There is a certain satisfaction in watching an industry swear it is untouchable right before someone quietly rewires the whole thing. Flux Marine has been doing exactly that from its 40,000 sq ft HQ in Bristol, Rhode Island, where Ben Sorkin, Daylin Frantin, and Jon Lord turned a Princeton research obsession into the high-voltage outboard platform that has boat builders, rental fleets, and even superyacht crews rethinking what power on the water should feel like. Their latest move is a 15M funding round announced 11.19.25, led by Collide Capital with existing investors and customers stepping back in, pushing total funding past 30M since 2020. Not bad for a company that started with Lake George memories, an abandoned business degree, and an engineering team that treats motors the way a jazz trio treats improvisation, tight, technical, and absolutely intentional.
The magic is in the clean-sheet design. The FM115 pushes 115 hp sustained and 150 hp peak, sending a Highfield 660 RIB from 0 to 30 mph in 8.1 seconds and onto plane in 3 to 4. A Scout 215 Dorado hits 32 mph with enough ease to make old-school outboards feel like analog relics. Range sits at 30 to 40 miles on plane and 80 to 100 miles at trolling speeds, all powered by an 84 kWh modular battery system built around three 28 kWh packs running at 400 volts. None of this is borrowed tech. Flux Marine built its own power electronics, BMS, cooling, and telematics, then stacked it with a brushless DC motor and proprietary hall sensor configuration that gives instant torque without the drama.
Durability is where the numbers get borderline disrespectful. The FM115 logged 1,300 hours at wide-open throttle in a test tank with zero maintenance issues, which is the marine equivalent of running a marathon every day until the neighbors stop asking questions. A 2-year customer validation program hammered these motors across oyster farm boats in Maine, lake rental fleets across North America, twin-outboard superyacht tenders in the British Virgin Islands, and recreational boats stacking 80+ nautical mile days. No winterization, no post-saltwater flushing, closed-loop glycol cooling, and remote diagnostics through a telematics platform pinging home every 10 to 15 seconds. Even Garmin screens get smart, offering real-time efficiency insights that turn captains into data-driven operators whether they meant to be or not.
Zoom out and the strategic picture is even stronger. Flux Marine has delivered more high-voltage electric outboards than any other manufacturer in North America over the last 18 months, while partnerships with Scout Boats, Highfield Boats, Flagship Pontoons, Hyfoil, and Zodiac move the brand from startup novelty into production-line normalcy. Highfield integrated the FM115 into its rigging schedule. Scout added Flux-powered models to its lineup. Island Boat Rental Nantucket put paying customers behind their throttles. This is what product-market fit looks like when you let saltwater, not slide decks, cast the final vote.
The 15M round accelerates what is already a disciplined roadmap. Scale throughput at the Bristol facility. Grow from the East Greenwich office. Keep the focus on the FM115 while higher-horsepower variants sit quietly in development. Expand dual-use applications in uncrewed maritime and aerospace. Convert partnerships into volume. Chip away at the 800,000 outboards sold globally each year.
Startups Startup Funding Venture Capital Marine Marine Tech EV Electric Boats Data Data Driven Technology Innovation Tech Ecosystem Startup Ecosystem Hiring Tech Hiring
