Martin Gust
| Name | Martin Gust |
| Type | Sailing vessel |
| GRT | 248 tons |
| Country |  Russian |
| Built | 1901 |
| Builder | C. Legsding, Wandsen |
| Operator | M. Brunsleep, Riga |
| History |
U-boat attacks on Sailing vessel Martin Gust
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 31 Jan 1918 | U 90 (Walter Remy) | Sunk | Stopped and sunk by gunnery off Ushant | Martinique - Bordeaux | rum and cocoa |
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