WhalePower is taking the "whale fin" based propeller blade designs and working to commercialize the technology. Sounds like nobody is looking at marine propellers (yet), but maybe???
I think, assuming the tests really pan out, that a marine application would be a good fit. Marine propellers have lots of problems with cavitation, stalling, etc. depending on the speed range and power application. Anything that could make that more efficient would be good.
Add in electric/hybrid power as I’m considering, and a propeller that can make efficient use of power becomes even more important. Electric power’s slow speed/high torque requires a different propeller design than the norm. Would this be a good fit?