Pinna
| Name | Pinna |
| Type | Tanker |
| GRT | 6,288 tons |
| Country |  British |
| Built | 1901 |
| Builder | Armstrong, Whitworth & Co., Ltd., Newcastle |
| Operator | Petroleum SS. Co., Ltd. (Lane & Macandrew), London |
| History |
U-boat attacks on Tanker Pinna
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 12 Feb 1917 | UC 65 (Otto Steinbrinck) | Damaged | Torpedoed 7.5 miles SSE from South Bishops. Beached at Milford Haven, later refloated. | Port Arthur - ? | oil | 0 |
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