Ships hit by U-645
See the profile page for U-645
| Date | U-boat | Commander | Name of ship | Tons | Nat. | Convoy | ||
| 20 Sep, 1943 | U-645 | Otto Ferro | Frederick Douglass | 7.176 |  | am | ON-202 | |
| 9 Oct, 1943 | U-645 | Otto Ferro | Yorkmar | 5.612 | | am | SC-143 | |
| 12.788 | ||||||||
| 2 ships sunk (12.788 tons). | ||||||||