| Carrier Code | Carrier Name |
| TWMN | TIDEWATER MARINE INC |
| TWMU | TRANSWORLD MARINE AGENCY |
| TWNB | TWINBROOK CORPORATION |
| TWNV | TOWER NAVIGATION LTD |
| TWRL | TRANSWORLD LINE INC |
| TWSD | TIDEWATER STEVEDORING CORP |
| TWSU | TWS TRANSPORTMITTEL VERMIETUNG |
| TWTU | TRANS-WORLD TARIFF & RESEARCH SERVICE INC |
| TWXS | TWIN EXPRESS |
| TXCC | TEXAS CARIBBEAN CONSOLIDATORS INC |
| TXMA | TEXAS MARINE AGENCY INC |
| TYCU | YAMATO TRANSPORT CO LTD |
| TYOQ | TULIPSEA SHIPPING LTD |
| TYSE | TYSON SEAFOOD GROUP INC |
| UAEU | UNITED ARAB SHIPPING |
