it was then that prince sadanaru became an honorary member of the empire of japan marine rescue japan (in japanese , dai nihon teikoku suinan kyusai kai; currently , marine rescue japan ) and nippon kaiji kyokai (also known as nk or classnk ). 大日本帝国水難救済会名誉会員、海事協会名誉会員。
in 1899 , he assumed the post of the first administrative director of imperial kaiji kyokai (present-day nippon kaiji kyokai , japan maritime society ), and made an effort to organize imperial fleet of loyalty and courage with imperial prince takehito arisugawanomiya as president . 1899年、帝国海事協会初代理事長となり、有栖川宮威仁親王を総裁に奉戴し、帝国義勇艦隊結成に尽くした。
