CFR›Title 50›Chapter II›Part 253›50 CFR Part 253 Subpart A Citation50 CFR Part 253 Subpart AContainsSection § 253.1CorpusDaily eCFRDisplayed edition2026-08-05Last updated2026-08-05 Subpart A—General Sections § 253.1 § 253.1 Purpose. Authority46 U.S.C. 53701 and 16 U.S.C. 4101 et seq.Source75 FR 78623, Dec. 16, 2010, unless otherwise noted.