# Magnetic compass navigation.

Calculates true, magnetic and compass course by one of the given parameters taking into account the magnetic declination and compass deviation.

### Articles that describe this calculator

Magnetic declination changes over time, here you should specify the year for which the magnetic declination was determined

Value of the yearly magnetic declination change

Date of calculation

Digits after the decimal point: 2

Values of magnetic compass deviation with equal intervals for every course from 0 to 360 degrees.

Compass direction

Magnetic direction

True direction

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