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Desde la situación l = 44°-36',5 N y L = 001°- 15',5 W, se navega al rumbo directo = 239° una distancia de 125 millas. Calcular la situación de estima (le y Le) de llegada mediante una derrota loxodrómica.From l = 44°-36.5' N and L = 001°- 15.5' W, we sail on direct course 239° for 125 miles. Calculate the dead reckoning arrival position by rhumb line.
Show the answer
Correct answer: d) 43°-32.1' N and 003°- 44.6' W.
Why it is correct
Δlat = 64.4′ S. Departure = 107.1′ W. ΔLong = 149.1′. Arrival: 43º 32.1′ N, 003º 44.6′ 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 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
- Ministerio de Transportes (Madrid) · 2020 · Convocatoria de diciembre · PY Test 1 · question 32 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.