Ailsa
| Name | Ailsa |
| Type | Steamer |
| GRT | 876 tons |
| Country |  British |
| Built | 1884 |
| Builder | Caird, Purdie & Co., Barrow |
| Operator | Chr. Salvesen & Co., Leith |
| History |
U-boat attacks on Steamer Ailsa
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 18 Jun 1915 | U 17 (Hans Walther) | Sunk | Captured and scuttled 12 miles SE Arbroath. | Trondheim-Leith | wood | 0 |
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