- Course Overview
- Topics Covered
- Course Materials
Introduction to Celestial Navigation will explain the history, theory and practice of navigating by celestial bodies.
Intermediate Celestial Navigation is the practical application of navigational principals to find a position at sea. The course will do real sight-reductions and fixes using sights taken on recent passages by the instructor.
Course Format: Day One - Seven Hours, 30 minute lunch break
Day Two - Seven Hours, 30 minute lunch bre
- History of development from classical times to the Vikings and to the first tables of declination
- Basic astronomy
- Basic terms of art such as GHA, LHA, meridian altitude, azimuth, mean time and LAN
- Explanation of the Nautical Almanac and fixing geographic position of bodies
- The sextant
- Time and longitude
- The navigational triangle
- Latitude sailing using the noon sight
- Correcting a sight to find altitude of a body
- Understanding and using the Nautical Almanac to fix celestial bodies (sun, moon, planets, stars)
- Calculating Local Hour Angle
- Using LHA and declination to enter the reduction tables for calculated altitude and azimuth of the body
- Plotting the intercept and line of position of the vessel
- Real examples of integrating ship’s-log dead-reckoning with sights to produce running fixes
- Doing a noon fix
- Three star fix with selected stars, H.O. 249 Volume 1
- Using the moon
- Planning the navigator’s daily routine on a passage; ideal azimuths for the vessel’s course
Upon course completion you will receive a Landfall Navigation Marine Training Center certificate of completion in Basic Celestial Navigation and Intermediate Celestial NavigationAir Navigation Tables Publication 249, Volume 3 , Latitudes 39-89
2018 Nautical Almanac, Government or Commercial Version
Plotting tools: pad of plotting sheets, parallel rule, compass, pencil, eraser
Bring a sextant if you have one, Instructor will have two sextants available.
All items are available from the Landfall website
Note: Printed Reduction Forms and other handouts will be provided in class.