Hover or tap underlined Spanish terms to see their translation and exam tip.
Situados en l = 43º 09,6’ N y L = 009º 47,4’ W, calcular el rumbo inicial (Ri) y distancia ortodrómica (Dort) para navegar por círculo máximo hasta el punto P de: lp = 06º 48’ N y Lp = 058º 08’ W.At l = 43º 09.6’ N and L = 009º 47.4’ W, calculate the initial course (Ri) and great circle distance to sail to point P at lp = 06º 48’ N and Lp = 058º 08’ W.
Show the answer
Correct answer: c) Ri = 244º, 3,346.6 miles.
Why it is correct
Distance: about 3346 miles. Initial course: 244º.
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
- cos D = sin l1 sin l2 + cos l1 cos l2 cos ΔL, with south latitude negative.
- Turn D into minutes: each minute is a mile.
- tan R = sin ΔL / (cos l1 tan l2 − sin l1 cos ΔL).
- Convert the result to circular by the direction of travel.
Where this question comes from
- Región de Murcia · 2024 · 3ª convocatoria · CY Tipo 1 · question 20 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.