Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

Derrota Loxodrómica. En situación l=37º10’N y L=000º15’E, con velocidad v=12 nudos, se da Rumbo a un punto (P) situado en l=36º02’N y L=005º20’W. Corrección total= + 5º. - Calcular el Rumbo de aguja y distancia al Punto P:Rhumb line. At l=37º10’N and L=000º15’E, at speed v=12 knots, we set course for a point (P) at l=36º02’N and L=005º20’W. Total correction = + 5º. Calculate the compass course and distance to Point P:

Show the answer

Correct answer: b) Ra=250.8º. D=277’

Why it is correct

Δlat = 68′ S. ΔLong = 335′ W. Departure = 268.9′. True 255.8º, distance 277 miles. Compass = 255.8º − 5º = 250.8º.

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.