Ship heating device

The invention aims to provide a ship heating device which is energy-saving, environment-friendly, high in space utilization rate, low in cost and good in heating effect and does not influence the shipperformance. The ship heating device comprises a hot water jacket, a water suction pump, a hot water tank and an air conditioning unit; the hot water jacket is arranged on an exhaust pipe of a ship engine in a sleeving mode, the water suction pump is connected with a water inlet of the hot water jacket, a water inlet of the water suction pump is connected with a ship seawater inlet, and a heatingcoil is arranged in the hot water tank; a water outlet of the hot water jacket, the heating coil and the air conditioning unit are sequentially connected; a flow dividing assembly is arranged betweenthe heating coil and the air conditioning unit; a temperature sensor is arranged at the water suction pump; and the temperature sensor is in electric signal connection with the flow dividing assembly. The device is applied to