Mafalda
| Name | Mafalda |
| Type | Sailing vessel |
| GRT | 162 tons |
| Country |  Italian |
| Built | 1903 |
| Builder | G. Benetti, Viareggio |
| Operator | E. Dipaolo, Viareggio |
| History | Wooden brigantine |
U-boat attacks on Sailing vessel Mafalda
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 27 Apr 1917 | U 33 (Gustav Sieß) | Sunk | Stopped and scuttled between Corsica and the French coast | 43° 06'N, 7° 40'E |
Position of attack on Mafalda
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