Hover or tap underlined Spanish terms to see their translation and exam tip.
A las 14:00 horas, en situación Latitud = 35º 50’N y Longitud = 006º 10’W, navegamos al Rumbo verdadero 060º y velocidad de 6 nudos. Calcule la situación a las 17:00 horas.At 14:00, at Latitude 35º 50’N and Longitude 006º 10’W, we sail on true course 060º at 6 knots. Calculate the position at 17:00.
Show the answer
Correct answer: b) 35º 58.8’N – 005º 51.0’W
Why it is correct
3 hours at 6 knots is 18 miles. North: 18 × cos 60º = 9′, latitude 35º 59′. East: 18 × sin 60º = 15.6 miles, which is 19.2′ of longitude. That gives 005º 50.8′ W, very close to option b.
Why the others are not
- a) It goes far too little to the east.
- c) It swaps the north and east parts.
- d) It goes far too little to the east.
How to work it out in the exam
- On a course near east, longitude changes more than latitude.
- Distance = speed × time. Draw the course and measure on the chart.
Where this question comes from
- Región de Murcia · 2024 · 3ª convocatoria · PER Tipo 1 · question 44 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.