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U.S. Department of Energy
Office of Scientific and Technical Information

Tank of a low temperature liquefied gas tanker ship

Patent ·
OSTI ID:5915713
Bridgestone Liquefied Gas Co., Ltd.'s new LNG cargo-tank design offers increased cargo-tank capacity and improved ship stability by relatively small free surface of the liquefied gas. The tank consists of a lower-membrane-tank portion with compression-resistant heat insulation and a rigid upper-tank portion with a fluid-tight connection to the lower-tank portion. The upper central section of the upper-tank portion extends upward beyond the deck level and is flexibly mounted on the deck. Partition walls can be easily mounted in the upper-tank portion to reduce oscillations of the liquid for improved ship stability. Since the horizontal cross section of the upper-tank portion is smaller, the free surface of the liquid is reduced.
Assignee:
Bridgestone Liquefied Gas Co., Ltd.
Patent Number(s):
US 3851611
OSTI ID:
5915713
Country of Publication:
United States
Language:
English