With the increase of LNG power ship, the facility and equipment of LNG fuel filling for LNG power ship have become an important problem. LNG filling vessel is a good development direction of LNG filling technology because of its advantages of self navigation ability, safety and reliability, flexible scheduling. According to the characteristics of LNG filling vessel cargo containment system, this paper explores the evaporation rate numerical prediction method under different loading conditions

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... liquid cargo tank, it can make quick calculations on the steady-state evaporation rate of different insulation thickness, and gets the corresponding thickness value of thermal insulation layer to guide the LNG filling vessel design. Through the research, it can be found that average daily evaporation rate of the C type cargo containment system declines with the declining of liquid level. The research results of this paper can provide technical support for the design of C type cargo containment system.