Bayonnais
| Name | Bayonnais |
| Type | Fishing vessel (sail) |
| GRT | 20 tons |
| Country |  French |
| Built | |
| Builder | |
| Operator | Auguste Roger, Guilvinec |
| History |
U-boat attacks on Fishing vessel (sail) Bayonnais
| 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. | Fishing | 4 | ||
| Master Jean Struillou aged 20, the eldest on board. | ||||||||
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