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- Q135 - Navigation Problems: Oceans
633. A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the distance by Mercator sailing.
The Mercator sailing distance is calculated as D = ΔLat / cos (C), where ΔLat is the latitude difference in minutes and C is the course. Given the latitude difference of 284 minutes and an approximate course of 58.1, the distance is 538.2 nautical miles.
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