Hover or tap underlined Spanish terms to see their translation and exam tip.
En un momento dado tomamos simultáneamente demora verdadera de Cabo Espartel = 216º y demora verdadera de Punta Malabata=115º. Desde esta situación damos rumbo para pasar a 3 millas de Punta Cires. ¿Dónde nos encontraremos después de navegar una distancia de 13 millas?Simultaneously observing true bearings Dv Cape Spartel = 216º and Dv Punta Malabata = 115º, you set course to pass 3 miles off Punta Cires. Where will you be after running 13 miles?
Show the answer
Correct answer: c) l = 35º 55.5' N; L = 005º 36.5' W.
Why it is correct
The intersection of Dv(Spartel) = 216º and Dv(Malabata) = 115º fixes the start at 35º 50.6′ N, 005º 52.8′ W. Laying the tangent to the 3-mile arc off Punta Cires (Rv = 069º) and measuring 13 miles along it gives l = 35º 55.5′ N, L = 005º 36.5′ W.
Why the others are not
- a) Does not match the point 13 miles from the start along the tangent 3′ off Punta Cires.
- b) Does not match the point 13 miles from the start along the tangent 3′ off Punta Cires.
- d) Does not match the point 13 miles from the start along the tangent 3′ off Punta Cires.
How to work it out in the exam
- Fix the start at the intersection of Dv(Spartel) = 216º and Dv(Malabata) = 115º (35º 50.6′ N, 005º 52.8′ W).
- Draw the tangent 3 miles off Punta Cires and measure 13 miles: 35º 55.5′ N, 005º 36.5′ W.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2023 · Convocatoria de junio · PER Test 1 · question 43 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2023 · Convocatoria de junio · PER Test 3 · question 45 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.