GTT receives four Approvals in Principle from ClassNK on its latest development projects in alternative fuels


Paris, Tokyo – March 7th, 2023. At a ceremony held during its seminar in Tokyo, GTT has been granted four Approvals in Principle (AiP[1]) from ClassNK, the leading classification society in Japan, on its latest development projects in alternative fuels:

  • The first one is for a concept of a 12,500 m3 LNG dual-fuel Very Large Crude Carrier (VLCC), fitted with GTT’s Mark III Flex system;
  • The second is for a concept of LNG fuel tanks with NH3-ready notation that includes material compatibility with NH3, risk assessment and boil-off gas management;
  • The third is for a concept of an 8,000 CEU[2] Pure Car and Truck Carrier (PCTC) LNG dual-fuel with NH3-ready notation;
  • And the last, for the RecycoolTM system applied to LNG-fuelled vessels which enables the reliquefaction of evaporated LNG thereby helping reduce greenhouse gas emissions and improve economic efficiency.

Philippe Berterottière, Chairman and CEO of GTT, declared: “We are very pleased to have received these Approvals in Principle in person, at Tokyo. These certifications confirm the relevance of the research and innovation work carried out by GTT engineers and technicians. We thank ClassNK for their trust in our technologies on alternative fuels.”

Masaki Matsunaga, Corporate Officer & Director of Plan Approval and Technical Solution Division, ClassNK, said: It is a great honour to welcome GTT’s team back to Japan and hand over four AiPs for their innovative and inspiring concepts pursuing low and zero carbon shipping upon our rigorous verification process, in line with the appropriate standards for each solution. We congratulate GTT on achieving these milestones and look forward to continuing our partnership with them in implementing sustainable energy initiatives.”

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About ClassNK
Established in 1899, ClassNK is a classification society dedicated to safety and environmental protection through third-party certification. ClassNK has conducted diverse technical services including surveys and classifications of ships and marine structures based on its own rules, international conventions on behalf of more than 100 flag states, management system certifications in line with ISO and other industry standards. ClassNK has committed to provide the industry with its full support to pave the way for digitalization and decarbonization challenges through the expanding certification service and R&D with industry partners.
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[1] An Approval in Principle (AiP) is an independent assessment of a concept within an agreed framework, confirming that the design is feasible, and no significant obstacles exist to prevent the concept from being realised.

[2] Car Equivalent Unit.