Rob Roy
| Name | Rob Roy |
| Type | Motor fishing vessel |
| GRT | 111 tons |
| Country |  American |
| Built | 1900 |
| Builder | ?, Essex, Mass. |
| Operator | Gorton-Pew Fishweries Co., Glouchester |
| History | "Gas Screw" |
U-boat attacks on Motor fishing vessel Rob Roy
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Aug 1918 | U 156 (Richard Feldt) | Sunk | Stopped and sunk 35 miles E of Seal Island, Nova Scotia | 0 |
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