Kammala wannan jumla: A farkon watanni na Yakin Rasha da Japan, an sanya Kataoka a matsayin kwamandan Rundunar Sojoji ta 3, tarin tsoffin jiragen ruwa da ake wa lakabi da "Funny Fleet". Duk da bambancin bambancin jiragen ruwa na tsofaffi, Kataoka ya sami bambanci da ke jagorantar rukuni na biyar da na shida daga cikin jirgin ruwa a lokacin yakin Yellow Sea da kuma daga baya daga cikin jirgin ruwa a lokacin yakin Tsushima. Ya kuma jagoranci rundunar sojan ruwa zuwa
kama Sakhalin kafin kulla yarjejeniyar Portsmouth.