{"data":{"id":"us/33-cfr-117.21","jurisdiction":"us","citation":"33 CFR 117.21","heading":"Signalling for an opened drawbridge.","body":"When a vessel approaches a drawbridge with the draw in the open position, the vessel shall give the opening signal. If no acknowledgment is received within 30 seconds, the vessel may proceed, with caution, through the open draw.","path":["Title 33—Navigation and Navigable Waters","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER J—BRIDGES","PART 117—DRAWBRIDGE OPERATION REGULATIONS","Subpart A—General Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-33.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:35Z","sha256":"fb9ba62145f4f849711c9779f06f2b9bdabb324a74337848e2524511d2e855e7","source_id":"us-cfr","stale":true,"prev":"us/33-cfr-117.19","next":"us/33-cfr-117.23"},"notice":"GroundRules: Original legal text. Not legal advice."}