On 13 August your 0345 ZT DR position is LAT 21°35.0'N, LONG 135°26.0'W. You are on course 052°T at a speed of 14 knots. What will be the zone time of sunrise at your vessel?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 0536
Determine sunrise time for the vessel's DR position by interpolating tabular sunrise data from the Nautical Almanac for the specific date and latitude, applying longitude time corrections and vessel motion adjustments per Bowditch to yield zone time 0536.
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