Home > Marine Training Center > Intermediate Celestial Navigation

Click to enlarge

Intermediate Celestial Navigation

The second of two consecutive courses offered which will put the new student of celestial navigation on the path to proficiency in this time honored, defining skill of the competent sailor. No sailor going offshore should be without this knowledge. Even the U.S Navy has re-introduced celestial navigation as a core-competency at the Naval Academy in recognition of the need for redundant capabilities in the event of technical failure, accident, or war.

Refund Policy

Receive a 10% discount toward your next Landfall purchase, upon course completion. Restrictions apply.

Select a Session: 

  • Course Overview
  • Topics Covered
  • Certification
  • 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.
  1. Correcting a sight to find altitude of a body
  2. Understanding and using the Nautical Almanac to fix celestial bodies (sun, moon, planets, stars)
  3. Calculating Local Hour Angle
  4. Using LHA and declination to enter the reduction tables for calculated altitude and azimuth of the body
  5. Plotting the intercept and line of position of the vessel
  6. Real examples of integrating ship’s-log dead-reckoning with sights to produce running fixes
  7. Doing a noon fix
  8. Three star fix with selected stars, H.O. 249 Volume 1
  9. Using the moon
  10. 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 Intermediate Celestial Navigation

  • 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

  • Note: Printed Reduction Forms and other handouts will be provided in class.