884,718. Carrying liquefied gases. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N. V. Dec. 14, 1959 [Dec. 16, 1958], No. 42406/59. Class 113. [Also in Group XXVIII] In a tanker for transporting liquefied gases at atmospheric pressure having holds 5 with walls 3 integral with the tanker'"'"'s structure I, at least one hold is internally provided with loadbearing heat-insulating material 7 supporting at substantially all points under all temperature conditions a thin-walled flexible container 8 of a material resistant to low temperatures, e.g. stainless steel. The container has at least one bellows-shaped part 9 parallel to a vertical diaginal plane of the container and is provided with means 14, 15 for prestressing the bellows. The top of the container is protected by flexible heat-insulation 18 e.g. foamed glass. The insulation 7 comprises balsa wood 20, Fig. 6, secured to the container 8, layers of foamed glass 21, perlite concrete 22 and cork 23. To prevent the ingress of humid air and in formation, a dry inert gas such as nitrogen is supplied to the insulation through pipes 24. The spaces 28 around the holds may be filled with a liquid, e.g. oil, with means for heating same.