MAN 51/60 Dual Fuel Engines for Russian LNG Carrier
The Russian Sovcomflot (SCF Group) ordered two 116,00 GT ice2 class (Russian Maritime Register of Shipping) LNG carriers last year with STX Offshore & Shipbuilding shipyard, S.Korea. The design is for “Atlantic-max” carriers with a cargo capacity of 170,200 cubic meters using a reinforced membrane structure. Vessels of this capacity have a LOA of 980 ft (299 m), beam of 150 ft (45.8 m) and draft up to 41 ft (12.5 m).
Caption: Artist impression of the Somcomflot 170,200 m3 LNG carrier MT Velikiy Novgorod
image credit: Sovcomflot
The new vessels are due to enter service, the MT Velikiy Novgorod in the fourth quarter of 2013 and the second vessel, the MT Pskov, in second quarter 2014. An option for two more ships of the same class has been taken up for delivery end 2014 and early 2015. It is planned that the new ships will enable a near all year round export service from Russia’s first LNG terminal at Sakhalin-2, and at a later date from the Shtokman LNG terminal.
As the price of gas increases a dual fuel engine capability allows the choice of running the engines using HFO or the boil-off gas for propulsion and re-liquefy unused boil-off gas by means of a re-liquefaction plant.
The vessels use a dual fuel electric propulsion system comprising four MAN engines allowing a top speed of 19.5 kn. To allow flexibility and operation of the engines at their optimum efficiency a “mix” of two 8L51/60DF engines of 8MW at 514 rpm and two 9L51/60DF engines of 9MW at 514 rpm was specified. The engines will be built at the MAN Augsburg factory for delivery end 2012.
Caption: a MAN 7L51/60DF dual fuel engine during final testing at the Augsburg factory.
image credit: MAN Diesel & Turbo SE