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Compare LNG vessels and containment systems

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Attribute	Membrane The volumetric workhorse behind most modern LNG newbuilds.
Operational role	Conventional Ocean-Going LNG Carrier
Containment system	GTT Mark III Membrane · GTT NO96 Membrane
Capacity class	Conventional (indicative: approximately 125,000–180,000 m³)
Indicative capacity	145K–180K m³
Tank geometry	Hull-conforming prismatic membrane tanks
Typical application	Baseload ocean transport between major liquefaction and import terminals
Hull-space efficiency	High — tanks follow the hull form and maximise cargo volume
Infrastructure requirements	Conventional deep-water LNG terminals
Propulsion options	ME-GI · X-DF · DFDE / TFDE · Steam turbine
BOG management	BOG as fuel · Gas combustion unit · Reliquefaction
Advantages	Best cargo volume per metre of hull, lowering unit freight cost — Very low boil-off with reinforced insulation systems — Broad shipyard availability and a deep spares ecosystem
Limitations	Filling-level restrictions on some systems to avoid sloshing loads — Primary barrier repairs require specialist yard capability
Typical routes	US Gulf – Northwest Europe · Qatar – India · Australia – China

The volumetric workhorse behind most modern LNG newbuilds.

Operational role: Conventional Ocean-Going LNG Carrier
Containment system: GTT Mark III Membrane · GTT NO96 Membrane
Capacity class: Conventional (indicative: approximately 125,000–180,000 m³)
Indicative capacity: 145K–180K m³
Tank geometry: Hull-conforming prismatic membrane tanks
Typical application: Baseload ocean transport between major liquefaction and import terminals
Hull-space efficiency: High — tanks follow the hull form and maximise cargo volume
Infrastructure requirements: Conventional deep-water LNG terminals
Propulsion options: ME-GI · X-DF · DFDE / TFDE · Steam turbine
BOG management: BOG as fuel · Gas combustion unit · Reliquefaction
Advantages: Best cargo volume per metre of hull, lowering unit freight cost — Very low boil-off with reinforced insulation systems — Broad shipyard availability and a deep spares ecosystem
Limitations: Filling-level restrictions on some systems to avoid sloshing loads — Primary barrier repairs require specialist yard capability
Typical routes: US Gulf – Northwest Europe · Qatar – India · Australia – China

Technical information

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