"The Liberty Lifter seaplane should be able to carry at least two U.S. Marine Corps Amphibious Combat Vehicles"

 via MilitaryAerospace.com

The Liberty Lifter seaplane should be able to take off and land in waves from four to eight feet high; fly in ground effect above waves from 8 to 13 feet high; fly at altitudes from ground effect to 10,000 feet, and operate for four to six weeks at a time carrying payloads of at least 90 tons.

On-water amphibious payload deployment and retrieval should be via nose and tail ramps; the seaplane should be able to carry at least two U.S. Marine Corps Amphibious Combat Vehicles, and cargo in 20-foot container units.

Here

Now this is DARPA HARD!  I wonder if they just throw shit at the wall or if they actually think they can achieve some of this stuff?