; and (4) by adding at the end of the section the following: (g) Independent investigation of transportation accidents (1) In general At the request of the Secretary of the department in which the Coast Guard is operating or the Secretary, the National Transportation Safety Board may conduct an independent investigation of any accident, occurring in the outer Continental Shelf and involving activities under this Act, that does not otherwise fall within the definition of an accident or major marine casualty (as those terms are used in chapter 11 of title 49, United States Code). (2) Transportation accident For purposes of an investigation under this subsection, an accident that is the subject of a request under paragraph (1) shall be treated as a transportation accident (as that term is used in chapter 11 of title 49, United States Code). (h) Information on causes and corrective actions (1) In general For each accident investigated under this section, the Secretary of the department in which the Coast Guard is operating and the Secretary shall promptly make available to the public technical information about the causes of the accident and corrective actions taken. (2) Public database All data and reports related to an accident described in paragraph (1) shall be maintained in a database that is freely available to the public. (i) Inspection fees (1) In general To the extent necessary to fund the carrying out of inspections and other duties under this Act of the Secretary of the department in which the Coast Guard is operating and the Secretary of Commerce, upon the request of the Secretary of the department in which the Coast Guard is operating and the Secretary of Commerce, the Secretary shall collect a non-refundable inspection fee, which shall be deposited in the Ocean Commerce, Transportation, and Navigation Enforcement Fund established under paragraph (3), from the designated operator for facilities subject to inspection under subsection (c). (2) Establishment The Secretary shall establish, by rule,