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Calculate Compasses error.

Let CoNav Make It Simple!
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CoNav onboard.

CoNav app for mariners that allows you to quickly calculate Gyro compass error, Magnetic compass error and deviation.

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TGHA
TLHA 
Deviation 
A
B
C
Zn
True Bearing 
True Course
Gyro Compass error
Magnetic Compass error
Magnetic Compass Deviation
key features
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