Question 372Navigation General70% to pass
An alternating light _______________.
AI Explanation
The correct answer is C) shows a light that changes color.
An alternating light is a navigation light that alternates between two different colors, typically red and green. This type of light is used to mark the center of a navigable channel or to indicate the preferred route for vessels. The alternating color change helps to distinguish this type of light from a fixed-color light, which would not change color.
The other answer choices are incorrect because they do not accurately describe the defining characteristic of an alternating light, which is the change in color. Option A describes a light marking a lesser-used channel, option B describes a light with varying length of illumination, and option D describes a light used as a replacement, none of which are accurate for an alternating light.
Related Questions
#370 You are approaching a multiple-span bridge at night. The main navigational channel span will be indicated by _______________.#371 You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate? #373 Clearance gauges at bridges indicate _______________.#374 Buoys and day beacons exhibiting a yellow triangle or square painted on them are used _______________.#375 When a dual purpose marking is used, the mariner following the Intracoastal Waterway should be guided by the _______________.