{"data":{"id":"us/46-cfr-131.965","jurisdiction":"us","citation":"46 CFR 131.965","heading":"Sounding of whistle.","body":"No vessel may sound its whistle within any harbor limits of the United States unless it needs to.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER L—OFFSHORE SUPPLY VESSELS","PART 131—OPERATIONS","Subpart I—Miscellaneous"],"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":"787a8b2583f50bfc17a05f5f735c7bf05cacde4e3288e5452906d11826516b2b","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-131.960","next":"us/46-cfr-131.970"},"notice":"GroundRules: Original legal text. Not legal advice."}