Ida
| Name | Ida |
| Type | Sailing vessel |
| GRT | 302 tons |
| Country |  Swedish |
| Built | 1870 |
| Builder | C. Roman & Barford, Elsinore |
| Operator | O. S. Johansson |
| History | Wooden bark, built as I. S. Pontoppidan. |
U-boat attacks on Sailing vessel Ida
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 22 Jul 1916 | UB 37 (Hans Valentiner) | Sunk | E of Hartlepool | Kristiania - Tyne | pit props | 0 |
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