Re: M_Boats: what compass correction?

[Richard Lane]

The magnet on a Southern Hemisphere compass is inclined down from 
horizontal at it's south pole as opposed to down at the north pole in a 
Northern Hemisphere compass. The reason is that the earth's magnetic 
field emanates from below the surface at the poles and therefore has a 
vertical component nearer either pole.
Dick

MC Carpenter wrote:

what adjustment do you have to do to a compass that goes further south than
the equator. Different that using a compass in the northern half of the
world only?
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