Dangerous part calculation program, dangerous part calculation method, and dangerous part calculation device

摘要

The dangerous point calculation program causes the computer to extract the closest approach time included in the predetermined time from the risk value information. The risk value information is the closest position and the closest time of the first ship and the second ship, and the risk indicating the possibility that the first ship and the second ship collide at the closest position and the closest time. The value is stored in association with the value. In addition, the dangerous point calculation program causes the computer to acquire, from the risk value information, the closest approach position and the risk value corresponding to the extracted closest approach time, and determine which sea area the acquired closest position belongs to. . In addition, the dangerous point calculation program causes the computer to total the risk value corresponding to the closest approach position for each sea area to which the determined closest approach position belongs.