Rubuta ci gaba don wannan sakin layi - A watan Fabrairun 1906, an sanya Yoshida a matsayin babban jami'in a kan jirgin ruwa. An ci gaba da zama kwamandan a 1906, kuma an sanya shi a matsayin jami'in zartarwa ga mai jirgi, wanda ya biyo baya a 1907. An daukaka shi zuwa kyaftin a watan Janairun 1911. Daga watan Janairun 1914 zuwa Fabrairun 1915, ya yi aiki a matsayin jami'in leken asiri a China, wanda ya hada da lokacin ayyukan sojan ruwan Japan a China yayin kewaye da Tsingtao
Daga Fabrairu zuwa Disamba 1916, ya kasance kyaftin na jirgin ruwa.