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.

An electronic map display device is provided. The device acquires electronic maps and displays the electronic maps, each electronic map being acquired per acquisition unit. The electronic map display device may include a map information display determiner for determining whether the electronic map is currently available per acquisition unit, and a map information display interface for displaying information relating to the electronic map per the acquisition unit depending on whether the electronic map is currently available. The map information display interface varies the exterior edge of each of the electronic maps depending on the status of the electronic map.

An electronic map display device is provided. The device acquires electronic maps and displays the electronic maps, each electronic map being acquired per acquisition unit. The electronic map display device may include a map information display determiner for determining whether the electronic map is currently available per acquisition unit, and a map information display interface for displaying information relating to the electronic map per the acquisition unit depending on whether the electronic map is currently available. The map information display interface varies the exterior edge of each of the electronic maps depending on the status of the electronic map.

Provided are technologically improved systems and methods for providing terrain and runway feedback for an aircraft over a secured datalink. The method utilizes a controller onboard the aircraft and one on the ground. The controller onboard the aircraft performs the operations of: formatting a data package of mobile platform data; confirming the aircraft has a valid subscription service; securing the data package using a security protocol; and transmitting the data package via a secured datalink. The ground controller performs the operations of: confirming the subscription service of the aircraft; validating the security protocol used on the data package; decoding and processing the data with map extraction, threat detection, and image generation to generate raw terrain and runway feedback data; and transmitting the raw data using the secured datalink. An alert controller is used to generate alert commands for various alert devices based on the raw terrain and runway feedback data.

This invention relates to a positioning system and a method for navigation, in particular but not exclusively to a positioning system and a method for maritime navigation. A positioning system and method for navigation comprising a reference unit positioned on a vehicle, and a portable optical device, in communication with the reference unit, comprising sensing means to measure bearings to observed target points relative to the vehicle heading to thereby determine a position of the vehicle.

To stably estimate a service condition of a ship of interest at each time from a time-series position information of the ship, the service condition estimation device 20 includes service condition estimation means 21 which estimates a service condition of the ship using one or more parameters generated by learning of the ship movement learning device 10. The ship movement learning device 10 includes track pattern generation means which generates a track pattern on the basis of time-series position information and speed information of a ship, and pattern learning means which learns a ship movement on the basis of a relationship between the track pattern and the service condition of the ship.

To stably estimate a service condition of a ship of interest at each time from a time-series position information of the ship, the service condition estimation device 20 includes service condition estimation means 21 which estimates a service condition of the ship using one or more parameters generated by learning of the ship movement learning device 10. The ship movement learning device 10 includes track pattern generation means which generates a track pattern on the basis of time-series position information and speed information of a ship, and pattern learning means which learns a ship movement on the basis of a relationship between the track pattern and the service condition of the ship.

A first sensor detects first environment information indicating a shape of a shore arrival location and a positional relationship between the shore arrival location and a boat body. A second sensor, different from the first sensor, detects second environment information indicating the shape of the shore arrival location and the positional relationship between the shore arrival location and the boat body. A controller is communicatively connected to the first sensor and the second sensor. When the distance from the boat body to the shore arrival location is greater than a predetermined distance threshold, the controller generates, based on the first environment information, an instruction signal to control a propulsion device to as to cause the boat body to arrive at the shore arrival location. When the distance from the boat body to the shore arrival location is equal to or less than the distance threshold, the controller generates an instruction signal based on the second environment information.

A first sensor detects first environment information indicating a shape of a shore arrival location and a positional relationship between the shore arrival location and a boat body. A second sensor, different from the first sensor, detects second environment information indicating the shape of the shore arrival location and the positional relationship between the shore arrival location and the boat body. A controller is communicatively connected to the first sensor and the second sensor. When the distance from the boat body to the shore arrival location is greater than a predetermined distance threshold, the controller generates, based on the first environment information, an instruction signal to control a propulsion device to as to cause the boat body to arrive at the shore arrival location. When the distance from the boat body to the shore arrival location is equal to or less than the distance threshold, the controller generates an instruction signal based on the second environment information.

A navigation system includes a sensing device and an environment map creator. The sensing device generates environment information which indicates a shape of a shore arrival location. The environment map creator creates an environment map which indicates the shape of the shore arrival location based on the environment information.