Hiei was the second and last vessel of the Kongō-class ironclad corvettes built for the Imperial Japanese Navy (IJN) in the 1870s. They were built in the United Kingdom because the Japanese were unable to build ironclad warships in Japan. She became a training ship in 1887 and made training cruises to the Mediterranean and to countries on the edge of the Pacific Ocean. The ship returned to active duty during the First Sino-Japanese War of 1894–1895 where she was damaged during the Battle of the Yalu River. Hiei also participated in the Battle of Weihaiwei and the invasion of Formosa in 1895. The ship resumed her training duties after the war, although she played a minor role in the Russo-Japanese War of 1904–1905. She was reclassified as a survey ship in 1906 and was sold for scrap in 1912.

An ironclad was a steam-propelled warship protected by steel or iron armor constructed from 1859 to the early 1890s. The ironclad was developed as a result of the vulnerability of wooden warships to explosive or incendiary shells. The first ironclad battleship, Gloire, was launched by the French Navy in November 1859, narrowly preempting the British Royal Navy. However, Britain built the first completely iron-hulled warships.