Iparraguirre
| Name | Iparraguirre |
| Type | steamer |
| GRT | 1,161 tons |
| Country |  Spanish |
| Built | 1882 |
| Builder | Palmers’ SB. & Iron Co., Ltd., Newcastle |
| Operator | Jose Maria de Urquijo, Bilbao |
| History |
U-boat attacks on steamer Iparraguirre
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 Jul 1917 | U 66 (Gerhard Muhle) | Sunk | 40m NW of Butt of Lewis | 59.08N, 06.10W | Piteå & Bergen - Santander | pitwood | 1 |
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