Elna
| Name | Elna |
| Type | Sailing vessel |
| GRT | 78 tons |
| Country |  Danish |
| Built | 1908 |
| Builder | C.H. Petersen, Ærøskøbing |
| Operator | H.R. Eriksen, Ærøskøbing |
| History | Three-masted wooden schooner. |
U-boat attacks on Sailing vessel Elna
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 26 Jul 1915 | U 6 (Reinhold Lepsius) | Sunk | 56° 53'N, 2° 46'E | Christiania - Leith | planed boards | 0 |
Position of attack on Elna
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