Kammala jumla mai zuwa: A lokacin Yaƙin Rasha da Japan, "Chōkai" ya taimaka a Siege na Port Arthur. A lokacin yunƙuri na uku na nutsewa tsofaffin jiragen ruwa a ƙoƙarin toshe ƙofar tashar jiragen ruwa ta Port Arthur, "Chōkai" ya kasance a matsayin ɗaya daga cikin masu rakiyar. A kan aikin harbi na bakin teku a ranar 26 ga Mayu 1904 don tallafawa Sojojin Japan na Biyu a Yaƙin Nanshan (tare da jirgin ruwa), "Chōkai" ya shiga wuta, kuma kyaftin dinta, Laftanar Kwamandan Hayashi Michio ya mutu. An maye gurbinsa da Laftanar Kwamandan Hirose Katsuhiko, babban dan uwan shahararren jarumin yaki Takeo Hirose, wanda ya jagoranci "Chōkai" har zuwa karshen yakin, ciki har da
mamayewar Sakhalin zuwa karshen yakin.