# Project 0766 — IUSS Detect/Classif System

**Program element:** 0204311N — Integrated Surveillance System  
**Project:** 0766  
**Component:** U.S. Navy  
**Appropriation:** 1319 — RDT&E, Navy  
**Budget Activity:** 7 — Operational System Development  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0204311N/0766  
**Parent:** https://hitchintel.com/programs/0204311N

## Summary

Project 0766 — IUSS Detect/Classif System requests $57.4M in FY2027, 80% of the $71.9M requested for program element 0204311N, down 3.4% on FY2026. 6 R-2A activities decompose the request, 1 new this cycle. Lockheed Martin is the largest named R-3 performer at $7.5M, 13% of the project's FY2027 R-3 total.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 52.1 |
| FY2026 | Enacted | 59.4 |
| FY2027 | Request | 57.4 |
| FY2028 | Outyear | 67.7 |
| FY2029 | Outyear | 70.9 |
| FY2030 | Outyear | 71.2 |
| FY2031 | Outyear | 72.6 |

> Estimate types are not summed. This project is one leaf of PE 0204311N; the PE total is the sum of its projects, never added to them.

## What project 0766 buys

The Surveillance Towed Array Sensor System (SURTASS) project comprises the mobile, tactical arm of the Integrated Undersea Surveillance System (IUSS), providing long range detection and cueing for tactical weapons platforms against both diesel- and nuclear-powered submarines. SURTASS also provides the undersea surveillance necessary to support regional conflicts and sea-lane protection. SURTASS has recent passive and active success against diesel submarines operating in both shallow and deep ocean environments. SURTASS is leveraging existing developments and reducing costs by using Non-Developmental Items and commercial hardware, supporting common Navy Undersea Warfare processing and towed array developments, and increasing operator efficiency through computer-aided detection and classification processing. SURTASS development efforts include Low Frequency Active (LFA)/Compact Low Frequency Active (CLFA) improvements, common IUSS processing, twin-line array development and processing, next generation array developments, improved detection and classification/passive automation to counter quieter threats, integrated active and passive operations, and improved Battle Group support. LFA/CLFA provides an active adjunct capability for IUSS passive and tactical sensors to counter the quieter diesel and nuclear threats of the 2020s and beyond. Improvements include TL-29A/LFA/CLFA integration enhancements, advanced waveforms for littoral/shallow water operations including Doppler sensitive waveforms, and processing algorithms to reduce clutter and reverberation false alarms in shallow water. The Integrated Common Processor (ICP) is a derivative of the Naval Sea Systems Command (NAVSEA) Submarine Acoustic Rapid Commercial Off the Shelf (COTS) Insertion (ARCI) program and is being augmented for IUSS requirements. Together, the LFA/CLFA improvements, TL-29A, and the ICP support the SURTASS Active Improvement Program. Functional improvements to ICP/SURTASS are delivered to the Fleet in software "builds" under the DevSecOps process, while hardware improvements are delivered through the Tech Insertion (TI) process. SURTASS participates in the process by contributing algorithms for consideration, supplying peer group members for review of candidate algorithms, participating in test evolutions, and incorporating improved algorithms into operational systems.

**R-3 lines of work:** Product Development; Support; Test and Evaluation; Management Services.

## Named R-3 performers

| Performer | $M | Share of this project's FY2027 R-3 total |
|---|---|---|
| Lockheed Martin | 7.5 | 13% |
| L3Harris | 0.7 | 1.2% |
| NIWC PAC | 0.3 | 0.5% |
| OPTEVOR | 0.3 | 0.4% |

> Budget-justification contract funding, not obligations. Shares need not reach 100% — unnamed and government work is in the denominator.

