SSN(X)

The SSN(X) Class Submarine Development program is a strategic initiative by the U.S. Navy to develop a new class of attack submarines, replacing the existing VIRGINIA Class. This effort addresses the growing demand for undersea warfare capabilities in response to strategic competition from near-peer adversaries. The primary objectives include enhancing speed, payload capacity, acoustic superiority, and operational availability. These submarines will be equipped to conduct full-spectrum undersea warfare and coordinate with off-hull vehicles, sensors, and allied forces.

The program focuses on evaluating various submarine designs and technologies to create an affordable platform that meets mission requirements. Key efforts involve trade studies, technology assessments, and developing acquisition documentation. Emphasis is placed on advanced material development, improved stealth features, and increased payload capacity. Additionally, digital engineering practices and industry collaboration are prioritized to ensure capability priorities are met while maintaining affordability.

In FY 2025, the SSN(X) program will continue focusing on concept development and technology maturation. This includes completing the Analysis of Alternatives (AoA), advancing prototyping efforts for critical components such as propulsors and shafting, and refining design specifications. The program also aims to maintain infrastructure readiness and support industrial base evaluations to ensure a smooth transition into construction phases by 2040.

The initiative leverages lessons learned from previous submarine classes like Virginia and Columbia to enhance its design strategy. It employs a mission engineering approach to align design efforts with operational needs. Continued support ensures that design maturity and infrastructure readiness are achieved in time for planned authorization milestones, thereby sustaining the industrial base at necessary levels for future construction activities.