Submarine Tactical Warfare System (PE 0604562N) · Navy

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Published budget signals for this program, with links to receipts.

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What it is

Submarine Tactical Warfare System (0604562N) is a Navy research & development line funded in the Research, Development, Test and Evaluation, Navy account. Its J-book detail breaks the line into 1 project.

What changed

No FY25→26 comparison — endpoints unavailable or on different bases.

Who gets it

No single contractor is published as this line's leader. 1 linked award record is listed below. 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. Why the crosswalk is partial.

Budget figures

FY24 Actuals

$69.7MR-1 TOA · PB2026

FY25 Total

$72.0MR-1 TOA · PB2026

FY26 Request

$0J-book detail · PB2026

FY25→26 Change

No comparison: endpoints unavailable or on different bases

No FY2026 R-1/P-1 request line for this program element. The FY2026 President's Budget request workbook carries no FY2026 line for it; its last workbook figure is FY2025. The PB2026 J-book detail below does carry an FY2026 row for this line, recorded as zero. A workbook blank and a documented zero are different records, and this page shows both. An absent line is not by itself an ending — PB2026 renumbered program elements at scale across the services and defense agencies, so this work may continue under a different number. Where this line's funding went is recorded under Program Lineage below.

Data coverage

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

The program's 3 summary figures for FY24 to FY26, plotted in fiscal-year order: this line ends lower than it starts. The points are the summary cards above, not a separate derivation; the table beside the chart carries each figure with its own citation.

Budget trajectory: one row per fiscal year, carrying the summary figure the sparkline plots. Every figure opens its own citation.
Fiscal year	Amount
FY24	$69.7MR-1 TOA · PB2026
FY25	$72.0MR-1 TOA · PB2026
FY26	$0J-book detail · 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

11 fiscal years of this program as published (FY2015–FY2025): a line through the actuals (filled dots), with the enacted (hollow circles) and request (diamonds) markers each edition reported. Read it for direction, not for precision — this program's actuals line rises across the span. The grid below is the same data as text, one cited figure per cell.

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.

Decade series values by fiscal year and President's Budget edition: one row per series (actuals, enacted, request), one column per fiscal year. Every figure opens its own citation.
Series	FY15	FY16	FY17	FY18	FY19	FY20	FY21	FY22	FY23	FY24	FY25
Actuals	$37.8M	$51.1M	$50.1M	$44.7M	$77.5M	$60.8M	$69.4M	$60.8M	$57.5M	$69.7M
Enacted		$52.7M	$43.2M	$50.9M	$80.3M	$62.4M	$71.1M	$62.1M	$58.7M	$71.5M	$72.0M
Request			$43.2M	$50.9M	$60.8M	$62.4M	$63.9M	$62.1M	$58.7M	$71.5M	$72.0M

blank = series not published for this year; – = absent from that edition.

Asked vs spent: the PB2019 book requested $60.8M for FY2019; the PB2021 book reported $77.5M as actual total obligation authority — $16.7M above the request. 77.5 − 60.8 = 16.7 USD millions — the compact figures above are rounded for reading.

Program lineage

This program

0604562N — Submarine Tactical Warfare System

Successors (funding flowed out)

realigned to · per FY2026 J-book
0101226N — Submarine Acoustic Warfare Development
show sentence
“Submarine Launch Unmanned Aerial System (SLUAS) funds transfer from RDTEN PE 0604562N beginning in FY25.”
realigned to · per FY2026 J-book · BA4
0604503N — Submarine SWFTS Modernization
show sentence
“Effective FY 2026, Project 0236 is moving from PE 0604562N to PE 0604503N as part of the PE/BLI consolidation effort in the DoD Implementation Plan from the Commission on Planning, Programming, Budgeting, and Execution (PPBE) Reform Final Report in an effort to rapidly increase Navy Lethality in the Submarine and Surface Fleet.”

Family Funding Line

Funding chain: 0604562N — Submarine Tactical Warfare System

FY2017$43.2M
FY2018$50.9M
FY2019$60.8M
FY2020$62.4M
FY2021$63.9M
FY2022$62.1M
FY2023$58.7M
FY2024$71.5M
FY2025$72.0M

This family branches — the funding line above is shown for the 1:1 chain only. Branch arms (splits or merges) are not summed into this series.

See this family in the lineage map →

Description

Mission — Submarine Tactical Warfare System

Effective FY 2026, Project 0236 is moving from PE 0604562N to PE 0604503N as part of the PE/BLI consolidation effort in the DoD Implementation Plan from the Commission on Planning, Programming, Budgeting, and Execution (PPBE) Reform Final Report in an effort to rapidly increase Navy Lethality in the Submarine and Surface Fleet. The AN/BYG-1 is the combat control system common across all submarine platforms which incorporates tactical control, weapon/payload control and Tactical Local Area Network (TacLAN) functions into a single procurement program. AN/BYG-1 allows the submarine to rapidly update the ship-safety tactical picture, integrates the common tactical picture into the battlegroup, improves torpedo interfaces, and provides tactical TOMAHAWK, Harpoon, and future payload capability. AN/BYG-1 systems will be continuously updated with hardware enhancements to address Commercial Off The Shelf (COTS) obsolescence and provide capability improvements through software upgrades. Hardware updates are referred to as Tech Insertion (TI) kits and are differentiated by year of development (i.e. TI-22, TI-24, TI-26, etc.). The TI upgrades provide the baseline for all future AN/BYG-1 procurements. AN/BYG-1 is part of the Submarine Warfare Federated Tactical Systems (SWFTS), a family of interdependent systems that conduct cooperative system development and installations. Project Unit 0236: This program develops Commercial-Off-The-Shelf (COTS) based software and hardware upgrades for AN/BYG-1, the Multi-tube Weapons Simulator (MTWS), and the Common Weapon Launcher (CWL) in order to integrate improved tactical and payload control capabilities for all submarine classes. Provides funding for the development of Legacy Launchers; MTWS; Information Assurance (IA) system; Onboard Team Trainer (OBTT); and Common Infrastructure Services (CIS) subsystem. This includes integration of OBTT - Master Controller (OBTT - MC) & Inter-Subsystem Monitoring Tool (ISMT) efforts as well as other common services within SWFTS.

