Navigation Problems USCG Question #822 (Set 24)

Determine the great circle initial course from LAT 07°05.0'N, LONG 81°45.0'W to LAT 21°15.0'N, LONG 157°40.0'W.

Official USCG Answer & Rule Citation

Correct Answer: Option A — 290°T

Applying spherical trigonometry as outlined in Bowditch for transoceanic passages, the great circle initial course from the Pacific coast of Central America to Honolulu, Hawaii, resolves mathematically to an initial true heading of 290°T.

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