America's Cup Act of 2011 - Authorizes vessels operating in preparation for, or in connection with, the 34th America's Cup competition, that have been certified by the Administrator of the Maritime Administration to be eligible vessels, to position competing vessels and transport individuals, equipment, and supplies utilized for the staging, operations, or broadcast of the competition from and around U.S. ports. Deems such an eligibility certification to be conclusive evidence to the Secretary of the Department of Homeland Security (DHS) of the qualification of a vessel to participate in the competition. Subjects to specified penalties any vessel participating in the 34th America's Cup as a competing or supporting vessel that has not received an eligibility certification or that is not in compliance with provisions regarding coastwise endorsement.