Gyro Error & Compass Deviation Using a Star | ABC Method (Step-by-Step Guide)

Learn how to determine gyro error and compass deviation using a star through the ABC Method in this step-by-step guide. In this tutorial, we use the star Antares to demonstrate how to calculate GHA, LHA, and true bearing using the Nautical Almanac and Norie’s Tables. You’ll also learn how to convert azimuth, determine gyro error, and find compass deviation with clear explanations and practical methods. #astronomy #gyroerror #celestialnavigation #navigation #maritime #seafarer #seaman #bsmt