harbour
| Name | Details |
|---|---|
| M/S Odin Viking | Build year 1982 |
| M/S Odin Viking | Build year 2003 |
| Gustav Oftedal | Born January 26, 1917 in Halse |
| Bark Ohr | Build year 1868 |
| D/S Oksø | Build year 1873 |
| D/S Olaf Kyrre | Build year 1867 |
| Carl Victor Olafsen | Born December 3, 1888 in Risør |
| Odin Angel Olafsen | Born July 23, 1917 in Jøssund |
| Egil Meier Olaussen | Born August 23, 1921 in Hadsel |
| Knut Olavsen | Born June 30, 1917 in Oddernes |
| M/S Olav Viking | Build year 1975 |
| Brigg Olga | Build year 1852 |
| Oscar Emil Oliegreen | Born December 19, 1891 in Kristiansand |
| Trygve Oliegreen | Born February 10, 1915 in Oddernes |
| Sigurd Kjell Olimstad | Born June 14, 1937 in Ottersland, Austre Moland |
| Stålbark 4 master Olivebank | Build year 1892 |
| Bark Olivia | Build year 1892 |
| M/S Olsen | Build year 1990 |
| Adolf Olsen | Born May 17, 1879 in Tvedestrand |
| Alf Olsen | Born August 4, 1923 in Mandal |
| Anders Olsen | Born November 25, 1898 in Vardø |
| Anders Hilder Olsen | Born November 11, 1869 in Eide sogn |
| Andreas Olsen | Born December 17, 1838 in Høvaag |
| Andreas Olsen | Born December 15, 1900 |
| Andreas Evald Olsen | Born June 14, 1902 in Dypvåg |