| D/S Wallsend | 1937 | Great Britain | | Torpedoed, 1942-12-3 |
| D/S Walter Q. Gresham | 1943 | USA | | Torpedoed, 1943-3-18 |
| D/S Wanja | 1919 | Sweden | | Ran aground, 1939-10-14 |
| D/S Wawa | 1925 | Panama | | Shuttled, 1941-12-12 |
| D/S Wayfarer | 1925 | Great Britain | | Torpedoed, 1944-8-19 |
| D/S West Honaker | 1920 | USA | | Shuttled, 1944-6-8 |
| T/S West Lashaway | 1918 | USA | | Torpedoed, 1942-8-30 |
| D/S Wilford | 1921 | Norway | | Shelled by gunfire, 1942-6-7 |
| D/S Wilja | 1914 | Finland | | Torpedoed, 1940-2-17 |
| D/S William Barents | 1924 | Norway | | Requisitioned/confiscated by Axis power, 1940-4-11 |
| D/S William Blumer | 1920 | Norway | | Attacked from air, 1945-4-2 |
| D/T William Boyce Thompson | 1921 | USA | | Torpedoed, 1943-7-7 |
| D/S William Hansen | 1939 | Norway | | Torpedoed, 1942-1-21 |
| D/S Will Rogers | 1942 | USA | | Torpedoed, 1945-4-12 |
| T/S Windsor Castle | 1922 | Great Britain | | Attacked from air, 1943-3-23 |
| M/T Winkler | 1930 | Panama | | Torpedoed, 1943-2-23 |
| D/S Woolgar | 1914 | Norway | | Attacked from air, 1942-3-7 |