Montanan
| Name | Montanan |
| Type | Steamer |
| GRT | 6,659 tons |
| Country |  American |
| Built | 1913 |
| Builder | Maryland Steel Co., Sparrow’s Point, Md. |
| Operator | American-Hawaiian Steamship Co., Inc., New York |
| History |
U-boat attacks on Steamer Montanan
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 15 Aug 1918 | U 90 (Helmut Patzig) | Sunk | Atlantic Ocean | 46° 47'N, 13° 42'W | New York - St. Nazaire | 5 | |
| Montanan had sailed from New York on 1 August 1918 in convoy HB8. | ||||||||
Position of attack on Montanan
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