Question 388Navigation General70% to pass
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 _______________.
AI Explanation
The correct answer is B) an occulting white light.
The centerline of a navigable channel under a bridge is typically marked with an occulting white light. This is in accordance with the U.S. Aids to Navigation System, which specifies that the centerline of a navigable channel shall be marked by an occulting white light.
The other options are incorrect because: A) a flashing blue light is used to mark the location of a bridge pier or obstruction, not the centerline; C) three fixed white lights are not the standard marking for a channel centerline; and D) a yellow light is not used for this purpose in the lateral marking system.
Related Questions
#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 _______________.#389 A bridge over a navigable waterway is being repaired. There is a traveler platform under the bridge's deck that significantly reduces the vertical clearance. If required by the CG district commander, how will this be indicated at night? #390 You are upbound approaching a lock and dam and see two green lights in a vertical line. This indicates _______________.#391 You are downbound approaching a lock and see 3 green lights in a vertical line. This indicates _______________.