Petunia
| Name | Petunia |
| Type | Drifter |
| GRT | 58 tons |
| Country |  British |
| Built | 1903 |
| Builder | Chambers & Colby Ltd., Lowestoft |
| Operator | F. J. Johnson, Great Yarmouth |
| History | Wooden-hulled. PRN: YH576 |
U-boat attacks on Drifter Petunia
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Jul 1916 | UB 23 (Ernst Voigt) | Sunk | Stopped and sunk 23 miles SE of the Tyne | 1 |
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