Arena
| Name | Arena |
| Type | Steamer |
| GRT | 1,019 tons |
| Country |  Norwegian |
| Built | 1883 |
| Builder | E. Finch & Co., Chepstow |
| Operator | A/S Rudolf (Olsen & Ugelstad), Christiania |
| History |
U-boat attacks on Steamer Arena
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 2 Apr 1916 | U 70 (Otto Wünsche) | Sunk | North Sea | 57.29N, 05.26E | Fredrikstad - Hull | ferrosilicon, paper and lumber | 0 |
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