Question 36Navigation Problems70% to pass
You desire to make good a true course of 129°. The variation is 7°E, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. An easterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
AI Explanation
The correct answer is D) 114°psc.
To arrive at this answer, we need to apply the following formula:
True Course = Compass Course + Variation + Deviation + Leeway
Given information:
- True Course = 129°
- Variation = 7°E
- Magnetic Compass Deviation = 4°E
- Gyrocompass Error = 2°W
- Leeway = 4°E
Applying the formula:
Compass Course = True Course - Variation - Deviation - Leeway
Compass Course = 129° - 7°E - 4°E - 4°E
Compass Course = 114°psc
The other options are incorrect because they do not correctly apply the formula to arrive at the Compass Course that will make the True Course of 129° good.
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