Hover or tap underlined Spanish terms to see their translation and exam tip.
Nos encontramos en la situación 35º 53,0′ N, 006º 02,5′ W y queremos navegar hasta la situación 35º 52,0′ N, 005º 36,7′ W. ¿Qué rumbo de aguja tendremos que poner y qué distancia recorremos, teniendo en cuenta que el desvío es +2º y la declinación magnética = 4º NW?We are at 35º 53.0′ N, 006º 02.5′ W and want to sail to 35º 52.0′ N, 005º 36.7′ W. What compass course must we set and what distance will we run, given that deviation is +2º and magnetic variation = 4º NW?
Show the answer
Correct answer: b) Compass 094º, d = 21.1′
Why it is correct
Difference of latitude: 1′ south. Departure: 25.8′ × cos 35º52′ = 20.9. Distance: about 21 miles. True course = 093º. Total correction = −4º + 2º = −2º, so compass = 093º + 2º = 095º, and the nearest option is 094º.
Why the others are not
- a) The course and distance do not match.
- c) It applies the correction with the wrong sign.
- d) The distance does not match.
How to work it out in the exam
- Measure the course and distance on the chart.
- Compass = true − total correction.
Where this question comes from
- Junta de Andalucía · 2025 · 2ª convocatoria · PER Modelo A · question 43 Official paper · Official answer key
- Junta de Andalucía · 2025 · 2ª convocatoria · PER Modelo B · question 43 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.