Apparatus and mthod for supplying fuel gas in lng carrier

The present invention relates to an apparatus and method for supplying fuel gas to an LNG carrier, and is conventionally installed for propulsion of a vessel in an LNG carrier without using a separate compressor and other heat exchange equipment to supply fuel gas to a power generation DFDE engine. It is an object of the present invention to provide a fuel gas supply apparatus and method for LNG carriers configured to use the elements. To this end, the present invention is an apparatus for supplying fuel gas to an LNG carrier, which is a device for supplying fuel gas to a ship propulsion engine and a power generation engine in an LNG carrier that loads and transports LNG into an LNG storage tank. A propulsion fuel gas supply line connected from a lower part to the ship propulsion engine, a high pressure pump installed in the middle of the propulsion fuel gas supply line, a high pressure vaporizer installed in the propulsion fuel gas supply line at a rear end of the high pressure pump; And a power generation fuel gas supply line branched from the middle of the propulsion fuel gas supply line at the rear end of the high pressure vaporizer and connected to the power generation engine, and a pressure regulating means installed in the middle of the power generation fuel gas supply line. It is.