San Antonio
| Name | San Antonio |
| Type | Sailing vessel |
| GRT | 13 tons |
| Country |  Italian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel San Antonio
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 7 Jun 1917 | U 33 (Gustav Sieß) | Sunk | Straits of Sicily | ||||
| per Lloyd\'s, Spindler has SANT\' ANTONIO P of 28t | ||||||||
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