In an effort to improve her stability, two of her 120-mm guns were removed around 1900–1901. However, "Akitsushima" was still considered underpowered, poorly-armored, and outgunned by the start of the Russo-Japanese War of 1904–1905, and was largely assigned to rear line duties, as part of the 6th division of the Japanese Third Fleet. She was based in out of the Takeshiki Guard District in the Tsushima islands, and assigned to patrols of the Korea Strait between Tsushima and Port Arthur against the Imperial Russian Navy cruiser squadron based in Vladivostok.