Eat a marine water detecting system and detecting method thereof

The present invention discloses a vessel to eat water detection system and detection method, said system comprising a floating body, winch device, a cable, a detection gate, the ultrasonic sensor array, the float position sensing subsystem, the cable angle sensor subsystem, data acquisition and transmission unit and error compensation data processing unit, a floating body is fixed to the anchor surface, through the detection gate rope hoisting apparatus suspended from the floating body detection gate water depth, winch means mounted to the winch device by adjusting two the upper side of the center of gravity of the float, the float placement be selected according to required detection. Since the present invention detects a door mounted on the floating body is movable, such that eat water detection system installation and easy maintenance, no longer relies on fixed infrastructure, no special requirements on the installation location, can be moved according to channel the water level and the actual demand. The present invention pivot angle and the length of data cable, the detection gate can draft ship attitude error compensation.