; effectiveness (1) In general Not later than 2 years after the date of the enactment of this Act, the Commandant shall commission an assessment of the effectiveness of the Coast Guard’s oversight of recognized organizations and its impact on compliance by and safety of vessels inspected by such organizations. (2) Experience The assessment commissioned under paragraph (1) shall be conducted by a research organization with significant experience in maritime operations and marine safety. (3) Submission to congress Not later than 180 days after the date that the assessment required under paragraph (1) is completed, the Commandant shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate the results of such assessment. 13. Flag-State guidance and supplements (a) Freight vessels; damage control information Within 1 year after the date of the enactment of this Act, the Secretary shall issue flag-State guidance for all freight vessels documented under chapter 121 of title 46, United States Code, built before January 1, 1992, regarding the inclusion of comprehensive damage control information in safety management plans required under chapter 32 of title 46, United States Code. (b) Recognized organizations; United States supplement The Commandant shall— (1) work with recognized organizations to create a single United States Supplement to rules of such organizations for classification of vessels