| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S Chirripo | 1920 | Honduras | ||
| D/S Chloe | 1928 | Greece | ||
| M/S Christiaan Huygens | 1928 | Netherlands | ||
| D/S Christiania | 1895 | Norway | ||
| D/S Christian Krohg | 1917 | Norway | Torpedoed, 1941-6-10 | |
| D/S Christian Michelsen | 1943 | Norway | Torpedoed, 1943-9-26 | |
| Stålfullrigger Christian Radich | 1937 | Norway | ||
| T/S Christiansborg | 1922 | Denmark | Torpedoed, 1940-3-21 | |
| D/S Christopher Gadsden | 1942 | USA | ||
| D/S Christopher S. Flanagan | 1944 | USA | ||
| D/S Chr. J. Kampmann | 1924 | Great Britain | Torpedoed, 1942-11-3 | |
| M/S Chr. Knudsen | 1925 | Norway | Torpedoed, 1942-4-10 | |
| M/S Chr. Sass | 1931 | Denmark | ||
| M/S Chr. Smed | 1942 | Denmark | ||
| M/T Chr. Th. Boe | 1930 | Norway | ||
| D/S Chungking | 1914 | Great Britain | ||
| TM-passasjerfartøy Cilicia | 1938 | Great Britain | ||
| D/S Ciltvaira | 1905 | Latvia | Torpedoed, 1942-1-19 | |
| D/S Ciss | 1925 | Norway | Ran aground, 1941-2-9 | |
| D/S Cissy | 1920 | Norway | ||
| D/T Cities Service Empire | 1918 | USA | Torpedoed, 1942-2-22 | |
| T/T Cities Service Fuel | 1916 | USA | ||
| T/T Cities Service Kansas | 1920 | USA | ||
| Skonnert Cito | 1904 | Norway | ||
| T/S City of Alma | 1920 | USA | Torpedoed, 1942-6-3 |