- Course Overview
- Topics Covered
- Course Materials
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: One Day - Seven Hours, 9 am - 4 pm with a 30 minute lunch break.
- 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
Certification:Air 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
Upon course completion you will receive a Landfall Navigation Marine Training Center certificate of completion in Intermediate Celestial Navigation
Note: Printed Reduction Forms and other handouts will be provided in class.