Sir Walter
| Name | Sir Walter |
| Type | Steamer |
| GRT | 492 tons |
| Country |  British |
| Built | 1878 |
| Builder | J. & G. Thomson, Glasgow |
| Operator | Sir Walter SS. Co. (Turner, Edwards & Co.), Bristol |
| History |
U-boat attacks on Steamer Sir Walter
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jul 1917 | UC 69 (Erwin Waßner) | Sunk | 43.46N, 07.50W | Bristol - Oporto | passengers & coal | 0 |
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