Image Credits: GTT GTT announces that it has been selected by HD Korea Shipbuilding & Offshore Engineering (HD KSOE), on behalf of the ship-owner BW LNG, for the tank design of the world’s first large-scale LNG carriers featuring a three-cargo-tank configuration. This new design will equip four new buildings: two vessels already ordered in November 2025 and two additional vessels ordered in May 2026. These four LNG carriers will be fitted with the well-proven GTT Mark III Flex membrane containment system with enhanced safety and structural integrity and are scheduled for delivery from the fourth quarter of 2028. These three-tank LNG carriers represent a new-generation vessel concept based on a proven design. The vessels deliver enhanced cargo efficiency and operational performance, enabling the lowest possible unit freight cost and reduced emissions. A new-generation three-tank configuration with increased cargo capacity and improved flexibility This innovative three-tank design is the result of close collaboration between GTT, the shipyard and ship-owner BW LNG, with targeted reinforcements and design enhancements to deliver performance beyond that of a conventional four-tank 174,000 m³ LNG carrier. The simplified vessel architecture enables a significant increase in tank length of up to 55%, while raising cargo capacity by 3,000 m³ to 177,000 m³. Similar to the conventional 174,000 m³ LNGC configuration, the vessels will have the same principal dimensions, terminal compatibility, loading and discharge parameters and by means of local membrane reinforcement the vessel can load any cargo parcel size – offering cargo owners full flexibility. Enhancing performance with lower boil-off rate Combining technological innovation with enhanced cargo handling and reliquefication capabilities, the three-cargo-tank design improves cargo utilisation and vessel performance. By optimising the ratio of LNG cargo volume to insulation surface area, the design improves therm