News

Paris, 5 June 2025 - GTT announces the signing of two Joint Development Projects (JDPs) with HD Hyundai Heavy Industries (HHI), aimed at advancing the design of LNG carriers. This new collaboration is paving the way towards an optimised membrane-tank integration to enhance onboard ergonomics and vessels’ operational performance.

These projects reflect a shared commitment to developing practical, forward-looking solutions that meet the evolving technical, economic, and environmental requirements of the maritime industry.

The two JDPs will focus on the following areas:

- Convergent trapezoidal cargo tank No. 1[1]

A forward tank concept of convergent trapezoidal form for LNG carriers, fitted with GTT’s Mark III membrane system. This pioneering geometry will allow a superior adjustment to the hull compared with conventional constant section tanks, thus optimising cargo capacity.

- Flush deck liquid dome

An innovative flush deck liquid dome design, located at the interface between the membrane tank and the cryogenic piping. This concept improves trunk-deck ergonomics, simplifies on-board piping, and facilitates maintenance.

Philippe Berterottière, Chairman and CEO of GTT, declared: “These two new joint development projects undertaken with HHI testify to our shared ambition to design pragmatic innovations aligned with the environmental, economic and technical requirements of liquefied natural gas maritime transport. We have a duty to drive these technologies forward and maintain a steady momentum of innovation.”

Ryu Hong-Ryeul, Head of the Technology Division at HD Hyundai Heavy Industries, said: “We are pleased to be working with GTT on these meaningful projects. Our combined expertise allows us to innovate and refine vessels for optimal energy efficiency and enhance ergonomics, streamlining the supply chain just as demand for LNG carriers continues to grow.”