## Activities (R-2A) — 6

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| Classified Effort | 33.1 | 41.1 | 35.5 | −14% | — |
| Integrated Common Processor (ICP) | 13.9 | 12.3 | 11.0 | −11% | [a0](https://hitchintel.com/programs/0204311N/0766/a0) |
| Next Generation SURTASS Array | 0.0 | 0.0 | 8.1 | new | — |
| Compact Low Frequency Active (CLFA) | 1.0 | 2.0 | 1.4 | −30% | — |
| TL-29A/Twin-Line | 4.0 | 3.7 | 1.0 | −73% | — |
| SURTASS Team Trainers | 0.0 | 0.4 | 0.4 | +0% | — |

> 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.

### Classified Effort

**FY2026 to FY2027 change.** Decrease of $5.558 million based on reducing scope of work in FY 2027 to fund other Navy priorities.

**FY2026 plans — current year.** The FSS portion of 0766 is classified with details available at a higher classification level.

### Integrated Common Processor (ICP)

- Continue Advanced Capabilities development of Artificial Intelligence/Machine Learning algorithms for enhanced human-machine performance; Continue system infrastructure modernization to streamline system development, to provide more flexibility in hardware and to enable for more frequent software updates of software to include…

Full year-by-year narrative: https://hitchintel.com/programs/0204311N/0766/a0

### Next Generation SURTASS Array — NEW START

**FY2027 planned work.** - Commence development for Next Generation Surveillance array. - Award contract and begin Engineering Development Model (EDM) build.

**FY2026 to FY2027 change.** The $8.123M increase is the result of directly funding the development of the next generation surveillance array including contract award and EDM build.

### Compact Low Frequency Active (CLFA)

**FY2027 planned work.** -Continue product improvement and upgrade efforts for SURTASS/LFA/CLFA systems -Continue development of Cyber Security enhancements -Conduct Pierside and At-Sea T&E of LFA/CLFA enhancements -Conduct Cyber Security evaluation and testing of deployed systems

**FY2026 to FY2027 change.** The $0.600M decrease is the result of reprioritization of funding to development of the next generation surveillance array.

**FY2026 plans — current year.** -Continue product improvement and upgrade efforts for SURTASS/LFA/CLFA systems -Continue development of Cyber Security enhancements -Conduct Pierside and At-Sea T&E of LFA/CLFA enhancements -Conduct Cyber Security evaluation and testing of deployed systems

### TL-29A/Twin-Line

**FY2027 planned work.** - Continue development of upgraded telemetry components to address component obsolescence. - Continue development of fishing net mitigation solutions and upgrades to reduce potential for array damage from fishing apparatus. - Continue at-sea test and evaluation efforts to demonstrate passive array system hardware and processing enhancements and net mitigation equipment. - Continue evaluation of true fiber optic array technologies and array components, including Twin-line variants of new submarine Long-line arrays for future application to SURTASS. - Continue development of future passive systems to outfit T-AGOS 25 class platforms. - Continue development of replacement technologies for obsolete and manufacturer discontinued parts and to address high failure items and other reliability and maintainability improvements.

**FY2026 to FY2027 change.** The $2.651M decrease is the result of reprioritization of funding to development of the next generation surveillance array.

**FY2026 plans — current year.** - Continue development of upgraded telemetry components to address component obsolescence. - Continue development of fishing net mitigation solutions and upgrades to reduce potential for array damage from fishing apparatus. - Continue at-sea test and evaluation efforts to demonstrate passive array system hardware and processing enhancements and net mitigation equipment. - Continue evaluation of true fiber optic array technologies and array components, including Twin-line variants of new submarine Long-line arrays for future application to SURTASS. - Continue development of future passive systems to outfit T-AGOS 25 class platforms. - Continue development of replacement technologies for obsolete and manufacturer discontinued parts and to address high failure items and other reliability and maintainability improvements.

### SURTASS Team Trainers

**FY2027 planned work.** - Continue development efforts for SURTASS Team Trainers for hardware and processing to support new passive and active arrays/sensors, communications and ship equipment.

**FY2026 plans — current year.** - Commence development efforts for SURTASS Team Trainers for hardware and processing to support new passive and active arrays/sensors, communications and ship equipment.

## 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/0204311N.

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0204311N project 0766 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0204311N")`.

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