World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Karlova Paadisadam | EEKAP | Estonia |
| Karlsborg Axelvik | SEKXV | Sweden |
| Karlshamn | SEKAN | Sweden |
| Karlskrona | SEKAA | Sweden |
| Karlslunde | DKKAR | Denmark |
| Karlsøy | NOKAY | Norway |
| Karlsruhe | DEKAE | Germany |
| Karlstad | SEKSD | Sweden |
| Karlsvik | SEKAK | Sweden |
| Karmei Yosef | ILKY7 | Israel |