Aghios Johannes
| Name | Aghios Johannes |
| Type | Sailing vessel |
| GRT | 14 tons |
| Country |  Greek |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Aghios Johannes
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jan 1918 | UC 23 (Hans Georg Lübbe) | Sunk | off Skyros | 39° 09'N, 25° 18'E |
Position of attack on Aghios Johannes
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