Boltonhall
| Name | Boltonhall |
| Type | Steamer |
| GRT | 3,595 tons |
| Country |  British |
| Built | 1900 |
| Builder | Irvine’s SB. & DD. Co., Ltd., West Hartlepool |
| Operator | West Hartlepool Steam Navigation Co., Ltd., West Hartlepool |
| History |
U-boat attacks on Steamer Boltonhall
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Aug 1918 | UB 92 (Johannes Paul Müller) | Sunk | 34 miles SWxW1/4W of Bardsey Island | Manchester - Gibraltar | coal | 5 |
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