# Ssn(x) — Program Element 0604850N

**Program element:** 0604850N  
**Component:** U.S. Navy  
**Appropriation:** 1319 — RDT&E, Navy  
**Budget Activity:** 5 — System Development & Demonstration  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604850N

## Summary

U.S. Navy requests $315.9M in FY2027, sustained across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators funded it in full. Rite Solutions leads the industry work.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 327.4 |
| FY2026 | Enacted | 336.0 |
| FY2027 | Request | 315.9 |
| FY2028 | Outyear | 308.4 |
| FY2029 | Outyear | 366.1 |
| FY2030 | Outyear | 402.9 |
| FY2031 | Outyear | 410.3 |

> Estimate types are not summed — the profile mixes actuals, enacted law, the request, and outyear projections.

## Congressional marks (FY2027)

| Stage | Marked ($M) | Change ($M) |
|---|---|---|
| Request | 315.9 | — |
| House NDAA (HASC) | 315.9 | +0.0 |
| Senate NDAA (SASC) | 315.9 | +0.0 |
| House Approps (HAC-D) | 315.9 | +0.0 |

> FY2027 NDAA authorization marks, as of 2026-07-27. Not appropriations or final law.

## Projects (1)

| Project | Title | FY2025 actual | FY2026 enacted | FY2027 request | Move |
|---|---|---|---|---|---|
| 2368 | SSN(X) Class Submarine Development | 327.4 | 336.0 | 315.9 | −6% |

> Projects are the summable leaves: the program element total is their sum, never added to it.

### Project 2368 — SSN(X) Class Submarine Development

SSN(X) will be designed to enter, fight, and deny within heavily defended adversary bastions from the sea to the seabed. SSN(X) will deliver increased warfighting performance through larger payload volume, improved lethality and survivability, and organic hosting of Robotic and Autonomous Systems (RAS). These capabilities assure access to threat-denied areas, deny adversary safe havens, and ensure flexibility. This project encompasses Navy RDT&E efforts required to design the next SSN.

**Named R-3 performers** (share of this project's FY2027 R-3 total, so they need not reach 100%)**:** Rite Solutions (3.2, 1.0%), Serco (2.9, 0.9%).

| Activity (R-2A) | FY2025 | FY2026 | FY2027 |
|---|---|---|---|
| Product Development | 302.6 | 310.1 | 301.4 |
| Support | 18.0 | 18.3 | 9.4 |
| Management Services | 6.8 | 7.5 | 5.1 |

> R-2A activities carry the prior, current and budget year only — no five-year plan. Coverage is partial, so count them, never total them.

## Where the FY2027 request goes

| Category | Share | $M |
|---|---|---|
| Industry primes | 2.0% | 6.2 |
| Government labs & warfare centers | 25% | 78.6 |
| Other / unspecified | 73% | 231.1 |

**Top named industry performers:** .

> R-3 exhibit contract funding, not USAspending obligations.

## Mission & acquisition strategy

The National Defense Strategy (NDS) requires the United States to have the most lethal and capable military in the world. The U.S. Navy must meet the rising challenge by delivering a new attack submarine to maintain superiority in the undersea domain. SSN(X) will significantly contribute to rebuilding our military, reinforcing deterrence in the undersea, and building lethality in the Joint Force. It will provide enhanced lethality, survivability, speed and operational availability to maintain undersea supremacy against growing threats. SSN(X) will conduct full spectrum undersea warfare and employ and coordinate with Robotic and Autonomous Systems (RAS) and sensors as a force multiplier.

The formal acquisition strategy for SSN(X) will be drafted post Milestone A. Preliminary Design for SSN(X) will be accomplished through a collaborative Navy-Industry effort to maximize the benefits of competition between the potential shipbuilders.

## Related program elements

- [0603573N — Advanced Surface Machinery Sys](https://hitchintel.com/programs/0603573N) (Navy)
- [0604269N — EA-18 Squadrons](https://hitchintel.com/programs/0604269N) (Navy)
- [0604009F — Afwerx](https://hitchintel.com/programs/0604009F) (Air Force)
- [0701212F — Test And Evaluation Support Budget Authority](https://hitchintel.com/programs/0701212F) (Air Force)

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-3, PE 0604850N (PB PB2027); FY2027 NDAA committee marks (as of 2026-07-27).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604850N")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*