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As a result of particular locations of large-scale energy producers and increases in energy demand, transporting energy has become one of the key challenges of energy supply. For a long-distance ocean transportation, transfer of energy carriers via ocean tankers is considered as a decent solution compared to pipelines. Due to cryogenic temperatures of energy carriers, heat leaks into storage tanks of these carriers causes a problem called boil-off gas (BOG). BOG losses reduce the quantity of energy carriers, which affects their economic value. Therefore, this study proposes to examine the effects of BOG economically in production and transportation phases of potential energy carriers produced from natural gas, namely; liquefied natural gas (LNG), dimethyl-ether (DME), methanol, liquid ammonia (NH 3), and liquid hydrogen (H 2). Mathematical approach is used to calculate production and transportation costs of …