You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?

Correct Answer: Option A — LONG 40°33.5'W

Mercator sailing uses the difference in meridional parts to find the change in longitude. Given the departure latitude, arrival latitude, and distance, calculate the difference in latitude and the corresponding meridional difference. Applying these to the departure longitude yields an arrival longitude of 40°33.5'W.