The correction tables in the Nautical Almanac for use with Moon sights do NOT include the effects of __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — instrument error
The Nautical Almanac provides correction tables for Moon sights to account for parallax, semidiameter, and augmentation, which are inherent to the Moon's proximity and appearance. Instrument error, however, is a mechanical or observational discrepancy specific to the individual sextant and must be applied separately by the navigator during sight reduction.
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