The utility model discloses a boats and ships dipmeter, including the fan -shaped chassis of invering, the circumference outward flange on fan -shaped chassis is carved with evenly distributed's scale, and the intermediate position of scale is 0 scale interval, the scale interval of both sides for corresponding inclination about the scale, the centre of a circle department on fan -shaped chassis installs the pendulum that can control the swing of free undamped, is locating to be provided with distance measuring sensor near pendulum pointer end, be provided with benchmark spare on the centre of a circle on fan -shaped chassis and the base -line of 0 scale interval, distance between the centre of a circle on distance, benchmark spare and fan -shaped chassis between the centre of a circle on distance measuring sensor and fan -shaped chassis equals, still be provided with data processing module, display module on the fan -shaped chassis, benchmark spare, distance measuring sensor, data processing module, display module connect gradually. The utility model relates to an instruct roll angle, high, the high boats and ships dipmeter of use reliability of pointing accuracy in succession.