Ship and air supply system thereof

The utility model provides a ship and an air supply system thereof. The gas supply system comprises storage equipment, gasification equipment and heat exchange equipment. The storage equipment is used for storing liquid fuel; the gasification equipment is located between the storage equipment and the engine and used for receiving and gasifying the fuel and sending the fuel to the engine; the heat exchange equipment comprises a heat channel and a medium channel which can perform heat exchange; the heat channel is arranged at the downstream of the engine to receive circulating water of the engine; a medium is arranged in the medium channel and is an ethylene glycol aqueous solution; the medium receives heat of circulating water; an outlet of the medium channel is connected with the gasification equipment, and the medium with the temperature increased is conveyed into the gasification equipment so as to heat and gasify the fuel. A medium is heated through heat of circulating water, and then the heat is transferr