; and (B) to encourage the participation of international research centers and companies within the United States and the participation of United States research centers and companies in international projects; (11) to identify, in conjunction with the Secretary of Commerce and other relevant Federal agencies, the potential environmental impacts, including potential impacts on fisheries and other marine resources, of marine and hydrokinetic renewable energy technologies, measures to prevent adverse impacts, and technologies and other means available for monitoring and determining environmental impacts; and (12) to identify, in conjunction with the Commandant of the United States Coast Guard and other relevant Federal agencies, the potential navigational impacts of marine and hydrokinetic renewable energy technologies and measures to prevent adverse impacts on navigation. . 4. National Marine Renewable Energy Research, Development, and Demonstration Centers Section 634 of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17213 ) is amended by striking subsection (b) and inserting the following: (b) Purposes The Centers (including each Center that has been established as of the date of enactment of the Marine Energy Act ), in coordination with the Department and the National Laboratories, shall— (1) advance research, development, demonstration, and commercial application of marine and hydrokinetic renewable energy technologies; (2) support in-water testing and demonstration of marine and hydrokinetic renewable energy technologies, including facilities capable of testing— (A) marine and hydrokinetic renewable energy systems of various technology readiness levels and scales; (B) a variety of technologies in multiple test berths at a single location; and (C) arrays of technology devices