| Name | Class | Country | Year of Launch |
| O (Planned) | M-class Light Cruiser | Germany | 1945 (Projected, not actual) |
| O (Planned) | O-class Battlecruiser | Germany | 1941 (Projected, not actual) |
| O (Planned) | M-class Light Cruiser | Germany | 1943 (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 | |
| 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 |
| Otto Wünsche | Otto Wünsche-class Submarine Tender | Germany | 1940 |
| Oyodo | Oyodo-class Light Cruiser | Japan | 1942 |
Search WW2DB & Partner Sites
News
- » WW2DB's 16th Anniversary (29 Dec 2020)
- » Hidekazu Tamura shared his feelings toward his war time internment (2 Sep 2020)
- » WW2DB's 15th Anniversary (29 Dec 2019)
- » Japan and Russia to continue negotiations on the Kuriles territorial dispute (22 Nov 2019)
- » Wreck of Akagi Found (21 Oct 2019)
- » Wreck of Kaga Found (18 Oct 2019)
- » See all news
Current Site Statistics
- » 1,094 biographies
- » 332 events
- » 38,156 timeline entries
- » 1,127 ships
- » 337 aircraft models
- » 190 vehicle models
- » 352 weapon models
- » 117 historical documents
- » 225 facilities
- » 464 book reviews
- » 27,162 photos
- » 351 maps
Famous WW2 Quote
"Goddam it, you'll never get the Purple Heart hiding in a foxhole! Follow me!"Captain Henry P. Jim Crowe, Guadalcanal, 13 Jan 1943
