Question 476Navigation General70% to pass
On charts of U.S. waters, a magenta marking is NOT used for marking a _______________.
AI Explanation
The correct answer is B) 5-fathom curve.
On nautical charts of U.S. waters, the magenta color is used to mark prohibited areas, such as restricted military zones or other areas where navigation is prohibited. Magenta is not used to mark the 5-fathom curve, which is a depth contour line representing areas with a depth of 5 fathoms (30 feet). Instead, the 5-fathom curve is typically shown on charts using a blue or black line. Lighted buoys and radio beacons are also not marked in magenta, but rather with their respective symbology and colors based on their characteristics.
Related Questions
#474 Chart legends which indicate a conspicuous landmark are printed in _______________.#475 What does the symbol shown in illustration D033NG below indicate on a chart? #477 The buoy symbol printed on your chart is leaning to the northeast. This indicates _______________.#478 The depth of water on a chart is indicated as 23 meters. This is equal to _______________.#479 Sometimes foreign charts are reproduced by NGA. On such a chart a wire dragged (swept) area may be shown in purple or _______________.