Hover or tap underlined Spanish terms to see their translation and exam tip.
A las 07:45, situados en posición l= 35º50´N; L= 006º 01´W navegamos con Rumbo de aguja 080º y velocidad de máquinas 5 nudos. Durante la navegación el viento del noroeste produce un abatimiento de 5 grados a la vez que nos encontramos con una corriente de rumbo 250º con una intensidad horaria de la corriente de 2,5 nudos. ¿Cuál de las siguiente respuestas más se aproxima a nuestra posición a las 09:15 sabiendo que la corrección total es 5º(+)?At 07:45, at l= 35º50´N; L= 006º 01´W we sail on Compass Course 080º at engine speed 5 knots. A northwesterly gives 5 degrees of leeway and a current sets 250º at 2.5 knots. Which answer is closest to our position at 09:15, given the total correction is 5º(+)?
Show the answer
Correct answer: d) l= 35º48.6´N; L= 005º56.1´W.
Why it is correct
True 085º. The NW wind is to port: 090º. 7.5 miles and 3.75 of current at 250º. Arrival: 35º 48.7′ N, 005º 56.1′ W.
Why the others are not
- a) It does not match the working.
- b) It does not match the working.
- c) It does not match the working.
How to work it out in the exam
- Find each leg’s course, with leeway if any.
- Break each leg and the current into north-south and east-west, and add them.
- Turn departure into longitude: ΔLong = departure / cos(mean latitude).
Where this question comes from
- Ministerio de Transportes (Madrid) · 2024 · Convocatoria de abril · PY Test 1 · question 32 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2024 · Convocatoria de abril · PY Test 2 · question 40 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.