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Nautical chart display device, nautical chart display method, and nautical chart display program
Nautical chart display device, nautical chart display method, and nautical chart display program
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机译：航海图表显示设备，航海图表显示方法和航海图表显示程序
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摘要
The purpose is to provide a nautical chart display device which enables to easily grasp a direction centering on a reference position. The nautical chart display device 20 includes a display unit 21, a detector 22, a directional symbol displaying module 52, and a directional symbol changing module 53. The display unit 21 displays a nautical chart on a screen. The detector 22 detects an operation to the screen. The directional symbol displaying module 52 displays, on the display unit 21 so as to be superimposed on the nautical chart, a directional symbol in which directional markers arranged in a circle and the center of the circle are indicated. The directional symbol changing module 53 moves the directional symbol according to an operation to the directional symbol.
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