Vienna
| Name | Vienna |
| Type | Steamer |
| GRT | 4,170 tons |
| Country |  British |
| Built | 1899 |
| Builder | Barclay, Curle & Co., Ltd., Glasgow |
| Operator | Vienna SS. Co., Ltd. (Gow, Harrison & Co.), Glasgow |
| History |
U-boat attacks on Steamer Vienna
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 11 Sep 1917 | U 49 (Richard Hartmann) | Sunk | 340 miles W1/2N of Ushant | 46.59N, 13.05W | Brest - New York | general cargo | 25 |
| Master taken prisoner. | ||||||||
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