Annual rank50
France · Energy
GTT
GTT provides containment systems for shipping and storing LNG under cryogenic conditions.
FY2022–FY2025
FY2022–FY2025
FY2022–FY2025
current context only
Company profile
A membrane design licensed around the world
GTT designs and licenses the thin membrane systems that contain liquefied gases inside ships and floating facilities. It does not build or operate the vessels: licensed shipyards and outfitters erect the systems, while the order book separately identifies the shipowners. Around that specialist design business, GTT provides engineering, training and maintenance, and its GTT Marine division connects onboard equipment with voyage and performance data.
Cryogenic engineering
Two membranes, two ways to manage cryogenic contraction
At LNG temperatures, metal contracts. Mark III handles movement with a corrugated 1.2 mm 304L stainless-steel primary membrane above a composite secondary membrane and insulation panels. NO96 instead uses two identical 0.7 mm Invar membranes: one contains the cargo and the second provides 100% redundancy. Both systems are supported by insulation and the hull, while later variants reduce heat ingress and boil-off. The two short films make the contrasting geometries visible.
- Open the Mark III system Corrugated stainless steel, composite backup and insulation
- ▶ VideoWatch Mark III move Language-neutral official animation of the membrane geometry
- Open the NO96 system Twin 0.7 mm Invar membranes and full secondary redundancy
- ▶ VideoWatch NO96 assembled Language-neutral official animation of the tank layers
Gases and vessel missions
One membrane idea, several cargos and missions
GTT adapts containment designs for LNG carriers, ethane and multigas ships, floating storage and regasification units (FSRUs), floating LNG-production units (FLNGs) and LNG bunker vessels. Ethane carriers can also handle gases such as propane, butane, propylene and ethylene; an LNG Cargo Ready notation anticipates a possible conversion. GTT MARS takes a different single-membrane approach for LPG at −55 °C to 0 °C. These are licensed applications, not GTT-owned vessels or terminals.
- See LNG bunker vessels Fuel-supply vessel designs and ship-to-ship transfer constraints
- Explore multigas flexibility Ethane, other cargos and the LNG Cargo Ready notation
- See floating storage and regasification FSRU and FSU designs, conversions and operating flexibility
- ▶ VideoWatch the LPG design English official film on the single-membrane GTT MARS concept
Licence network and demand
GTT sells design rights and technical help, not ships
GTT provides designs, licences and technical assistance; licensed shipyards and outfitters erect its membrane systems, while GTT's order book separately identifies the shipowners. The group reports relationships with around thirty shipyards across Asia, Europe and the United States. In H1 2026, GTT recorded 65 orders: 56 LNG carriers, two very large ethane carriers, five onshore tanks, one FSRU and one FLNG. The core order book represented EUR 1.853 billion of secured revenue scheduled from H2 2026 through 2029 and beyond. Six further Mark III Flex carrier tank-design orders were announced in August: two on 19 August and four on 25 August. These are future work, not a delivered fleet.
- Meet the licensed yards Shipyards, outfitters and the construction boundary by country
- Open the H1 order mix Sixty-five orders and secured revenue through 2029+
- Open the 19 August carrier order HD KSOE, Tsakos, two Mark III Flex ships and 2029 delivery
- See the latest four-carrier order Jiangnan, ADNOC L&S, Mark III Flex and 2029 delivery
- Separate orders from built vessels The historical reference list uses a different boundary
- Check the group at a glance Official key figures and the around-thirty-yard wording
Before the keel and after delivery
Specialist studies become a vessel-data platform
Before construction, GTT can provide concept design, front-end engineering design (FEED), cargo-handling engineering and studies of boil-off gas, sloshing, transfers, cargo mixing and conversions. After delivery, GTT Marine combines Danelec, Ascenz Marorka and Vessel Performance Solutions; the portfolio spans voyage data recorders, data acquisition, voyage optimisation, performance analytics and fleet oversight. The group reports more than 17,000 marine and digital solutions deployed worldwide; that figure counts solutions, not 17,000 vessels. In July 2026, a PETRONAS-chartered LNG carrier fleet selected the integrated suite for data acquisition, performance monitoring, voyage optimisation, 24/7 Fleet Centre support and cargo monitoring; the number of vessels was not disclosed.
- Open the PETRONAS fleet suite Data, performance, route, 24/7 support and cargo monitoring
- See the engineering studies FEED, conversions, boil-off, sloshing and cargo operations
- Meet GTT Marine Danelec, Ascenz Marorka, VPS and the 17,000-solution boundary
- Follow data from ship to shore Onboard collection, voyage tools and managed services
- Open the Insights Platform One environment for vessel data, analytics and safety signals
Official profile sources: 60 years of accumulated experience | GTT · GTT technology · An engineering company in containment systems for transport and storage of LNG | GTT
Current 2026 update
What is changing at GTT in 2026?
