There have two German U-boats with the designation U-86. The first (pictured above) was launched on 7 Nov, 1916 from Germaniawerft shipyard in Kiel. It was a type Mittel U U-boat. U-86 was commissioned on 30 Nov, 1916 under the command of Friedrich Crüsemann. This boat made 12 patrols, and sunk 33 ships totalling 125,580 tons. U-86 became infamous on 27 June, 1918, when it sank the Hospital ship Llandovery Castle in violation of international law and standing orders of the Imperial German Navy. The captain, Oblt.z.S. Helmut Patzig, then allegedly ordered his crew to machine gun survivors in the water and ram the lifeboats. Because of this, Patzig and his watch officers were tried for war crimes in a German court after the war and sentenced to four years imprisonment. U-86 itself survived to the end of the war, and was surrendered to the Allies and sunk off the English coast while being towed.
The second U-boat to have the name U-86 was built at Flender-Werke shipyard in Lübeck. This type VIIB U-boat was commissioned 8 July, 1941 under the command of Kptlt. Walter Schug. This boat had a somewhat less distiguished career, sinking 3 ships totalling 9,614 tons over the course of 7 patrols. U-86 disappeared somewhere in the North Atlantic and was listed missing on 14 Dec, 1943 after failing to answer radio calls. The cause of its disappearence is unknown.
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