Question 385Navigation General70% to pass
The white lights in a vertical line on a multiple-span bridge indicate _______________.
AI Explanation
The correct answer is B) the main channel.
The white lights in a vertical line on a multiple-span bridge indicate the location of the main navigable channel for vessels. This is a standard navigation aid that helps mariners identify the safest and deepest part of the waterway to transit. The other answer choices are incorrect because they do not accurately describe the purpose of these vertical white lights on a bridge.
Related Questions
#383 Illustration D037NG below represents a movable dam. If there is high water and the wickets are down so that there is an unobstructed navigable pass through the dam, what light(s) will be shown at D if the lock walls and piers are not awash? #384 What lights would you see on the Illinois water way when any wickets of the dam or bear traps are open, or partially open, which may cause a set in the current conditions in the upper lock approach? #386 You are approaching a vertical lift bridge. You know the span is fully open when _______________.#387 If the main channel under a bridge is marked with lights of the lateral system the adjacent bridge piers should be marked with _______________.#388 The channel under a bridge is marked with lights of the lateral system. The centerline of the channel shall be marked on the bridge by _______________.