An insulated liquefied gas tank comprises a gas tank (1), connected to whose inner surface are a plurality of elongate stiffening members (1a) and whose outer surface is covered by an insulation layer (4) which comprises a plurality of insulation panels (10). Each panel (10) is connected to the tank by a single support member (9) which is connected to an associated mounting member which is connected to the tank at a position corresponding to that of a stiffening member (1a). Each support member passes through a respective single hole (11) in the associated panel (10) which is retained thereon by a respective fastening member (15) located on the outer end of the support member (9). The hole (11) is larger than the support member (9) and a cylindrical member (12) is provided between the mounting member (6) and the associated panel (10) to protect the latter. Positioned between each panel (10) and the tank (1) is a pad (13) whose width is less than that of the panel (10) and which extends in the direction of the length of the associated stiffening (1a), whereby the panel (10) is spaced from the tank (1) by a clearance (c). <IMAGE>
