A technique capable of determining a suitable or optimum exclusive region (bumper) setting value and improving the accuracy and others of ship collision avoidance support and automatic ship maneuvering as a result is provided. A ship maneuvering calculation device 1 calculates setting information of an automatic ship collision avoidance program 3 for achieving a function of an automatic ship collision avoidance device 2 of a vessel. The ship maneuvering calculation device 1 generates a plurality of exclusive region values 103 that are different in at least a shape and a size as parameter values for an exclusive region set around a vessel, repeatedly executes simulation calculation using the automatic ship collision avoidance program (a copy 13) while changing a condition 102 and the parameter values, calculates an evaluation value 105 corresponding to the parameter value, based on the result of the simulation calculation, determines an optimum value 106 of the exclusive region, based on the evaluation value, and sets the optimum value 106 of the exclusive region to the automatic ship collision avoidance program 3.

In order to provide a ship maneuvering support system capable of coping with drowsiness of an operator, a ship maneuvering support system includes: a portable terminal carried by a ship's operator for detecting the operator's drowsiness, and a navigation device used for navigating the ship and performing a predetermined operation when the operator's drowsiness is detected.

The present disclosure provides a ship monitoring system which makes it easy for a user to grasp a change in a risk situation. The ship monitoring system includes a first data generator, a second data generator, processing circuitry, and an alarm sounding part. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data. The processing circuitry generates a discontinuous sound pattern with an interval according to the risk value. The alarm sounding part sounds an alarm according to the discontinuous sound pattern.

A ship monitoring system has a first data generator that generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry specifies a risk range where a ship area occupied by the first ship or a watch area set around the first ship overlaps with a ship area occupied by the second ship or a watch area set around the second ship, among an estimated course of the second ship, based on a position of the first ship and a position of the second ship at each timing, that are estimated from the first ship data and the second ship data, when assuming that the first ship changes a course to an arbitrary direction and crosses the estimated course of the second ship.

In order to provide a ship maneuvering support system capable of coping with drowsiness of an operator, a ship maneuvering support system includes: a portable terminal carried by a ship's operator for detecting the operator's drowsiness, and a navigation device used for navigating the ship and performing a predetermined operation when the operator's drowsiness is detected.

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.

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.

The present disclosure provides a ship monitoring system which makes it easy for a user to grasp a change in a risk situation. The ship monitoring system includes a first data generator, a second data generator, processing circuitry, and an alarm sounding part. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data. The processing circuitry generates a discontinuous sound pattern with an interval according to the risk value. The alarm sounding part sounds an alarm according to the discontinuous sound pattern.

A ship monitoring system has a first data generator that generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry specifies a risk range where a ship area occupied by the first ship or a watch area set around the first ship overlaps with a ship area occupied by the second ship or a watch area set around the second ship, among an estimated course of the second ship, based on a position of the first ship and a position of the second ship at each timing, that are estimated from the first ship data and the second ship data, when assuming that the first ship changes a course to an arbitrary direction and crosses the estimated course of the second ship.

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.