# Project 0253 — Nav & Electro-Optical Supt

**Program element:** 0604503N — Submarine SWFTS Modernization  
**Project:** 0253  
**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/0604503N/0253  
**Parent:** https://hitchintel.com/programs/0604503N

## Summary

Project 0253 — Nav & Electro-Optical Supt requests $39.4M in FY2027, 20% of the $195.4M requested for program element 0604503N, up 0.4% on FY2026. 4 R-2A activities decompose the request. Lockheed Martin is the largest named R-3 performer at $24.0M, 61% of the project's FY2027 R-3 total.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 39.3 |
| FY2027 | Request | 39.4 |
| FY2028 | Outyear | 40.0 |
| FY2029 | Outyear | 40.7 |
| FY2030 | Outyear | 40.9 |
| FY2031 | Outyear | 41.7 |

> Estimate types are not summed. This project is one leaf of PE 0604503N; the PE total is the sum of its projects, never added to them.

## What project 0253 buys

AN/BVY-1 Integrated Submarine Imaging System (ISIS) will continue to add new capabilities via the Technical Insertion (TI)/Advanced Processing Build (APB) process while working with partner Submarine Warfare Federated Tactical System (SWFTS) programs to realign software development according to Development Security Operations (DevSecOps) software processes. The Navy is pursuing a cloud enabled containerization architecture transformation across SWFTS (PE 0604503N Project 0219, Project 0236, Project 0253, and Project 0775) to increase operational agility and resiliency at the speed of relevance. FY27 continues to maximize mast RDTE investment and optimizes production through two distinct development programs. First, the New Mast Capability Development Program builds on prior year investment by continuing to insert emerging technologies for future mast module production and begins early design of the Type 2S mast. Second, the Legacy Mast Improvements Program specifically focuses on incorporating mature technologies and design improvements into legacy masts; this effort provides substantial improvements to the large inventory of photonics and imaging masts. Both programs ensure that submarines can conduct operations in high intensity littoral environments, intelligence gathering, real time imagery, and support the safe and effective employment of surveillance and weapons systems. Finally, FY27 funds the TI-24/APB-24 DT and other tests that verify software improvements funded in previous fiscal years. The Navigation and Electro-Optical (E-O) program enables littoral operations by procuring ISIS, the production of low-profile photonics masts (Low Profile Photonics Mast (LPPM), Type 20, and Type 24), the maintenance and sustainment of periscope and legacy photonic masts, the production and sustainment of Universal Modular Mast Systems and Dip Loops, and the development of the ISIS inboard processing components of the Submarine Warfare Federated Tactical System (SWFTS). The Department of the Navy established the ISIS to rapidly field the Type 18 periscope, RADAR rangefinder, Type 8 Mod 4 Infra-red (IR) periscope system, and integrate existing periscope imagery systems into a single imaging system for installation on board SSN 688 class and SEAWOLF class submarines.

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

## Named R-3 performers

| Performer | $M | Share of this project's FY2027 R-3 total |
|---|---|---|
| Lockheed Martin | 24.0 | 61% |
| L3Harris | 9.2 | 23% |
| COMOPTEVFOR | 0.3 | 0.8% |

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

## Activities (R-2A) — 4

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| ISIS and Photonics common software and hardware capabilities development and obsolescence | 0.0 | 29.1 | 29.4 | +1% | [a0](https://hitchintel.com/programs/0604503N/0253/a0) |
| New Mast Capability Development | 0.0 | 6.7 | 6.7 | −0% | — |
| Legacy Mast Improvements | 0.0 | 2.6 | 2.5 | −4% | — |
| Imaging Systems Test Efforts | 0.0 | 0.8 | 0.8 | +2% | — |

> 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.

### ISIS and Photonics common software and hardware capabilities development and obsolescence

Commence the TI-28 capability development process which provides the necessary engineering, technical program, project and configuration management of the hardware and software baseline to incorporate additional sensitive software imaging algorithms, while concluding the development of TI-26.

Full year-by-year narrative: https://hitchintel.com/programs/0604503N/0253/a0

### New Mast Capability Development

**FY2027 planned work.** Continue investment in additional capabilities beyond the Type 24 baseline. Specific efforts include: - Developing technology candidates - Executing tests

**FY2026 to FY2027 change.** This $0.028M decrease based on planned phasing of development efforts.

**FY2026 plans — current year.** Expand the design, development, fabrication, and testing of LPM modules to include additional capabilities beyond the Type 24 baseline. Specific efforts include: - Identifying additional candidates for development - Execute design reviews - Develop test plans

### Legacy Mast Improvements

**FY2027 planned work.** Continue investment in mature technologies and design improvements into legacy masts. Specific efforts include: - Developing technology candidates - Executing tests

**FY2026 to FY2027 change.** This $0.11M decrease is due to planned phasing of development efforts.

**FY2026 plans — current year.** Incorporate mature technologies and design improvements into legacy masts which provide substantial improvements to capability and maintainability of existing inventory of photonics and imaging masts. Specific efforts include: - Identifying additional candidates for development - Execute design reviews - Develop test plans

### Imaging Systems Test Efforts

**FY2027 planned work.** Fund ISIS and mast system testing including the TI-24/APB-23 DT.

**FY2026 to FY2027 change.** The $0.016M increase is due to inflation adjustment to fund ISIS and mast system testing including the TI-24/APB-23 DT.

**FY2026 plans — current year.** Fund ISIS and mast system testing including the TI-20/APB-21 OT.

## 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/0604503N.

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0604503N project 0253 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604503N")`.

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