{"data":{"id":"us/46-cfr-78.23-1","jurisdiction":"us","citation":"46 CFR 78.23-1","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.\n(b) [Reserved]","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER H—PASSENGER VESSELS","PART 78—OPERATIONS","Subpart 78.23—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":"f7edc86209e7a5f4e313779a50caabd94a3eceb75a1590a938dafac9588b46d5","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-78.21-1","next":"us/46-cfr-78.27-1"},"notice":"GroundRules: Original legal text. Not legal advice."}