# Advanced Processing Build (APB)

**R-2A activity** of project 0223 — Sub Combat System Improvement (ADV)  
**Program element:** 0603561N — Advanced Submarine System Development  
**Component:** U.S. Navy · **Budget Activity:** 4  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0603561N/0223/a0  
**Parent:** https://hitchintel.com/programs/0603561N/0223

## Summary

This activity requests $43.4M in FY2027, 83% of project 0223, up 1.4% 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 to rapidly develop new or improved software optimized for the latest sensors, threats, scenarios, and tactics for Sonar (ARCI) (BQQ-10), Combat Control (BYG-1), Imaging (BVY-1), and EW (BLQ-10). - Continue Step 1 and Step 2 testing of capabilities as they are ready in response to Fleet requirements consistent with the multi-year capability development road map. Shift focus to capabilities targeting the APB-27 build. - Integrate platform defense displays and automation, re-architecting digital acoustic communications, tackling RF Communications awareness, and continue improvements in holistic active emission capabilities, sensor processing improvements to pace threat, decision superiority and situational awareness tools, and continued improvements in environmental assessment. - Continue to develop capabilities targeting SWFTS CCE to assist PEO UWS production offices with re-architecture acceleration and faster capability delivery to the fleet, improve cyber security and reduce software certification timelines. - Continue APB-25 Step 3 laboratory testing of capabilities on SWFTS CCE to quantify system stability and capability improvements at the individual capability level and ensure system is ready for end-to-end cross-subsystem ROI and G&S land-based testing. - Conduct land-based testing of CCE-based APB-25 in coordination with Fleet Commands to verify operational performance of SWFTS CCE and to inform training and employment. - Plan for land-based ROI testing for APB-27 targeted capabilities, working with Fleet Commands to develop tactically relevant scenarios that can quantify system improvement. - Continue to work with SWFTS production programs to maintain APB-25 viability on older hardware baselines, allowing software updates to reach more of the Submarine Fleet thereby reducing the number of variants in operation and their associated maintenance and training requirements. - Continue to deliver select capabilities to the Fleet as soon as Step 3 land-based testing is complete. - Continue to develop draft APB-25 training content for SLC. - Continue to develop employment doctrine in coordination with UWDC to assist the Fleet in creating tactics in support of deployments. - Continue to improve software delivery practices to enable accelerated response to out-of-cycle Fleet tactical needs. Expand the effort to focus on delivery of smaller container-based updates enabled by SWFTS re-architecture efforts. - Continue to maintain the land-based test facility for software maintenance, hardware refresh, and the addition of new array types. - Continue dataset curation of real-world collections to support development and evaluation of new capabilities. - Support engineering IPTs to assist production programs in planning future hardware designs, software architecture, and production methodologies. - Maintain the Secret Wide Area Network to support efficient collaboration and communication of geographically diverse work locations.

**FY2026 to FY2027 change.** The FY 2026 ($42.782M) to FY 2027 ($43.382M) increase ($+0.600M) is in line with the year over year inflation expected with the RDT&EN appropriation.

## Before the request year

**FY2026 plans — current year.** - Rapidly develop new or improved software optimized for the latest sensors, threats, scenarios, and tactics for Sonar (ARCI) (AN/BQQ-10), Combat Control (AN/BYG-1), Imaging (AN/BVY-1), and EW (AN/BLQ-10). - Per direction of PEO UWS, accelerate SWFTS Common Compute Environment (CCE) cloud re-architecture to further enable more secure and rapid operational capability delivery to the Fleet, improving cybersecurity and reducing software certification timelines. Additionally, re-code and re-architect legacy system code to provide new operational capability and take advantage of cloud computing environments to improve reliability, resiliency, and efficiency. - Continue Step 1 and Step 2 testing of capabilities as they are ready in response to Fleet requirements consistent with the multi-year capability development road map. - Integrate holistic active emission capabilities, sensor processing improvements to pace threats, decision superiority and situational awareness tools, and continued improvements in environmental assessment. - Continue APB-25 Step 3 laboratory testing of capabilities on SWFTS CCE to quantify system stability and capability improvements at the individual capability level and ensure system is ready for end-to-end cross-subsystem Return-On-Investment (ROI) and Gaps and Seams (G&S) land-based testing. - Plan land-based testing of APB-25 in coordination with Fleet Commands to develop tactically relevant scenarios to quantify system improvement, verify operational performance of SWFTS CCE, and to inform training and employment. - Work with SWFTS production programs to maintain APB-25 viability on older hardware baselines, allowing software updates to reach more of the Submarine Fleet thereby reducing the number of variants in operation and their associated maintenance and training requirements. - Support delivery of APB-23 to the Submarine Fleet. - Continue to deliver select capabilities to the Fleet as soon as Step 3 land-based testing is complete. - Develop draft APB-25 training content for Submarine Learning Center (SLC). - Develop employment doctrine in coordination with UWDC to assist the Fleet in creating tactics in support of deployments. - Improve software delivery practices to enable accelerated response to out-of-cycle Fleet tactical needs. - Update the land-based test facility for software maintenance, hardware refresh, and the addition of new array types. - Continue dataset curation of real-world collections to support development and evaluation of new capabilities. - Support engineering Integrated Product Teams (IPTs) to assist production programs in planning future hardware designs, software architecture, and production methodologies. - Maintain the Secret Wide Area Network to support efficient collaboration and communication of geographically diverse work locations.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 43.9 |
| FY2026 | Enacted | 42.8 |
| FY2027 | Request | 43.4 |

> 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 0223

- Advanced Sensors — FY2027 4.5
- Large Vertical Array (LVA) — FY2027 3.1
- Project Rebound — FY2027 1.5

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibit R-2A, PE 0603561N project 0223 (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.*