 After the First Sino-Japanese War, both "Naniwa" and "Takachiho" were re-armed with eight Elswick QF 6 inch /40 naval guns in order to increase stability and standardize on ammunition for the fleet.Propulsion was by two horizontal two-stage steam reciprocating engines, two-shafts, with six boilers, yielding a speed of and a range of at based on its capacity for 800 tons of coal.Two "Naniwa"-class cruisers were purchased from Armstrong Whitworth in England.