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Intermediate Celestial Navigation

Intermediate Celestial Navigation

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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.

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


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.

Topics Covered:

  • 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
  • Specifications

    Upon course completion you will receive a Landfall Navigation Marine Training Center certificate of completion in Intermediate Celestial Navigation

    Course Materials:
  • 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.

    Payments & Policies

    Marine Training Center Cancellation and Refund Policy:

    Any student cancellation received by 5 days in advance of the start date of the course will receive a full refund. Any books or course materials purchased for a course can be returned for a store credit only.

    Cancellations received less than 5 days in advance will not receive any refund.

    Schedule change requests received less than 5 days in advance of the start of the course are subject to a 25% surcharge .

    Students who arrive the day of the course who have not properly registered or have not properly prepared as required under the course requirements will be asked to leave and will not receive any refund.

    Thank you.
    Wim Jessup
    Executive Director
    Landfall Marine Training Center

    Private classes for yacht clubs and organizations can be arranged. Please call 1-800-941-2219 Ex: 21 or email the director to discuss your request:

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