A vessel at LAT 10°22.0'S, LONG 7°18.0'E, heads for a destination at LAT 6°52.0'N, LONG 57°23.0'W. Determine the true course and distance by Mercator sailing.
Official USCG Answer & Rule Citation
Correct Answer: Option D — 285°T, 4025.7 miles
Mercator sailing requires calculating the difference in latitude and the difference in meridional parts to determine the course angle and distance. Using the coordinates provided, the calculated true course is 285°T and the distance is 4025.7 miles, following the standard mathematical procedures for rhumb line navigation.
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