{"data":{"id":"us/46-cfr-171.072","jurisdiction":"us","citation":"46 CFR 171.072","heading":"Calculation of permeability for Type II subdivision.","body":"When doing calculations to show compliance with § 171.070, the following uniform average permeabilities must be assumed:\n(a) 85 percent in the machinery space.\n(b) 60 percent in the following spaces:\n(1) Tanks that are normally filled when the vessel is in the full load condition.\n(2) Chain lockers.\n(3) Cargo spaces.\n(4) Stores spaces.\n(5) Mail or baggage spaces.\n(c) 95 percent in all other spaces.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER S—SUBDIVISION AND STABILITY","PART 171—SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS","Subpart C—Subdivision and Damage Stability"],"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":"9991831c50698fc121a6b82b87c487a0a5f39b15145664dbcf2fcd4e148e9c7a","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-171.070","next":"us/46-cfr-171.073"},"notice":"GroundRules: Original legal text. Not legal advice."}