Arc Boat Company Raises $50M to Electrify Commercial and Defense Vessels
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Arc Boat Company Raises $50 Million to Electrify Commercial and Defense Vessels

The electric boat startup will use the Series C funding to scale its electric powertrain technology.

3/20/2026
Ghita Khalfaoui
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Los Angeles-based Arc Boat Company has successfully closed a $50 million Series C funding round to fuel its expansion into commercial and defense markets. The investment, led by Eclipse with participation from a16z and Menlo Ventures, will accelerate the production of Arc's electric powertrains for various marine vessels. This strategic move aims to solidify the company's mission to electrify all watercraft while maintaining its successful consumer boat business.


A Strategic Expansion into New Markets

Arc's decision to enter the commercial and defense sectors was accelerated by strong organic interest from industry players. Founder Mitch Lee envisions an all-electric marine industry, drawing parallels to the widespread adoption of electric lawn equipment. This expansion builds upon the success of its consumer sport boats, which serve as a crucial proof point for the technology's capability and durability.

Custom Solutions for Commercial Vessels

The company plans a collaborative approach for its commercial ventures rather than building entire boats independently. For instance, Arc is designing hybrid-electric tugboats for Curtin Maritime, with construction handled in conjunction with a shipyard partner. This model allows Arc to focus on its core competency of electric propulsion while meeting the specific needs of commercial clients like port operators.

Powering the Future of Naval Defense

In the defense arena, Arc intends to operate as a direct supplier of advanced electric propulsion systems to prime and neo-prime contractors. Lee identified a significant unmet need for reliable electric powertrains within the defense industry. This focus positions Arc as a key technology provider for the next generation of naval vessels, capitalizing on a specialized and demanding market.

The push towards electric systems in defense is closely linked to the development of autonomous watercraft. These unmanned vessels require a substantial improvement in reliability and uptime, as they operate without an onboard crew for maintenance. Arc's electric powertrains provide the necessary dependability, enabling reduced signatures and increased autonomy for critical naval operations.

The Rationale Behind Marine Electrification

The transition to electric power is driven by distinct factors across different sectors. For commercial operators, the appeal lies in the decreasing cost of electric technology and the rising expense of combustion engines due to stricter compliance regulations. In contrast, the defense sector prioritizes the enhanced reliability and endurance that electric systems offer for increasingly autonomous fleets.

This strategy mirrors the playbook of successful tech giants like Tesla, a point noted by Eclipse partner Greg Reichow. The approach involves perfecting the technology in the high-end consumer market before scaling it for commercial applications with proven economics and reliability. This methodical progression has validated Arc's business model and attracted significant investor confidence for its next phase of growth.

Investor Confidence and Company Growth

Investors have expressed strong confidence in Arc's ability to lead the U.S. electric maritime market. Shawn Carolan of Menlo Ventures highlighted the company's proven track record, world-class team, and superior technology as key advantages. This new capital injection is seen as a catalyst that will help Arc meet the accelerating demand for its advanced electric powertrains.

With the new funding, Arc plans to expand its team of approximately 200 employees, particularly in production, engineering, and commercial go-to-market roles. This growth is essential to support its expanding operations and fulfill major contracts, such as its $160 million deal with Curtin Maritime. The company's ability to develop and iterate on technology quickly is considered its key competitive advantage for long-term success.


Arc's $50 million funding round marks a pivotal moment, enabling a strategic diversification into the demanding commercial and defense maritime industries. By balancing its lucrative consumer business with the defensibility of long-term commercial contracts, the company is building a stable and predictable enterprise. This dual-market approach positions Arc to become a dominant force in the broader electrification of the entire marine industry.