What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?
Official USCG Answer & Rule Citation
Correct Answer: Option D — Only certain stars are included and sights must be limited to those stars.
Pub 249 Volume I precomputes data for only seven selected stars per 10 degrees of LHA Aries. Consequently, mariners are strictly limited to using these specific preselected stars for sights, representing the primary operational constraint of the tables.
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