Asra
| Name | Asra |
| Type | Sailing vessel |
| GRT | 1,975 tons |
| Country |  Norwegian |
| Built | 1898 |
| Builder | Huijgens & van Gelder, Amsterdam |
| Operator | A/S Odderø (Thv. B. Heistein & Sønner A/S), Kristiansand |
| History | Steel-hulled, ship-rigged sailing vessel. Built as Europa. |
U-boat attacks on Sailing vessel Asra
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 May 1917 | U 58 (Kurt Wippern) | Sunk | Stopped and sunk by gunnery about 140 miles WNW of Tory Island | 55.40N, 12.10W | Belfast – New York | in ballast | 0 |
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