Diamant
| Name | Diamant |
| Type | Sailing vessel |
| GRT | 324 tons |
| Country |  French |
| Built | 1887 |
| Builder | J. Oltmann’s Witwe, Brake |
| Operator | Armement Veuve E. H. Mignot, St. Milo |
| History | Wooden bark. |
U-boat attacks on Sailing vessel Diamant
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 13 Jun 1915 | U 35 (Waldemar Kophamel) | Sunk | 50 miles W1/2S of Lundy Island | St. Milo - Swansea | in ballast |
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