HMD Pelagia
| Name | HMD Pelagia |
| Type | Navy Drifter |
| GRT | 84 tons |
| Country |  British |
| Built | 1900 |
| Builder | Smith’s Dock Co. Ltd., North Shields |
| Operator | Royal Navy |
| History | Peace-time operator: Charles Weir, Portbollintrae, Co. Antrim |
U-boat attacks on Navy Drifter Pelagia
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 28 Nov 1916 | UC 21 (Reinhold Saltzwedel) | Sunk | Mined 1 mile south-east of the Nab LV. | 12 |
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