News

Paris, 4 February 2026 – GTT announces the signing of a Joint Development Project (JDP) with the shipyard HD Hyundai Heavy Industries focused on a 102,000 m³ Very Large Ethane Carrier (VLEC) featuring GTT’s Mark III Slim™ membrane containment system. This new project is paving the way towards an optimised membrane-tank integration to enhance hull design and vessel’s overall performance.

GTT’s Mark III Slim™ technology, an ethane-optimised cargo containment system, offers a more compact design, based on a thinner membrane, simplified anchoring arrangements and lighter panels and caissons. These features enable naval architecture optimisation, supporting further innovation in vessel hull design.

The JDP will focus on improving the VLEC’s hull geometry based on GTT’s membrane technology integration, aiming to enhance transport energy efficiency through improved hydrodynamic performance. Combined with an increase in cargo capacity enabled by the Mark III Slim™ technology, this integrated approach is expected to contribute to reduced fuel consumption and a reduction in CO₂ emissions per ton of ethane transported.

François Michel, CEO of GTT, commented: “For decades, GTT has been at the forefront of innovation in liquefied gas transport. Through this Joint Development Project with HD Hyundai Heavy Industries, we reaffirm our ambition to support more efficient vessels, in line with the technical, economic and environmental challenges currently shaping the maritime industry.”

Dong Jin Lee, Executive Vice President of HD Hyundai Heavy Industries, added: “As the ethane market continues to scale, leadership will be defined by the ability to innovate and partner effectively. By bringing together HD Hyundai Heavy Industries’ shipbuilding capabilities and GTT’s membrane technology expertise we strengthen our ability to deliver the next generation of high-performance VLECs, offering ship-owners and operators increasingly energy-efficient solutions.”

Investor relations contact: information-financiere@gtt.fr / +33 (0)1 30 23 20 87 / +33 (0)1 30 23 42 64
Media contact: communication@gtt.fr / +33 (0)1 30 23 56 37