- The U.S. Navy integrated 3D-printed metal and polymer parts into fleet operations in 2025, cutting lead times by up to 70 percent and installing components on carriers, submarines, and destroyers.
- The program expanded through AUKUS cooperation and new material standards, enabling faster repairs and distributed manufacturing across U.S. and allied naval forces.
The United States Navy completed a major transition by fully integrating additive manufacturing, also known as 3D printing, into frontline fleet operations, cutting part lead times by up to 70 percent and placing printed components aboard aircraft carriers, submarines, and surface combatants, the service confirmed.
According to Naval Sea Systems Command (NAVSEA), the shift moved additive manufacturing from limited testing into routine use across the Navy’s supply chain, maintenance system, and industrial base. The effort was carried out in coordination with the Maritime Industrial Base and private industry partners and is now embedded in operational sustainment for deployed forces.
One of the most visible milestones came when Huntington Ingalls Industries installed a 1.5-meter, 450-kilogram metal valve manifold produced through additive manufacturing aboard a nuclear-powered aircraft carrier. The installation marked the first time a part of this size and complexity was fielded on a U.S. carrier using 3D printing, validating the technology for surface combatants.
The submarine force followed with its own breakthrough when a metal additively manufactured component was installed on a Virginia-class submarine. Industry partners described the achievement as a turning point for subsurface platforms, confirming that 3D-printed metal parts can meet the Navy’s strict requirements for deep-sea operations.
NAVSEA said the results demonstrated that additive manufacturing can now support high-consequence systems across the fleet, not just low-risk components. The Navy has since expanded its use of printed parts to destroyers, maintenance facilities, and forward-deployed repair units.
International cooperation also advanced during 2025 through the AUKUS partnership with the United Kingdom and Australia. The three navies completed a shipboard installation of a metal 3D-printed component, confirming that additive manufacturing standards can be shared across allied fleets and enabling interoperable repairs during joint operations.
The Navy reported immediate logistics gains from the expanded use of additive manufacturing. In one case, lead time for a critical valve used on destroyers was reduced by 70 percent after production shifted to 3D printing, avoiding delays linked to traditional casting and machining. At maintenance centers, printed polymer components generated large cost savings and allowed ships to return to service faster than standard supply chains would allow.
At the waterfront level, Navy maintenance units used additive manufacturing to complete repairs that would previously have required long waits for replacement parts. The Southeast Regional Maintenance Center reported more than $300,000 in cost avoidance from a single printed component, while the Forward Deployed Regional Maintenance Center in Rota reduced repair time by 80 percent by fabricating parts on site.
Joint-service cooperation also expanded as the Navy used a 3D printer installed aboard a submarine to produce a replacement component for a U.S. Coast Guard vessel, restoring equipment without the need for depot-level logistics. NAVSEA said the event demonstrated how additive manufacturing can close repair gaps between sea services during operations.
To support scaling, NAVSEA worked with academia and industry to streamline material qualification. The Navy reduced testing requirements by more than 60 percent and released new military specifications for additive materials, including MIL-PRF-32802, MIL-PRF-32803, and MIL-PRF-32804, allowing wider use of approved printed metals and polymers across programs.
The Navy will continue expanding its catalogue of printable parts in 2026, with industry partners adding new components to support ships, submarines, and aircraft. The effort remains focused on low-risk, high-impact parts while progressively moving toward more complex applications.