Containment system (LNGC)

The cargo containment system of an LNG carrier holds the cargo at about minus 163 degrees Celsius and is regulated under the IGC Code. Two families dominate: membrane systems, where a thin primary barrier of stainless steel or Invar is backed by load-bearing insulation against the inner hull, in the GTT NO96 and Mark III designs; and the Moss self-supporting spherical type. Membrane systems give better hull-volume use and now hold most of the fleet, while the spherical type tolerates partial filling well and is visually distinctive.