Method for lng carrier operation

The invention provides a method which relates to an operation method of an LNG carrier, and to supply boil-off gas generated in the LNG storage tank of the LNG carrier to the main propulsion unit is used as fuel for a ship propulsion and handling boil-off gas operation the LNG carrier, if in excess of the amount of fuel used in the propulsion of the ship from the main propulsion device and the amount of boil-off gas generated in the LNG storage tank, and installing the shaft generator the intermediate shaft between the main propulsion devices and the propeller, by further moving the main propulsion device, but processing using the boil-off gas of the residue as a fuel of the main propulsion unit of the output increment of the main propulsion units caused by the use of the boil-off gas of the residue as a fuel for power generation of the shaft generator It characterized by using. Main propulsion device, the boil-off gas, generator shaft