StacksVerified U.S. regulatory reference

33 CFR §157.35

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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—
  1. (a)The vessel encounters abnormally severe weather conditions;
  2. (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;
  3. (c)The ballast water is processed and discharged in compliance with § 157.37; and
  4. (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.