The contract also includes an option to build two same class LNG ships.
The membrane-type LNG carriers will measure 228 m in length, 44.2 m in width and 26 m in depth, are scheduled to be delivered in the second half of 2014 and the first half of 2015.
The ships for LNG will feature the dual fuel diesel engine system, which allows the ship to run both on oil fuel or natural gas.