Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

Navegamos al rumbo verdadero = 260º a 8 nudos de velocidad. A HRB = 19:30 nos encontramos en situación 35º 55′ N y 005º 55′ W. Sopla viento del N que nos produce un abatimiento de 15º y nos afecta una corriente de Rc = NW e intensidad horaria = 3 millas. Calcular la situación a HRB = 21:00.We sail on true course 260º at 8 knots. At ship’s clock 19:30 we are at 35º 55′ N and 005º 55′ W. A N wind gives 15º of leeway and a current sets NW at 3 miles an hour. Calculate the position at 21:00.

Show the answer

Correct answer: c) 35º 53.1′ N, 006º 12.4′ W

Why it is correct

The north wind is to starboard: 245º. 12 miles and 4.5 of current NW. Arrival: 35º 53.1′ N, 006º 12.4′ W.

Why the others are not

  • a) It does not match the working.
  • b) It does not match the working.
  • d) It does not match the working.

How to work it out in the exam

  1. Find each leg’s course, with leeway if any.
  2. Break each leg and the current into north-south and east-west, and add them.
  3. Turn departure into longitude: ΔLong = departure / cos(mean latitude).

Where this question comes from

Try it: Navigation calculations

Pending instructor review. Machine translation, not reviewed.