Wasdale
| Name | Wasdale |
| Type | Sailing vessel |
| GRT | 1,856 tons |
| Country |  Norwegian |
| Built | 1881 |
| Builder | Whitehaven SB Co., Whitehaven |
| Operator | A/S Wasdale (N. A. Lydersen), Tvedestrand |
| History | Iron-hulled ship-rigged sailing vessel. |
U-boat attacks on Sailing vessel Wasdale
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Feb 1917 | U 43 (Hellmuth Jürst) | Sunk | Stopped and sunk WSW of Fastnet | 50.22N, 11.53W | Buenos Aires – Dublin | maize | 0 |
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