MAN Diesel & Turbo’s G50 engine has passed its type approval test at Mitsui in Japan. Upon entering service, the engine will power the world’s first ethane-fuelled liquefied ethane gas (LEG) carrier – the first of three such vessels to be built in China by SinoPacific Shipyard for the German shipowner, Hartmann Reederei.
Besides operating on ethane, the 36,000m3 cargo capacity ship’s engine will be able to operate on HFO, MDO and gas oil. Propulsion efficiency will be further improved by employing a MAN Kappel propeller with rudder-bulb system.
The G50 was developed with an eye on reducing production costs. It is lighter and shorter in length than its predecessor, while still being able to boast the same power output.
The main part of the test was carried out using MGO, but its gas system also completed a pressure and function assessment. The first test burning ethane gas will take place in Texas at a later date.
The successful completion of the approval tests follows an order for five 85,000 m3 ‘Eco Star 85K’ Very Large Ethane Carriers (VLECs) by a JACCAR/Hartmann Reederei joint venture. These will each be powered by a single MAN B&W 6G60ME-GIE main engine and meet IMO’s Tier III NOx requirements through the use of MAN’s exhaust gas recirculation system.
This latest order brings the total of ethane-burning engines on order with MAN Diesel & Turbo to eight with, the company reports, more in the pipeline.