Pilotage with Global Positioning System (GPS) 全球定位系统(GPS)导航
A GPS receiver obtains a position fix from signals transmitted by orbiting satellites and is displayed on the GPS as latitude and longitude.
GPS接收器通过接收来⾃轨道卫星发射的信号获得定位,并以经纬度的形式显示在 GPS上。
The simplest way to navigate with a GPS is to plot your latitude and longitude on a chart. A GPS set will give you much more information than this, though. For example, it will tell you your course and Speed over the Ground (SOG), and your position relative to a waypoint. As mentioned earlier, a GPS is a very accurate way of measuring boat speed.