Kringsjaa
| Name | Kringsjaa |
| Type | Sailing vessel |
| GRT | 1,750 tons |
| Country |  Norwegian |
| Built | 1886 |
| Builder | W. Doxford & Sons, Sunderland |
| Operator | Skibs-A/S Kringsjaa (Kr. Knudsen), Kristiansand |
| History | Four-masted, iron-hulled bark. Built as Colony. |
U-boat attacks on Sailing vessel Kringsjaa
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Jun 1918 | U 151 (Heinrich von Nostitz und Jänckendorff) | Sunk | Stopped and sunk by gunnery 90 miles off the Virginia coast | 38.02N, 71.40W | Buenos Aires – New York | linseed | 0 |
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