Purpose of subchapter.

This subchapter prescribes rules for the design, construction, equipment, inspection and operation of mobile offshore drilling units operating under the U.S. flag. The regulations in this subchapter (parts 107 through 109) have preemptive effect over State or local regulation within the same fields. [USCG-2012-0196, 81 FR 48265, July 22, 2016]