StacksVerified U.S. regulatory reference

46 CFR §140.720

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each towing vessel must be equipped with navigation lights, shapes, and sound signals in accordance with the International Regulations for Prevention of Collisions at Sea (COLREGS) or 33 CFR part 84 as appropriate to its area of operation.