Hover or tap underlined Spanish terms to see their translation and exam tip.
¿Qué situación tendremos si, navegando al Rumbo verdadero S 32 E, obtenemos simultáneamente marcación del faro de Punta Alcazar 30º babor y marcación del faro de Punta Malabata 65º estribor?Steering true course S 32 E, you simultaneously obtain relative bearings of 30º Port to Punta Alcázar lighthouse and 65º Starboard to Punta Malabata lighthouse. What is your position?
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Correct answer: d) l = 35º 54.0' N L = 005º 41.0' W.
Why it is correct
True course S 32º E equals Rv = 180º − 32º = 148º. True bearings are Dv(Punta Alcázar) = 148º − 30º = 118º and Dv(Punta Malabata) = 148º + 65º = 213º, intersecting on the chart at l = 35º 54.0′ N, L = 005º 41.0′ W.
Why the others are not
- a) Does not match the intersection of Dv(Alcázar) = 118º and Dv(Malabata) = 213º.
- b) Does not match the intersection of Dv(Alcázar) = 118º and Dv(Malabata) = 213º.
- c) Does not match the intersection of Dv(Alcázar) = 118º and Dv(Malabata) = 213º.
How to work it out in the exam
- Convert S 32º E to three-figure notation (Rv = 148º) and find Dv(Alcázar) = 118º and Dv(Malabata) = 213º.
- Plot their reciprocals (298º from Alcázar and 033º from Malabata): 35º 54.0′ N, 005º 41.0′ W.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2020 · Convocatoria de diciembre · PER Test 4 · question 45 Official paper · Official answer key
Try it: Navigation calculations
Pending instructor review. Machine translation, not reviewed.