Navigation Problems USCG Question #449 (Set 13)

You desire to make good a true course of 203°. The variation is 19°E, magnetic compass deviation is 2°W, and gyrocompass error is 1°E. A westerly wind produces a 3° 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 B — 189°psc

To find the steering course, reverse the process: True 203° + Leeway 3° (wind from west) = 206°. 206° - Variation 19°E = 187° Magnetic. 187° + Deviation 2°W = 189°psc. Always reverse the signs when working from True to Compass to ensure accurate steering instructions.

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