# Full Spectrum Undersea Warfare (FSUSW) (INP)

**R-2A activity** of project 1508 — Undersea Systems  
**Program element:** 0602750N — Future Naval Capabilities Applied Research  
**Component:** U.S. Navy · **Budget Activity:** 2  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0602750N/1508/a5  
**Parent:** https://hitchintel.com/programs/0602750N/1508

## Summary

This activity requests $29.5M in FY2027, 45% of project 1508, down 11% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** Continue the Full Spectrum Undersea Warfare INP by working the following tasks: - Continue 3rd generation Unmanned Undersea Vehicle (UUV) virtual and in water testing - Demonstrate UUV & Unmanned Aerial Vehicle (UAV) autonomy, including UUV digital simulation - Conduct Undersea munitions effects characterization phase 2 - Finish Phase 1 of Undersea munitions effects characterization - Build of GEN 2 Revolver - Testing of GEN 1 Revolver with UAV and decoy devices

**FY2026 to FY2027 change.** The decrease in funding from FY 2026 to FY 2027 is due to the planned decrease in Applied Research activities and the completion of some applied research efforts which transition to Advanced Technology Development in PE 0603673N Future Naval Capabilities Advanced Tech Dev Project 2966.

## Before the request year

**FY2026 plans — current year.** Continue: - Advanced Technology Development associated with the Multi-Vehicle Torpedo Tube Deployment System (MVTTDS) prototype for Virginia Class submarines, which includes Revolver and Reloader including at sea (on a submarine) Revolver prototype testing and model validation - Spiral development build of GEN 2 Revolver, incorporating capability improvements for objective payloads Complete: - Design of GEN 2 Reloader design - Advanced development of components and system for at sea operations, including resiliency and reliability of 3 inch Submarine Launched UAV hardware and software for select missions. Initiate: - Build of GEN 2 Revolver - Testing of GEN 1 Revolver with UAV and decoy devices

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 33.0 |
| FY2027 | Request | 29.5 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Other activities in project 1508

- [Ocean Battlespace Sensing](https://hitchintel.com/programs/0602750N/1508/a6) — FY2027 32.3
- Undersea Weapons — FY2027 4.3
- Mine and Expeditionary Warfare — FY2027 0.0
- Undersea Warfare — FY2027 0.0
- Environmental Information Warfare — FY2027 0.0
- Expeditionary Ocean & Battle Space Applications — FY2027 0.0

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibit R-2A, PE 0602750N project 1508 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

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