SYSTEM FOR SUPPLYING VOC AS FUEL FOR ENGINE AND VESSEL USING VOC AS FUEL

A VOC fuel supply system and method for supplying volatile organic compounds (VOCs) as fuel of an engine and a vessel using VOCs as fuel. The VOC fuel supply system includes: an engine operable in a gas fuel mode using a gas as fuel; a VOC supply unit supplying VOCs (Volatile Organic Compounds) as fuel to the engine; a fuel supply line connecting the VOC supply unit to the engine and defining a path for transfer of a gaseous VOC fuel from the VOC supply unit to the engine; and a drain filter provided to the fuel supply line upstream of the engine and filtering out recondensed liquid VOCs contained in the VOC fuel.