CFR › Title 33 › Part 155 › §155.401533 CFR §155.4015Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkYou must follow this subpart if your vessel carries group I-IV oils, and is required by § 155.1015 or § 155.5015 to have a vessel response plan.