SYSTEM FOR SUPPLYING FUEL GAS IN SHIP

Disclosed is a system for supplying fuel gas in a ship. An embodiment of the present invention may provide a system for supplying fuel gas in a ship, comprising: a first storage tank which accommodates liquefied natural gas and natural evaporation gas of the liquefied natural gas; a second storage tank which accommodates liquefied ethane gas and ethane evaporation gas of the liquefied ethane gas; a first fuel gas supply line which evaporates the liquefied natural gas in the first storage tank and supplies the same to a first engine; and a second fuel gas supply line which supplies the ethane evaporation gas of the second storage tank to a second engine.