Diaz
| Name | Diaz |
| Type | Sailing vessel |
| GRT | 637 tons |
| Country |  Russian |
| Built | 1882 |
| Builder | O. M. Olsen, Arendal |
| Operator | G. E. Lundberg, Mariehamn |
| History | Wooden bark. |
U-boat attacks on Sailing vessel Diaz
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 7 Feb 1917 | U 83 (Bruno Hoppe) | Sunk | S of Ireland | 50.05N, 08.43W | Savanna-la-Mar, Jamaica - Fleetwood | logwood |
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