R-2A Activity · President's Budget PB2027

Undersea Weaponry

FY2027 Request
$10.9M
▼ 21% vs FY2026
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This activity requests $10.9M in FY2027, 21% of project 0000, down 21% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$10.9M
▼ 21% vs FY2026
FY2026 Enacted
$13.7M
▼ 4.4% vs FY2025
FY2025 Actual
$14.4M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 0000 of PE 0602747N. This is the budget justification's own description of work that has not happened yet — the one thing no other level of the budget carries.

FY2027 planned work

- Continue applied research related to critical Science and Technology (S&T) for Rapid-Reaction Undersea Weapons and Counter-Measures, High-Speed Vehicle Technology, Undersea Warheads Technology, RPG-of-the-Sea and Air-Independent Power and Energy. - Continue applied research to explore additional transition opportunities for technologies developed under the High-Speed Vehicle Technology. - Continue expanding efforts associated with sensing and warhead testing. - Continue basic and applied research in directed energy for undersea applications, and undersea effects for deep sea and seabed warfare. - Continue sensing, target updating, and propulsion technologies for long endurance weapons. - Continue applied research in coordinated networks of weapons and sensors and new weapons concepts. -Initiate applied science for seabed warfare technologies. - Initiate investigation of free-space and fiber contained optical transport solutions and associated technology developments - Initiate measurement and model propagation in highly dynamic environment to enable performance prediction in support of validation of atmospheric prediction models - Initiate investigation of novel window materials and anti-reflection approaches and environmental impacts - Initiate exploration of novel enclosure materials to meet performance while addressing environmental and operational exposure

FY2026 to FY2027 change

Funding decrease from FY2026 to FY2027 is due to reduced development across multiple Undersea Weaponry projects, including applied science for seabed warfare technologies.

Before the request year

FY2026: the year under way

Prior-year accomplishments and current-year plans from the same exhibit. Context for the FY2027 plan, not a series — an activity partitions its project exactly in the request year, but can under-cover it in earlier years.

FY2026 plans — current year

- Continue applied research related to critical Science and Technology (S&T) for Rapid-Reaction Undersea Weapons and Counter-Measures, High-Speed Vehicle Technology, Undersea Warheads Technology, RPG-of-the-Sea and Air-Independent Power and Energy. - Continue applied research to explore additional transition opportunities for technologies developed under the High-Speed Vehicle Technology. - Continue expanding efforts associated with sensing and warhead testing. - Complete related field activities under the Torpedo Field/Lab Experimentation Program. - Initiate basic and applied research in directed energy for undersea applications, and undersea effects for deep sea and seabed warfare. - Initiate sensing, target updating, and propulsion technologies for long endurance weapons. - Initiate applied research in coordinated networks of weapons and sensors and new weapons concepts.

Money

Three years, and no five-year plan

An R-2A activity publishes the prior year, the current year and the budget year. The FYDP outyears exist at project and program-element level and are deliberately absent here rather than inferred. Estimate types are colored and never summed into one figure.

014.4FY25ACTUAL13.7FY26ENACTED10.9FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual14.4
FY2026Enacted13.7
FY2027Request10.9

This activity is 21% of project 0000's FY2027 request and 21% of PE 0602747N's. In the request year the activities under a project sum to it exactly; in the current year they under-cover it in about 9% of cases, so an activity's delta can legitimately exceed its parent's and the two must not be compared row to row.

Where this sits

5 activities in project 0000

Every R-2A line of this project, largest FY2027 request first. Linked where the activity has enough of its own narrative to carry a page; the rest are shown in full on the project page.

Anti-Submarine Warfare (ASW) Distributed Search$18.8M ▼ 20%Anti-Submarine Warfare (ASW) Surveillance$18.8M ▼ 11%
Undersea Weaponry — this activity$10.9M ▼ 21%
Anti-Submarine Warfare (ASW) Precision Localization$2.9M ▼ 17%
Marine Biology$1.1M ▼ 56%
Source
FY2027 Department of the Navy RDT&E Budget Justification · Exhibit R-2A · PE 0602747N, project 0000 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0602747N/0000/a4.md · MCP mcp.hitchintel.combudget_get_activity