Enlistment district
| Name | Details |
|---|---|
| Arne Aresen Omre | Born January 22, 1913 in Vestre Moland |
| Brigg Omulation | |
| Sofus Omundsen | Born October 24, 1879 in Vestre Moland |
| Opreisningen | |
| Sjalupp Ora et Labora | Build year 17?? |
| Galeas Ora et Labora | |
| Skip Ora et Labora | |
| Brigg Orion | Build year 1806 |
| Bark Orion | Build year 1849 |
| Bark Orion | Build year 1886 |
| Nils Jørgen Ortiniussen | Born 1850 in Heløy |
| Ortinius Severin Ortiniussen | Born 1861 in Heløy |
| Slettopper Orton | Build year 1832 |
| Skonnert Orton | Build year 1842 |
| Brigg Orvarodd | Build year 1857 |
| Skonnert - Brigg Oscar | Build year 1831 |
| Oscar | |
| Bent Osmundsen | Born December 31, 1837 in Østerøy, Vestre Moland |
| Gregers Osmundsen | Born 1736 in Sangereid |
| Hans Jacob Osmundsen | Born October 4, 1853 in Lillesand |
| John Osmundsen | Born 1784 in Brekkestø |
| Knud Osmundsen | Born 1794 in Brekkestø |
| Paul Osmundsen | Born 1818 in Kristiansand |
| Knud Osuldsen | Lived in Østre Vallesverd |
| Olaf Osuldsen | Born 1894 in Østre Valesverd |