A remote display device includes processing circuitry. The processing circuitry display a display screen. The processing circuitry generate a plurality of display data corresponding to mutually different display areas, each being a part of the display screen. The processing circuitry transmit the plurality of display data generated to a plurality of terminal devices, respectively. The processing circuitry update the display screen based on operation data indicative of an operation performed by the terminal device to the display area corresponding to the display data.

A remote display device includes processing circuitry. The processing circuitry display a display screen. The processing circuitry generate a plurality of display data corresponding to mutually different display areas, each being a part of the display screen. The processing circuitry transmit the plurality of display data generated to a plurality of terminal devices, respectively. The processing circuitry update the display screen based on operation data indicative of an operation performed by the terminal device to the display area corresponding to the display data.

The purpose is to provide an image generating device which generates a synthesized image from which one is able to intuitively grasp a relation between an image and a traveling position of a water-surface movable body. The image generating device includes processing circuitry. The processing circuitry acquires attitude information indicative of an attitude of a camera or a ship where the camera is installed. The processing circuitry acquires a traveling route of the ship based on a detection result of at least one of a position and a direction of the ship. The processing circuitry generates traveling route display data based on the attitude information and the traveling route. The processing circuitry generates a synthesized image in which the traveling route display data is synthesized with an image outputted from the camera.

The purpose is to provide a nautical chart display device which enables a measurement of a distance on an electronic nautical chart, like a measuring method which is performed by using a divider. The nautical chart display device includes a display unit, an operation detector, a registration processing module, and a change processing module. The display unit has a screen and displays a nautical chart on the screen. The operation detector detects a touch operation to the screen. The registration processing module accepts two points of the touch operation on the screen, and registers a scale at which a distance between the touched points on the screen matches a distance setting on the nautical chart as an additional scale. The change processing module changes the scale of the nautical chart to the additional scale.

The purpose is to provide a nautical chart display device which enables a measurement of a distance on an electronic nautical chart, like a measuring method which is performed by using a divider. The nautical chart display device includes a display unit, an operation detector, a registration processing module, and a change processing module. The display unit has a screen and displays a nautical chart on the screen. The operation detector detects a touch operation to the screen. The registration processing module accepts two points of the touch operation on the screen, and registers a scale at which a distance between the touched points on the screen matches a distance setting on the nautical chart as an additional scale. The change processing module changes the scale of the nautical chart to the additional scale.

A nautical chart processing device is provided. The nautical chart processing device includes processing circuitry. The processing circuitry is configured to receive position information indicating position of a pair of base points on an electronic chart, set a movable measurement point on a straight line connecting the pair of base points in real time, calculate, on the electronic chart, a distance between the movable measurement point and at least one base point of the pair of base points, and output position information of the movable measurement point and the calculated distance.

A nautical chart processing device is provided. The nautical chart processing device includes processing circuitry. The processing circuitry is configured to receive position information indicating position of a pair of base points on an electronic chart, set a movable measurement point on a straight line connecting the pair of base points in real time, calculate, on the electronic chart, a distance between the movable measurement point and at least one base point of the pair of base points, and output position information of the movable measurement point and the calculated distance.

A sensor detects a shape of a shore arrival location and a positional relationship of the shore arrival location and a boat body and outputs environment information indicating the shape of the shore arrival location and the positional relationship. A controller receives the environment information and generates an instruction signal to control a propulsion device to cause the boat body to move toward the shore arrival position set based on the environment information and to push the boat body to the shore arrival location.

A sensor detects a shape of a shore arrival location and a positional relationship of the shore arrival location and a boat body and outputs environment information indicating the shape of the shore arrival location and the positional relationship. A controller receives the environment information and generates an instruction signal to control a propulsion device to cause the boat body to move toward the shore arrival position set based on the environment information and to push the boat body to the shore arrival location.

A boat includes a boat body, a propulsion device, an operator that operates the propulsion device, and a controller. The propulsion device is disposed in the boat body and generates a propulsion force to move the boat body. The controller executes an automatic shore arrival control to control the propulsion device so as to cause the boat body to move toward a target position. The controller ends the automatic shore arrival control when the operator is positioned in a non-neutral position that differs from a neutral position.