
GTT Inside, la newsletter de GTT
Message from Philippe Berterottière, Chairman & CEO of GTT
Dear readers,
Innovation is at the very heart of GTT’s mission, and this new edition of GTT Inside offers a perfect illustration of how our teams relentlessly push the boundaries of technology to support the maritime energy transition.
From the launch of GTT CUBIQ™, a chamfer-free LNG fuel tank concept designed to simplify construction and optimise performance, to our advanced pipe stress analysis methods ensuring the highest safety standards on LNG carriers, we are proud to showcase solutions that combine technical excellence with practical value for shipyards and ship-owners.
We also highlight our progress in 1 barg tank design pressure for LNG bunker vessels, a breakthrough concept that enhances operational flexibility while ensuring uncompromised safety. Beyond LNG, GTT continues to play a decisive role in shaping the future of ethane transportation, supporting the growing fleet of Very Large and Ultra Large Ethane Carriers with membrane technologies, which improve efficiency, reduce costs, and open new opportunities for our customers.
These achievements are the result of a strong commitment: listening to our partners, anticipating regulatory changes, and translating operational feedback into ever more reliable, efficient, and sustainable solutions.
Enjoy your read.
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TECH IN FOCUS
GTT CUBIQTM, A Chamfer-Free Membrane LNG Fuel Tank: Simpler Design, Greater Value
GTT has developed a new LNG tank concept, GTT CUBIQTM, specifically designed for merchant vessels, with a focus on LNG-fuelled container ships. Drawing on several years of operational feedback from in-service vessels, the concept combines lessons learned at sea with advances in sloshing methodology, tank engineering refinements, and a close alignment with evolving regulations.
TECH IN FOCUS
Keeping LNG Carriers Safe: The Importance of Pipe Stress Analysis
At GTT, ensuring the integrity of cryogenic pipe networks is a core part of our contribution to LNG carrier design. These systems, which carry LNG at extremely low temperatures, present unique engineering challenges. Among them, pipe stress analysis is essential - not only because it is required by the IGC Code, but also because it helps prevent leaks, ruptures, and other failures that could affect the vessel, its crew, the environment, and the cargo.
PIONEERING PROGRESS
Advancing LNG Bunker Vessel Design: The 1 Barg Tank Design Pressure Upgrade
As the LNG bunkering ecosystem evolves, with new supply chain dynamics, stricter regulations, and greater competition among suppliers - designers of LNG cargo systems must adapt their solutions. In this context, GTT has introduced the 1 barg tank design pressure solution, providing LNG bunker vessels with greater flexibility, regulatory compliance, and cost efficiency.
PIONEERING PROGRESS
GTT Membrane Technology Driving the Next Generation of Ethane Carriers
Since the launch of Ethane Crystal, the first 87,000 m³ membrane-type Very Large Ethane Carrier (VLECs), GTT has established itself as a key player in the ethane carrier market. Today, membrane ethane carriers are an integral part of the industry, with the first units already completing their initial special surveys.
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