SM U1, also known in English as the German Type U 1 submarine, was the first Uboat class of the Uboat series of submarines produced for the German Empire's Imperial German NavyOnly one was built The U1 was constructed by Germaniawerft in Kiel and was commissioned on 14 December 1906 When World War I began in 1914, the U1 was deemed obsolete and was used only forWelcome to my channel I'm singing about love as a theme,please listen
第13話 U1グランプリ 前編 宇宙なんちゃらこてつくん
