Arc Boat Company raises $50 million for commercial and defense

Los Angeles-based Arc Boat Company has raised $50 million in a Series C funding round—a late-stage funding round for a startup—to scale its electric propulsion technology beyond consumer watercraft and into the commercial and defense sectors, in an effort to fulfill Lee’s goal of transitioning all marine vessels to electric power. The funding round was led by Eclipse, a venture capital firm, with participation from investors including a16z, Menlo Ventures, Lowercarbon Capital, Necessary Ventures, and Offline Ventures.

The company’s expansion strategy is similar to the early approach of electric vehicle maker Tesla. Arc plans to use its consumer sport boat business to prove the capability and durability of its technology before scaling into commercial applications. According to founder Mitch Lee, the consumer business already generates meaningful revenue. Greg Reichow, a former vice president at Tesla and a general partner at Eclipse, supported this trajectory. Reichow stated that the correct strategy was to develop the technology, get it to work on high-end consumer boats, and then apply that experienced technology to the commercial sector once the economics and reliability are proven.

Arc is targeting these new markets due to shifting cost dynamics. Lee believes the entire marine industry will eventually transition to electric power, drawing a comparison to the electrification of lawn equipment due to the superior user experience. He noted that the pull into the commercial sector is driven by falling costs for electric systems and rising costs for traditional combustion engines, which he described as cancer-spewing machines due to increasing compliance burdens. For commercial applications, Arc will likely take a design-and-build approach, similar to its hybrid tugboat project that debuted last year in partnership with shipyard Snow & Co. and customer Curtin Maritime. For the defense sector, Lee plans to act as a direct supplier of propulsion systems to primes and neo-primes—the primary contractors in the defense industry—citing a significant unmet need for electric powertrains.

The company, which employs many former SpaceX, Tesla, and Rivian workers, has grown to around 200 people. Lee expects to add more staff to its production, engineering, and go-to-market teams following the fundraise. Reichow highlighted the startup’s rapid execution as its primary competitive advantage. “I’ve not yet met a company that has been able to move as quickly as Arc does in terms of develop something, whether it be a technology or product, do it very quickly, do it very efficiently, and then get fast cycles of learning on it,” Reichow said.

Why it matters

By leveraging its consumer boat technology to enter the commercial and defense sectors, Arc is diversifying its business model. This dual approach aims to balance the immediate cash-flow benefits of consumer sales with the long-term defensibility of commercial and defense contracts.