The state-run outfit, which will likely need to undertake a formal tender for the units, has indicated to shipowners that it will seek four firm vessels in the 150,000-cbm to 180,000-cbm size range, along with offers on two optional ships.

Gail is likely to offer charter-hire periods of three years, with options to extend this business by two 12-month periods.

The company will be looking for delivery of the LNG carriers from early 2018 to ship 3.5