PROBLEM TO BE SOLVED: To provide a gas hydrate storage tank which is large and can be manufactured at low cost.;SOLUTION: The gas hydrate storage tank is composed of a plurality of unit tanks 6 where a plurality of partitions 5 are arranged at a predetermined interval in the tank main body 1 covered with a heat insulating material 3. A bottom of each unit tank 6 is made in a funnel shape and is provided with an outlet 9 connected to a drain device 19. In each unit tank 6, a temperature sensor 14 is arranged, and carry-in entrances for a cold/hot medium and gas hydrate are provided. A temperature signal of the temperature sensor 14 is introduced to a controller 15 so as to control the supply amount of the cold/hot medium.;COPYRIGHT: (C)2004,JPO&NCIPI
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