Marthe
| Name | Marthe |
| Type | Sailing vessel |
| GRT | 3,119 tons |
| Country |  French |
| Built | 1900 |
| Builder | Atel. & Chantiers de Normandie, Grand Quevilly |
| Operator | Ant. Dom. Bordes et fils, Dunkerque |
| History | Steel-hulled four-masted bark. |
U-boat attacks on Sailing vessel Marthe
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 2 Aug 1917 | U 155 (Karl Meusel) | Sunk | Sunk by artillery and scuttling charges SSE of the Azores | 33.38N, 23.30W | Bordeaux - Valparaiso | in ballast | 1 |
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