旅順港閉塞作戦
Promoted to rear admiral on 20 May 1900, and vice admiral on 6 June 1904, during the Russo-Japanese War he was a commander of the 3rd Cruiser Squadron of the IJN 1st Fleet and took part in the naval Battle of Port Arthur, and the Battle of the Yellow Sea, (where he commanded from the cruiser ). During the decisive Battle of Tsushima he led the Third Squadron from his flagship, the cruiser .