HMS M 15
| Name | HMS M 15 |
| Type | Monitor |
| GRT | 540 tons |
| Country |  British |
| Built | 1915 |
| Builder | W. Gray & Co., Ltd., West Hartlepool |
| Operator | Royal Navy |
| History |
U-boat attacks on Monitor M 15
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 11 Nov 1917 | UC 38 (Hans Hermann Wendlandt) | Sunk | Torpedoed at Deir el Belah, Palestine coast | 26 |
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