C 34
| Name | C 34 |
| Type | Submarine |
| GRT | 321 tons |
| Country |  British |
| Built | 1910 |
| Builder | H.M. Dockyard, Chatham |
| Operator | Royal Navy |
| History |
U-boat attacks on Submarine C 34
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 17 Jul 1917 | U 52 (Hans Walther) | Sunk | Off the Shetland Islands | 59.51N, 01.05W | 18 | ||
| U 52 picked up the sole survivor it located from the sinking. | ||||||||
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