Abstract: A support structure for a self-standing storage tank used in a liquefied gas carrier ship is disclosed. The carrier ship comprises a hold for housing the storage tank. Between a bottom section of the tank and a bottom surface of the hold, lateral movement restraining devices for restraining the lateral movements of the tank and fore-aft movement restraining devices for restraining the longitudinal movements of the tank are disposed. Between a roof section of the tank and a roof surface of the hold, only lateral movement restraining devices are disposed.

Abstract: A rectangular-shaped self-standing liquefied gas storage tank carried in a low temperature liquefied gas carrier ship is disclosed. The tank is of an approximate box-shape having a bottom plate section, front and rear sections, two side wall sections, and a roof plate section. The carrier ship has bulkheads inside thereof, formed along the direction of the width of the carrier ship, to define holds for each of the tanks. The tank has reducing sections between the roof plate section and the lateral wall sections, which are directed toward the inner side of the tank and extend upwardly. Lateral movement restraining members are provided between the front wall section of the tank and one of the bulkheads of the carrier ship, and between the rear wall section of the tank and another bulkhead.