{"data":{"id":"us/46-cfr-4.03-65","jurisdiction":"us","citation":"46 CFR 4.03-65","heading":"-65 Significant harm to the environment.","body":"Significant harm to the environment means—\n(a) In the navigable waters of the United States, a discharge of oil as set forth in 40 CFR 110.3 or a discharge of hazardous substances in quantities equal to or exceeding, in any 24-hour period, the reportable quantity determined in 40 CFR part 117;\n(b) In other waters subject to the jurisdiction of the United States, including the EEZ—\n(1) A discharge of oil in excess of the quantities or instantaneous rate permitted in 33 CFR 151.10 or 151.13 during operation of the ship; or\n(2) A discharge of noxious liquid substances in bulk in violation of §§ 153.1126 or 153.1128 of this chapter during the operation of the ship; and\n(c) In waters subject to the jurisdiction of the United States, including the EEZ, a probable discharge of oil, hazardous substances, marine pollutants, or noxious liquid substances. The factors you must consider to determine whether a discharge is probable include, but are not limited to—\n(1) Vessel, floating OCS facility, or MODU location and proximity to land or other navigational hazards;\n(2) Weather;\n(3) Tide current;\n(4) Sea state;\n(5) Traffic density;\n(6) The nature of damage to the vessel, floating OCS facility, or MODU; and\n(7) Failure or breakdown aboard the vessel, floating OCS facility, or MODU, its machinery, or equipment.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER A—PROCEDURES APPLICABLE TO THE PUBLIC","PART 4—MARINE CASUALTIES AND INVESTIGATIONS","Subpart 4.03—Definitions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"5ec0b2488c50b0d25dbc9eb80c72bbf68b4a50c8fed5ad5a2f0d74f69c4af426","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-4.03-60","next":"us/46-cfr-4.03-70"},"notice":"GroundRules: Original legal text. Not legal advice."}