TRUE COURSE
True course is the angel at the ships between true North and the ships head,that is the angel between the true meridian and the ship's fore and aft line.
TRUE BEARING
True bearing of an object is the angle at the observer between true North indicated by the meridian and the line joining the observer and the object.
DEVATION
Magnetic course is the angel at the ships between magnetic North and the ships head,that is the angel between the magnetic meridian and the ship's fore and aft line.
TRUE BEARING
True bearing of an object is the angle at the observer between true North indicated by the meridian and the line joining the observer and the object.
DEVATION
MAGNETIC COURSE
MAGNETIC BEARING
The Magnetic bearing of an object is the angle at the observer between magnetic North indicated by the magnetic meridian and the line joining the observer and the object.
DEVITAION
The angel which the compass needle makes with the magnetic meridian is known as the deviation.
It is termed East,If the compass North lies to the East or left of the magnetic North
The deviation of a compass varies as the ships head changes.For the same ships head,deviation remains the same for all bearing as deviation,depends on the ships head and not on a bearing
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