Question 34Navigation Problems

70% to pass

You are steering 154° per gyrocompass. The wind is northeast by east, causing 4° leeway. The gyro error is 3° east, variation is 11° west, and deviation is 7°E. What is the true course made good?

A 158°T
B 164°T
C 161°T
D 151°T
AI Explanation

The correct answer is C) 161°T. To arrive at this answer, we need to account for the various compass errors and leeway. Given information: - Steering 154° per gyrocompass - Wind is northeast by east, causing 4° leeway - Gyro error is 3° east - Variation is 11° west - Deviation is 7° east To find the true course made good, we need to apply the following corrections: Gyrocompass reading: 154° Gyro error: +3° (east) Variation: -11° (west) Deviation: +7° (east) Leeway: +4° The true course made good is therefore 154° + 3° - 11° + 7° + 4° = 161°T. The other options are incorrect because they do not properly account for the combination of the given compass errors and leeway.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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