Enlistment district
| Name | Details |
|---|---|
| M/T Nueva Granada | Build year 1937 |
| D/S Nusken | Build year 1948 |
| M/S Nyco | Build year 1962 |
| D/S Nyco | Build year 1951 |
| Arne Marius Nygård | Born November 16, 1911 in Nes, Romerike |
| Brede Oluf Nylænder | Born April 23, 1918 in Sør Odal |
| M/S Nyx | Build year 1958 |
| D/S Oakland | Build year 1943 |
| D/T Oakley | Build year 1941 |
| M/S Oakville | Build year 1957 |
| M/S Obo Baron | Build year 1970 |
| M/S Obo Duke | Build year 1974 |
| M/S Obo Empress | Build year 1971 |
| M/S Obo King | Build year 1974 |
| M/S Obo Prince | Build year 1968 |
| M/S Obo Princess | Build year 1976 |
| M/S Obo Queen | Build year 1971 |
| M/S Ocean Commander | Build year 1975 |
| M/S Ocean Explorer | Build year 1971 |
| M/S Ocean Master | Build year 1965 |
| D/S Ocean Swell | Build year 1943 |
| M/T Ocean Trader | Build year 1955 |
| Vidar Johannes Anthonsen Odden | Born March 23, 1911 in Høvik, Bærum |
| D/S Oddernes | Build year 1921 |
| D/S Oddvar | Build year 1923 |