World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Port Saint Mary | GBPSM | United Kingdom |
| Port Saint Mary | IMPSM | Isle of Man |
| Port San Luis | USPSL | United States of America (the) |
| Port Sandwich | VUPSA | Vanuatu |
| Port Segoro Fajar Satryo/Jakarta | IDSGO | Indonesia |
| Port Seton | GBPSE | United Kingdom |
| Port Simpson | CAPSI | Canada |
| Port Stanley | FKPSY | Falkland Islands (Malvinas) |
| Port Stanley | AUPSY | Australia |
| Port Stanley | CAPST | Canada |