Navigation Problems USCG Question #777 (Set 22)

Determine the great circle distance and initial course from LAT 08°53.0'N, LONG 79°31.0'W to LAT 33°51.5'S, LONG 151°13.0'E.

Official USCG Answer & Rule Citation

Correct Answer: Option A — 7635 miles, 233.9°T

Great circle sailing formulas from Bowditch Volume II solve the spherical triangle using latitude and longitude coordinates. Applying the cosine-haversine formula yields the initial true course of 233.9°T and a total great circle distance of 7635 miles.

100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.