Radical New Propeller Design... Sharrow?

Here's a nice pic of the Viking 64 SF that Veem uses for product development in Australia:

Like most things, innovation tends to come from the outside of the main industry.

In this case, the key technology was derived from trying to quiet all those noisy drones which spun up their blade tip velocities to that typical shrieking level.

By addressing the propeller blade tip geometry in order to reduce the shedding along the tip vortices, they have found the magic formula.

I don't see the image or a link.
Glad to see you back here @PacBlue

I don't see the image, either. All I see is:

Looks like they're using a Ring Fedder to hold it on the shaft. Corrosion could make for a difficult removal if that's the case. That's a keyless fit and it works really well in the industry and never slips under tons of torque but you have to loosen lots of bolts to remove it.

While I can sympathize with the cost of the props, shafts and any re-engineering, in relationship with the costs of current add-ons in the SF world, it really doesn't seem like much:

360 degree Omni sonar over $100K, Cockpit/Mezzanine/Fybridge AC, etc. ,

For my tastes, $$$ spent on propulsion are the best investment as they work for you on every single rpm, that's a good ROI for a powerboater.

Sorry about the missing picture, if you search for Veem Sharrow 64 Viking SF you will find images of the propeller installation.

More write ups:
https://boattest.com/article/sharrow-veem-props-inboard-yachts-begin-production

Tested on Neptunus motoryacht:
https://boattest.com/article/sharrow-props-tested-motoryacht

This is the pic PacBlue was referencing for the 64 Viking SF on Boat Test. Not to detract from Sharrow, but the reviews on Boat Test are PAID reviews.

Ring Fedders are keyless on a straight shaft. They rely 100% on friction to lock in place and they work really well. I'm not at all familiar with Sharrow propellers but the picture PacBlue posted shows a ring of bolts identical to a Ring Fedder. They add quite a bit of weight to the application which would concern me being that far aft of the strut.