We have so far registered 1,478 home ports
| Name | Founded | | Sheet Harbour | |
| Shimizu | |
| Shimonoseki | |
| Ship Island | |
| Ships Pool USA | |
| Shoreham | |
| Sierra Leone | |
| Sigerfjord | |
| Sikeå, Vesterbotten, Sverige | |
| Silda, Loppa | |
| Silloth, Cumberland, England | |
| Simrishamn, Skåne län, Sverige | |
| Singapore | |
| Sinnes | |
| Sittingbourne | |
| Skagen | |
| Skegness | |
| Skellefteå, Västerbottens Län, Sverige | |
| Skien | |
| Skikda | |
| Skillinge | |
| Skipavika | |
| Skogn | |
| Skorosen, Sotra | |
| Skorpa, Herøy | |
