| Carrier Code | Carrier Name |
| CHPU | CHINESE-POLISH SHIPPING CO (SHIPOLBROK) |
| CHQA | CHALET SHIPPING LIMITED |
| CHQG | CHAPEL NAVIGATION LTD |
| CHVU | CHEVRON U S A |
| CHZS | CHRONOS SHIPPING COMPANY LTD |
| CIAU | CIAT/ROSSI |
| CIBU | CONT-ASPHALT LTD |
| CICU | CIE IMMOBILIERE & COMMERCE |
| CIEU | CORAS IOMPAIR EIREANN |
| CIFS | CORTES, ISABEL FERRY SERVICE |
| CIFU | COMPAGNIE FRANCAISE POUR LE DEVELOPMENT DES FIBRES TEXTILES |
| CIHU | CONTAINERS INTERNATIONAL LTD |
| CIID | COLONIAL MARINE INDUSTRIES INC |
| CIIG | C & M SHIPPING INC |
| CIJU | CHIYODA SINGAPORE PTE LTD |
