A marine LNG(liquefied natural gas) regasification of a LNG-RV and a LNG transmission method are provided to improve safety by performing LNG regasification and LNG transmission while avoiding dangers to be generated from gas leakage and the others. A method for transmitting regasificated NG to a ground piping comprises the steps of: connecting piping of a marine LNG regasification device and a ground piping by means of a piping connection device, regasifying LNG and transmitting regasificated NG through the piping connection device to the ground piping and discharging NG remained inside the pipe of the piping connection device to the outside, prior to separation of the piping connection device.
展开▼