We have so far registered 92,376 seafarers
| Name | Born | Place of birth (place of living shown if missing) | | Sigurd Olsen | May 26, 1908 | Born in Moss | |
| Sigurd Oliver Olsen | April 8, 1899 | Born in Fredrikstad | |
| Sigurd Oman Olsen | February 7, 1893 | Born in Borge i Østfold | |
| Sven Aage Olsen | January 9, 1920 | Born in Larkollen/Rygge | |
| Sverre Olsen | August 4, 1923 | Born in Fredrikstad | |
| Sverre Johannes Olsen | September 5, 1916 | Born in Glemmen | |
| Sverre Winther Olsen | November 16, 1891 | Born in Halden | |
| Søren Oluf Olsen | May 13, 1899 | Born in Borge | |
| Theodor Olsen | November 27, 1845 | Born in Rødenæs prgj., Østfold | |
| Theodor Olsen | 1894 | Lived in Hvaler | |
| Tor Olsen | September 7, 1909 | Born in Sarpsborg | |
| Trygve Olsen | 1893 | Born in Fredrikstad | |
| Trygve Olsen | June 24, 1892 | Born in Glemmen | |
| Verner Olsen | October 12, 1901 | Born in Sverige | |
| Werner Knatinius Olsen | 1901 | Lived in Hvaler | |
| Wilhelm Henry Olsen | April 30, 1910 | Born in Sarpsborg | |
| Egil Olaf Olsson | June 28, 1922 | Born in Idd | |
| Rolf Omberg | August 8, 1924 | Born in Fredrikstad | |
| Helge Olaf Onanger | February 15, 1914 | Lived in Jeløy pr. Moss | |
| Marcus Onerød | April 4, 1906 | Born in Fredrikstad | |
| Leif Oskar Ophus | July 16, 1920 | Born in Siljan | |
| Sverre Kjell Opsahl | April 8, 1923 | Born in Sarpsborg | |
| Rolf Opøien | August 17, 1921 | Lived in Hagen i Askim | |
| Sverre Kristian Orefellen | March 19, 1920 | Born in Rygge | |
| Oskar Hilmar Orud | October 27, 1907 | Born in Sarpsborg | |