Frere Des Cinq Soeurs
| Name | Frere Des Cinq Soeurs |
| Type | Sailing vessel |
| GRT | 20 tons |
| Country |  French |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Frere Des Cinq Soeurs
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Apr 1917 | UC 72 (Ernst Voigt) | Sunk | Audierne Bay |
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