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- Q154 - Navigation Problems: Oceans
213. Determine the great circle distance and initial course from LAT 31°57.0'S, LONG 115°52.0'E to LAT 24°47.0'N, LONG 66°59.0'E.
The great-circle distance between the specified locations is 4407 nautical miles, and the initial course is 314.5T. This result is derived using the spherical law of cosines to calculate the central angle and the tangent initial-course formula, ensuring correct quadrant determination.
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