Arc Boats raises $50M Series C to electrify marine industry, eyes tugboats and defense after hitting $40M run rate

Summary

Arc Boats is building electric powertrains for the marine industry, with a thesis that boats will follow the same path as rail — where diesel-electric and battery-electric systems have largely displaced combustion engines over decades. Mitch Lee, co-founder and CEO, says Arc has now raised $160M in total, including a freshly closed $50M Series C, and is generating a $40M annualized run rate from consumer boat deliveries, with margins expanding month over month.

Consumer product

Arc's current lineup targets recreational lake boating — a speedboat and a wake sport boat for wakeboarding and wake surfing. Lee pitches the electric advantage not mainly on environmental grounds but on product experience: near-silent operation, no fumes, instant torque, and software-defined configuration. A single button adjusts the wake profile for wakeboarding versus wake surfing, and the boat can hold its position in deep water without an anchor, which Lee demonstrates with the example of jumping into Lake Tahoe where anchor depths are impractical. The team also built a remote-control mode as a side project, though Lee concedes it's likely legal in few jurisdictions.

Commercial expansion

The bigger revenue story is tugboats. Arc has signed a $160M deal for ShipAssist electric tugboats, which push and pull cargo ships in port. Lee frames the commercial case purely around operator economics: cutting OpEx by reducing fuel and maintenance costs, keeping a $20M vessel online a greater percentage of the time, and sidestepping EPA compliance burdens that come with conventional bunker-fuel engines. The ShipAssist vessels are designed as hybrid-electric — diesel-electric or hydrogen-electric — so they don't depend on marina charging infrastructure at all.

Charging and infrastructure

Lee argues the charging problem for consumer electric boats is more tractable than for electric cars because marinas are already wired for shore power, and private docks typically run 240V for lifts and lighting. The analogy to EV road-trip range anxiety doesn't apply in the same way when the boat returns to a dock every time.

Defense and longer-term scope

Lee points to nuclear-electric aircraft carriers as proof that electric propulsion already operates at the high end of naval defense — the power source varies, but the drive system is electric. Arc is positioning its platform for defense applications alongside commercial shipping, though specifics beyond the tugboat deal aren't disclosed.

Jet skis are off the roadmap for now. Lee calls them a low-margin product category where getting battery cost down to competitive price points is a hard problem, similar to why electric motorcycles haven't gone mainstream.

Arc is running consumer deliveries, a nine-figure commercial contract, and a defense angle simultaneously off a platform originally hardened in the recreational market. The $40M run rate is entirely consumer-side today; how quickly the ShipAssist contract converts to recognized revenue will be the number to watch.