Hover or tap underlined Spanish terms to see their translation and exam tip.
Un buque se encuentra en situación 26º 40' S, 177º 35' E y desea navegar hasta el punto 05º 15' S, 179º 28' W. Calcular el rumbo directo (aproximar al medio grado).A ship at 26º 40' S, 177º 35' E wants to sail to 05º 15' S, 179º 28' W. Calculate the direct course (to the nearest half degree).
Show the answer
Correct answer: b) 007.5º
Why it is correct
It crosses the 180º meridian eastward: ΔLong = 177′. Δlat = 1285′ N. Departure = 169′. Course N 7.5º E.
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
- 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 · 2025 · 1ª convocatoria · PY Módulo de navegación · question 20 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.