46 C.F.R. § 131.975 Searchlights.
Title 46 - Shipping
No person may flash, or cause to be flashed, the rays of a searchlight or other blinding light onto the bridge or into the pilothouse of any vessel, OSV or other, under way.
Title 46: Shipping
PART 131—OPERATIONS
Subpart I—Miscellaneous
§ 131.975 Searchlights.