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CDMVT Compass Error Calculation Guide
forum.gcaptain.com/t/cdmvt-and-compass-error/1264Yapay zekadan makale özeti
- Compass Components
- Compass (C) is the standard compass used on the boat
- Magnetic (M) shows compass's true direction without deviation
- Variation (V) is the difference between True and magnetic north poles
- True (T) represents the physical north pole
- Calculation Process
- Add east variation and deviation from compass to true
- Subtract west from the result
- Gyro error (GE) is used to obtain true heading
- Gyro is not error-free, typically showing 1-3 degree errors
- Practical Application
- PSC compass outside pilot house recommended for reduced deviation
- Deviation varies by ship and can be checked using CDMVT
- Gyro error should be considered when correcting to true heading
- Compass reading can be used directly but not for charting