Hover or tap underlined Spanish terms to see their translation and exam tip.
El 27 de enero del 2024 el yate NOEGA parte de la posición l=39º 30` N L=000º 17`W hacia las coordenadas l: 39º 00`N L: 001º 15`E. Calcular Rumbo directo y distancia navegada hasta la situación final.On 27 January 2024 the yacht NOEGA leaves position l=39º 30` N L=000º 17`W for l: 39º 00`N L: 001º 15`E. Calculate the direct course and distance run to the final position.
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Correct answer: d) R=112.8º Distance= 77.5 miles.
Why it is correct
Δlat = 30′ S. ΔLong = 92′ E, crossing Greenwich. Departure = 92′ × cos 39º15′ = 71.2′. Course 112.8º, distance about 77 miles.
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 the difference of latitude and the departure: ΔL × cos(mean latitude).
- Course = arctan(A / Δlat). Distance = root of the sum of squares.
Where this question comes from
- Región de Murcia · 2024 · 3ª convocatoria · PY Tipo 1 · question 38 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.