Cairnhill
| Name | Cairnhill |
| Type | Steamer |
| GRT | 4,981 tons |
| Country |  British |
| Built | 1912 |
| Builder | A. McMillan & Son, Ltd., Dumbarton |
| Operator | Macbeth & Co., Ltd., Glasgow |
| History |
U-boat attacks on Steamer Cairnhill
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 17 Apr 1917 | U 55 (Wilhelm Werner) | Sunk | 160 miles NW of Fastnet | 52° 09'N, 13° 16'W | New York - Havre | general cargo | 0 |
| Master taken prisoner. | ||||||||
Position of attack on Cairnhill
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