Rubuta ci gaba don wannan sakin layi - jirgin ruwa ne na pre-dreadnought wanda aka gina don Rundunar Sojan Ruwa ta Imperial Japan (IJN) a ƙarshen 1890s. An sa masa suna bayan Dutsen Mikasa a Nara, Japan, jirgin ya zama babban jirgin ruwa na Mataimakin Admiral Tōgō Heihachirō a duk lokacin Yaƙin Russo-Japan na 1904<unk>1905, gami da Yaƙin Port Arthur a rana ta biyu ta yaƙin da Yaƙin Tekun Yellow
da Tsushima. Kwanaki bayan karshen yakin, mujallar "Mikasa" ta fashe ba da gangan ba kuma ta nutse jirgin. An ceto ta kuma gyaranta ya ɗauki fiye da shekaru biyu don kammalawa. Daga baya, jirgin ya yi aiki a matsayin jirgin ruwa na kariya a lokacin yakin duniya na farko kuma ya goyi bayan sojojin Japan a lokacin da ake shiga tsakani a Siberia a cikin yakin basasa na Rasha.