Introduction to Celestial Navigation
In modem day navigation, we have grown dependent on advanced satellite
navigation systems (GPS) to accommodate our day-to-day navigation
needs. However, celestial navigation is still very much a part of a days
work in navigation. You may ask yourself why we still use celestial
navigation with all the high tech equipment available to find the ships
position. The answer is simple. In wartime, there is always a possibility
that satellite tracking stations and satellites themselves may be knocked
out. As a Quartermaster, you must make every attempt to hone your
In this chapter, you will learn the basics of celestial navigation. The
information contained in this chapter will help you to understand the more
complex topics contained in chapter 9.
The material in this chapter will enable the student to:
Describe the celestial sphere.
Describe the Celestial Coordinate System.
Use The Nautical Almanac.
Determine the LMT of sunrise, sunset, and twilight.
Determine LMT of moonrise and moonset.
Determine LHA of Aries, selected stars, and star time using The
Nautical Almanac, Pub 249, and The Rude Starfinder.
Earth and the Celestial Sphere
Understanding the Celestial Coordinate System
Using The Nautical Almanac
How to Determine the Time of Sunrise, Sunset, and
How to Determine the Time of Moonrise and Moonset
How to Determine Selected Stars Using Pub 249
How to Determine Selected Stars Using The Rude Starfinder