一台电子设备，或使用GPS传感器及导航软件的电脑；它在海图上显示出本船所在的位置。海图标绘仪能执行许多种导航任务。

An electronic device, or a computer using a GPS sensor and navigational software, that displays the boat's position on a chart view. Chartplotters can perform many navigational tasks.

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ARPA(自动雷达标绘仪)是当今船舶导航避碰主要的辅助设备，如果使用得当，无疑对船舶航行安全将起到积极的作用。

ARPA (Automatic Radar Plotting Aids) is a ship's main assistant equipments for navigation and collision. If it is to be used correctly, no doubt it will make active effect to ship's navigation.

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