| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S Semla | 1924 | Great Britain | ||
| M/S Sendingen II | 1917 | Norway | ||
| M/S Senja | 1938 | Norway | Attacked from air, 1945-5-4 | |
| M/K Senjafjell | Unknown | Norway | ||
| D/S Senta | 1917 | Norway | Torpedoed, 1942-10-13 | |
| M/S Septer | 1892 | Norway | ||
| D/S Seringa | 1913 | Great Britain | ||
| D/S Serula | 1918 | Great Britain | ||
| T/S Seton Hall Victory | 1945 | USA | ||
| Jakt Severine | 1882 | Norway | ||
| D/S Severoles | 1922 | Norway | ||
| M/S Sevilla | 1921 | Norway | ||
| D/S-flytende kokeri Sevilla | 1900 | Great Britain | ||
| D/S Sevra | 1929 | Great Britain | Sunk by mine, 1940-11-6 | |
| M/S Sfinx | 1943 | Norway | ||
| Lekter S.G.1 | Unknown | Norway | ||
| M/T Shabonee | 1930 | Panama | ||
| M/S Shanaliam | 1929 | Canada | ||
| M/S Shantung | 1929 | Sweden | Fire/Explosion, 1941-12-25 | |
| T/S Shawnee | 1927 | USA | ||
| D/S Sheaf Field | 1923 | Great Britain | Sunk by mine, 1940-10-28 | |
| D/S Sheelavati | 1921 | Great Britain | ||
| M/T Sheherazade | 1935 | Panama | Torpedoed, 1942-6-11 | |
| M/T Shelbrit 4 | 1928 | Great Britain | ||
| T/T Sheldon Clark | 1942 | USA |