World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Slavonski Brod | HRSBD | Croatia |
| Slavyanka | RUSKA | Russian Federation (the) |
| Sleat | GBATS | United Kingdom |
| Sledge Island | USSI2 | United States of America (the) |
| Sleeuwijk | NLSWK | Netherlands |
| Slemmestad | NOSLM | Norway |
| Sliedrecht | NLSLD | Netherlands |
| Sliema | MTSLM | Malta |
| Sligo | IESLI | Ireland |
| Slijkenburg | NLSKG | Netherlands |