46 CFR §111.33-11

Each power semiconductor converter system in a propulsion system must meet sections 4-8-5/5.17.8 and 4-8-5/5.17.9 of ABS Marine Vessel Rules (incorporated by reference; see § 110.10-1 of this subchapter), except that each one for mobile offshore drilling units must meet the requirements in section 6-1-7/12 of ABS MOU Rules (incorporated by reference; see § 110.10-1 of this subchapter).