GTT has been selected by HD Korea Shipbuilding & Offshore Engineering on behalf of BW LNG to design cargo tanks for the industry’s first large-scale LNG carriers featuring a three-cargo-tank configuration.
The project covers four newbuild LNG carriers. Two vessels were ordered in November 2025, while two additional units were confirmed in May 2026. Deliveries are expected to start from the fourth quarter of 2028.
All four vessels will use GTT’s Mark III Flex membrane containment system. The system will be further enhanced to support higher standards of safety and structural performance.
The three-tank layout keeps the same principal dimensions, terminal compatibility, and loading and discharge parameters as a conventional 174,000 m3 LNG carrier. At the same time, the configuration increases tank length by up to 55% and raises cargo capacity by 3,000 m3 to 177,000 m3.
The design reduces the number of cargo tanks and is intended to optimize cargo capacity, reduce fuel consumption, lower emissions, simplify construction, and improve operational efficiency. Local membrane reinforcement also allows the vessels to load any cargo parcel size.
The vessels will have a guaranteed boil-off gas rate of 0.08% per day.
