Blackwhale
| Name | Blackwhale |
| Type | Navy Whaler |
| GRT | 237 tons |
| Country |  British |
| Built | 1915 |
| Builder | Smith’s Dock Co., Ltd., Middlesbrough |
| Operator | Royal Navy |
| History | A whaler built for the Royal Navy and used as a patrol vessel. |
U-boat attacks on Navy Whaler Blackwhale
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Jan 1918 | UC 49 (Hans Kükenthal) | Sunk | Mined off Fife Ness | 56° 19'N, 0° 45'W | 12 |
Position of attack on Blackwhale
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