Steel warships of the early 1880s demonstrate tumblehome. France particularly promoted the design, advocating it to reduce the weight of the upper deck, as well as making the vessel more seaworthy and creating greater freeboard.[2] France sold their newly constructed pre-dreadnought battleship Tsesarevich to the Russian Imperial Navy in time for it to fight as Admiral Wilgelm Vitgeft's flagship at the Battle of the Yellow Sea on 10 August 1904. The Russo-Japanese War proved that the tumblehome battleship design was excellent for long distance navigation, but could be dangerously unstable when watertight integrity was breached.[3] Four tumblehome Borodino-class battleships, which had been built in Russian yards to Tsesarevich's basic design, fought on 27 May 1905 at Tsushima.