A repair ship is a naval auxiliary ship designed to provide maintenance support to warships. Repair ships provide similar services to destroyer, submarine and seaplane tenders or depot ships, but may offer a broader range of repair capability including equipment and personnel for repair of more significant machinery failures or battle damage.
USS Medusa was the first United States Navy ship built as a repair ship.
With a capable crew of qualified repairmen, USS Vulcan was kept in good repair for a long service life.
Asahi was a pre-dreadnought battleship built for the Imperial Japanese Navy (IJN) in the late 1890s. As Japan lacked the industrial capacity to build such warships itself, the ship was designed and built in the United Kingdom. Shortly after her arrival in Japan, she became flagship of the Standing Fleet, the IJN's primary combat fleet. She participated in every major naval battle of the Russo-Japanese War of 1904–1905 and was lightly damaged during the Battle of the Yellow Sea and the Battle of Tsushima. Asahi saw no combat during World War I, although the ship participated in the Siberian Intervention in 1918.
Asahi at anchor about 1906
Right elevation and plan of the Shikishima-class battleships and the battleship Asahi from Brassey's Naval Annual 1915. Unlike the drawing, Asahi had only two funnels.
Asahi on completion in 1900
Asahi off Shanghai in the late 1930s