MB is the abbreviation for which navigation term?

• A. Magnetic Bearing
• B. Mean Bearing
• C. Measured Baseline
• D. Magnetic Elevation

Answer: (B)

Magnetic Bearing is the term abbreviated MB. It refers to the direction from magnetic north to a line drawn to a destination or waypoint, expressed as an angle clockwise from magnetic north. In flight and navigation, bearings are often tied to magnetic north because the aircraft’s compass aligns with magnetic north, so pilots use magnetic bearings to plan and track routes. When you have a target and know its magnetic bearing from your position, you can work out the heading or course needed, keeping in mind that true bearings (relative to true north) may require adjustment for variation and wind. The other options aren’t standard navigation terms for MB: mean bearing, measured baseline, and magnetic elevation aren’t the commonly used abbreviation for the direction you reference to magnetic north.