CELESTIAL-L5.2

Compass error by azimuth and amplitude

CELESTIAL-M5 · Stars, compass error, great circles and the electronic bridge · CELESTIAL-M5-A Twilight star and planet sights, compass error by azimuth and amplitude, great circle sailing, and where astro fits alongside GNSS and ECDIS.

Compare the body's **true bearing** with its **compass bearing**: the difference is compass error. Worked by azimuth (morning sun) and by amplitude (sunset), both giving **8.6° W** on the same heading.

Independent study. xplor is not an accredited training provider and awards no certificate or Certificate of Competency. The MCA 'Celestial Navigation' examination must be sat at an MCA-approved examination centre, and the Yachtmaster Ocean certificate is awarded only by the RYA after its own oral and written examination. AI-drafted content pending subject-matter-expert review.