SEMT Pielstick
Both ships were powered by four CODAD Type 16 PA6 STC marine diesel engines designed by SEMT Pielstick, each generating 6,330 hp. Licenses for the engines were sold to China in April 2002, where they were built by the Shaanxi Diesel Engine Factory. Other reports claimed each ship was powered by two (or four) Type 16 PA STC and two MTU 20V 956TB92 diesels.