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- Master & Mate (Oceans or Near Coastal (Limited Tonnage: Less Than 200 GRT)) »
- Q159 - Navigation Problems: Oceans
271. A vessel at LAT 18° 54' N, LONG 73° 00' E, heads for a destination at LAT 13° 12' N, LONG 54° 00' E. Determine the true course and distance by Mercator sailing.
Mercator sailing yields a true course of 253 and a distance of 1154 nautical miles. This is determined by calculating the difference in meridional parts and longitude to find the course, then using the latitude difference and the course to calculate the distance.
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