World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Ryugamizu | JPRYG | Japan |
| Ryuo | JPRYA | Japan |
| Rzhev | RURZV | Russian Federation (the) |
| s-Gravendeel | NLGRA | Netherlands |
| s-Gravenzande | NLGRZ | Netherlands |
| s-Hertogenbosch | NLHTB | Netherlands |
| Sa Canal | ESAAW | Spain |
| Sa Déc | VNSAD | Viet Nam |
| Saâcy-sur-Marne | FRS5M | France |
| Saaga Sadam | EESGS | Estonia |