List of U.S. flagged cruise ships

List of current U.S. flagged cruise ships and river boats in the United States. Due to the Passenger Vessel Services Act of 1886, these are the only overnight passenger ships currently eligible to sail solely between U.S. ports without the need for a foreign port stopover.
Ships eligible to sail under American flag.
Passenger ships that are U.S. built, that once sailed under the American flag, and would be eligible to return to that status: