Determine the great circle distance and initial course from LAT 34°51.0'N, LONG 115°01.2'E to LAT 10°16.0'S, LONG 51°42.6'E.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 4493 miles, 245.6°T
Applying spherical trigonometry through the haversine formula for great circle sailing between the departure and arrival coordinates accounts for the earth's oblateness and yields a total distance of 4493 nautical miles with an initial great circle course of 245.6°T.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.