Navigation and Compass Quiz

What is the purpose of a deviation table in navigation?

• To calculate tidal currents

• To account for compass errors caused by magnetic deviation

• To measure distances between celestial objects

• To plot the course on a map

What process is used to determine and record the deviation on various headings?

• Azimuth reading

• Swinging ship

• Magnetic calibration

• Course plotting

The cardinal points on a compass are located at which degrees?

• 0°, 90°, 180°, 270°

• 45°, 135°, 225°, 315°

• 11.25°, 33.75°, 56.25°, 78.75°

• 30°, 60°, 120°, 150°

In the 'boxing the compass,' how many divisions are commonly shown?

• 16

• 24

• 32

• 40

If a compass error (CE) is calculated as CE=Tc−Cc, what does Tc represent?

• True Course

• Compass Heading

• Magnetic Variation

• Gyro Heading

What is the angular equivalent of one point in compass navigation?

• 15°

• 11.25°

• 7.5°

• 9.75°

A ship's deviation on a heading of 217° is calculated using interpolation between 210° and 220°. The deviation at 210° is 2.0° W, and at 220°, it is 3.2° W. What is the deviation at 217°?

• 2.84° W

• 3.0° W

• 3.6° W

• 2.5° W

What type of compass error is caused by the ship's magnetism?

• Magnetic variation

• Gyro error

• Magnetic deviation

• True error

What is the acceptable limit for obtaining the magnetic compass bearing of an object?

• ±2°

• ±1°

• ±0.1°

• ±0.5°

Which quadrant represents angles between 90° and 180°?

• NE

• SE

• SW

• NW