| Carrier Code | Carrier Name |
| ISES | ISLAND SEA SHIPPING CORPORATION |
| ISEW | INTERNATIONAL SEAWAYS INC |
| ISFS | ISLAND FREIGHT SERVICE |
| ISHU | ISLAND SHIPPING LINE LTD |
| ISIH | INTERBULK SHIPPING INC |
| ISLF | ISLAND FEEDER LINE |
| ISLM | ISLAND MARINE CORP |
| ISLU | ISLANDIA LIMITED |
| ISNC | ISLAND CARGO CONSOLIDATORS INC |
| ISPU | ISLAND SHIPPING AND TRADING LTD |
| ISSG | ISLAND STEVEDORING INC |
| ISSP | ISLAND STATE SHIPPING INC |
| ISSU | ICELAND STEAM SHIP CO INC |
| ISTE | ISTIEA SHIPPING COMPANY LIMITED (CYPRUS) |
| ISTU | INTERNATIONAL SEA TRANSPORTATION CO |
