46 C.F.R. § 35.20-30
Flashing the rays of a searchlight or other blinding light—T/ALL
No person shall flash, or cause to be flashed, the rays of a search light or other blinding light onto the bridge or into the pilothouse of any vessel under way.
No person shall flash, or cause to be flashed, the rays of a search light or other blinding light onto the bridge or into the pilothouse of any vessel under way.