Abstract 854,708. Carrying liquefied gas. CONSTOCK LIQUID METHANE CORPORATION. April 26, 1957 [May 7, 1956], No. 41777/59. Divided out of 854,705. Class 113. A ship for the transportation of a liquid cargo which needs to be maintained at a low temperature comprises an outer hull 3, an inner hull 4 which defines a cargo space, cargo tanks 17 in said cargo space, and a thick layer 16 of a thermally insulating material between the cargo tanks and the inner hull, the tanks being anchored against lateral shifting by a rib or ribs 19 on the bottom of the tank received into a complementary recess in the layer of insulating material 16 beneath the tank. The bottom 6 of the inner hull may have a groove 20 coinciding with said recess to provide a uniform layer of insulation where the ribs extend therein. Specifications 781,354 and 854,706 also are referred to.