We have so far registered 92,376 seafarers
| Name | Born | Place of birth (place of living shown if missing) | | Sigmund Olsen Oddsteen | September 27, 1913 | Born in Alvdal | |
| Otto-Jacob Offenberg | July 22, 1914 | Born in Gjøvik | |
| Reidar Bøferfeldt Oftedahl | May 9, 1892 | Born in Løiten | |
| Erling Sæter Olander | October 18, 1918 | Born in Trondheim | |
| Odd Rom Olaussen | October 15, 1922 | Born in Vang, Hedemark | |
| Erling Gunelius Olsen | June 26, 1908 | Born in Kristiansand | |
| Ole Olsen | September 21, 1910 | Born in Hjellum St, pr. Hamar | |
| Oskar Olsen | November 24, 1912 | Born in Ringsaker | |
| Rolf Håvard Olsen | March 15, 1923 | Born in Vang, Hedmark | |
| Bjarne Theodor Olstad | November 7, 1918 | Born in Hamar | |
| Oscar Høegh Omdahl | August 29, 1908 | Born in Ringsaker | |
| Helge Opseth | December 27, 1910 | Lived in Roverud st. | |
| Julius Johannessen Opåsen | December 23, 1916 | Born in Hof | |
| Edvard Osa | March 6, 1891 | Born in Kongsvinger | |
| Asbjørn Erik Oscarsen | September 12, 1923 | Born in Hamar | |
| Karl Johan Oscarsen | December 12, 1908 | Born in Hamar | |
| Gunnar Lorang Oskarsen | November 9, 1923 | Born in Vang, Hedmark | |
| Otto Oskarsen | November 17, 1920 | Born in Hamar | |
| Harald Pedersen | December 29, 1885 | Born in Hamar | |
| Sverre Pedersen | May 25, 1921 | Born in Hamar | |
| Axel Pettersen | January 19, 1890 | Born in Feiring | |
| Hjalmar Pettersen | January 15, 1897 | Born in Kristiansand | |
| Lars Johan Pettersen | September 7, 1918 | Born in Hamar | |
| Ole Pettersen | March 13, 1902 | Lived in Hole, Vang, Hamar | |
| Sven Prag | November 22, 1913 | Born in Hamar | |