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Finding Gyro Error from Amplitude of the Sun

In this video, I walk you through how to find gyro error using the amplitude of the sun—a classic celestial navigation technique that still works when electronics fail or you just want to verify your instruments. You’ll see the full, real-world process using: A telescopic alidade to observe the Sun at sunrise/sunset The Nautical Almanac to get the Sun’s declination Bowditch (Pub. 9) to compute true amplitude and compare it with gyro bearing I break the steps down clearly: How to take the bearing of the Sun How to find the Sun’s true amplitude from tables How to compare true bearing vs gyro bearing How to determine the direction and amount of gyro error This method is especially useful for: Deck cadets and maritime students Navy Quartermasters Navigators prepping for exams Mariners who want a solid backup to electronic navigation Anyone curious about traditional navigation techniques If you found this helpful, drop a like, and let me know if you want a follow-up video on gyro error using azimuths, stars, or planets.