True Course, True Bearing, Relative Bearing.
True Course is the direction of travel of the vessel. Also, is the dihedral angle formed between the True Meridian Plane and the Longitudinal Centre Plane of the vessel.
True Bearing is direction to object. Also, is the dihedral angle formed between the True Meridian Plane and the Vertical Plane passing through an object.
Relative Bearing is the dihedral angle formed between the Longitudinal Centre Plane of the vessel and the Vertical Plane passing through an object. It can be Green Relative Bearing (GRB) or Red Relative Bearing (RRB).
The relationships and conversion of them can be found in the file below.
True Course, True Bearing, Relative Bearing _ v1.0
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