Joaquin Mumbru
| Name | Joaquin Mumbru |
| Type | Steamer |
| GRT | 2,703 tons |
| Country |  Spanish |
| Built | 1880 |
| Builder | W. Doxford & Sons, Sunderland |
| Operator | Domingo Mumbru, Barcelona |
| History |
U-boat attacks on Steamer Joaquin Mumbru
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 30 Dec 1917 | U 156 (Konrad Gansser) | Sunk | S of Madeira | 31° 17'N, 17° 20'W | Barcelona - New York | general cargo | |
| or Joaquim Membru | ||||||||
Position of attack on Joaquin Mumbru
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