Position line - Citizendia

A position line is a line that can be identified both on a nautical chart or aeronautical chart and by observation out on the surface of the earth. A nautical chart is a graphic representation of a maritime area and adjacent Coastal regions An aeronautical chart is a Map designed to assist in Navigation of Aircraft, much as Nautical charts do for watercraft or a roadmap EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 The intersection of two position lines is a fix that used in position fixing to identify the navigator's location. A position fix or simply a fix is a term used in Position fixing in Navigation to describe a position derived from measuring external reference points Position fixing is the branch of Navigation concerned with the use of a variety of visual and electronic methods to determine the position of a Ship,

There are several types of position line:

Compass bearing - the angle between north 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 coloured lights that indicate a safe channel

A compass, magnetic compass or mariner's compass is a navigational instrument for determining direction relative to the earth's Magnetic poles It consists In Navigation, a bearing is the direction one object is from another object In Geometry and Trigonometry, an angle (in full plane angle) is the figure formed by two rays sharing a common Endpoint, called This is about the direction for other uses see North (disambiguation. In Navigation and Position fixing, a transit occurs when a navigator observes two fixed reference points that are in line with the navigator A leading line is a line formed by a pair of marks which are generally man-made that are used in Position fixing and Navigation, to indicate a safe passage through Leading lights (also known as range lights in the USA) are a pair of light beacons used in Position fixing and Navigation to indicate a safe Sector lights are a man-made Pilotage and Position fixing aid that indicates a safe channel through shallow or dangerous waters Navigation is the process of reading and controlling the movement of a craft or vehicle from one place to another

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