Iwami was a Borodino-class pre-dreadnought battleship captured by Japan after the Battle of Tsushima on 27 May 1905.
Renamed Iwami, she was rebuilt between 1905 and 1907 and she was commissioned into the Imperial Japanese Navy on 2 November 1907. At the start of the Japanese intervention in Siberia during the Russian Civil War, she landed a company of marines in Vladivostok. She was reclassified as a first-class coast defense ship in September 1921 and was used as a training ship. In accordance with the terms of the Washington Naval Treaty, Japan agreed to scrap Iwami. She was disarmed in April 1922 and used as a depot ship until she was struck on 1 September. Iwami was moored to the west of the island of Jōgashima near the mouth of Tokyo Bay and used as a target by aircraft of the Yokosuka Naval Air Group from 5–8 July, finally sinking on 10 July 1924.