Hover or tap underlined Spanish terms to see their translation and exam tip.
Calcular el rumbo directo para navegar desde el punto 29º 15' S, 179º 35' W, hasta el punto 25º 20' N, 178º 15' E.Calculate the direct course to sail from 29º 15' S, 179º 35' W to 25º 20' N, 178º 15' E.
Show the answer
Correct answer: c) N 002º W
Why it is correct
It crosses the 180º meridian: ΔLong = 2º 10′ westward. We go north, and the course is N 2º W.
Why the others are not
- a) It does not match the working.
- b) It does not match the working.
- d) It does not match the working.
How to work it out in the exam
- Find the difference of latitude and the departure: ΔL × cos(mean latitude).
- Course = arctan(A / Δlat). Distance = root of the sum of squares.
Where this question comes from
- Junta de Andalucía · 2016 · 1ª convocatoria · PY Módulo de navegación · question 17 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.