Hover or tap underlined Spanish terms to see their translation and exam tip.
Una embarcación a motor se encuentra en el punto A) de coordenadas 35º40´N; 007º15´W, desde dicho punto, a una velocidad de 6,5 nudos se dirige al punto B) de coordenadas 35º41´N; 006º15´W. ¿Cuál de las siguientes respuestas más se aproxima al rumbo y distancia entre la posición A) y B)?A motor boat is at point A) 35º40´N; 007º15´W, and from there, at 6.5 knots, heads for point B) 35º41´N; 006º15´W. Which answer is closest to the course and distance from A) to B)?
Show the answer
Correct answer: b) Course 088.8º; Distance 48.8 miles.
Why it is correct
Δlat = 1′ N. Departure = 60′ × cos 35º40′ = 48.8′ E. Course 088.8º, 48.8 miles.
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
- Ministerio de Transportes (Madrid) · 2023 · Convocatoria de abril · PY Test 1 · question 38 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2023 · Convocatoria de abril · PY Test 2 · question 37 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.