Orkney
| Name | Orkney |
| Type | Sailing vessel |
| GRT | 291 tons |
| Country |  Danish |
| Built | 1872 |
| Builder | A. Stephen & Sons, Glasgow |
| Operator | “Orkney”, Aalborg |
| History | Iron-hulled bark. |
U-boat attacks on Sailing vessel Orkney
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 Aug 1918 | U 157 (Ortwin Rave) | Sunk | Stopped and scuttled well west of Gibraltar. | 39.50N, 17.47W | Cadiz - Reykjavik | salt | 5 |
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