On 28 September in DR position LAT 24°12.0'S, LONG 85°25.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 094°psc. The chronometer reads 11h 29m 42s and is 03m 30s slow. Variation in the area is 4°W. What is the deviation of the magnetic compass?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 2.4°E
Southern Hemisphere amplitude sights require applying local latitude and solar declination to compute true azimuth at the visible horizon, which establishes compass error when compared to the psc bearing.
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