World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Castell | DECYN | Germany |
| Castellammare del Golfo | ITCTR | Italy |
| Castellammare di Stabia | ITCAS | Italy |
| Castellón de la Plana | ESCAS | Spain |
| Castelo do Neiva | PTCNV | Portugal |
| Castelsardo | ITCTK | Italy |
| Castets-en-Dorthe | FRCDH | France |
| Castiglioncello | ITATI | Italy |
| Castiglione della Pescaia | ITCEQ | Italy |
| Castile | USOMW | United States of America (the) |