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Compare LNG vessels and containment systems

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Attribute	Q-Max The largest LNG carriers ever built by cargo volume.
Operational role	Conventional Ocean-Going LNG Carrier
Containment system	GTT Mark III Membrane · GTT NO96 Membrane
Capacity class	Q-Max (indicative: approximately 260,000–266,000 m³)
Indicative capacity	263K–266K m³
Tank geometry	Hull-conforming prismatic membrane tanks
Typical application	Maximum-scale long-haul trades between a small number of compatible terminals
Hull-space efficiency	High — the largest membrane cargo blocks afloat
Infrastructure requirements	A limited set of terminals with the deepest berths and largest send-out capacity
Propulsion options	ME-GI · DFDE / TFDE
BOG management	Reliquefaction · BOG as fuel
Advantages	Lowest unit transport cost on very long, stable trade lanes — Fewer port calls for the same annual delivered volume — Twin-screw redundancy for high schedule reliability
Limitations	Only a limited number of terminals worldwide can receive the class — Canal and channel constraints shape routing options
Typical routes	Ras Laffan – United Kingdom · Ras Laffan – Italy · Ras Laffan – China

The largest LNG carriers ever built by cargo volume.

Operational role: Conventional Ocean-Going LNG Carrier
Containment system: GTT Mark III Membrane · GTT NO96 Membrane
Capacity class: Q-Max (indicative: approximately 260,000–266,000 m³)
Indicative capacity: 263K–266K m³
Tank geometry: Hull-conforming prismatic membrane tanks
Typical application: Maximum-scale long-haul trades between a small number of compatible terminals
Hull-space efficiency: High — the largest membrane cargo blocks afloat
Infrastructure requirements: A limited set of terminals with the deepest berths and largest send-out capacity
Propulsion options: ME-GI · DFDE / TFDE
BOG management: Reliquefaction · BOG as fuel
Advantages: Lowest unit transport cost on very long, stable trade lanes — Fewer port calls for the same annual delivered volume — Twin-screw redundancy for high schedule reliability
Limitations: Only a limited number of terminals worldwide can receive the class — Canal and channel constraints shape routing options
Typical routes: Ras Laffan – United Kingdom · Ras Laffan – Italy · Ras Laffan – China

Technical information

Technical parameters are indicative and may vary by vessel design, generation, shipyard, operator and intended service.