ECDIS User manual
54
2.14.2 How to use
The following describes the use of two azimuth positioning lines to determine the position
of the vessel .
1.The multi-function window selection displays the LOP positioning window as shown:
2.Left mouse click on the chart to select the position of the observation point or manually
input the latitude and longitude at the latitude and longitude of the window;
3.The type of azimuth is selected in the Type box, the input azimuth (the azimuth of the
vessel to the observation point) and the range (maximum 120 nm), the initial azimuth
value is 0 degrees, and the range is 2 nm. The range is the length of the azimuth line. If
the type is selected as the range, it means the radius of the range bearing line, as shown:
4.Enter the time;
5.click
,set the first azimuth positioning line. At this time, the bearing line
becomes a solid line, the observation point becomes a real point, and the setting time
(hours) is displayed in the middle of the line segment, as shown in the figure:
6.Repeat steps 2, 3, 4, and 5 to set the second positioning line (up to 6). If the input time is
later than all previous positioning lines, the current direction and speed will be used. The
time-observed positioning line is converted to the position of the last positioning line, and
the positioning line observed in the same situation is as shown:
