This part prescribes regulations implementing the provisions of Subtitle C, Maritime Security Fleet Program, Title XXXV of the National Defense Authorization Act for Fiscal Year 2004, the Maritime Security Act of 2003 (MSA 2003), governing Maritime Security Program (MSP) payments for vessels operating in the foreign trade or mixed foreign and domestic commerce of the United States allowed under a registry endorsement issued under 46 U.S.C. 12105. The MSA 2003 provides for joint responsibility between the Department of Defense (DOD) and the Department of Transportation (DOT) for administering the law. These regulations provide the framework for the coordination between DOD and DOT in implementing the MSA 2003. Implementation of the MSA 2003 has been delegated by the Secretary of Transportation to the Maritime Administrator, U.S. Maritime Administration and by the Secretary of Defense to the Commander, U.S. Transportation Command, respectively.