Tusnastabb
| Name | Tusnastabb |
| Type | Steamer |
| GRT | 859 tons |
| Country |  Norwegian |
| Built | 1892 |
| Builder | Mij. de Maas, Rotterdam |
| Operator | Kristiansunds Dampskibselsk. A/S (T. Halvorsen), Kristiansund |
| History |
U-boat attacks on Steamer Tusnastabb
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 15 Apr 1916 | UC 7 (Georg Haag) | Sunk | Mined off Cape Gris-Nez | 50.54N, 01.34E | Newcastle - Boulogne | coal | 0 |
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