Hover or tap underlined Spanish terms to see their translation and exam tip.
Un buque se encuentra en situación 13º N, 176º 30,0´E y desea navegar hasta el punto 11º S, 174º 50,0´E. Calcular el rumbo directo (Aproximar al medio grado) y distancia a navegar.A ship at 13º N, 176º 30.0´E wants to sail to 11º S, 174º 50.0´E. Calculate the direct course (to the nearest half degree) and distance.
Show the answer
Correct answer: c) 184º 1443 miles
Why it is correct
Δlat = 1440′ S, crossing the Equator. Departure = 100′ W. Course S 4º W, or 184º, and 1443 miles.
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 · 2018 · 1ª convocatoria · PY Módulo de navegación B · question 20 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.