Spanish original · English

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A la llegada a Tánger, les dan atraque en la Marina del Real Club Náutico con sonda de carta= 2,05 metros, siendo el calado máximo del yate= 2,10 metros y obtienen del Anuario de Mareas del año en curso los siguientes datos:  Altura de la bajamar más próxima= 0,54 metros  Corrección aditiva por intervalo horario= 1,00 metros Y calculan la sonda bajo quilla:On arrival at Tangier, they are given a berth in the Marina of the Real Club Náutico with a charted sounding = 2.05 metres, the yacht’s maximum draught being 2.10 metres, and obtain from the current Tide Tables: nearest low water height = 0.54 metres; additive correction for the time interval = 1.00 metres. And they work out the water under the keel:

Show the answer

Correct answer: a) 1.49 metres

Why it is correct

2.05 + 0.54 + 1.00 − 2.10 = 1.49 m.

Why the others are not

  • b) The result is different.
  • c) The result is different.
  • d) The result is different.

How to work it out in the exam

  1. Water under the keel = charted sounding + height of tide − draught.
  2. The height of tide is the low water plus the additive correction from the Anuario.

Where this question comes from

Try it: Tide trainer

Pending instructor review. Machine translation, not reviewed.