CFR›Title 50›Chapter II›Part 217›Subpart O CorpusDaily eCFRDisplayed edition2026-05-21Last updated2026-05-21 Subpart O—XXXLink to an amendment published at 91 FR 28455, May 18, 2026. Previous N Subpart N—Subpart N—Taking and Importing Marine Mammals Incidental to U.S. Navy Construction at Portsmouth Naval Shipyard, Kittery, Maine Next Q Subpart Q—Taking Marine Mammals Incidental to Hilcorp Alaska, LLC Oil and Gas Activities in Cook Inlet, Alaska