Navigation General · Compass Error
Variation is 8° E and deviation is 3° W. The total compass error is:
- A11° E
- B5° E✓ Correct
- C5° W
- D11° W
Explanation
Compass error = 8°E + (−3°W) = 8 − 3 = 5°E. Since variation (8°E) is larger, the combined error is named East: 5°E.
Authority: Bowditch (Pub. 9)
Practice the full Navigation General bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Navigation General questions
- Compass Error
Compass error is the combined result of:
- Compass Error
Variation is 4° W and deviation is 9° W. The total compass error is:
- Compass Error
A vessel steers compass course 060°. Total compass error is 6° W. The true course is:
- Compass Error
A vessel must make good a true course of 300°. Total compass error is 4° E. The compass course to steer is:
- Compass Error
A gyrocompass error of 2° High (East) means the gyro reads:
- Compass Error
What is the primary advantage of a gyrocompass over a magnetic compass aboard a steel vessel?