Question 3424Deck General70% to pass
A mobile offshore drilling unit must display obstruction lights when it is on the waters over the Outer Continental Shelf and is _______________.
AI Explanation
The correct answer is B) fixed to the seabed.
When a mobile offshore drilling unit is fixed to the seabed on the Outer Continental Shelf, it is considered a fixed structure and must display obstruction lights to mark its location for the safety of other vessels in the area. This is a requirement under the applicable regulations for mobile offshore drilling units operating on the Outer Continental Shelf.
The other answer choices are incorrect because a mobile offshore drilling unit under tow (A) or underway (C) would not be considered a fixed structure, and therefore would not be required to display obstruction lights under these specific regulations.
Related Questions
#3422 What agency is responsible for enforcing the rules for obstruction lights on mobile offshore drilling units? #3423 While in 150 feet water depth when the pitch angle of the COASTAL DRILLER is 1 degree, the platform pitch period for going on location should be longer than _______________.#3425 When dragging of an anchor occurs, you must either reposition it at greater range or _______________.#3426 When a mobile offshore drilling unit on the waters of the U.S. Outer Continental Shelf has more than one obstruction light, the lights must be operated to flash _______________.#3427 What color are obstruction lights on mobile offshore drilling units that are located on the waters of the U.S. Outer Continental Shelf seaward of the line of demarcation?