During the track-keeping control, the relativity between the current ship position and the set track must be confirmed.
在进行航迹控制时，必须确定当前船位与设定航迹的相对关系。
As an automatic decision-making assistance system, it can decide ship position relative to the continent, mark target position, assist navigation, and avoid the danger.
作为一个自动决策辅助系统，能连续确定船舶相对于大陆的位置、标定目标的位置，辅助导航和避险。
GPS is the most important navigation and position equipment for its ability to provide the continuous and precise ship position.
而在船舶导航设备中，GPS以其能提供连续、高精度的船位，已经成为船上最重要的一种导航和定位的方法。
GPS is the most important navigation and position equipment for its ability to provide the continuous and precise ship position.
而在船舶导航设备中，GPS以其能提供连续、高精度的船位，已经成为船上最重要的一种导航和定位的方法。
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