Shamrock
| Name | Shamrock |
| Type | Trawler |
| GRT | 173 tons |
| Country |  British |
| Built | 1900 |
| Builder | Cochrane & Cooper, Beverley |
| Operator | R. Osborne, Grimsby |
| History |
U-boat attacks on Trawler Shamrock
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Jan 1917 | UC 31 (Otto von Schrader) | Sunk | Stopped and sunk 115 miles NNE of Longstone | 0 |
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