Allegro
| Name | Allegro |
| Type | Motor boat |
| GRT | 7 tons |
| Country |  British |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Motor boat Allegro
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 7 Sep 1916 | U 72 (Ernst Krafft) | Sunk | Lost when Achaia, on which this and three other motor boats were being transported as deck cargo, sank on a mine 300 yards ENE of Oran Harbour. |
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