| Carrier Code | Carrier Name |
| CNVA | COLONIAL NAVIGATION CO INC |
| CNVU | CONSORCIO NAVIERO DE OCCIDENTE C A |
| CNWU | CONSOLIDATED WASTE INDUSTRIES INC |
| CNXU | CENTER NATIONAL POUR L'EXPLOITATION DES OCEANS |
| COAA | COASTAL TOWING & TRANSPORTATION CO |
| COAB | COASTAL INC |
| COAC | COMBINED ATLANTIC CARRIERS |
| COAW | COASTAL TOWING & LIGHTERAGE CORP |
| COBB | COBURG S A |
| COBU | CONTAINER BUSINESS INC |
| COBV | COBAM |
| COEL | COECLERICI ARMATORI SPA |
| COEU | CONOCO CHEMICALS EUROPE |
| COGU | COGEMA |
| COHL | COSMOS HOLDINGS LIMITED |
