Four
| Name | Four |
| Type | Drifter |
| GRT | 84 tons |
| Country |  British |
| Built | 1900 |
| Builder | Smith’s Dock Co. Ltd., North Shields |
| Operator | J. S. Summers, Peterhead |
| History | PRN: PD108 |
U-boat attacks on Drifter Four
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Jun 1915 | U 38 (Max Valentiner) | Sunk | Stopped and sunk by gunnery 45 miles NExE1/2E of Outer Skerries Light | 0 | |||
| Sunk at 11:20pm German time. | ||||||||
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