Loopy High-Efficiency Propellers Accelerate Into Production Expansion
1st August 2025
As we’ve looked at in the past, Sharrow has completely reimagined the marine propeller, swapping the usual thin-edged blades with a set of closed loops designed to cut efficiency-sapping tip vortices down to virtually nil. With smoother, more effective hydrodynamics, the propellers are claimed to offer up to 30% better fuel efficiency than a traditional propeller while also cutting noise and vibration.
Sharrow has developed several different propeller models, including the mesmerizing CX stacked contra-rotator and the more mass-market-friendly MX-A small outboard propeller. The latter took a big step at addressing one of Sharrow’s biggest drawbacks: uninvitingly high prices. It starts at US$1,995, which is still a far cry from inexpensive but is a solid step down from the $4,995 to $11,995 range of other variants.
Beyond propellers, Sharrow is looking toward its next chapter with Sharrow Labs. Based in Michigan Central’s Newlab innovation and mobility hub, Sharrow Labs is focused on pioneering new technologies and innovations in propulsion, clean energy and next-generation mobility. It will also look to expand Sharrow’s footprint into new industries, including aerospace, wind energy and defense.
Everybody who runs a boat has been waiting impatiently for these people to get off the dime and produce products for them to use. YouTube has videos of the props in action; it’s pretty exciting.