 Werner was replaced by Alexander Weiss on 10 August 1918, Weiss being succeeded by Hans Friedrich on 15 September and commanding "U-55" until the armistice on 11 November.On 26 November 1918 "U-55" was surrendered to the Royal Navy at Harwich, along with the rest of the surviving U-Boat fleet.It was subsequently handed over to Japan, and entered service with the Imperial Japanese Navy in 1920 as "O3", serving as such until 1921.