Abstract: A navigation information device is provided with a position acquisition unit for acquiring a position information of its own ship, a memory for storing display settings corresponding to a waypoint that is a via point on a planned route, and a display processing unit for performing generation processing for generating a screen in which the position information is superimposed on a chart, and performing change processing for changing display settings to display settings corresponding to the waypoint based on a positional relationship between the position information and the waypoint.

Abstract: 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.

Abstract: A route planning apparatus is provided. The apparatus may include a display, a user interface, a caution information reader, and a route verifier. The display displays a user-scheduled route on a map. The user interface accepts an input of time and date to travel on the route. The caution information reader reads caution information having influence on the travel and associated with position, and time and date. The route verifier verifies whether the travel on the route is available based on one or more positions, and times and dates at which the caution information read by the caution information reader indicates, one or more positions on the route, and the inputted travel time and date.

Abstract: 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.

Abstract: 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.

Abstract: A route planning apparatus is provided. The apparatus may include a display, a user interface, a caution information reader, and a route verifier. The display displays a user-scheduled route on a map. The user interface accepts an input of time and date to travel on the route. The caution information reader reads caution information having influence on the travel and associated with position, and time and date. The route verifier verifies whether the travel on the route is available based on one or more positions, and times and dates at which the caution information read by the caution information reader indicates, one or more positions on the route, and the inputted travel time and date.

Abstract: 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.