Trois Freres
| Name | Trois Freres |
| Type | Sailing vessel |
| GRT | 106 tons |
| Country |  French |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Trois Freres
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Mar 1916 | U 32 (Kurt Hartwig) | Sunk | 50 miles WNW Penmarch |
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