Three-tank carriers, a record-scale ethane-storage project and an integrated PETRONAS fleet suite make GTT's broader design-and-services model more visible in 2026.
The change in one sentence
GTT's membrane expertise is appearing across ship architecture, onshore storage and the vessel's operating life.
A new carrier layout, a 200,000 m³ multi-gas tank and an integrated digital fleet package show three applications of GTT's design and engineering model.
Four lenses on 2026
The same four-quadrant format used in the Company profile.
01 · Ship architecture
Three tanks carry more LNG within the same principal ship dimensions
GTT's Mark III Flex technology was selected for four BW LNG carriers with what the company calls the industry's first large-scale three-cargo-tank layout. Capacity rises to 177,000 m³ from the conventional 174,000 m³ reference while principal dimensions, terminal compatibility and loading parameters remain. Tank length increases by up to 55%; GTT says boil-off is about 6% lower than a four-tank design using the same technology. Delivery starts in Q4 2028. Core orders also continued in August: four Jiangnan/ADNOC L&S carriers and two HD KSOE/Tsakos carriers, all using Mark III Flex, are due in 2029.
- Current signal4 three-tank ships at 177,000 m³ · GTT-stated c. 6% lower boil-off · 6 further August carrier orders
- Why it mattersThe three-tank project changes carrier architecture while preserving terminal compatibility; whether the layout earns repeat orders remains unproven.
- Three-tank BW LNG design GTT · 20 May 2026
- Jiangnan/ADNOC four-carrier order GTT · 25 August 2026
- HD KSOE/Tsakos two-carrier order GTT · 19 August 2026
- H1 orders and secured revenue GTT · 28 July 2026
02 · Onshore storage
A 200,000 m³ membrane tank brings multi-gas storage ashore
China Chengda ordered GTT's GST membrane design for an onshore tank in Ningbo, Zhejiang, for Ningbo Union King. GTT describes it as the world's largest dedicated ethane-storage tank. The 200,000 m³ design can also store propane, butane and liquefied petroleum gas, with delivery scheduled for Q4 2028. The release identifies GTT as membrane designer; it does not make GTT the tank builder or operator.
- Current signal200,000 m³ · ethane plus propane, butane and LPG · Q4 2028 delivery
- Why it mattersThe order makes GTT's onshore and multi-gas applications more visible beside marine cargo tanks, while the company-defined superlative remains to be proven at delivery.
- Ningbo ethane storage tank GTT · 27 July 2026
- H1 orders and secured revenue GTT · 28 July 2026
03 · Digital fleet services
GTT Marine combines vessel data, route optimisation and cargo monitoring
A PETRONAS-chartered LNG carrier fleet selected an integrated GTT Marine suite covering data acquisition, performance monitoring, voyage optimisation with weather data and digital twins, round-the-clock Fleet Centre support and cargo monitoring. The number of vessels is not disclosed. The package brings Danelec, Ascenz Marorka and Vessel Performance Solutions together. In H1, GTT Marine revenue reached EUR 31.8 million, up 237.8%, and represented 8% of group revenue; The figure reflects full Danelec integration.
- Current signalH1 Marine revenue EUR 31.8m, +237.8% · 8% of group revenue · PETRONAS fleet size undisclosed
- Why it mattersThe contract shows GTT working after vessel delivery through integrated digital services; customer adoption, fleet scale and service economics remain only partly disclosed.
- PETRONAS integrated digital suite GTT · 23 July 2026
- H1 orders and secured revenue GTT · 28 July 2026
04 · What to watch
Three questions for the next disclosures
The next disclosures should separate ordered designs from delivered assets, company-defined performance claims from operating proof and digital-suite scope from undisclosed fleet scale.
- Shipyard schedulesDo carrier and tank projects remain on schedule, preserving the condition behind GTT's confirmed 2026 objectives?
- Repeat adoptionDo the three-tank layout and record-scale ethane tank win follow-on orders before their scheduled 2028 deliveries?
- Marine scaleDoes GTT disclose the PETRONAS fleet size, wider suite adoption and the revenue or margin contribution of recurring digital services?
Annual record
Ranking history
Future editions add rows; they do not rewrite the 2026 record.
| Edition | Measurement period | Rank | Revenue growth | Net-income growth | Stock return |
|---|---|---|---|---|---|
| 2026 | FY2022–FY2025 | 50 | +161% | +222% | +78% |