Hull structure monitoring system and monitoring method

A hull structure monitoring system monitoring a shape of a hull of a ship, the system comprising:

• a plurality of sensor devices and an analysis device connected to each other via an inboard network of a ship,
• wherein each of the plurality of sensor devices targets some members constituting the hull as an object, measures tilt information of the object at each of a plurality of measurement points in different locations in one of two directions intersecting each other in the object, and outputs sensor data including the tilt information to the analysis device, and
• the analysis device receives sensor data from the plurality of sensor devices and acquires shape information of the object as analysis results by performing analysis processing including predetermined computation processing using the sensor data.