US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 188 — GENERAL PROVISIONSSubpart 188.10—Definition of Terms Used in This Subchapter188.10-3146 C.F.R. § 188.10-31Great Lakes.Last amended: 2016Year: 2026Length: 12 wordsOfficial source Cite as 46 C.F.R. § 188.10-31 (2026)Under this designation shall be included all vessels navigating the Great Lakes.Previous46 C.F.R. § 188.10-27Next46 C.F.R. § 188.10-33