The direction of an object from your ship is called the
bearing. Bearings are measured in degrees clockwise around a
circle from 000° to 360°.
The ships bow is the reference point for relative bearings.
For example, a sailboat dead ahead would bear 000°, a lighthouse
off the stern would bear 180°, a ship directly off the port beam
would bear 270°, and so on.
True or geographic north is the reference point for true
bearings; they are read directly from the gyro compass or a gyro
The magnetic North Pole is the reference point for magnetic
bearings; they can be read from the ships magnetic compass.