Ford Helps Sharrow Cut Propeller Build Time to Weeks

Imagine cutting your boat's fuel costs by almost a third while cruising faster and quieter. That's exactly what Sharrow Marine's twisted loop propellers deliver, but until now, customers faced agonizing waits to get their hands on them.

Greg Sharrow knew he had something special when he reinvented the boat propeller by twisting traditional blades into efficient loops. The problem wasn't demand. Boaters loved the fuel savings and performance boost. The problem was getting these intricate propellers out of the factory fast enough.

Enter Ford Motor Company with a solution that shows what happens when automotive giants share their expertise with small innovators. Over nine months, Ford's manufacturing experts worked alongside Sharrow's team to adapt advanced 3D sand casting technology originally developed for car parts to build marine propellers at scale.

The breakthrough solves a manufacturing puzzle that's plagued Sharrow since launching. Traditional investment casting required creating individual ceramic molds that had to be broken apart to retrieve each finished propeller. Every single unit demanded this time-intensive, expensive process from scratch.

Ford's sand casting method flips that equation. The technique uses specially treated sand molds that form much faster and cost significantly less, while still achieving the precision these intricately looped propellers demand. Getting sand casting to match the quality of investment casting for such complex shapes required months of refinement with metallurgy and foundry partners.

The timing couldn't be better. Sharrow moved its headquarters to Detroit's Michigan Central complex in 2025, a 30-acre innovation hub Ford created around the historic Michigan Central Station. The move put Sharrow right in the middle of world-class manufacturing expertise and collaborative networks.

"What used to take an entire boating season to produce can now be made in just a few weeks," Greg Sharrow announced this week. That's not incremental improvement. That's transformation.

The company has already been working to make these efficiency-boosting propellers more accessible, dropping prices from over $5,000 at launch to a current starting price of just $795. Now they can actually deliver on that promise without months-long waits.

The Ripple Effect

This partnership shows how established companies can accelerate breakthrough technologies without acquiring or controlling them. Ford gains nothing directly from faster propeller production, but everything from fostering innovation in their backyard.

For boaters, faster production means shorter wait times for propellers that genuinely reduce fuel consumption and emissions. For the marine industry, it proves that revolutionary designs can scale beyond boutique manufacturing. And for other inventors struggling with production bottlenecks, it demonstrates the power of tapping into automotive manufacturing expertise.

The queues of backed-up customers waiting for their Sharrow propellers are about to get a lot shorter.