{"data":{"id":"us/33-cfr-157.35","jurisdiction":"us","citation":"33 CFR 157.35","heading":"Ballast added to cargo tanks.","body":"The master of a tank vessel with segregated ballast tanks or dedicated clean ballast tanks under § 157.09, § 157.10, § 157.10a(a)(1), § 157.10a(b), § 157.10a(c), § 157.10b(a), § 157.10c(b)(1), or § 157.10c(c) shall ensure that ballast water is carried in a cargo tank only if—\n(a) The vessel encounters abnormally severe weather conditions;\n(b) More ballast water than can be carried in segregated ballast tanks or dedicated clean ballast tanks is necessary for the safety of the vessel;\n(c) The ballast water is processed and discharged in compliance with § 157.37; and\n(d) On a new vessel under § 157.10 that carries crude oil, the ballast water is only carried in a cargo tank that is crude oil washed in accordance with Subpart D of this part during or after the most recent discharge of crude oil from that tank.","path":["Title 33—Navigation and Navigable Waters","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—POLLUTION","PART 157—RULES FOR THE PROTECTION OF THE MARINE ENVIRONMENT RELATING TO TANK VESSELS CARRYING OIL IN BULK","Subpart C—Vessel Operation"],"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":"987f13812bc9ebf791c90d441eac48b272a658b591f0cb65fae2d6a4627cfa41","source_id":"us-cfr","stale":true,"prev":"us/33-cfr-157.33","next":"us/33-cfr-157.37"},"notice":"GroundRules: Original legal text. Not legal advice."}