Ben Ardna
| Name | Ben Ardna |
| Type | Navy Trawler |
| GRT | 197 tons |
| Country |  British |
| Built | 1912 |
| Builder | Hall, Russell & Co., Ltd., Aberdeen |
| Operator | Royal Navy |
| History | Peace-time operator: Richard Irvin And Sons Ltd., Aberdeen |
U-boat attacks on Navy Trawler Ben Ardna
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 8 Aug 1915 | UC 1 (Egon von Werner) | Sunk | Mined near the Elbow Buoy | 2 |
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