harbour
| Name | Details |
|---|---|
| Ole Jørgen Olsen | Born May 25, 1886 in Oddernes |
| Ole Martin Olsen | Born June 25, 1892 in Søndeled |
| Ole Martin Olsen | Born January 1, 1921 in Onsøy |
| Otto Olsen | Born May 2, 1895 in Stokke |
| Ove Olsen | Born June 21, 1907 in Tønsberg |
| Peder Olsen | Born February 8, 1894 in Hof |
| Peder Olsen | Born March 30, 1901 in Trondheim |
| Peder Ernst Apall Olsen | Born January 29, 1910 in Dypvåg |
| Reidar Oliver Olsen | Born April 15, 1920 in Røyken |
| Einar Olsen Rivelsrud | Born July 2, 1907 in Hof |
| Rolf Olav Tangen Olsen | Born June 7, 1919 in Horten |
| Rolf Prydz Olsen | Born September 29, 1914 in Tønsberg |
| Lars Olsen Stenbakken | Born November 24, 1896 in Skåtøy, Kragerø |
| Sverre Olsen | Born December 31, 1917 in Nøtterøy |
| Tjøstolv Olsen | Born November 11, 1903 in Øiestad |
| Tomas Jørgen Olsen | Born in Risør |
| Trygve Olsen | Born January 5, 1904 in Risør |
| Trygve Olsen | Born August 22, 1919 in Sandar |
| Svend Ommundsen | Born September 13, 1893 in Søndeled |
| Karl Opmal | Born November 17, 1888 in Tønsberg |
| M/T Orator | Build year 1953 |
| Johan Arnt Ormestad | Born August 26, 1916 in Ramnes |
| Petter Andreas Emilsen Ormlie | Born May 22, 1897 in Mo i Rana |
| Sverre Orseth | Born April 2, 1912 in Kristiansund |
| D/S Orwell | Build year 1897 |