The research is part of a National Science Foundation-funded project to build the world's first free-floating submerged wave energy converter. In a series of experiments, the system was able to convert 95 percent of an incoming wave's energy into mechanical energy, driving the shaft. The rest of the energy was lost to harmonic waves. But after some tweaks, the Air Force team, led by Dr. Stefan Siegel, was able to improve the energy conversion rate to 99 percent. The work was performed in a small tank, a 1:1300 scale version of the system's size in the ocean.