46 C.F.R. § 151.03-45 Rivers.
Title 46 - Shipping
A designation for all vessels whose navigation is restricted to rivers and/or canals, exclusively.
Title 46: Shipping
PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
Subpart 151.03—Definitions
§ 151.03-45 Rivers.