Compasses

A ship's _____________ is determined by the direction from the ship to the geographic north pole.

• True Course

• True North

• Magnetic North

• Relative Course

___________ 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

• True Bearing

• Magnetic Bearing

• Bearing

_________________ is the dihedral angle formed between the Longitudinal Centre Plane of the vessel and the Vertical Plane passing through an object.

• Bearing

• Magnetic Bearing

• Relative Bearing

• True Bearing

_______________ is the difference between true north and magnetic north and is measured in degrees and minutes (either east or west). It is shown on your chart in the compass rose.

• Deviation

• Variation

• Compass Error

• True north

___________ is the error in reading a bearing from the compass caused by the magnetic influence of some nearby object, such as a metal post or an engine

• Variation

• Compass error

• Compass correction

• Deviation

Compass Best error ________?

Compass Least error ________?

C D M V T = you ________ East

C D M V T = you _____________ West

T V M D C = You __________ East