The invention relates to a novel hot-water boiler device for ships. The device comprises a device body (1), a smoke inlet channel (2) and a smoke outlet channel (3), and the device body (1) comprises an upper division plate (4) and a lower division plate (5); the upper division plate (4) and the lower division plate (5) divide the device body (1) into an upper area, a middle area and a lower area which are independent of each other; the smoke inlet channel (2) is communicated with the lower end of the middle area in the device body (1); the smoke outlet channel (3) is communicated with the upper end of the middle area in the device body (1); the device further comprises a cold water storage tank (7) and a cold water inlet pipe (9). The novel hot-water boiler device is suitable for hot water supplying on the ships.