Arnfinn Jarl
| Name | Arnfinn Jarl |
| Type | Steamer |
| GRT | 1,097 tons |
| Country |  Norwegian |
| Built | 1913 |
| Builder | Trondhjems Mek. Verks., Trondheim |
| Operator | Det Nordenfjeldske Dampskibsselskab, Trondheim |
| History |
U-boat attacks on Steamer Arnfinn Jarl
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 May 1917 | U 19 (Johannes Spieß) | Sunk | Torpedoed 16 miles W1/4N of Holmengraa | Narvik - Tyne | pitprops | 0 |
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