{"data":{"id":"us/46-cfr-197.312","jurisdiction":"us","citation":"46 CFR 197.312","heading":"Breathing supply hoses.","body":"(a) Each breathing supply hose must—\n(1) Have a maximum working pressure that is equal to or exceeds—\n(i) The maximum working pressure of the section of the breathing supply system in which used; and\n(ii) The pressure equivalent of the maximum depth of the dive relative to the supply source plus 100 psig;\n(2) Have a bursting pressure of four times its maximum working pressure;\n(3) Have connectors that—\n(i) Are made of corrosion-resistant material;\n(ii) Are resistant to accidental disengagement; and\n(iii) Have a maximum working pressure that is at least equal to the maximum working pressure of the hose to which they are attached; and\n(4) Resist kinking by—\n(i) Being made of kink-resistant materials; or\n(ii) Having exterior support.\n(b) Each umbilical must—\n(1) Meet the requirements of paragraph (a) of this section; and\n(2) Be marked from the diver or open bell end in 10-foot intervals to 100 feet and in 50-foot intervals thereafter.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER V—MARINE OCCUPATIONAL SAFETY AND HEALTH STANDARDS","PART 197—GENERAL PROVISIONS","Subpart B—Commercial Diving Operations"],"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":"f24419646e3e7d7bbfb7f7700a909d413430aedadbc486186dd2f8ba6c63d627","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-197.310","next":"us/46-cfr-197.314"},"notice":"GroundRules: Original legal text. Not legal advice."}