§ 155.770 § 155.770 Draining into bilges. No person may intentionally drain oil or hazardous material from any source into the bilge of a vessel. [CGD 86-034, 55 FR 36255, Sept. 4, 1990]
33 CFR §155.770
33 CFR Part 155
TL;DR
No person may intentionally drain oil or hazardous material from any source into the bilge of a vessel.