{"data":{"id":"us/46-cfr-153.353","jurisdiction":"us","citation":"46 CFR 153.353","heading":"High velocity vents.","body":"The discharge point of a B/3 or 4m venting system must be located at least 3m (approx. 10 ft) above the weatherdeck or walkway if:\n(a) The discharge is a vertical, unimpeded jet;\n(b) The jet has a minimum exit velocity of 30 m/sec (approx. 98.4 ft/sec); and\n(c) The high velocity vent has been approved by Commandant (CG-ENG).","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES","PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS","Subpart B—Design and Equipment"],"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":"89ccaed79c481af9987075d48d7b239cc5bfae56fbd3957d997670bc2fd81c05","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-153.352","next":"us/46-cfr-153.354"},"notice":"GroundRules: Original legal text. Not legal advice."}