You desire to make good a true course of 279°. The variation is 8°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°E. A north-northwesterly wind produces 3° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 287°psc
True 279° + Leeway 3° (wind from north-northwest) = 282°. 282° + Variation 8°W = 290° Magnetic. 290° - Deviation 3°E = 287°psc. Always ensure the leeway correction is applied in the direction the wind is pushing the vessel to maintain the intended track.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.