Seaports
| Seaport Name | Seaport Code | Country |
|---|---|---|
| Cabinda | AOCAB | Angola |
| Constitucion | ARVCN | Argentina |
| Comodoro Rivadavia | ARCRD | Argentina |
| Campana | ARCMP | Argentina |
| Caleta Olivia | ARCLO | Argentina |
| Cossack | AUPWL | Australia |
| Carnarvon | AUCVQ | Australia |
| Cape Preston | AUCPN | Australia |
| Cape Leeuwin | AUCLN | Australia |
| Cooktown | AUCTN | Australia |
| Caloundra Head | AUCAL | Australia |
| Cairns | AUCNS | Australia |
| Chittagong | BDCGP | Bangladesh |
| Chalna | BDCHL | Bangladesh |
| Cotonou | BJCOO | Benin |
| Cabedelo | BRCDO | Brazil |
| Comeau Bay | CABCO | Canada |
| Clarke City | CACLC | Canada |
| Chicoutimi | CACHI | Canada |
| Chandler | CACHR | Canada |