Determine the great circle initial course from LAT 29°46.0'S, LONG 30°26.0'E to LAT 31°52.0'S, LONG 115°22.0'E.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 117°T
Utilizing great circle computational methods detailed in Bowditch, the initial true course from Durban, South Africa, to Fremantle, Australia, is derived from the celestial triangle components, resolving precisely to an initial departure heading of 117°T.
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