GTT and Hudong-Zhonghua Shipbuilding partner to optimise LNG bunkering vessels

Engineering firm GTT (Gaztransport and Technigaz) on Monday (30 June) said it has launched a joint innovation project with Hudong-Zhonghua Shipbuilding to optimise the design and performance of LNG bunkering vessels. 

GTT said the initiative aims to enhance operational efficiency and reduce operating costs by integrating advanced technologies and design improvements.

“At the core of this project is the increase of the effective pressure in LNG tanks using GTT’s Mark III Flex membrane containment system,” the company said.

“While the current industry standard sits at 0.7 barg, the partnership will enable a design pressure of 1 barg, leveraging on various approvals already received from Class Societies for this pressure.”

The company said this breakthrough will offer operators several key advantages:

• Extended operational flexibility: The ability to load LNG at higher temperatures as well as the possibility to speed up the LNG delivery.
• Improved energy efficiency: The reduction in the vessel’s electrical power consumption, particularly during stand-by periods, thanks to a lower use of its subcooler, an active equipment which keeps LNG cold.
• Regulatory compliance anticipated: The new design anticipates evolving environmental regulations, including Alternative Fuels Infrastructures Regulations (AFNIR) recommendations on cold-ironing, thanks to a significant increase in holding time.

“This partnership will also evaluate the technical feasibility of increasing the design pressure up to 2 barg. This collaboration reflects the shared commitment of GTT and Hudong-Zhonghua Shipbuilding to drive continuous innovation and support the maritime industry’s energy transition,” GTT added.

Photo credit: GTT
Published: 1 July, 2025