How the US Navy embraced AM in 2025
Moving beyond testing and into the Navy’s active supply chain, directly strengthening fleet readiness and logistics resilience
According to the US Navy, in 2025, additive manufacturing shifted from a promising capability to an operational warfighting tool. Lead times were cut by up to 70%, and strategic collaboration with AUKUS allies accelerated the creation of a distributed manufacturing network.
Through coordinated efforts across Naval Sea Systems Command (NAVSEA), the Maritime Industrial Base (MIB), and private industry, AM moved beyond testing and into the Navy’s active supply chain, directly strengthening fleet readiness and logistics resilience.
AM achieved major platform-level breakthroughs. Huntington Ingalls Industries installed the Navy’s first additively manufactured 1.5-meter, 450-kilogram metal valve manifold aboard a nuclear-powered aircraft carrier, demonstrating viability for large, mission-critical surface combatant components. Shortly after, the Virginia-class submarine program installed a metal 3D printed component qualified for deep-sea operations, marking a major validation of AM for the subsurface domain.
AM expansion extended beyond the US Navy through the AUKUS partnership. In 2025, the US, UK, and Australia completed a successful shipboard installation of a metal AM part, reinforcing allied interoperability and interchangeable repair capabilities.
Operational gains were immediate. Marotta used metal AM to cut a critical destroyer valve lead time by 70%, bypassing conventional manufacturing bottlenecks. At the waterfront, the Southeast Regional Maintenance Center (SERMC) produced a single polymer AM component that generated over $300,000 in cost avoidance and accelerated ship return to service.
The Navy also partnered with the United States Coast Guard to complete a cross-service repair using a polymer 3D printer installed on an in-service submarine, rapidly closing a logistics gap. Forward-deployed teams at FDRMC Rota reduced repair times by 80% using AM-fabricated parts.
NAVSEA collaborations with academia and industry reduced material testing requirements by over 60%, saving millions in qualification costs. Three additive material specifications – MIL-PRF-32802, MIL-PRF-32803, and MIL-PRF-32804 – were released, with additional specifications in development. Partners such as Hunt Valve continue certifying new AM components, steadily expanding fleet-ready inventories.
By the end of 2025, additive manufacturing was fully embedded as a readiness enabler across naval planning, maintenance, and sustainment.
