Gratangen
| Name | Gratangen |
| Type | Steamer |
| GRT | 2,484 tons |
| Country |  Norwegian |
| Built | 1916 |
| Builder | Great Lakes Engineering Works, Ashtabula, Ohio |
| Operator | A/S Jentofts Rederi (O. V. Jentoft), Bergen |
| History |
U-boat attacks on Steamer Gratangen
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 Jun 1917 | U 64 (Robert Moraht) | Sunk | 6 miles off Cape Tortosa | 40° 44'N, 1° 02'E | Newcastle - La Spezia | coal | 0 |
Position of attack on Gratangen
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