| Carrier Code | Carrier Name |
| OBNV | OBELISK NAVIGATION S A |
| OBOO | OBO SHIP ONE LTD |
| OBOR | OBO SHIP FOUR LTD |
| OBOT | OBO SHIP TWO LTD |
| OBOW | OBO SHIP THREE LTD |
| OCBU | OCEAN CONTAINER LIMITED |
| OCCD | OCCIDENTAL SERVICES CORPORATION |
| OCCI | OCCIDENTAL CARRIERS S A |
| OCDI | OCEAN DUCHESS INC |
| OCEL | OCEAN EXPRESS LINE INC |
| OCEO | OCEANO SHIPPING CO INC |
| OCIN | OCEANS INTERNATIONAL CORPORATION |
| OCMR | OCEANMARIS MANAGEMENT INC |
| OCNG | OCEAN EAGLE S A |
| OCNH | OCEANANCHOR MARITIME LIMITED |
