旅順港閉塞作戦
During the Russo-Japanese War, Suzuki commanded Destroyer Division 2 in 1904, which picked up survivors of the Port Arthur Blockade Squadron during the Battle of Port Arthur. He was appointed executive officer of the cruiser on 26 February 1904, aboard which he participated in the Battle of the Yellow Sea. During the pivotal Battle of Tsushima, Suzuki was commander of Destroyer Division 4 under the IJN 2nd Fleet, which assisted in sinking the Russian battleship .