PY Módulo de navegación, Andalucía 2021

Junta de Andalucía · 1ª convocatoria · 20 questions

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• What is the great circle that is the origin of latitude called?
• How can the total correction (Ct) be found?
• What is the angle between the course made good and the true course called?
• To obtain the compass course (Ra) we use:
• With the radar set to head-up:
• What is departure (“apartamiento”)?
• On GNSS, the “XTE” indication means:
• On 10 December 2021 at 02:20 steering Ra = 142º at 12 knots (deviation –6º, NE wind causing 6º leeway), Cape Trafalgar bears 052º Port relative, and at 02:50 it bears 122º Port relative. Find your position at 02:20:
• While crossing the opposition line of Punta Alcázar and Isla de Tarifa lighthouses, you take a compass bearing of Punta Alcázar Da = 173º. What is the total compass error?
• At Hrb 18-24 a yacht in l = 36º 11.0' N and L = 005º 13.0' W sets course for Ceuta port green light at 5 knots with a West wind causing 5º leeway and Ct = 8º NW. Find Ra and arrival time:
• On 22 May 2021 (dm 1º NW) at HRB 06:00, due N true of Tangier breakwater light and due W true of Punta Cires in a current Rc = E, Ihc = 3 knots with a W wind (4º leeway, dev 2º NE), find Ra and Vb to reach 2' N of Tangier light at 06:30:
• A yacht located 7 miles due North true of Punta Cires lighthouse steers compass course Ra = S65W (deviation 8º NW, variation 4º NW) at 12 knots. What is its position after steaming for 1 hour 15 minutes?
• What direct course must we sail to go from point A at l = 35º 46.8´N and L = 006º 00.2´W to point B at l = 35º 20.0´N and L = 006º 35.0´W?