Navigation Problems USCG Question #1738 (Set 52)

Determine the great circle distance and initial course from LAT 24°52.0'N, LONG 78°27.0'W to LAT 47°19.0'N, LONG 06°42.0'W.

Official USCG Answer & Rule Citation

Correct Answer: Option C — 3593 miles, 048.1°T

Great circle distance and initial course are determined using the spherical law of cosines and the sine rule. The calculation yields a distance of 3593 nautical miles and an initial course of 048.1°T, providing the most efficient route between the specified coordinates in the North Atlantic.

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