A non-transitory computer-readable recording medium stores therein a program that causes a computer to execute a process. The process includes calculating, for each of a plurality of grids through which a track of a specific vessel passes, an angle of approach and an angle of exit of the track, respectively; extracting a grid for which the angle of approach and the angle of exit conform to a determining condition set for each of the grids based on the determining condition; and determining whether the specific vessel has taken an avoidance behavior based on a relative distance from another vessel corresponding to a position of the specific vessel in a track in the extracted grid.

A non-transitory computer-readable recording medium stores therein a generation program that causes a computer to execute a process. The process includes acquiring positional information including positions of a plurality of ships at a plurality of timings; acquiring, or generating from the positional information of the plurality of ships, sailing route information; and generating closest distance information for each sea area corresponding to positions of closest approach of two ships, from the positional information and the sailing route information, the closest distance information including a statistical quantity of a distance of closest approach between the two ships, the statistical quantity of a distance of closest approach being calculated based on encountering relationship for directions of the two ships and whether or not ship tracks of the two ships are along a sailing route in the sea area.

A non-transitory computer-readable recording medium stores therein a generation program that causes a computer to execute a process. The process includes acquiring positional information including positions of a plurality of ships at a plurality of timings; acquiring, or generating from the positional information of the plurality of ships, sailing route information; and generating closest distance information for each sea area corresponding to positions of closest approach of two ships, from the positional information and the sailing route information, the closest distance information including a statistical quantity of a distance of closest approach between the two ships, the statistical quantity of a distance of closest approach being calculated based on encountering relationship for directions of the two ships and whether or not ship tracks of the two ships are along a sailing route in the sea area.

A non-transitory computer-readable recording medium stores a program that causes a computer to execute a process. the process includes extracting a sailing log of a ship in a sea area with a sailing route existing therein, the sea area being such that a distance between two ships of the ship and another ship is less than a predetermined value and at least one of the two ships has a ship track deviating from the sailing route; and evaluating risks at a plurality of points that are included in the sea area, based on the extracted sailing log.

A non-transitory computer-readable recording medium stores a program that causes a computer to execute a process. the process includes extracting a sailing log of a ship in a sea area with a sailing route existing therein, the sea area being such that a distance between two ships of the ship and another ship is less than a predetermined value and at least one of the two ships has a ship track deviating from the sailing route; and evaluating risks at a plurality of points that are included in the sea area, based on the extracted sailing log.

An exemplary sensor device provides marine vessel data of a marine vessel without integration to the marine vessel's information systems. The sensor device includes a receiver configured to receive at least position and time information relating to the marine vessel. At least one sensor is configured to measure marine vessel performance data. The at least one sensor can measure the marine vessel performance data when the sensor device is affixed to the hull structure of the marine vessel. At least one processor is configured to perform frequency analysis of the measured marine vessel performance data and to generate marine vessel data based on the received at least position and time information and the frequency analyzed marine vessel performance data.

A positional sensor detects a current position and a current bearing of a boat body and outputs position information indicating the current position and the current bearing. A controller receives the position information. The controller determines a first target position of the boat body and a target bearing in the first target position. The controller calculates a bearing difference between the current bearing and the target bearing. The controller determines an offset amount of the first target position in response to the bearing difference or an outside disturbance. The controller determines a position spaced away by the offset amount from the first target position on a side toward the current position as a second target position. The controller generates an instruction signal to control a propulsion device so as to cause the boat body to arrive at the second target position.

A positional sensor detects a current position and a current bearing of a boat body and outputs position information indicating the current position and the current bearing. A controller receives the position information. The controller determines a first target position of the boat body and a target bearing in the first target position. The controller calculates a bearing difference between the current bearing and the target bearing. The controller determines an offset amount of the first target position in response to the bearing difference or an outside disturbance. The controller determines a position spaced away by the offset amount from the first target position on a side toward the current position as a second target position. The controller generates an instruction signal to control a propulsion device so as to cause the boat body to arrive at the second target position.

An imaging system for a ship includes cameras mounted on the ship and spaced apart at a predetermined interval, and a controller that combines peripheral images of the ship captured by the respective cameras to create a simulated bird's eye image. Adjacent ones of the cameras are located at positions and angles so that the peripheral images include a common portion of the ship. The controller performs a calibration process to adjust areas of the peripheral images to be used for the bird's eye image based on a calibration index located at a portion of the ship and included in the common peripheral images.

Embodiments of the invention relate to marine retrofitted illuminated dash panel cover having a light controller and one or more light sources that is installed and retrofitted onto an existing boat dash panel, where the light source and light cover panel are aftermarket retrofitted components to the existing boat dash panel.