Alerte
| Name | Alerte |
| Type | Sailing vessel |
| GRT | 176 tons |
| Country |  French |
| Built | 1903 |
| Builder | E. Alleau, Nantes |
| Operator | Lefebre & Lecoutre, Fécamp |
| History | Wooden schooner. |
U-boat attacks on Sailing vessel Alerte
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 17 Dec 1916 | UC 17 (Ralph Wenninger) | Sunk | Stopped and sunk 40 miles west of the Casquets | 49.42N, 03.25W | Morlaix - Tréport | asphalt | 0 |
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