There are three headings... True, Magnetic and Compass
. The Compass heading is what is read on the compass card, but does not take deviation and variation into account. Adding the deviation to the compass heading will give you a magnetic heading. Adding the variation to the magnetic heading will give you the true heading.
There is no "actual" heading, since it depends on what you're looking at, unless by "actual" you mean "true".
Newbie question to your newbie question, montenido:
are you familiar with the difference between actual and magnetic headings?
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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