Kalps
| Name | Kalps |
| Type | Sailing vessel |
| GRT | 284 tons |
| Country |  Russian |
| Built | 1904 |
| Builder | Morgenstern, Uuppesgriew |
| Operator | Gebruder Puhling, Riga |
| History |
U-boat attacks on Sailing vessel Kalps
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 15 Aug 1918 | U 157 (Ortwin Rave) | Sunk | Stopped and scuttled off Lisbon | 37° 57'N, 18° 27'W | Havre - Martinique | in ballast |
Position of attack on Kalps
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