Janet Ovenstone
| Name | Janet Ovenstone |
| Type | Motor fishing vessel |
| GRT | 15 tons |
| Country |  British |
| Built | |
| Builder | |
| Operator | John Ovenstone |
| History | Fishing registration: ML 264 |
U-boat attacks on Motor fishing vessel Janet Ovenstone
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 28 Jul 1916 | UB 23 (Ernst Voigt) | Sunk | Stopped ans sunk 13 miles NE of the Tyne | 0 |
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