You desire to make good a true course of 329°. The variation is 13° W, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. A southerly wind produces a 1° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 337°psc
To find the compass course, convert the desired true course (329°) by applying leeway (1° to the right for southerly wind), then reverse the compass errors. Applying 13°W variation and 4°E deviation in reverse order (TVMDC) yields 337°psc to maintain the intended track.
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