Three of the world’s largest LNG-carriers successfully tested their propulsion packages at the end of last month. Each vessel is powered by two 6S70ME-C electronically controlled, two-stroke, lowspeed diesel engines, and this event marks a first for MAN Diesel in the LNG sector. The engines will operate on HFO. The vessels are part of a Qatargas project that comprises an impressive 45 vessels, each fitted with two MAN B&W low-speed prime movers, making for a grand total of 90 electronically controlled two-stroke engines. Of these, 31 QFlex carriers will receive two MAN B&W 6S70ME-C engines, each developing 18,660 kW, while the 14 larger QMax carriers will employ two MAN B&W 7S70ME-C engines, each rated at 21,770 kW at 91 rpm.