US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 4 — MARINE CASUALTIES AND INVESTIGATIONSSubpart 4.03—Definitions4.03-2046 C.F.R. § 4.03-20Coast Guard district.Last amended: 2016Year: 2026Length: 19 wordsOfficial source Cite as 46 C.F.R. § 4.03-20 (2026)A Coast Guard district is one of the geographical areas whose boundaries are described in 33 CFR part 3.Previous46 C.F.R. § 4.03-15Next46 C.F.R. § 4.03-25