US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 90 — GENERAL PROVISIONSSubpart 90.10—Definition of Terms Used in This Subchapter90.10-3346 C.F.R. § 90.10-33Rivers.Last amended: 2016Year: 2026Length: 33 wordsOfficial source Cite as 46 C.F.R. § 90.10-33 (2026)Under this designation shall be included all vessels whose navigation is restricted to rivers and/or canals exclusively, and to such other waters as may be so designated by the Coast Guard District Commander.Previous46 C.F.R. § 90.10-30Next46 C.F.R. § 90.10-35