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?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Two green lights
US Army Corps of Engineers regulations for fixed locks and dams specify that two green lights displayed at position D indicate the safe navigable pass or open channel alignment for approaching tows and vessels.
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