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Se encuentran en un punto -A- de la ruta hacia el Estrecho de Gibraltar= 36º 31,2´N 006º 31,1´W y dan rumbo hacia otro punto ya en la zona del Estrecho= 36º 14,2´N 006º 10,3´W y calculan el rumbo loxodrómicoThey are at a point A on the way to the Strait of Gibraltar = 36º 31.2´N 006º 31.1´W and set course for another point in the Strait = 36º 14.2´N 006º 10.3´W and work out the rhumb line course

Show the answer

Correct answer: b) 135º

Why it is correct

Δlat = 17′ S. Departure = 20.8′ × cos 36º23′ = 16.7′ E. Course S 44.6º E, or 135º.

Why the others are not

  • a) It does not match the working.
  • c) It does not match the working.
  • d) It does not match the working.

How to work it out in the exam

  1. Find the difference of latitude and the departure: ΔL × cos(mean latitude).
  2. Course = arctan(A / Δlat). Distance = root of the sum of squares.

Where this question comes from

Try it: Navigation calculations

Pending instructor review. Machine translation, not reviewed.