| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/T California | 1921 | USA | ||
| D/S Calmar | 1920 | USA | ||
| D/S Calvin Coolidge | 1943 | USA | ||
| M/S Cambridge | 1928 | USA | ||
| T/S Campfire | 1919 | USA | ||
| T/S Canada Victory | 1944 | USA | Attacked from air, 1945-4-27 | |
| T/S Cape Cod | 1941 | USA | ||
| M/S Cape Igvak | 1943 | USA | ||
| M/S Cape Juby | 1944 | USA | ||
| T/S Cape Mohican | 1942 | USA | ||
| M/S Cape Ugat | 1942 | USA | ||
| T/S Capital Victory | 1945 | USA | ||
| M/S Captain Lawrence B. Morris | 1943 | USA | ||
| D/S Caribstar | 1919 | USA | ||
| T/T Carlsbad | 1945 | USA | ||
| D/S Carolinian | 1921 | USA | ||
| D/S Carrillo | 1911 | USA | ||
| D/S Cartago | 1908 | USA | ||
| D/S Carter Braxton | 1942 | USA | ||
| D/S Casimir Pulaski | 1943 | USA | ||
| D/S Casper S. Yost | 1943 | USA | ||
| T/S Castana | 1919 | USA | ||
| D/S Cecil G. Sellers | 1944 | USA | ||
| D/S Cecil N. Bean | 1944 | USA | ||
| T/T Celilo | 1944 | USA |