46 CFR §120.420
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
All vessels must have navigation lights that are in compliance with the applicable sections of the International and Inland Navigation Rules, except that a vessel of more than 19.8 meters (65 feet) in length must also have navigation lights that meet UL 1104, “Marine Navigation Lights,” or other standard specified by the Commandant.