Leonardo G.
| Name | Leonardo G. |
| Type | Sailing vessel |
| GRT | 51 tons |
| Country |  Italian |
| Built | 1885 |
| Builder | |
| Operator | Gloia Nicola, Castellamare del Golfo |
| History | Schooner. Former name La Bella Giovannina |
U-boat attacks on Sailing vessel Leonardo G.
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 12 Jul 1917 | UC 67 (Karl Neumann) | Sunk | Stopped and scuttled 10 miles west of Marsala | 37° 33'N, 12° 08'E |
Position of attack on Leonardo G.
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