# Project 1508 — Undersea Systems

**Program element:** 0602750N — Future Naval Capabilities Applied Research  
**Project:** 1508  
**Component:** U.S. Navy  
**Appropriation:** 1319 — RDT&E, Navy  
**Budget Activity:** 2 — Applied Research  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0602750N/1508  
**Parent:** https://hitchintel.com/programs/0602750N

## Summary

Project 1508 — Undersea Systems requests $66.1M in FY2027, 22% of the $305.4M requested for program element 0602750N, down 0.3% on FY2026. 7 R-2A activities decompose the request, 1 new this cycle.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 66.3 |
| FY2027 | Request | 66.1 |
| FY2028 | Outyear | 56.5 |
| FY2029 | Outyear | 50.4 |
| FY2030 | Outyear | 35.7 |
| FY2031 | Outyear | 36.3 |

> Estimate types are not summed. This project is one leaf of PE 0602750N; the PE total is the sum of its projects, never added to them.

## What project 1508 buys

This project develops and matures technologies that enable superior warfighting capabilities for surface and sub-surface naval platforms, undersea weapons and countermeasures, and Marine Corps technologies to a point where they can be proposed and continued as Future Naval Capabilities in program element (PE) 0603673N, Future Naval Capabilities Advanced Technology Development.

## Activities (R-2A) — 7

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| Ocean Battlespace Sensing | 0.0 | 0.0 | 32.3 | new | [a6](https://hitchintel.com/programs/0602750N/1508/a6) |
| Full Spectrum Undersea Warfare (FSUSW) (INP) | 0.0 | 33.0 | 29.5 | −11% | [a5](https://hitchintel.com/programs/0602750N/1508/a5) |
| Undersea Weapons | 0.0 | 3.8 | 4.3 | +15% | — |
| Mine and Expeditionary Warfare | 0.0 | 3.4 | 0.0 | −100% | — |
| Undersea Warfare | 0.0 | 5.9 | 0.0 | −100% | — |
| Environmental Information Warfare | 0.0 | 15.1 | 0.0 | −100% | — |
| Expeditionary Ocean & Battle Space Applications | 0.0 | 5.2 | 0.0 | −100% | — |

> Activities carry the prior, current and budget year only — no five-year plan. In the request year they partition this project exactly; in earlier years they can under-cover it.

### Ocean Battlespace Sensing — NEW START

Mine and Expeditionary Warfare: Initiate: -Develop ultra-low size, weight, and power (SWaP) computing payloads and machine learning algorithms for unmanned mine hunting systems. New hardware designs interfaced with sensors vastly improves automated seabed interrogation and perception. -Development of high area coverage rate mine warfare…

Full year-by-year narrative: https://hitchintel.com/programs/0602750N/1508/a6

### Full Spectrum Undersea Warfare (FSUSW) (INP)

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…

Full year-by-year narrative: https://hitchintel.com/programs/0602750N/1508/a5

### Undersea Weapons

**FY2027 planned work.** - Continue: Otto Fuel Revision tech candidate. Improvement in fuel formulation for increased range of mission systems. - Continue: Next generation Subsea and Seabed Warfare (SSW) Weapons

**FY2026 to FY2027 change.** Increase in funding in FY27 is due to increased research into Next generation Subsea and Seabed Warfare (SSW) Weapons

**FY2026 plans — current year.** - Complete: Advanced Torpedo Tactics - Initiate: Otto Fuel Revision tech candidate. Improvement in fuel formulation for increased range of mission systems. - Initiate: Next generation Subsea and Seabed Warfare (SSW) Weapons

### Mine and Expeditionary Warfare

**FY2026 to FY2027 change.** The funding decrease from FY2026 to FY2027 is due to the realignment of funding from the Mine and Expeditionary Warfare planned program to the Ocean Battlespace Sensing planned program within the same PE and Project. The purpose of this realignment is to better describe the research investments within this activity and to align to Navy priorities.

**FY2026 plans — current year.** Complete: -Development of high area coverage rate mine warfare capability for contested environments to support naval maneuver in Western Pacific; this includes development of enabling machine learning algorithms, autonomous behavior, and hardware which enables autonomous systems to conduct long-duration, low-observable seabed surveys. - Development of a common encapsulation system supporting a variety of effectors; this includes technical development of effector capability, technical modification to support modular encapsulation, and technical investigation options associated with integrated delivery. - Development of advanced diagnostics, communications, endurance, and neutralization technologies to improve access, range, C2, sensing, localization and lethal effects of the Navy EOD Expeditionary Stand-off Response System.

### Undersea Warfare

**FY2026 to FY2027 change.** The funding decrease from FY2026 to FY2027 is due to the realignment of funding from the Undersea Warfare planned program to the Ocean Battlespace Sensing planned program within the same PE and Project. The purpose of this realignment is to better describe the research investments within this activity and to align to Navy priorities.

