- Source: Q-Flex
Q-Flex is a type of ship, specifically a membrane type liquefied natural gas carrier.
Technical description
Q-Flex vessels are propelled by two slow speed diesel engines, which are claimed to be more efficient and environmentally friendly than traditional steam turbines. Q-Flex carriers are equipped with an on-board re-liquefaction system to handle the boil-off gas, liquefy it and return the LNG to the cargo tanks. The on-board re-liquefaction system reduces LNG losses, which produces economic and environmental benefits. Overall, it is estimated that Q-Flex carriers have about 40% lower energy requirements and carbon emissions than conventional LNG carriers.
The capacity of a Q-Flex vessel is between 165,000 m3 and 216,000 m3. Until the entry into service of the Q-Max-type carrier, it was the world's largest LNG carrier type with a capacity of 1.5 times that of conventional LNG carriers.
Contractors
The first Q-Flex LNG carrier was delivered by Hyundai Heavy Industries in late 2007. The installed re-liquefaction system is developed and delivered by Hamworthy and approved and certified by DNV. Q-Flex LNG carriers are built also by Daewoo Shipbuilding & Marine Engineering Company and Samsung Heavy Industries.
Ships
As of 2022 there are 31 named Q-Flex LNG carriers in service.
All these vessels are owned by holding companies established by the Qatar Gas Transport Company (Nakilat) and different shipping companies such as Pronav, MOL, K-Line, Teekay and NYK and they are chartered to Qatar's LNG producers QatarEnergy LNG.
References
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