HMS Ferret
| Name | HMS Ferret |
| Type | Destroyer |
| GRT | 778 tons |
| Country |  British |
| Built | 1911 |
| Builder | J. Samuel White, Cowes |
| Operator | Royal Navy |
| History |
U-boat attacks on Destroyer Ferret
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 18 Jan 1917 | UC 21 (Reinhold Saltzwedel) | Damaged | Torpedoed SE of St. Catherine’s Point | 1 |
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