A device for spherical ship's tanks (1), especially for liquid natural gas, comprising discharge pipes and filling pipes (3, 4 respectively) which extend vertically and centrally in the tank (1). The upper part of the pipes (3, 4) is attached to the tank and they extend down to the bottom (11) of the tank (1), being suspended in the tank, and the bottom part being passed slidably into respective muffs (15), which are permanently connected to the tank bottom (1). Between the pipes (3, 4) there extend cross-members (5, 6), these together with the pipes (3, 4) forming a truss beam.
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