Hazardous part and time calculation method, dangerous part and time calculation device and dangerous part and time calculation program

摘要

The hotspot calculation device (10) is an action indicating that each ship may have avoided a collision with another ship based on the trajectory data of a plurality of ships belonging to a predetermined area. Detect with. The hotspot calculation device (10) calculates an evaluation value indicating the possibility that the avoidance maneuvering by one of the two vessels has occurred under the influence of the avoidance maneuvering by the other. The hotspot calculation device (10) can more appropriately recognize hotspots that match the on-site feeling by calculating the collision risk in an area where a plurality of avoidance maneuvers are densely packed based on the calculated evaluation value. It becomes.