The RT-flex common-rail technology brings benefits to ship owners in terms of great flexibility in engine setting for lower fuel consumption, lower minimum running speeds, smokeless operation at all running speeds, and better control of other exhaust emissions. The RT-flex common-rail technology will also play a key role in meeting the need for tighter emissions control under the forthcoming IMO regulations. The ore carriers will be built by Rongsheng Shipbuilding & Heavy Industries of China. Each vessel will have a 7-cylinder Wärtsilä RT-flex82T low-speed engine with a contracted maximum continuous power of 29,400 kW at 76 rpm. The first of the ships is due for delivery in early 2011 and the twelve ships are expected to be completed in 2012.