We have so far registered 92,376 seafarers
| Name | Born | Place of birth (place of living shown if missing) | | Fredrik Silen | | Lived in Finland | |
| E: Sillambaa | | Lived in Finland | |
| Bernardo Silva | | Lived in Portugal | |
| J. Silvermainen | | Lived in Viborg, Finland | |
| Huberto Silvero | | Lived in Rosario | |
| Magnus Simonsen | | Lived in Færøyene | |
| Olof Simonsson | | Lived in Sverige | |
| E. E. Simson | | Lived in København, Danmark | |
| Harry Sjøberg | | Lived in Sverige | |
| Veinoe Axel Johannes Sjøberg | October 7, 1894 | Born in Nyland Len, Finland | |
| Fredolf Sjødin | November 4, 1889 | Lived in Hörnösand | |
| W. Sjølander | | Lived in Sverige | |
| Georg Skirda | | Lived in Russland | |
| Anders Bent Skånberg | October 15, 1887 | Born in Gøteborg | |
| C. A. Slager | | Born in Nederland | |
| Charles Smith | | Lived in USA | |
| Hans Smith | 1889 | Lived in Bramminge, Jylland | |
| Jack Smith | 1862 | Born in Birkenhead, UK | |
| Robert Smith | 1894 | Born in Aarhus | |
| T. Southewise | 1894 | Lived in Boston, Mass. | |
| Burdette Southworth | 1886 | Lived in Southport, Maine | |
| Per Stenfeldt | August 15, 1891 | Born in Boraas, Sverige | |
| T. Stergio | | Lived in Hellas | |
| C. Stillos | | Lived in Hellas | |
| Cornelis Stoutenberg | 1897 | Born in Rotterdam | |