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A HRB 10:30 entramos en Tánger con un calado máximo de 2,40 m y nos dan atraque en la marina del puerto deportivo con sonda en la carta de 2,50 m, según el anuario de mareas del año en curso obtenemos los siguientes datos: altura de la bajamar más próxima 0,35 corrección aditiva por intervalo de llegada 0,15m. Calcular la sonda bajo la quilla que tenemos.At ship’s clock 10:30 we enter Tangier with a maximum draught of 2.40 m and are given a berth in the marina with a charted sounding of 2.50 m. From the current tide tables: nearest low water height 0.35, additive correction for the arrival interval 0.15 m. Calculate the water under the keel:
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Correct answer: c) 0.60 metres
Why it is correct
2.50 + 0.35 + 0.15 − 2.40 = 0.60 m.
Why the others are not
- a) The result is different.
- b) The result is different.
- d) The result is different.
How to work it out in the exam
- Water under the keel = charted sounding + height of tide − draught.
- The height of tide is the low water plus the additive correction from the Anuario.
Where this question comes from
- Región de Murcia · 2025 · 1ª convocatoria · PY Tipo 1 · question 40 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.