To provide a vessel that can transfer LNG without immersing a transfer pump into the LNG, providing a liquid discharge nozzle at the bottom of a pressurization tank or involving large heat entry.

A vessel includes: a pressurization tank 3 in which LNG is stored; pressurization means 5, 28 for supplying nitrogen gases whose condensation temperatures are lower than that of a natural gas and whose pressure is higher than that of the inside of the pressurization tank 3 and pressurizing the nitrogen gas to the pressurization tank 3; an LNG transfer pipe 7 for transferring the LNG in the pressurization tank 3 to the outside by pressurization by the pressurization means 5, 28; and a gas firing diesel engine to which the natural gas obtained by vaporizing the LNG guided from the LNG transfer pipe 7.