Enlistment district
| Name | Details |
|---|---|
| Thorbjørn Olsen | Born April 7, 1920 in Porsgrunn |
| Jernbark Ophelia | Build year 1863 |
| Brigg Ophir | Build year 1875 |
| Bark Ophir | Build year 1876 |
| D/S Oscar | Build year 1888 |
| Harald Osdalen | Born May 19, 1921 in Holla |
| Bark Osmond | Build year 1877 |
| D/S Ottar | Build year 1908 |
| D/S Ottawa | Build year 1906 |
| Bark Pallas | Build year 1858 |
| Bark Paulus | Build year 1875 |
| Bark Paulus | Build year 1874 |
| Arne Johan Pedersen | Born December 7, 1921 in Porsgrunn |
| Ingvald Andreas Pedersen | Born August 24, 1886 in Bamble |
| Bark Pericles | Build year 1877 |
| Bark Petrellen | Build year 1854 |
| Skonnertskip Planet | Build year 1878 |
| Bark Pløen | Build year 1864 |
| Bark Polykarp | Build year 1880 |
| D/S Pors | Build year 1905 |
| D/S Pors | Build year 1899 |
| M/S Pors | Build year 1941 |
| D/S Pors | Build year 1915 |
| Jernfullrigger Protector | Build year 1886 |
| Bark Protector | Build year 1864 |