 During the war the Imperial Russian Navy in addition to their other warships, deployed 86 torpedo boats and launched 27 torpedoes (from all warships) in three major campaigns, scoring 5 hits.The Imperial Japanese Navy (IJN), like the Russians, often combined their TBs (which possessed only hull numbers) with their torpedo boat destroyers (TBDs) (often simply referring to them as "destroyers") and launched over 270 torpedoes (counting the opening engagement at Port Arthur naval base on 8 February 1904) during the war.The IJN deployed approximately 21 TBs during the conflict, and on 27 May 1905 the Japanese torpedo boat destroyers and TBs launched 16 torpedoes at the battleship , Admiral Zinovy Rozhestvensky's flagship at the battle of Tsushima.