Kornsø
| Name | Kornsø |
| Type | Auxiliary motor |
| GRT | 115 tons |
| Country |  Danish |
| Built | 1916 |
| Builder | A. Jensen, Svendborg |
| Operator | A/S Dansk Rederi Kompagni, København |
| History | Three-masted wooden schooner fitted with an auxiliary motor. |
U-boat attacks on Auxiliary motor Kornsø
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 Jun 1917 | U 62 (Ernst Hashagen) | Sunk | Stopped and sunk by gunnery NW of the Orkneys | Ibiza - Klaksvig | salt | 0 |
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