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Si Salimos de Barbate (Farola roja con características Fl.R.4s5M) con rumbo verdadero 175º y una vez navegadas 12 millas. ¿A qué distancia nos encontraremos de Isla de Tarifa?Departing Barbate (red breakwater light Fl.R.4s5M) on true course 175º, after running 12 miles how far are you from Isla de Tarifa?
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Correct answer: c) 14.2 miles
Why it is correct
Leaving the Barbate red breakwater light (36º 11.3′ N, 005º 55.3′ W) on Rv = 175º for 12 miles brings you to 35º 59.4′ N, 005º 54.0′ W. The distance from there to Isla de Tarifa lighthouse (36º 00.0′ N, 005º 36.6′ W) is 14.2 miles.
Why the others are not
- a) Does not match the distance measured between the 12-mile position (35º 59.4′ N, 005º 54.0′ W) and Isla de Tarifa.
- b) Does not match the distance measured between the 12-mile position (35º 59.4′ N, 005º 54.0′ W) and Isla de Tarifa.
- d) Does not match the distance measured between the 12-mile position (35º 59.4′ N, 005º 54.0′ W) and Isla de Tarifa.
How to work it out in the exam
- Plot 12 miles on Rv = 175º from the red light at Barbate harbour.
- Measure with dividers the distance from that point to Isla de Tarifa lighthouse: 14.2 miles.
Where this question comes from
- Junta de Andalucía · 2021 · 1ª convocatoria · PER Modelo A · question 45 Official paper · Official answer key
- Junta de Andalucía · 2021 · 1ª convocatoria · PER Modelo B · question 43 Official paper · Official answer key
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Pending instructor review. Machine translation, not reviewed.