Hitachi is the eleventh engine builder in the Wärtsilä family of engine licensees to manufacture Wärtsilä RT-flex electronically-controlled common-rail marine engines. The other engine builders are in South Korea, Japan, China, Italy, Croatia and Poland. This additional manufacturing capacity from Hitachi enables Wärtsilä to serve the steadily and strongly growing world-wide demand for the popular RT-flex engine type. The six-cylinder Wärtsilä RT-flex50-B engine built by Hitachi will be delivered to Nanjing Wujiazui Shipbuilding Co Ltd in China. There it will be installed in a 1085 TEU container ship being built for a German owner. The engine has a maximum continuous power of 9,960 kW (13,560 bhp) at 124 rpm.