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Al ser HRB = 08:00 del 21 de marzo de 2026, nos encontramos en situación 37° 34,0′ N, 000° 52,0′ E. Navegamos a 11 nudos a los siguientes rumbos durante los tiempos que se indican: Rv = 240°, durante 6 horas Rv = 180°, durante 3 horas Durante toda la navegación nos afecta una corriente de Rc = sudoeste (SW) e intensidad horaria = 3 millas, que se mantiene constante hasta el fin de la navegación. Calcular la situación a HRB = 17:00 del 21 marzo de 2026.At ship’s clock 08:00 on 21 March 2026, we are at 37° 34.0′ N, 000° 52.0′ E. We sail at 11 knots: true course 240° for 6 hours, true course 180° for 3 hours. Throughout, a current sets southwest (SW) at 3 miles an hour, constant to the end. Calculate the position at 17:00 on 21 March 2026.
Show the answer
Correct answer: a) 36º 08.9′ N, 000º 43.2′ W
Why it is correct
66 miles at 240º, 33 at 180º and 27 of current at 225º. Total: 85.1′ S and 76.2′ W. Arrival: 36º 08.9′ N, 000º 43.2′ W.
Why the others are not
- b) It does not match the working.
- c) It does not match the working.
- d) It does not match the working.
How to work it out in the exam
- Break each leg and the current into north-south and east-west.
- Add them. Turn departure into longitude: ΔLong = departure / cos(mean latitude).
Where this question comes from
- Junta de Andalucía · 2026 · 1ª convocatoria · PY Módulo de navegación · question 20 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.