I'm confused with the terminology.
My new chartplotter manual says it needs a Heading Sensor in order to overlay the Radar on the chart.
I'm thinking of using the Airmar 220WX for wind at the top of the mast, especially since it incorporates a GPS and a "three axis solid state compass with dynamic stabilization".
Is "Heading Sensor" just another term for "solid state compass"?
One other thing: Is a compass at the top of the mast subject to error or wide swings due to mast movement in a sea? What about the GPS...same question?