Jacob M. Haskell
| Name | Jacob M. Haskell |
| Type | Sailing vessel |
| GRT | 1,778 tons |
| Country |  American |
| Built | 1901 |
| Builder | Cobb, Butler & Co., Rockland, ME |
| Operator | Crowell & Thurlow, Boston |
| History |
U-boat attacks on Sailing vessel Jacob M. Haskell
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 2 Jun 1918 | U 151 (Heinrich von Nostitz und Jänckendorff) | Sunk | Stopped and sunk 50 miles ExS of Barnegat, New Jersey | Norfolk - Portland, ME | coal | 0 |
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