| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| M/B Olav (M 73 V) | 1894 | Norway | ||
| Minelegger Olav Tryggvason | 1934 | Norway | ||
| M/T Ole Jacob | 1939 | Norway | Hijacked, 1940-11-10 | |
| M/S Opo | 1945 | Norway | ||
| D/S Orb | 1911 | Great Britain | ||
| D/S Oter I | 1929 | Norway | ||
| Innkvarteringsfartøy Portsmouth Paris - Franske Marine (F/K Paris) | Unknown | Great Britain | ||
| D/S Polar 6 | 1925 | Norway | ||
| D/S Polaric (M 13 HD) (DSTO) | 1917 | Norway | ||
| D/S Pol I | 1926 | Norway | ||
| D/S Pol II | 1926 | Norway | ||
| D/S Pol III | 1926 | Norway | ||
| D/S Pol IV | 1926 | Norway | ||
| D/S Pol V | 1925 | Norway | ||
| D/S Pol VI | 1935 | Norway | ||
| D/S Pol VIII | 1936 | Norway | Hijacked, 1941-1-14 | |
| M/S Port Stanley | 1942 | Great Britain | ||
| Presidential yacht Potomac USS | 1934 | USA | ||
| M/S Quest (T 24 T) (DSTO) | 1917 | Norway | ||
| D/T US Navy Oiler Ramapo AO-12 | 1919 | USA | ||
| M/S Rensfjell | 1924 | Norway | ||
| D/S Ringulv | 1903 | Norway | Interned, 1940-6-22 | |
| Minesveiper Romney | 1940 | Norway | ||
| Vaktbåt Rossfjord T-38-LK | 1939 | Norway | ||
| D/S Rousay | 1942 | Norway |