Rio Amazonas
| Name | Rio Amazonas |
| Type | Steamer |
| GRT | 2,970 tons |
| Country |  Italian |
| Built | 1891 |
| Builder | G. Ansaldo & Co., Sestri Ponente |
| Operator | Cav. Giuseppe Trucco, Genoa |
| History |
U-boat attacks on Steamer Rio Amazonas
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 13 May 1917 | U 38 (Max Valentiner) | Sunk | 150 miles SW of Crete | 33° 40'N, 20° 46'E | Port Said - Italy | rice | 0 |
Position of attack on Rio Amazonas
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