USCG USCG GENNAV
Set 7 • Question #203 of 246
Launch Interactive Practice Room Civil twilight occurs at 0558 zone time on 30 December 1981. Your DR position at that time is LAT 15°02'N, LONG 46°02'W. Which statement concerning the planets available for morning sights is TRUE?
A
At 0558, Mars can be used for an ex-meridian observation.
✓ Correct Answer
B
Venus, Jupiter, and Mars sights will yield a good three line fix.
C
Saturn will be near the prime vertical.
D
Venus will be visible low in the western sky.
USCG NMC Regulatory Explanation
In USCG General Navigation principles (Bowditch, Light Lists, and Coast Pilots), regarding 'Civil twilight occurs at 0558 zone time on 30 December 1981. Your DR position at that time is LAT 15°02'N, LONG 46°02'W. Which statement concerning the planets available for morning sights is TRUE', the verified fact is: 'At 0558, Mars can be used for an ex-meridian observation.'.
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