Therese et Marthe
| Name | Therese et Marthe |
| Type | Fishing vessel |
| GRT | 32 tons |
| Country |  French |
| Built | 1913 |
| Builder | ?, Le Palais |
| Operator | Valentin Dréano, Riantec (Morbihan) |
| History |
U-boat attacks on Fishing vessel Therese et Marthe
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 Oct 1918 | U 91 (Alfred von Glasenapp) | Sunk | Stopped and scuttled in the Bay of Biscay | 46.36N, 02.38W | |||
| Master Jean Marie Rio | ||||||||
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