Object and purpose of research. This paper studies the process of liquefied natural gas (LNG) evaporation during storage, bunkering and accompanying operations. The work purpose consists in evaluation of LNG losses in course of its transportation that is required for economical estimation of its effectiveness, estimation of reasonability of LNG use as fuel in transport, as well as for design of bunkering barges. Materials and methods. The process of LNG evaporation is described using a thermodynamic model based on equations of heat exchange between the LNG liquid phase, its vapors, as well as a cargo tank and environment. The equations are solved in a computer imitating model realized in AnyLogic environment. The model reproduces both thermodynamic processes and random dynamics of ambient air temperatures. During the work mass numerical experiments with the thermodynamic model were performed, to analyze the results of which regressions analysis methods were used. Main results. Within the study a special simul