General Navigation USCG Question #507 (Set 17)

When determining compass error by an azimuth of Polaris, you enter the Nautical Almanac with the __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — LHA Aries

Determining compass error by Polaris requires entering the Nautical Almanac with the Local Hour Angle of Aries (LHA Aries). The tabulated data for Polaris uses SHA and declination based on the vernal equinox, indexed directly by LHA Aries to calculate the true azimuth.

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