; and (2) perform a quality assurance audit of recognized organization representation and performance regarding United States-flagged vessels. 11. Major marine casualty property damage threshold Section 6101(i)(3) of title 46, United States Code, is amended by striking $500,000 and inserting $2,000,000 . 12. Reviews, briefings, and reports (a) Major conversion determinations (1) Review of policies and procedures The Commandant shall conduct a review of policies and procedures for making and documenting major conversion determinations, including an examination of the deference given to precedent. (2) Briefing Not later than 1 year after the date of the enactment of this Act, the Commandant shall provide to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a briefing on the findings of the review required by paragraph (1). (b) Ventilators, openings and stability standards (1) Review Note later than 1 year after the date of the enactment of this Act, the Commandant shall complete a review of the effectiveness of United States regulations, international conventions, recognized organizations’ class rules, and Coast Guard technical policy regarding— (A) ventilators and other hull openings; (B) fire dampers and other closures protecting openings normally open during operations