Frithjof
| Name | Frithjof |
| Type | |
| GRT | |
| Country |  Norwegian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Frithjof
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Feb 1917 | Sunk | 16 miles N75W Whistle Buoy Cape de la Hève |
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