Hamnavoe
| Name | Hamnavoe |
| Type | Drifter |
| GRT | 57 tons |
| Country |  British |
| Built | 1901 |
| Builder | S. Richards & Co., Lowestoft |
| Operator | J. W. Robertson & L. Sinclair, Lerwick |
| History | Wood-built. PRN: LK400 |
U-boat attacks on Drifter Hamnavoe
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 2 Jul 1917 | UC 33 (Martin Schelle) | Sunk | Stopped and sunk by gunnery 26 miles ESE of Sumburgh Head | 0 | |||
| Location also given as 65 miles E of Sumburgh Head | ||||||||
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