Rational Horizons and Positioning in Celestial Navigation

This free online course explains rational horizons and the steps for calculating position lines in celestial navigation.

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Learning Outcomes

In this free course, you will learn how to:

Explain the features of the sextant altitude and rational horizon
Discuss the theoretically visible sunrise and sunset
Examine the relationship between time and longitude
Identify the purpose of zone, standard-times and their applications
List the methods of position fixing of a ship when the ship is out of sight of land
Identify various positions on the surface of the Earth
Explain the process of simultaneous and staggered observations
Discuss various position lines by means of observing the sun
Analyse the process of time of meridian passage
Identify various means of longitude correction for time of meridian passage

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