BDOC Navigation And Seamanship (NSS) Practice Exam

Why is a gnomonic chart useful for long ocean passages?

Magnetic bearings require no correction Depth contours remain equally spaced All parallels of latitude are straight and equally spaced Great-circle routes plot as straight lines

Correct Answer:

Great-circle routes plot as straight lines

Explanation:

On a gnomonic projection great circles appear as straight lines, which helps plan shortest-distance ocean routes.

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