{"data":{"id":"us/46-cfr-196.20-1","jurisdiction":"us","citation":"46 CFR 196.20-1","heading":"-1 Unnecessary whistling prohibited.","body":"(a) The unnecessary sounding of the vessel's whistle is prohibited within any harbor limits of the United States.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER U—OCEANOGRAPHIC RESEARCH VESSELS","PART 196—OPERATIONS","Subpart 196.20—Whistling"],"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":"4d610c373551b91ef9f6a754d0fbc82d13d5dbf12524b8e9c06bc89ec54fa507","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-196.19-1","next":"us/46-cfr-196.25-1"},"notice":"GroundRules: Original legal text. Not legal advice."}