US company Agility Gas Technology is developing what it believes will be a game-changing VLEC-type ship for gas transport.

It is teaming up with compatriot Herbert Engineering Corp (HEC) to design a large atmospheric-pressure cryogenic-liquid chemical transport vessel.

"Specific designs are under development for very large volume liquid ethylene, ethane and propylene transport," it said.

Agility CEO Charles Matar added: "Our choice to engage HEC was an easy one since HEC has vast experience in naval architecture and engineering, including the design of very large liquefied gas carriers in support of LNG projects.”

The design does not have a refrigeration system, meaning a failure will never be an issue, the company said.

The "Jumbo" ethylene carrier will be 180,000 cbm, compared to the 35,000 cbm ships in the water now.