Prior to receiving authorization to participate in the ACP, a recognized classification society must prepare, and receive Commandant (CG-ENG) approval of, a U.S. supplement to the recognized classification society's class rules. This supplement must include all regulations applicable for issuance of a Certificate of Inspection (COI) which are not, in the opinion of the Commandant, adequately established by either the class rules of that classification society or applicable international regulations.
46 C.F.R. §8.430