Question 384Navigation General70% to pass
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?
AI Explanation
The correct answer is A) Red over amber (yellow).
When any wickets of a dam or bear traps are open or partially open on the Illinois Waterway, it can create a set in the current conditions in the upper lock approach. According to the Inland Navigation Rules, the proper light display to indicate this condition is a red over amber (yellow) signal light. This alerts mariners to the presence of strong or dangerous currents in the area, allowing them to navigate cautiously.
The other answer choices are incorrect because they do not match the specific light display required for this situation on the waterway.
Related Questions
#382 Illustration D036NG below represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D? #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? #385 The white lights in a vertical line on a multiple-span bridge indicate _______________.#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 _______________.