Section 157.162 - Crude oil washing during a voyageThe master of a tank vessel having a COW system under § 157.10(e) , § 157.10a(a)(2) , or § 157.10c(b)(2) shall ensure that each cargo tank that is crude oil washed during a voyage other than a ballast voyage-
(a) Remains empty so that the tank may be inspected upon arrival at the next discharge port; and(b) If it is to be used as a ballast tank when leaving the discharge port, is ballasted before the vessel departs from that discharge port so that the tank may be inspected under § 157.140(a)(2) .CGD 77-058b, 45 FR 43709, June 30, 1980, as amended by CGD 82-28, 50 FR 11628, Mar. 22, 1985