Monitoring method for box-shaped keel of ship in ice area

The invention discloses a method for monitoring a box-type keel of a ship in an ice region, which comprises the following steps: marking three monitoring positions distributed at intervals on the box-type keel, and one of the monitoring positions is located at a heavy-load waterline of a bow part of a ship body; at least one monitoring part is installed at each of the three monitoring positions, a vibration sensor of the monitoring part is used for detecting the vibration amplitude of the box-type keel and transmitting the detected vibration amplitude to a processor, and a temperature sensor is used for detecting the temperature of the box-type keel and transmitting the detected temperature to the processor; when the vibration amplitude detected by any vibration sensor is greater than a set amplitude, or the temperature detected by any temperature sensor is continuously increased to a set temperature within a set time length; reducing the ship body from the current navigational speed to a safe navigational sp