Hattie Dunn
| Name | Hattie Dunn |
| Type | Sailing vessel |
| GRT | 435 tons |
| Country |  American |
| Built | 1884 |
| Builder | Dunn & Eliot, Thomaston, ME |
| Operator | Dunn & Elliott, Co. Thomaston, ME |
| History | Three-masted wooden schooner. |
U-boat attacks on Sailing vessel Hattie Dunn
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 25 May 1918 | U 151 (Heinrich von Nostitz und Jänckendorff) | Sunk | Stopped and scuttled | 37.40N, 74.58W | Charleston - ? | in ballast | 0 |
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