San Dunstano
| Name | San Dunstano |
| Type | Tanker |
| GRT | 6,220 tons |
| Country |  British |
| Built | 1912 |
| Builder | Swan, Hunter & Wigham Richardson, Ltd., Newcastle |
| Operator | Eagle Oil Transport Co., Ltd., London |
| History |
U-boat attacks on Tanker San Dunstano
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Sep 1917 | U 52 (Hans Walther) | Damaged | Torpedoed 40 miles N of Ushant | Puerto Mexico - London | oil | 1 |
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