Elsa
| Name | Elsa |
| Type | Sailing vessel |
| GRT | 1,236 tons |
| Country |  Danish |
| Built | 1876 |
| Builder | G. W. Russell, East Deering, Maine |
| Operator | A/S K. Steglich-Petersen, Copenhagen |
| History | Wooden-hulled bark. |
U-boat attacks on Sailing vessel Elsa
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 Sep 1917 | U 48 (Karl Edeling) | Sunk | Torpedoed 6 miles off Kinsale | Penarth - Korsör | coal | 5 |
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