This reads a lot like an advertisement.
The linked page [Cyclorotor] is more neutral and has more information on the design and applications outside of marine vessels.
The coolest recent development in marine propellers is toroidal propellers which are now commercially available and seem to perform significantly better than standard propellers: https://www.sharrowmarine.com/
yccs27•49m ago
[Cyclorotor] https://en.wikipedia.org/wiki/Cyclorotor