- Business
- Gaztransport & Technigaz SA (GTT) is a French multinational engineering company specializing in the design and supply of advanced membrane containment systems for the maritime transport and storage of liquefied natural gas (LNG) and other cryogenic gases. The company’s core products include proprietary membrane technologies such as Mark III, NO96 Max, and GTT Flex containment systems for LNG carriers, ethane carriers, floating storage units, and LNG as fuel vessels. GTT also provides engineering, consultancy, training, maintenance support, and digital solutions for fleet performance and safety optimization in the maritime sector. Headquartered in Saint-Rémy-lès-Chevreuse, France, GTT operates globally, serving shipbuilders, shipowners, and offshore LNG infrastructure developers.
Founded in 1963, GTT originated from a merger between Gaz de France and Technigaz, evolving into the sole supplier of maritime containment tanks for LNG worldwide. The company’s technologies are recognized for innovating thermal insulation and safety in LNG transport, with additional focus on products for liquefied petroleum gas transport. GTT’s business segments include LNG newbuilds, retrofit solutions for ship fleet renewals and emissions reduction, and a growing digital division offering vessel performance management systems derived from recent acquisitions.
Notable recent changes include GTT’s acquisition of Danelec, a Danish leader in maritime digital solutions, completed in 2025 for approximately €194 million, strengthening GTT’s leadership in digital safety and performance solutions across a large installed base of over 17,000 vessels. GTT has announced the launch of new technologies such as the market-ready GTT Cubiq™ design for commercial vessels and the SloShield™ system for LNG carriers, developed with Ascenz Marorka. The company also formed strategic alliances, including a partnership with Bloom Energy and Ponant Explorations for integrated energy systems aimed at sustainable shipping innovations. In 2025, GTT reported a 29% increase in revenue compared to the previous year, raising its full-year financial guidance in light of sustained strong order intake for LNG carriers and related vessels. GTT maintains a commitment to dividend payouts of at least 80% of consolidated net income. Its order book remains robust, comprising hundreds of units across LNG newbuild, ethane carriers, floating LNG, and LNG as fuel segments.
GTT’s geographic reach is global, with significant activity centered on shipyards and LNG projects in the United States, Europe, and Asia. The company’s growth is supported by rising LNG demand, fleet modernization driven by environmental regulations, and expansion into digital solutions for vessel safety, efficiency, and decarbonization.
Through its combination of proprietary cryogenic containment technologies, digital offerings, and strategic partnerships, Gaztransport & Technigaz positions itself as a leading technology provider in the liquefied gas maritime industry, advancing both traditional LNG transport capabilities and innovative sustainable shipping solutions.