 | Obelix Bulker |  | 9170298 | Amsterdam |
 | Obrovac |  | 9489170 | Antwerpen |
 | Ocean Adventure |  | 9288485 | Antwerpen |
| Ocean Ambition | | 9717709 | Europort |
| Ocean Bloom | | 9633197 | Europort |
 | Ocean Brave | | 9883352 | Europort |
| Ocean Breeze | | 9309667 | Antwerpen |
| Ocean Caesar | | 9439125 | Europort |
 | Ocean Ceres |  | 9165516 | Europort |
| Ocean Cosmos | | 9218179 | Europort |
| Ocean Glory | | 9303077 | Gent |
| Ocean Honesty | | 9650810 | Antwerpen |
 | Ocean King D |  | 9233985 | Cuxhaven |
| Ocean Knight | | 9453248 | Antwerpen |
| Ocean Lady | | 9483322 | Europort |
| Ocean Light | | 9119074 | Antwerpen |
 | Ocean Lord | | 8308094 | Rotterdam |
| Ocean Prosperity | | 9401984 | Antwerpen |
 | Ocean Vita | | 9085895 | Rotterdam |
| Oceanic Breeze | | 9330317 | Gent |
 | Oceanis |  | 9225055 | Antwerpen |
| Odysseas | | 9595187 | Europort |
| Okolchitsa |  | 9841653 | Rotterdam |
| Olga |  | 9109548 | Rotterdam |
| Olmeca |  | 8119704 | Antwerpen |
| Olympic Glory |  | 9510694 | Europort |
 | Olympic Mentor | | 8307650 | Vlissingen |
| Omegas |  | 9138082 | Stade |
| Optimana |  | 9253856 | Sluiskil |
| Orange Island | | 9401958 | Antwerpen |
| Orawa |  | 9386926 | Antwerpen |
| Orient Alliance |  | 9496331 | Cuxhaven |
 | Orient Crusader | | 9464596 | Antwerpen |
| Orient Delivery | | 9522893 | Rotterdam |
| Orient Eternity | | 8204028 | Gent |
| Orient Saori | | 9152246 | Vlissingen |
| Orient Target | | 9467548 | Antwerpen |
| Oriental |  | 9127629 | Antwerpen |
| Orla | | 9154270 | Antwerpen |
| Orpheus | | 9646675 | Terneuzen |
 | Ostanhav |  | 8129395 | Europort |
 | Ostende Max |  | 9164653 | Rotterdam |
| Ourania | | 9196371 | Cuxhaven |