Linnea (n-1)
| Name | Linnea (n-1) |
| Type | Auxiliary minesweeper |
| GRT | 739 tons |
| Country |  Russian |
| Built | 1892 |
| Builder | W. Lindbergs A/B, Stockholm |
| Operator | Imperial Russian Navy |
| History | Peace-time operator: Helsingfors Ångfartygs A/B, Helsingfors |
U-boat attacks on Auxiliary minesweeper Linnea (n-1)
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 Sep 1915 | UC 4 (Karl Vesper) | Sunk | Mined off Worms Island |
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