ABS and GTT held the general design approval ceremony on Monday at the LNG2026 event in Doha, Qatar.
According to ABS, the approval for GTT’s Next1 membrane containment system enables its application on LNG carriers.
In July 2024, GTT obtained a design approval (DA) from Bureau Veritas and a general approval for ship application (GASA) from Lloyd’s Register for the LNG cargo containment system.
GTT’s new technology aims to offer a thermal level of performance equivalent to that of Mark III Flex+ technology while using two metallic barriers.
The use of prefabricated reinforced polyurethane foam panels to support the two membranes provides the best compromise between thermal and mechanical performance, according to GTT.
Also, the secondary barrier is made of Invar, and the design of the first barrier is based on the existing corrugated stainless steel concept, similar to that of the Mark technologies.
By activating these design levers, it is possible to deliver significant performance improvements, while using proven materials and components, GTT claims.
GTT announced several tank design orders since the beginning of this year.
These include four LNG carriers with Samsung Heavy, seven LNG carriers with Hanwha Ocean tied to Knutsen, six LNG carriers with HD KSOE, and two LNG carriers with Hanwha Ocean.
