{"data":{"id":"us/46-cfr-32.56-21","jurisdiction":"us","citation":"46 CFR 32.56-21","heading":"-21 Openings in exterior boundaries: Accommodation, service, and control spaces—T/ALL.","body":"The following exterior boundaries of accommodation, service, and control spaces, except wheelhouses, must have no openings, and portlights must be of a fixed type with easily operable steel covers on the inside:\n(a) The exterior boundaries that face the cargo area.\n(b) The portion of the exterior boundaries within 3 meters (10 feet) or the length of the vessel divided by 25, whichever is greater, except that the distance need not exceed 5 meters (16.4 feet), of these boundaries.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER D—TANK VESSELS","PART 32—SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS","Subpart 32.56—Structural Fire Protection for Tank Ships With a Keel Laying Date On or After January 1, 1975"],"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":"84c0aeb6519a11430eee6b0ee688469736ed63d8234df4d3476452652e5d21d2","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-32.56-20","next":"us/46-cfr-32.56-22"},"notice":"GroundRules: Original legal text. Not legal advice."}