LNG Carrier
E4. Cruise, offshore energy and auxiliary/specialised fleetsDefinition
Vessel carrying liquefied natural gas at -162°C.
An LNG carrier transports natural gas liquefied at about minus 162 degrees Celsius and near atmospheric pressure, reducing volume roughly 600-fold. Containment is by membrane systems (GTT Mark III and No96) or self-supporting Moss spherical tanks, with cargo kept cold by managed boil-off. The boil-off gas is burned in dual-fuel or steam propulsion or reliquefied. Construction and operation follow the IGC Code, and modern ships meet MARPOL Annex VI energy-efficiency rules. Sizes run from small coastal carriers to Q-Max units near 266,000 cubic metres.
Source: IMO IGC Code