Printed from https://fiscalreceipts.com/program/0603506N/ — built September 26, 2026. Every figure is citation-backed; see the page online for per-number provenance.
Surface Ship Torpedo Defense
Budget figures
FY2026 award data is a partial year — USAspending reports awards on a rolling basis, and this corpus runs through 2026-09-04. why partial FY2026 data? →
Budget trajectory
| Fiscal year | Amount |
|---|---|
| FY24 | $728.0K |
| FY25 | $4.79M |
| FY26 | $11.8M |
All series figures: R-1 TOA · PB2026
Decade view
P-1/R-1 workbook TOA basis, shown compact in $B/$M (the workbook records USD thousands); each figure cites its own President's Budget edition
The vertical scale does not start at zero: the baseline sits just below this program’s smallest year, so a low point on this line is not a small amount. Read the shape for direction and the grid below for the figures.
● actuals (line) · ○ enacted · ◇ request — gaps are editions the program is absent from, never interpolated.
| Series | FY15 | FY16 | FY17 | FY18 | FY19 | FY20 | FY21 | FY22 | FY23 | FY24 | FY25 | FY26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Actuals | $56.8M | $69.8M | $69.9M | $24.2M | $6.82M | $7.17M | $11.6M | $8.57M | $455.0K | $728.0K | ||
| Enacted | $71.3M | $87.1M | $15.0M | $7.10M | $7.24M | $11.8M | $8.86M | $473.0K | $730.0K | $4.79M | ||
| Request | $87.1M | $15.0M | $8.57M | $15.8M | $12.8M | $1.86M | $473.0K | $730.0K | $4.79M | $11.8M |
blank = series not published for this year; – = absent from that edition.
Asked vs spent: the PB2017 book requested $87.1M for FY2017; the PB2019 book reported $69.9M as actual total obligation authority — $17.2M below the request. 69.9 − 87.1 = -17.2 USD millions — the compact figures above are rounded for reading.
Program lineage
No predecessor/successor lineage was recorded for this program element — no FY-to-FY transfer into or out of this line was stated in the ingested J-books, and none was inferred from the program structure.
Description
Mission — Surface Ship Torpedo Defense
The Surface Ship Torpedo Defense (SSTD) program provides a detect-to-engage layered torpedo defense capability. The four (4) major efforts that comprise SSTD are the AN/SLQ-25 (NIXIE) system, Torpedo Warning System (TWS), the Countermeasure Anti-Torpedo (CAT), and Acoustic Device Countermeasure (Surface ADC MK2). A layered torpedo defense to protect surface ships against current and future threats. SSTD development will include a new anti-torpedo Hard Kill (HK) capability by pairing proven technology and the MK 58 Compact Rapid Attack Weapon (CRAW) with improved AN/SLQ-25E that has additional software capabilities. An upgrade to the AN/SLQ25E system using MK 58 CRAW along with an ADC launcher is detailed below as the NIXIE HK. FY 2024 funding provided minimal support to the 2 remaining CVN installations with system preservation the primary focus. FY 2024 funding also supported the beginning of a Research, Development, Test & Evaluation (RDT&E) planning efforts to develop and incorporate TWS capabilities into the AN/SLQ-25 (Nixie) via a series Tech Insertions (TIs). FY 2025 funding supported the two remaining TWS on installed systems and established development of a NIXIE follow-on Torpedo Defense Hardkill System that will incorporate the capabilities of the TWS, the Compact Rapid Attack Weapon (CRAW), and ADC MK2 MOD6/8. FY 2026 funding will support the continued development of the NIXIE Torpedo Defense Hardkill (HK) system with concentration on the development of the torpedo alertment and fire control / Torpedo Warning System (TWS) integration into the NIXIE 25E tow. FY 2026 funds will also support the development of NIXIE 25E software & winch improvements along with the development of a CRAW launcher that will be capable of launching the Anti-Torpedo Torpedo (ATT) variant of the CRAW and the ADC MK2 MOD 6/8 and MK5 (series) Acoustic Countermeasures Device (ADC). Research and development of new technologies and capabilities for torpedo defense initiated under the Future Naval Capabilities (FNC), Small Business and Innovative Research (SBIR), and/or other Research, Development, Test & Evaluation (RDT&E) initiatives are evaluated to determine their effectiveness and impact on improving ship survivability. Evaluations of new and emerging torpedo defense hardware and software in representative acoustic environments, against projected threats using both digital and hardware-in-the-loop simulations will be performed. The potential hardware and software will be considered for integration into the modular and Commercial-Off-The-Shelf (COTS)-based design of AN/SLQ-25E, which allows for future capability growth into a NIXIE HK System to outpace the threat in torpedo defense.
Mission — Surface Ship Torpedo Defense (SSTD)
ATTDS is a system of systems, comprised of the Torpedo Warning System (TWS) and the Countermeasure Anti-Torpedo Torpedo planned to develop NIXIE HK new AN/SLQ-25 capabilities in order to pace the torpedo threat. This includes integrating and testing a kinematics-based target discrimination and fire control into the AN/SLQ-25E, improving existing soft kill capabilities within AN/SLQ-25E, and adding a hard kill capability with a launcher for the Mk 58 CRAW and the (ADC) MK5 and MK 2 Mod 6/8. The FY 2026 funds support the development of a torpedo alertment and fire control capability integrated into the AN/SLQ-25E tow system in support of a torpedo defense requirements along with software improvements to specific NIXIE counter measures.
Justification
Accomplishments & Planned Programs (3)
Torpedo Warning System (TWS)
The Torpedo Warning System provides a Torpedo Detection Classification Localization capability to the surface ship. Within the torpedo alertment and fire control capability is a fire control solution that is provided to a torpedo Hardkill weapon.