**FY2026 plans — current year.** Complete: - In-water comparative analysis/testing of glider towed arrays for detection of ASW threats in the ocean environment; leverage emerging glider technologies for increased endurance and consider novel array fabrication to characterize best fit for variety of ocean environments. - Development of signal processing and displays to improve performance and reduce vulnerability for submarine active sonar. - Development of computational methods to detect very quiet submarine targets by combining evidence from multiple arrays. - Development of algorithms and software for making probabilistic USW-related sensor performance forecasts that can be used in strike group and theater anti-submarine warfare mission plans.

### Environmental Information Warfare

**FY2026 to FY2027 change.** The funding decrease from FY2026 to FY2027 is due to the realignment of funding from the Environmental Information Warfare planned program to the Ocean Battlespace Sensing planned program within the same PE and Project. The purpose of this realignment is to better describe the research investments within this activity and to align to Navy priorities.

**FY2026 plans — current year.** Complete: - Development of algorithms and software for making probabilistic USW-related sensor performance forecasts that can be used in strike group and theater anti-submarine warfare mission plans. - Development of algorithms to assess and predict the impact of the atmospheric aerosols and turbulence on the performance of electro-optic and infra-red naval sensors. - Algorithm development for improved cloud visibility assessment by leveraging new government-owed, open architecture paradigm in Space-Based Environmental Monitoring (SBEM) data processing and delivery needed to improve timely, accurate decision making in the maritime battlespace environment. -To apply system learning to tactical environment assessment and prediction in support of aviation applications. -Development of improvements to polar ionosphere sensing and prediction for a regional full-physics model leveraging recently developed sensors and advances in polar space weather science. - Development of a fully coupled ionospheric-thermospheric model to permit greatly improved multi-day forecasts for propagation conditions of HF communications and radars. - Characterization of Earth science model error in decision support tools by examining forecast fidelity from short-term (hourly) to sub-climate (monthly) timescales using a hierarchy of data quality, from full coupled dynamical simulations to regional, statistical, and climatological guidance. - Development of the numerical representation of improved tropospheric-stratospheric interaction and mesospheric data assimilation for gravity wave processes leading to extended range prediction of extreme weather events - Algorithm development for improved cloud visibility assessment by leveraging new government-owed, open architecture paradigm in Space-Based Environmental Monitoring (SBEM) data processing and delivery needed to improve timely, accurate decision making in the maritime battlespace environment. - Application of system learning to tactical environment assessment and prediction in support of aviation applications. - New government-owed, open architecture paradigm in Space-Based Environmental Monitoring (SBEM) data processing and delivery needed to improve timely, accurate decision making in the maritime battlespace environment. - Development of a prototype radio frequency (RF) communications and signature management tool for small unit maneuver in the coastal and terrestrial environments to assess the environmental variability spatially and temporally. Continue: - Development of a fully coupled ionospheric-thermospheric model to permit greatly improved multi-day forecasts for propagation conditions of HF communications and radars. - Development of the numerical representation of improved tropospheric-stratospheric interaction and mesospheric data assimilation for gravity wave processes leading to extended range prediction of extreme weather events. Initiate and Complete: - Research into starlight Transmittance through Aerosol Restricted maRine skY (STARRY) - Research into High-latitude Impacts of Particle Precipitation on the Ionosphere (HIPPI)

### Expeditionary Ocean & Battle Space Applications

**FY2026 to FY2027 change.** The decrease in funding from FY 2026 to FY 2027 is due to the realignment and consolidation of all expeditionary funding under PE 0602750N to the new Expeditionary Campaigns project number 1510 within this PE. Planned programs will continue under new Expeditionary Campaigns project number and have been updated to align to current expeditionary and marine corps priorities.

**FY2026 plans — current year.** Complete: - Development of acoustic and non-acoustic sensors and transduction systems as a means to provide next-generation sensing technologies to provide undersea monitoring and tracking in the littorals by expeditionary forces. (Expeditionary Maneuver Warfare (EMW) and Combating Terrorism) - Development of automated sonar processing, sensor command and control, sensor networks, and data exfiltration in order to enable expeditionary Antisubmarine Warfare/Undersea Warfare systems in the littorals and maritime choke points. (Expeditionary Maneuver Warfare (EMW) and Combating Terrorism) - Development of night-time and low-light electro-optical sensors for real-time, computer vision based automatic target detection of explosive hazards and airfield damage from unmanned aerial and ground platforms. (Expeditionary Maneuver Warfare (EMW) and Combating Terrorism)

## What is NOT on this page

Congressional marks, the R-2 mission description and acquisition strategy, the industry vs government split of the whole request, and related program elements are recorded at **program-element** grain — an NDAA mark lands on a PE, never on a project. They are at https://hitchintel.com/programs/0602750N.

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0602750N project 1508 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0602750N")`.

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