| O.T.IDEAAL | 9431604 |  |
| OCEAN PRIDE | 9220639 |  |
| OCEAN ZEPHYR | 9000625 |  |
| ODERBORG | 9374703 | |
| ODYSEUSZ | 8102579 |  |
| OERD | 9269673 | |
| OLIVIA | 9113202 |  |
| OLIVIER | 8515283 |  |
| OMSKIY-100 | 8866723 |  |
| OOC SAPPHIRE | 9664445 | |
| OPTIMAR | 8300262 |  |
| ORALAKE | 9286463 | |
| ORCANA | 9357511 | |
| ORIENTAL HIGHWAY | 8020214 | |
| ORION | 7730616 | |
| ORION HIGHWAY + | 8401224 | |
| ORION TRADER | 7920388 | |
| OSC VICTORIADIEP | 9351153 | |
| OSPREY II (PD-47) | 8402694 |  |
| OSTEBORG | 9033866 |  |
| OSTEREMS | 9148207 |  |
| OSTETAL (HF 567) | --- |  |