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Sharrow Marine

HardwareSt. Clair Shores / Detroit, Michigan, USAFounded 2020· One of 1805 Hardware companies tracked by AMPulse

Manufacturer of patented marine propellers for recreational and commercial boats, using a loop-blade design that reduces tip vortices and cavitation

CEO / Founder
Greg Sharrow
Team Size
11-50
Stage
Growth Stage
Total Funding
$42.62M
Latest Round
Debt
Key Investors
Dolby Family Ventures; McFadden (family office of John H. McFadden)

Technology & Products

Key Products

Sharrow MX Propeller (outboard); Sharrow MX4; Sharrow XO Series (for V8/V10/V12 large outboards); SHARROW by VEEM (inboard propellers up to 5m diameter for superyachts and commercial vessels); Sharrow Agent program

Technological Advantage

Over 125 patents worldwide protecting the loop-blade geometry; proprietary computational tools and testing methodologies; team of world-class aeronautical, nautical, aerospace, and mechanical engineers; partnerships with VEEM for inboard manufacturing and Ford Motor Company for advanced 3D sand-casting production

Differentiation

Value Proposition

The Sharrow Propeller is the first major advancement in propeller technology since the 1830s, using a patented loop-blade design that eliminates or significantly reduces tip cavitation and vortices, delivering up to 30% better fuel efficiency, up to 80% noise reduction, reduced vibration, faster planing, and improved handling.

How They Differentiate

Unlike traditional propeller manufacturers that iterate on the same blade geometry used for nearly 200 years, Sharrow's patented loop-blade design fundamentally eliminates tip vortices — the primary source of noise, vibration, and efficiency loss in propellers. This enables 20-30% fuel savings, 80% noise reduction, and dramatically improved handling that conventional props cannot achieve.

Market & Competition

Target Customers

Recreational boaters, commercial marine operators, superyacht owners, OEM boatbuilders, and defense/aerospace customers

Industry Verticals

Recreational marine, commercial marine, superyacht, defense (autonomous underwater vehicles), aeronautical

Competitors

Mercury Marine (traditional propellers); Michigan Wheel (traditional propellers); Solas Propellers (traditional propellers); PowerTech Propellers

Growth & Milestones

Major Milestones

2020: Sharrow Marine LLC launched; won Miami International Boat Show Innovation Award; 2022: First funding from Dolby Family Ventures; 2023: TIME Best Inventions of 2023; Fast Company Innovation by Design Awards; $30M+ financing completed; VEEM exclusive inboard agreement; 2024: Fast Company World Changing Ideas finalist; CleanTech Transportation Solution of the Year; 2025: Anduril Copperhead AUV partnership; moved HQ to Michigan Central; Ford Motor Company manufacturing partnership

Notable Customers

Anduril Industries (Copperhead AUV program); numerous recreational boat owners (Boston Whaler, Contender, Robalo, Grady White, Jeanneau, etc.); commercial marine operators

https://sharrowmarine.com

Recent coverage of Sharrow Marine

Why this company matters

Sharrow Marine produces patented marine propellers that replace the traditional blade geometry used since the 1830s with a closed-loop design. The loop-blade shape eliminates tip vortices and reduces cavitation, the primary sources of efficiency loss, noise, and vibration in conventional propellers. The result is a step-change in performance: up to 30% better fuel efficiency, up to 80% noise reduction, faster planing, and improved handling across a range of vessel types.

The company's product line includes the Sharrow MX and MX4 for outboard motors, the XO Series for large V8/V10/V12 outboards, and the SHARROW by VEEM line of inboard propellers up to 5 meters in diameter for superyachts and commercial vessels. Manufacturing leverages a partnership with Ford Motor Company for advanced 3D sand-casting, a process that enables the complex loop-blade geometry at production scale. Over 125 patents worldwide protect the design.

Sharrow serves recreational boaters, commercial marine operators, superyacht owners, and OEM boatbuilders. Notable customers include Anduril Industries, which selected Sharrow propellers for its Copperhead autonomous underwater vehicle program. The company also supplies propellers for boats from Boston Whaler, Contender, and Grady White. Competitors such as Mercury Marine, Yamaha, Michigan Wheel, and Solas offer incremental improvements on traditional blade forms, leaving Sharrow's fundamental geometry as a distinct alternative.

The company's strategic moat rests on its patent portfolio and the manufacturing complexity of the loop-blade shape, which is difficult to replicate with conventional casting or machining. The partnership with VEEM extends the design into the inboard and superyacht segments, while the Anduril relationship opens defense and autonomous vehicle applications. The key open question is whether Sharrow can scale production to match the pricing and availability of incumbent propeller lines, particularly for the mass recreational market.