Abstract: According to an embodiment, there is provided a control method for autonomously berthing a ship including obtaining ship state information and berth information, setting a DP point; an approaching operation of controlling the ship to approach the DP point; and a dynamic positioning operation of adjusting a location and posture of the ship based on an error rate between the DP point and a current location of the ship.

Abstract: A method of calculating a collision risk of a ship according to an embodiment of the present disclosure may include: calculating an available velocity area based on maneuvering performance of a host ship; calculating a velocity obstacle area where there is a possibility of collision between an object and the host ship; and calculating a collision risk based on at least one of the available velocity area, the velocity obstacle area, and a preset weight.

Abstract: A device according to an aspect includes a memory in which at least one program is stored and at least one processor configured to execute the at least one program, wherein the at least one processor obtains information about a candidate object using a distance detection sensor, obtains an image of the candidate object using an image capturing sensor, determines whether the candidate object is a real object using the image of the candidate object, and displays a marker containing information about the candidate object determined to be a real object on a monitoring image.