PY Módulo de navegación, Andalucía 2023

Junta de Andalucía · 2ª convocatoria · 20 questions

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• The great circle on the Earth’s surface perpendicular to its axis is called:
• Can a GNSS position be put straight onto the paper chart?
• When using the sea clutter control:
• Crossing a transit, we take its compass bearing. To work out the compass total correction:
• Wind pushes a boat sideways, so her direction of travel differs from the true course. The angle between them is:
• What is AIS?
• Raster charts:
• While crossing the leading line of Cabo Roche and Cape Trafalgar lighthouses, you observe it at a compass bearing of 316º (variation 2º W). Calculate the total compass error:
• We sail on true course 260º at 8 knots. At ship’s clock 19:30 we are at 35º 55′ N and 005º 55′ W. A N wind gives 15º of leeway and a current sets NW at 3 miles an hour. Calculate the position at 21:00.
• We sail at 11 knots on compass course 270º, with a SW wind giving 15º of leeway and a current setting 050º at 4 miles an hour. Variation = 6º NE, deviation = +8º. Calculate the course made good.
• At ship’s clock 12:30 on 17 November 2023, we are at 26° 00.0′ S, 055° 00.0′ W. We sail at 10 knots on true course 135º. At 22:00 we set course for 26° 00.0′ S, 053° 00.0′ W. Calculate the true course to reach that point.