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TH (1)| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| T/T Sheldon Clark | 1942 | USA | ||
| D/S Sheng Hwa | 1920 | Norway | Interned, 1941-5-10 | |
| D/S Shera | 1929 | Great Britain | Ran aground, 1942-3-9 | |
| D/S Sherwood Anderson | 1943 | USA | ||
| T/S Shickshinny | 1919 | USA | ||
| D/S Shika | 1929 | Great Britain | ||
| D/S Shinfu | 1901 | Great Britain | ||
| D/T Shinwha | 1904 | Great Britain | ||
| D/T Shirvan | 1925 | Great Britain | ||
| M/S Shooting Star | 1942 | USA | ||
| D/S Shova | 1912 | Great Britain | ||
| D/S Shusa | 1929 | Great Britain | ||
| D/S Siak | 1930 | Norway | ||
| D/S Siam | 1903 | Great Britain | Shuttled, 1942-3-? | |
| M/S Siam II | 1913 | Great Britain | Torpedoed, 1942-9-30 | |
| D/S Sibaldi | 1912 | Norway | ||
| D/S Sibley Park | 1944 | Canada | ||
| D/S Sicilia | 1898 | Norway | ||
| D/S Sidney Smith | 1929 | South Africa | ||
| D/S Sig | 1924 | Norway | Sunk by mine, 1939-11-4 | |
| D/S Sigfra | 1937 | Great Britain | ||
| D/S Siggy | 1921 | Finland | ||
| M/B Siglaos (M 149 H) | 1936 | Norway | ||
| M/S Signal | 1916 | Norway | ||
| D/S Signalhorn | 1914 | Norway |