 | scrapped 1946 |
| I-370 | Imperial Japanese Navy | Type D1 | transport submarine/kaiten carrier | 2,215 | 4 September 1944 | sunk 26 February 1945 |
| I-371 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 2 October 1944 | missing February 1945 |
| I-372 | Imperial Japanese Navy | Type D1 | transport submarine | 2,215 | 8 November 1944 | sunk 18 July 1945 |
| I-373 | Imperial Japanese Navy | Type D2 | transport/tanker submarine | 2,240 | 14 April 1945 | sunk 14 August 1945 |
| I-400 | Imperial Japanese Navy | Sentoku type | submarine aircraft carrier | 6,560 | 30 December 1944 | sunk as target 4 June 1946 |
| I-401 | Imperial Japanese Navy | Sentoku type | submarine aircraft carrier | 6,560 | 8 January 1945 | sunk as target 31 May 1946 |
| I-402 | Imperial Japanese Navy | Sentoku type | submarine tanker | 6,560 | 24 July 1945 | scuttled 1 April 1946 |
| I-501 (ex-U-181) | Imperial Japanese Navy | Type IXD2 | submarine | 1,771 | 16 July 1945 | Scuttled 12 February 1946 |
| I-502 (ex-U-862) | Imperial Japanese Navy | Type IXD2 | submarine | 1,771 | 15 July 1945 | Scuttled 13 February 1946 |
| I-503 (ex-Comandante Cappellini, ex-UIT-24) | Imperial Japanese Navy | Marcello-class | submarine | 1,313 | 10 May 1945 | Scuttled 16 April 1946 |
| I-504 (ex-Luigi Torelli, ex-UIT-25) | Imperial Japanese Navy | Marconi-class | submarine | 1,400 | 10 May 1945 | Scuttled 16 April 1946 |
| I-505 (ex-U-219) | Imperial Japanese Navy | Type X | minelayer submarine | 2,143 | 15 July 1945 | Scuttled 3 February 1946 |
| I-506 (ex-U-195) | Imperial Japanese Navy | Type IXD1 | submarine | 1,771 | 15 July 1945 | Scuttled 15 February 1946 |
| Icarus | Royal Navy | I | minelayer destroyer | 1,370 | 3 May 1937 | paid off 29 August 1946, scrapped 29 October 1946. |
| Ierax | Hellenic Navy | Aetos | destroyer | 1,030 | 19 October 1912 | Decommissioned 1946 |
| Ilex | Royal Navy | I | minelayer destroyer | 1,370 | 7 July 1937 | paid off August, scrapped in Sicily 1948. |
| Illustrious | Royal Navy | Illustrious | aircraft carrier | 23,000 | 25 May 1940 | scrapped 1956 |
| Ilmarinen | Finland | Väinämöinen | coastal defence ship | 3,900 | 17 April 1934 | sunk 13 September 1941 |
| Iltis | Kriegsmarine | Raubtier | torpedo boat | 1,320 | 1 October 1928 | sunk 13 May 1942 |
| Imogen | Royal Navy | I | minelayer destroyer | 1,370 | 2 June 1937 | sunk in collision 16 July 1940 |
| Imperial | Royal Navy | I | minelayer destroyer | 1,370 | 30 June 1937 | sunk 29 May 1941 |
| Implacable | Royal Navy | Implacable | aircraft carrier | 23,825 | 28 August 1944 | scrapped 1955 |
| Impulsive | Royal Navy | I | minelayer destroyer | 1,370 | 29 January 1938 | paid off 1946, scrapped 22 January 1946. |
| Inch Arran | Royal Canadian Navy | River | frigate | 1,445 | 18 November 1944 | paid off 23 June 1965 |
| Indefatigable | Royal Navy | Implacable | aircraft carrier | 23,825 | 3 May 1944 | scrapped 1956 |
| Independence | United States Navy | Independence | light aircraft carrier | 11,000 | 14 January 1943 | decommissioned 28 August 1946, target ship scuttled 1951 |
| Independencia | Argentine Navy | Libertad | riverine battleship | 2,336 | 5 March 1892 | Stricken 1951 |
| Indiana | United States Navy | South Dakota | battleship | 35,000 | 30 April 1942 | decommissioned 11 September 1947, scrapped 1963 |
| Indianapolis | United States Navy | Portland | heavy cruiser | 9,800 | 15 November 1932 | sunk 30 July 1945 |
| Indomitable | Royal Navy | Illustrious | aircraft carrier | 23,000 | 10 October 1941 | scrapped 1955 |
| Indus | Royal Indian Navy | Grimsby | sloop | 1,210 | 15 March 1935 | sunk 6 April 1942 |
| Inglefield | Royal Navy | I | minelayer destroyer | 1,370 | 25 June 1937 | sunk 25 February 1944 |
| Ingolf | Royal Danish Navy | | patrol boat | 1,180 | 1934 | seized by Germany in August 1943, renamed Sleipner, later sunk in air raid |
| Ingraham | United States Navy | Gleaves | destroyer | 1,630 | 19 July 1941 | sunk 22 August 1942 |
| Intensity | United States Navy | Flower modified | corvette | 1,015 | 31 March 1943 | paid off 3 October 1945 |
| Intrepid | United States Navy | Essex | aircraft carrier | 27,100 | 16 August 1943 | decommissioned 15 March 1974, museum ship |
| Intrepid | Royal Navy | I | minelayer destroyer | 1,370 | 29 July 1937 | sunk 26 September 1943 |
| Investigator | Indian Navy | | survey ship | 1,572 | | decommissioned 1951, scrapped |
| Iowa | United States Navy | Iowa | battleship | 45,000 | 22 February 1943 | decommissioned 1990, museum |
| Irene Forsyte | United States Navy | | Q-ship | 283 | 26 August 1943 | 16 December 1943 |
| Iroquois | Royal Canadian Navy | Tribal | destroyer | 2,020 | 30 November 1942 | paid off 24 October 1962, scrapped 1966 |
| Isaac Sweers | Royal Netherlands Navy | Gerard Callenburgh | destroyer | 1,606 | 29 May 1941 | Sunk 13 November 1942 |
| Ise | Imperial Japanese Navy | Ise | dreadnought | 36,000 | 1917 | sunk 28 July 1945 |
| Isis | Royal Navy | I | minelayer destroyer | 1,370 | 2 June 1937 | sunk 20 July 1944. |
| Isuzu | Imperial Japanese Navy | Nagara | light cruiser | 5,088 | 15 August 1923 | Sunk 7 April 1945 |
| Ivanhoe | Royal Navy | I | minelayer destroyer | 1,370 | 24 August 1937 | sunk 1 September 1940 |
| Ivy | Royal Navy | Flower | corvette | 925 | | |
| Iwate | Imperial Japanese Navy | Izumo | armored cruiser | 9,750 | 18 March 1901 | sunk 26 July 1945 |
| Izumo | Imperial Japanese Navy | Izumo | armored cruiser | 9,750 | 25 September 1900 | sunk 24 July 1945 |