Otway
| Name | Otway |
| Type | Armed merchant cruiser |
| GRT | 12,077 tons (one of the largest ships hit) |
| Country |  British |
| Built | 1909 |
| Builder | Fairfield SB. & Eng. Co., Ltd., Glasgow |
| Operator | Royal Navy |
| History | Peace-time operator: Orient Steam Navigation Co., Ltd., Glasgow |
U-boat attacks on Armed merchant cruiser Otway
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Jul 1917 | UC 49 (Karl Petri) | Sunk | N of the Butt of Lewis | 58.54N, 06.28W | 10 |
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