# Multistatic Active Coherent (MAC)

**R-2A activity** of project 0480 — ASW Sensors & Proc  
**Program element:** 0604261N — Acoustic Search Sensors  
**Component:** U.S. Navy · **Budget Activity:** 5  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604261N/0480/a0  
**Parent:** https://hitchintel.com/programs/0604261N/0480

## Summary

This activity requests $35.9M in FY2027, 89% of project 0480, down 3.0% 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.** Conclude FR-115 DT/OT. Initiate Tactical Open Mission Systems (TOMS) software changes to add the SSQ-145 receiver. Conduct USAB1 DDVLA sonobuoy (SSQ-145) Critical Design Review (CDR).

**FY2026 to FY2027 change.** FY 2026 to FY 2027 decrease incorporates reductions for higher priorities.

## Before the request year

**FY2026 plans — current year.** MAC-E and USA Blk 1: Conclude MAC-E Operational Testing (OT) concurrent with P-8A OT and IOC MAC-E in Q1/FY26. Continue software improvements for incorporation into the P-8A Training system associated with MAC-E. Conduct data gathering events, data collection and analysis for USA Blk 1. Continue risk reduction prototype engineering and development for USA Blk 1 System-of-Systems capabilities and initiate USA Blk 1 AOFP software development. Conduct MS-B to enable acceleration of program and initiate contracts for the DDVLA sonobuoy (SSQ-145) and AOFP software.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 36.7 |
| FY2026 | Enacted | 37.0 |
| FY2027 | Request | 35.9 |

> 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 0480

- APB System Qualification Test/Fleet Release. Rapid Capability Insertion (RCI)/Fleet Release for P-8A — FY2027 4.6

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibit R-2A, PE 0604261N project 0480 (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.*