Mountby
| Name | Mountby |
| Type | Steamer |
| GRT | 3,263 tons |
| Country |  British |
| Built | 1898 |
| Builder | W. Gray & Co., Ltd., West Hartlepool |
| Operator | Sir R. Ropner & Co., Ltd., West Hartlepool |
| History |
U-boat attacks on Steamer Mountby
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 10 Jun 1918 | UC 49 (Hans Kükenthal) | Sunk | Torpedoed 8 miles ExS of the Lizard at 4:20am | 49.58N, 05.01W | Swansea - ? | Admiralty stores | 0 |
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