Quick search by citation:

33 U.S. Code § 403b - Lighting at docks and boat launching facilities

Whenever the Secretary considers a permit application for a dock or a boat launching facility under section 403 of this title, the Secretary shall consider the needs of such facility for lighting from sunset to sunrise to make such facility’s presence known within a reasonable distance.

Statutory Notes and Related Subsidiaries
“Secretary” Defined

Secretary means the Secretary of the Army, see section 2201 of this title.