Petit Ernest
| Name | Petit Ernest |
| Type | Fishing vessel (sail) |
| GRT | 20 tons |
| Country |  French |
| Built | 1914 |
| Builder | ?, Pont-Labbé |
| Operator | Sebastien Cossec, Guilvinec |
| History |
U-boat attacks on Fishing vessel (sail) Petit Ernest
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Apr 1917 | UC 72 (Ernst Voigt) | Sunk | Stopped and scuttled off Guilvinec harbour. Crew not recovered. | 3 | |||
| Master Pierre Montfort | ||||||||
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