HMY Aries
| Name | HMY Aries |
| Type | Navy Yacht |
| GRT | 268 tons |
| Country |  British |
| Built | 1880 |
| Builder | Barrow SB. Co., Ltd., Barrow |
| Operator | Royal Navy |
| History | Peace-time operator: The Duke of Leeds. Build date listed as 1881 in some sources. |
U-boat attacks on Navy Yacht Aries
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 31 Oct 1915 | UC 6 (Matthias Graf von Schmettow) | Sunk | Mined off Leathercoat | 51° 00'N, 1° 24'E | 22 |
Position of attack on Aries
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