The vessels will be built at HD Hyundai Heavy Industries Co. Ltd in South Korea and will be delivered from 2028.

The vessels will be equipped with a next-generation X-DF2.1 iCER, VCR system, dual-fuel, low-speed diesel engine that uses fuel oil and boil-off gas (LNG vaporised in the cargo tanks during navigation) for the main engine, and a reliquefaction system that can use surplus boil-off gas effectively. The vessels will have a 200 000 m3 capacity membrane-type tank that uses advanced insulating materials to realise superior efficiency and economical LNG transportation.