ASA 107: Celestial Navigation
Advanced Sailing Class
Advanced Sailing Lessons
Take your sailing expertise to the next level with ASA 107: Celestial Navigation, the essential precursor to ASA 108: Offshore Passagemaking. This comprehensive course teaches you to determine your position at sea using traditional sextant navigation techniques—no GPS required. You’ll gain the confidence and skills to safely navigate offshore using celestial bodies like the sun, moon, stars, and planets.
This self-paced online course is ideal for serious mariners preparing for long-distance cruising or offshore passages. No prior celestial experience required—just curiosity and commitment.
$419
Class is 40-60 hours of online study presented by STARPATH.
Self-paced with 1-year access to complete (extensions available)
Calculating latitude and longitude from sun, star, and planet sights
Plotting celestial fixes and running fixes
Timekeeping, declination, and Greenwich Hour Angle (GHA) principles
Sailing Skills You’ll Learn
Using a sextant to measure celestial angles
Developing a celestial navigation plan for offshore sailing
Understanding the Nautical Almanac and sight reduction tables
40–60 hours of in-depth online training (via STARPATH)
ASA 107 certification and logbook seal
Full set of text-based course materials
Student discussion forum with multi-time zone instructor support
What’s Included
Prerequisites
You must have successfully completed ASA 105: Coastal Navigation.
If you did not complete ASA 105 through PSSI, contact our office and provide your ASA member number to verify prerequisites.
Club Members, please contact the office to register for classes to obtain your club level discount.