Hover or tap underlined Spanish terms to see their translation and exam tip.
¿A qué rumbo directo (Rd) deberemos navegar si queremos ir desde un punto A de l = 35º 46,8´N y L = 006º 00,2´W, hasta llegar a otro punto B de l = 35º 20,0´N y L = 006º 35,0´W?What direct course must we sail to go from point A at l = 35º 46.8´N and L = 006º 00.2´W to point B at l = 35º 20.0´N and L = 006º 35.0´W?
Show the answer
Correct answer: c) S46.6ºW
Why it is correct
Δlat = 26.8′ S. Departure = 34.8′ × cos 35º33′ = 28.3′ W. Course S 46.6º 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 · 2021 · 1ª convocatoria · PY Módulo de navegación · question 18 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.