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A Hrb: 10h25m, salimos desde el puerto de Ceuta (luz verde de la bocana), y ponemos proa a Punta Europa. Si nuestra velocidad es de 12 nudos. ¿Qué tiempo tardaremos en llegar a Punta Europa?.At Hrb 10h 25m you depart Ceuta port (green entrance light) heading directly for Punta Europa at a speed of 12 knots. How long will it take to reach Punta Europa?
Show the answer
Correct answer: d) 1h 05 m
Why it is correct
The charted distance from Ceuta green entrance light (35º 53.8′ N, 005º 18.6′ W) to Punta Europa lighthouse (36º 06.5′ N, 005º 20.7′ W) is 13.0 miles. At 12 knots this takes (13.0 / 12) × 60 = 65 minutes = 1h 05m.
Why the others are not
- a) Does not match the 65 minutes needed to cover 13 miles at 12 knots.
- b) Does not match the 65 minutes needed to cover 13 miles at 12 knots.
- c) Does not match the 65 minutes needed to cover 13 miles at 12 knots.
How to work it out in the exam
- Measure on the chart the distance between Ceuta entrance and Punta Europa: 13.0 miles.
- Divide by 12 knots: 13 / 12 = 1h 05m.
Where this question comes from
- Región de Murcia · 2021 · 2ª convocatoria · PER Tipo 1 · question 45 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.