US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 4 — MARINE CASUALTIES AND INVESTIGATIONSSubpart 4.40—Coast Guard—National Transportation Safety Board Marine Casualty Investigations4.40-146 C.F.R. § 4.40-1Purpose.Last amended: 2016Year: 2026Length: 30 wordsOfficial source Cite as 46 C.F.R. § 4.40-1 (2026)This subpart prescribes the joint regulations of the National Transportation Safety Board and the Coast Guard for the investigation of marine casualties. [CGD 82-034, 47 FR 45882, Oct. 14, 1982]Next46 C.F.R. § 4.40-3