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Bearings

Bearings

A bearing is the amount of turn clockwise from the North direction. The amount of turn is given as an angle and in degrees.

North is shown with a vertical line. At the top of the line is either a diamond shape or the letter N.

A bearing is always given as a three-digit number. For numbers less than 100, use zeroes (0) at the front of the number to make three digits.

A bearing is described as to a point from a point. For example: the bearing to a ship from a lighthouse. The angle is measured at the lighthouse (the from), and is the angle between North and the ship:

A reciprocal bearing is a bearing taken from the other point. A reciprocal bearing is 180º different to the original bearing.

Example 1

What is the bearing of the ship from the lighthouse?

Bearing of a ship from a lighthouse

This is a line from the lighthouse to the ship. Measure the angle between North and the line.

Bearing of a ship from a lighthouse showing the angle

Measure the angle. A bearing must be three digits, so a 0 is required at the front of the angle.

Answer: 055º

Example 2

What is the reciprocal bearing of the lighthouse from the ship?

Reciprocal Bearing of a ship from a lighthouse

Reciprocal Bearing of a ship from a lighthouse showing the angle

The reciprocal bearing is 180º different to the original bearing. 55 + 180 = 235º.

It is always worth drawing or sketching the bearing to check that the answer is sensible.

Answer: 235º