On 16 November your 0800 ZT DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on a course of 252°T at a speed of 14.5 knots. What is the ZT of local apparent noon (LAN)?
Official USCG Answer & Rule Citation
Correct Answer: Option B — 1139
Calculate the longitude change between 0800 ZT and the estimated LAN. Convert the difference in longitude to time (4 minutes per degree). Apply this to the 1200 LMT meridian passage of the sun, adjusted for the vessel's movement, resulting in a ZT of 1139.
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