The shipyard said the owner is paying KRW 430bn ($413.1m) for the 173,400-cbm vessels.
The carriers will be delivered by February 2018, it added.
Earlier this year, BW launched BW Pavilion LNG with Pavilion Energy, which is a unit of Singapore’s sovereign wealth fund Temasek Holdings.
The Andreas Sohmen-Pao-led shipowner said the joint venture would “acquire, manage and charter” maritime LNG assets, including LNG carriers.
It