A Tech Startup Is Now Building America's Submarines: Inside Anduril's $3.7 Billion Arsenal-2 Shipyard

Submarines are the most complex machines America builds — and for decades, exactly two shipyards could build them. Now a Silicon Valley-style tech startup is joining the club. On October 6, 2026, Anduril Industries announced it will invest $3.7 billion of its own money to build Arsenal-2, a giant "software-defined" shipyard in Maryland dedicated to submarine components — backed by a US Navy contract worth up to $2.9 billion to supply parts for the Virginia-class attack submarine fleet. Combined, it is a $6.6 billion bet that the future of shipbuilding looks less like a shipyard and more like a tech company.

Concept illustration.

The Deal at a Glance

• $3.7 billion private investment by Anduril to build Arsenal-2
• Up to $2.9 billion Navy contract to manufacture submarine components — with payments tied directly to demonstrated production output, and Anduril carrying most of the execution risk
• Location: Sparrows Point, at the Tradepoint Atlantic complex in Baltimore County, Maryland
• Scale: 187 acres, more than 2 million square feet of production space, high-bay assembly halls and a 1,200-foot graving dock
• Jobs: about 3,100 direct jobs and more than 11,000 indirect jobs
• Timeline: initial operations expected around 2030
• Customers: finished components and large assemblies ship to General Dynamics Electric Boat in Connecticut and HII's Newport News Shipbuilding in Virginia for final assembly

One striking detail announced at the launch event: US taxpayers will receive a 40 percent stake in the new shipyard — specifically in the Anduril subsidiary created to operate it, not in Anduril itself. Anduril was clear about its lane: it will not build complete submarines. Its goal is to become a large and growing part of the supply chain that feeds the two prime builders.

Why the Navy Needs Help Building Submarines

The Virginia-class is the Navy's frontline nuclear-powered attack submarine — fast (over 25 knots), quiet, and tasked with hunting enemy submarines, striking land targets, and gathering intelligence. The Navy needs them built at a pace of more than two per year to sustain the fleet and meet commitments to allies under AUKUS. The existing industrial base has consistently fallen short of that rate, leaving a growing backlog of ordered boats and yards stretched past capacity.

Navy submarine leadership has said publicly that the workload now exceeds what the two prime shipyards can do. The strategy is to let Electric Boat and Newport News concentrate on the work only they can perform — final assembly, outfitting, integration, and testing — while shifting everything else, built as modules, to new suppliers. Arsenal-2 is the biggest execution of that strategy yet. Anduril is already producing critical Virginia-class components such as torpedo tubes at a facility in California, and plans to grow into larger modules and hull sections once Baltimore is running.

Concept illustration.

Building Submarines Like a Tech Company

Arsenal-2's name is the tell. It follows Anduril's first Arsenal factory — built for autonomous systems and munitions — and applies the same playbook to the heaviest industry in America. The yard will run on ArsenalOS, Anduril's industrial software platform, which connects fabrication, assembly, material movement, inspections, and documentation across reconfigurable production lines. In plain terms: where a traditional shipyard coordinates decades-old processes on paper and tribal knowledge, Arsenal-2 is designed to be run, measured, and improved like a software product.

The contract structure is equally untraditional. Instead of the government paying for effort, the Navy pays for results — components actually produced — while Anduril fronts the $3.7 billion capital and absorbs most of the risk if the yard underperforms. As the company's strategy chief put it, the government is buying the results of what the facility produces. It is the defense-tech model — private capital, speed, accountability for output — applied to a sector that has resisted it for a century.

Why This Matters

Sea power is decided in factories long before it is decided in oceans. China's shipbuilding capacity dwarfs America's, and the submarine fleet is the US Navy's most survivable deterrent — the "apex predators" of the ocean, as Navy leadership calls them. Every month of production delay compounds. If Arsenal-2 works, it proves a second model for heavy defense manufacturing and adds parallel capacity the submarine force desperately needs. If a startup can learn to build to nuclear-submarine standards on a startup's clock, the implications reach far beyond one yard in Baltimore — to every overloaded arsenal and shipyard in the country.

The risk is equally clear: submarine components are unforgiving, tolerances are brutal, and 2030 is a long way off for a fleet that is short of boats today. Execution, not announcements, will decide this story.

Frequently Asked Questions

Will Anduril build complete submarines?

No. Anduril will manufacture critical components and large-scale assemblies — starting with items like torpedo tubes and growing into modules and hull sections — and deliver them to Electric Boat and Newport News Shipbuilding, which remain the prime builders performing final assembly.

How is the $6.6 billion split?

Anduril is investing $3.7 billion of private capital to build Arsenal-2. The Navy contract is worth up to $2.9 billion, with payments tied to demonstrated production outcomes rather than effort.

When will Arsenal-2 start producing?

Initial operations are expected around 2030, with output ramping as hiring, suppliers, and production lines mature. Anduril is already making some Virginia-class components, including torpedo tubes, at a facility in California.

Our Take

This is the boldest test yet of the defense-tech thesis. Anduril made its name on autonomous aircraft and smart sensors — products where software speed wins. A graving dock in Baltimore is a different universe: steel, welds, and nuclear-grade quality control. But the Navy is not buying a press release; it structured the deal to pay for output and let private money carry the risk. If Arsenal-2 delivers parts on time, "shipyard" will never mean quite the same thing again.

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