Barbara
| Name | Barbara |
| Type | Sailing vessel |
| GRT | 838 tons |
| Country |  American |
| Built | 1909 |
| Builder | R. T. Green, Chelsea, Mass. |
| Operator | Foreign And Domestic Transportation, New York |
| History |
U-boat attacks on Sailing vessel Barbara
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 May 1917 | U 47 (Heinrich Metzger) | Sunk | Stopped and set on fire 90 miles W of Gibraltar | 36.11N, 07.58W | Port Arthur - Spezia | petroleum | 0 |
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