Mission — SSN Comb Cont Sys Imprvmnt (ENG)

The AN/BYG-1 is the combat control system common across all submarine platforms which incorporates tactical control, weapon/payload control and Tactical Local Area Network (TacLAN) functions into a single procurement program. AN/BYG-1 allows the submarine to rapidly update the ship-safety tactical picture, integrates the common tactical picture into the battlegroup, improves torpedo interfaces, and provides tactical TOMAHAWK, Harpoon, and future payload capability. AN/BYG-1 systems will be continuously updated with hardware enhancements to address Commercial Off The Shelf (COTS) obsolescence and provide capability improvements through software upgrades. Hardware updates are referred to as Tech Insertion (TI) kits and are differentiated by year of development (i.e. TI-22, TI-24, TI-26, etc.). The TI upgrades provide the baseline for all future AN/BYG-1 procurements. AN/BYG-1 is part of the Submarine Warfare Federated Tactical Systems (SWFTS), a family of interdependent systems that conduct cooperative system development and installations. Project Unit 0236: This program develops Commercial-Off-The-Shelf (COTS) based software and hardware upgrades for AN/BYG-1, the Multi-tube Weapons Simulator (MTWS), and the Common Weapon Launcher (CWL) in order to integrate improved tactical and payload control capabilities for all submarine classes. Provides funding for the development of Legacy Launchers; MTWS; Information Assurance system; Onboard Team Trainer (OBTT); and Common Infrastructure Services (CIS) subsystem. This includes integration of OBTT - Master Controller (OBTT - MC) & Inter-Subsystem Monitoring Tool (ISMT) efforts as well as other common services within SWFTS. FY26 continues funding for development of TI-26 and completion of TI-24. Cybersecurity efforts continue to evolve in future baselines to keep pace with the threat. Integration efforts for additional submarine payloads including MK48 ADCAP variants APB 6, APB 7 and APB 8 continue in FY26.

Justification

No accomplishments or planned-program narratives in this line's J-book detail — some exhibits carry figures without per-project prose.

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	$69.7M
Research, Development, Test and Evaluation, Navy	N	FY25 Enacted	$72.0M
Research, Development, Test and Evaluation, Navy	N	FY25 Total	$72.0M

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	$919.4M	$69.7M	$72.0M	$0	$0
0236: SSN Comb Cont Sys Imprvmnt (ENG)	$919.4M	$69.7M	$72.0M	$0	$0

Follow the dollar

Appropriation → program element → top high-confidence awards → recipient families → congressional districts.

Follow-the-dollar covers 312 of 1,938 programs — only high-confidence budget→award links are shown. why coverage is partial? →

The program's money traced left to right: the N appropriation, program element 0604562N (Submarine Tactical Warfare System), its 1 largest high-confidence awards, the 1 recipient family behind them, and the 1 congressional district the work is recorded in. Read it for concentration — how few families and districts the awards run through. Amounts inside the diagram are illustrative per-award transaction sums; the table below carries the cited per-district obligations.

The diagram illustrates the cited table below — amounts shown in the diagram are transaction sums per award (no citation chips); the per-district obligations in the table cite USAspending queries.

The diagram as text: one row per congressional district in the diagram, the recipient families shown there, and that district's cited program obligations.
District	Recipients in diagram	Program obligations
VA-10	GENERAL DYNAMICS MISSION SYST…	$67.7M

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? →

Recipient	PIID	Confidence
GENERAL DYNAMICS MISSION SYSTEMS, INC.	N0002416C6246	high

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

22 mentions from the Senate LDA disclosure database.

BAE SYSTEMS INCSubmarine|Warfare2026matched 2+ title words

National Defense Authorization Act, 2027 (HR 8800/S 4784); provisions regarding R&D - Navy, US Marine Corps, Air…

Submarine Tactical Warfare System

Budget figures

Budget trajectory

Decade view

Program lineage

Description

Mission — Submarine Tactical Warfare System source

Mission — SSN Comb Cont Sys Imprvmnt (ENG) source

Justification

Budget line items(workbook-cited)

Budget Details(R-2/P-40 facts)

Follow the dollar

Related awards

Contractor concentration

Lobbying mentions

Oversight

Program dossier

Primary sources

Budget totals · TOA sources

Detailed budget justification

Mission — Submarine Tactical Warfare System

Mission — SSN Comb Cont Sys Imprvmnt (ENG)