Naval wargame for battles in Russo Japanese war 1904-1905. The game title means Battle of Tsushima in Japanese, but game covering five major battles in the war. Players control either Japanese or Russian fleet. In Each turn, each player conduct one movement phase and two fire combat phase. Fire combat is using classical odds ratio combat result table and two dice. Based on the historical result of Tushima, Japanese Navy has various advantage. Victory condition is vary by scenarios.