August
| Name | August |
| Type | Sailing vessel |
| GRT | 1,596 tons |
| Country |  Russian |
| Built | 1892 |
| Builder | Russell & Co., Greenock |
| Operator | August Troberg, Mariehamn |
| History | Steel-hulled bark. Built as Stjørn. |
U-boat attacks on Sailing vessel August
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Apr 1917 | U 43 (Hellmuth Jürst) | Sunk | Stopped and sunk 300 miles W of Ireland | 50.25N, 16.40W | Orange, Texas - Sharpness | pitch pine |
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