Okinoshima was decommissioned on 1 April 1922, used as a training ship for Sasebo Marine Corp, stricken on 1924, and was sold as monument in 1925 to "Battle of the Sea of Japan War Relic Preservation Committee", which planned on transforming her into a memorial ship located at Tsuyazaki, Fukuoka, commemorating the Japanese victory at the Battle of Tsushima.
Okinoshima was decommissioned in 1922, used as a training vessel for the Sasebo Marine Corps until it was scrapped and sold to a committee dedicated to preserving war relics from the Sea of Japan War. The committee planned to transform her into a memorial ship at Tsuyazaki, Fukuoka, commemorating the Japanese victory at the Battle of Tsushima.