Position line
A position line or line of position (LOP) is a line (or, on the surface of the Earth, a curve) that can be both identified on a chart (nautical chart or aeronautical chart) and translated to the surface of the Earth. The intersection of a minimum of two position lines is a fix that is used in position fixing to identify a navigator's location.
There are several types of position line:
- Compass bearing, the angle between a compass point and the line passing through the compass and the point of interest
- Transit, a line passing through the observer and two other reference points
- Leading line, the line passing through two marks indicating a safe channel
- Leading lights, the line passing through two beacons indicating a safe channel
- Sector lights, the lines created by masked colored lights that indicate a safe channel
Sources and credits
This article is adapted from the Wikipedia article “Position line”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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