Section 157.35 - Ballast added to cargo tanksThe 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-
(a) The vessel encounters abnormally severe weather conditions;(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;(c) The ballast water is processed and discharged in compliance with § 157.37 ; and(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.CGD 77-058b, 45 FR 43708, June 30, 1980, as amended by CGD 82-28, 50 FR 11626, Mar. 22, 1985