SLQ-25 (NIXIE) Capability Improvements
This is a towed acoustic countermeasure that is part of the Surface Ship Torpedo Defense (SSTD). The NIXIE Systems is composed of a processing cabinet, a winch, a towed array cable, and an acoustic tow-body that is towed behind the ship to counter threat torpedoes.
Torpedo Hardkill Development
The NIXIE Hardkill (HK) System is an all-encompassing threat torpedo countermeasure system that provides a torpedo hard kill capability to the Surface Navy. The System includes all the capabilities of the AN/SLQ-25 NIXIE 25E System, the Torpedo Warning System (TWS), torpedo alertment and fire control Capability, and includes the capability to launch a Compact Rapid Attack Weapon (CRAW) as the weapon to produce the Hardkill capability. NIXIE HK system launcher will also include the ability to launch ADC Mk2 (series) devices.
Budget line items(workbook-cited)
P-1/R-1 workbook Total Obligation Authority basis (USD thousands) · PB2026.
Exhibit R-1
| Account | Org | Type | Amount |
|---|---|---|---|
| Research, Development, Test and Evaluation, Navy | N | FY24 Actuals | $728.0K |
| Research, Development, Test and Evaluation, Navy | N | FY25 Enacted | $4.79M |
| Research, Development, Test and Evaluation, Navy | N | FY25 Total | $4.79M |
| Research, Development, Test and Evaluation, Navy | N | FY26 Disc. Request | $11.8M |
| Research, Development, Test and Evaluation, Navy | N | FY26 Total | $11.8M |
Budget Details(R-2/P-40 facts)
J-book detail basis (R-2/P-40, USD millions) · PB2026 — a different accounting basis from the P-1/R-1 workbook TOA above; where the two disagree, the reconciliation strip under Budget figures shows both.
Wider than this screen — swipe the table sideways for the remaining fiscal-year columns.
| Project | All Prior Years | FY24 Actuals | FY25 Total | FY26 Base | FY26 Request |
|---|---|---|---|---|---|
| Program Element | $757.7M | $728.0K | $4.79M | $11.8M | $11.8M |
| 0225: Surface Ship Torpedo Defense (SSTD) | $757.7M | $728.0K | $4.79M | $11.8M | $11.8M |
Follow the dollar
No follow-the-dollar view — this program's awards haven't been crosswalked at high confidence (flows cover 312 of 1,938 programs). why coverage is partial? →
Related awards
Award linkage is shown for 32 of 200 profiled companies — high- and medium-confidence USAspending matches, each row labeled; medium is the weaker evidence. why partial award coverage? →
Rows marked medium rest on evidence weaker than a program-level match, and of more than one kind. An account-based row, where the award drew from the same appropriation account as this program, is an association, not evidence that this program paid for the contract. Where the evidence is instead an FPDS acquisition-program tag or a subaward description, the program is established but which of its budget lines paid is not. An announcement link a recorded review did not leave standing is medium too. Only high rows rest on the contract naming this program with a recorded review upholding it and no recorded rejection or refutation applying.
| Recipient | PIID | Confidence |
|---|---|---|
| SCIENCE APPLICATIONS INTERNATIONAL CORPORATION | N6660418F3013 | medium |
| SCIENCE APPLICATIONS INTERNATIONAL CORPORATION | N6660425FC429 | medium |
Contractor concentration
No concentration index is published for this line. This line's high-confidence links do not clear the floor for a published concentration index — at least 3 awards across 2 contractor families holding positive obligations, with positive net linked dollars. An index below that floor is a fact about the sample, not about the market. Whatever further links this line carries are medium-confidence, and what each medium evidence path does and does not establish is set out in the methodology. Both bases are in the downloadable warehouse.
Lobbying mentions
No Senate LDA lobbying filing in the tracked data mentions this program element by code or alias.
Oversight
Department-level designation (not specific to this program)
GAO lists 5 high-risk areas for DOD as a whole. That designation covers the department, not Surface Ship Torpedo Defense. No program-specific GAO finding for this line is in the ingested data. See the DOD oversight record.
Program dossier
No research dossier for this program — dossiers cover 50 of 1,938 programs, the largest fully J-book-detailed lines by FY2026 requested dollars. why no dossier here? →
Primary sources
Open any budget figure for its exact receipt. Verified line items lead with the highlighted government PDF; original spreadsheets download with their budget edition and exhibit in the filename.
Budget totals · TOA sources
FY2026 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J277
Complete workbook · unchanged saved copy. Saves as PB2026_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2017 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J245
Complete workbook · unchanged saved copy. Saves as PB2017_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2018 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J272
Complete workbook · unchanged saved copy. Saves as PB2018_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2019 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J274
Complete workbook · unchanged saved copy. Saves as PB2019_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2020 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J290
Complete workbook · unchanged saved copy. Saves as PB2020_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2021 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J303
Complete workbook · unchanged saved copy. Saves as PB2021_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2022 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J274
Complete workbook · unchanged saved copy. Saves as PB2022_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2023 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J265
Complete workbook · unchanged saved copy. Saves as PB2023_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2024 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J263
Complete workbook · unchanged saved copy. Saves as PB2024_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2025 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J264
Complete workbook · unchanged saved copy. Saves as PB2025_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
Detailed budget justification
The related TOA spreadsheets above use a different accounting basis from R-2/P-40 detail. Their amounts are not assumed to match these detailed sources.
RDTEN BA1-3 Book · www.secnav.navy.mil