Tris Adelphi
| Name | Tris Adelphi |
| Type | Sailing vessel |
| GRT | 53 tons |
| Country |  Greek |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Tris Adelphi
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 Jul 1918 | k.u.k. U27 (Josef Holub) | Sunk | 35° 47'N, 25° 19'E | 0 | |||
| or TREIS ADELPHOI | ||||||||
Position of attack on Tris Adelphi
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