Ainsdale
| Name | Ainsdale |
| Type | Sailing vessel |
| GRT | 1,825 tons |
| Country |  British |
| Built | 1890 |
| Builder | C. J. Bigger, Londonderry |
| Operator | P. Iredale & Porter, Liverpool |
| History | Converted 1918 to a steamer |
U-boat attacks on Sailing vessel Ainsdale
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Feb 1917 | U 54 (Volkhard von Bothmer) | Damaged | off southwestern Ireland | 50.00N, 13.50W | Buenos Ayres-Queenstown | Maize | 0 |
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