Hover or tap underlined Spanish terms to see their translation and exam tip.
En situación l= 36º-00,0´ N L= 006º-20,0´ W, Vhb= 6 nudos. A HRB= 19-00 navegamos al Rv= 290º. A HRB= 23-00 cambiamos al Rv= 260º hasta HRB= 04- 00. Durante toda la estima nos afecta corriente de Rc= 080º e Ihc= 4 nudos. Calcular la situación a HRB= 04-00At l= 36º-00.0´ N L= 006º-20.0´ W, speed 6 knots. At ship’s clock 19-00 we sail on true course 290º. At 23-00 we change to true course 260º until 04-00. Throughout, a current sets 080º at 4 knots. Calculate the position at 04-00.
Show the answer
Correct answer: c) l= 36º-09.2´ N L= 006º-40.6´ W
Why it is correct
Add three vectors: 24 miles at 290º, 30 miles at 260º, and 36 miles of current at 080º. Result: 9.3′ N and 16.6′ W, which is 20.6′ of longitude.
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
- One course for each leg, and the current for all 9 hours.
Where this question comes from
- Junta de Andalucía · 2015 · 1ª convocatoria · PY Módulo de navegación · question 18 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.