# Navigation/Id System — Program Element 0604777N

**Program element:** 0604777N  
**Component:** U.S. Navy  
**Appropriation:** 1319 — RDT&E, Navy  
**Budget Activity:** 5 — System Development & Demonstration  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604777N

## Summary

U.S. Navy requests $3.4M in FY2027, sustained across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators funded it in full. NAWCAD leads the industry work.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 42.9 |
| FY2026 | Enacted | 3.7 |
| FY2027 | Request | 3.4 |
| FY2028 | Outyear | 4.4 |
| FY2029 | Outyear | 4.3 |
| FY2030 | Outyear | 4.2 |
| FY2031 | Outyear | 4.3 |

> Estimate types are not summed — the profile mixes actuals, enacted law, the request, and outyear projections.

## Congressional marks (FY2027)

| Stage | Marked ($M) | Change ($M) |
|---|---|---|
| Request | 3.4 | — |
| House NDAA (HASC) | 3.4 | +0.0 |
| Senate NDAA (SASC) | 3.4 | +0.0 |
| House Approps (HAC-D) | 3.4 | +0.0 |

> FY2027 NDAA authorization marks, as of 2026-07-27. Not appropriations or final law.

## Projects (3)

| Project | Title | FY2025 actual | FY2026 enacted | FY2027 request | Move |
|---|---|---|---|---|---|
| 1253 | Combat Ident System | 2.1 | 1.8 | 1.9 | +6% |
| 0676 | Improve ID Development | 3.2 | 2.0 | 1.5 | −22% |
| 0253 | Nav & Electro-Optical Supt | 37.7 | 0.0 | 0.0 | — |

> Projects are the summable leaves: the program element total is their sum, never added to it.

### Project 1253 — Combat Ident System

MARK (MK) XIIA Mode 5 provides secure cooperative combat identification via Identification Friend or Foe (IFF). Mode 5 was developed in cooperation with North Atlantic Treaty Organization, with the DoW implementation governed by AIMS 03-1000A, AIMS 03-1000B and USN requirements defined in ORD # 577-06-01. IFF product improvements are designed to be installed through obsolescence mitigations, upgrades, technical refreshes, and deficiency correction studies, which in turn become engineering changes to IFF interrogators and transponders and their associated cryptographic material. Standards governed by AIMS 17-1000 and Crypto Modernization (CM) are required to be incorporated in future engineering changes. The Navy MK XIIA Mode 5 program was approved for entry in Systems Development and Demonstration phase in August 2003 and into the Production and Deployment Phase and Low Rate Initial Production in July 2006, and Full Rate Production July 2012. The Navy Mode 5 program achieved Initial Operational Capability (IOC) in 2012 in accordance with the ORD. Mode 5 capable equipment was fielded in USN/USMC platforms in accordance with Joint Requirements Oversight Council Memorandums (047-07, 122-08 and 108-13) in support of Joint Mode 5 IOC in 2014 and Joint Full Operational Capability in FY 2020. In order to maintain cooperative encrypted Combat Identification (CID) capabilities across the fleet, sustainment and new development efforts must continue into the foreseeable future. Studies for future leading-edge non-cooperative CID technologies are being investigated. RDTE articles include Mode 5 cryptographic modules and associated hardware and software changes for IFF interrogators and transponders, including, but not limited to: AN/APX-118/123, AN/APX-119, AN/APX-111, RT-2087/ZPX, and all associated test and support equipment. RDTE units are required for government and contractor labs to support aircraft and ship integrations, test sites, test aircraft, and unmanned aircraft systems.

**Named R-3 performers** (share of this project's FY2027 R-3 total, so they need not reach 100%)**:** NAWCAD (1.9, 100%).

| Activity (R-2A) | FY2025 | FY2026 | FY2027 |
|---|---|---|---|
| Mode 5 Systems Engineering and Integrated Logistics Support (ILS) | 0.8 | 0.8 | 0.9 |
| Mark XIIA Upgrade Developmental Test & Operational Test | 1.3 | 0.9 | 1.0 |

> R-2A activities carry the prior, current and budget year only — no five-year plan. Coverage is partial, so count them, never total them.

### Project 0676 — Improve ID Development

Reliable and secure navigation and positive identification (ID) systems are essential elements of battle management in the naval environment. In addition to providing platform identification for weapons employment, the Navy requires secure, jam resistant Identification Friend or Foe (IFF) systems for battle group air defense management and Air Traffic Control. The Improved ID Development project addresses the Mark XIIA Mode 5 and Mode Select (S) upgrades to the existing AN/UPX-29(V) Mark XII family of systems that is Joint and North Atlantic Treaty Organization interoperable, as well as modernization of the DDG 1000 Zumwalt Class IFF Sensor Suite. The AN/UPX-29(V) Interrogator System is comprised of the Interrogator Set AN/UPX-24(V), OE-120()/UPX Antenna Group, and Mark XII or Mark XIIA equipment including but not limited to AN/UPX-41(C), AN/UPX-45(C), or AN/UPX-50(C) Digital Interrogators (DI) and associated equipment. The DDG 1000 IFF Sensor Suite is comprised of three electronically scanned array (ESA) antennas, one UPX-42(C) Interrogator, and three RT-1912(C)/APX Transponders. Additionally, the Improved ID Development project may include product improvements designed to be installed through upgrade and deficiency correction studies, which in turn become engineering changes to other IFF solutions.

**Named R-3 performers** (share of this project's FY2027 R-3 total, so they need not reach 100%)**:** NAWCAD (1.5, 98%).

| Activity (R-2A) | FY2025 | FY2026 | FY2027 |
|---|---|---|---|
| Mark XIIA Mode 5 and Mode S Improvement for AN/UPX-29(V) | 0.6 | 0.6 | 0.6 |
| AN/UPX-29(V) Management Support | 0.7 | 0.8 | 0.4 |
| UPX-36 Engineering Change Proposal - Mode 5 Capable | 1.2 | 0.6 | 0.5 |
| Radar Track Discriminator System (RTDS) UPX-34A ECP Part I | 0.6 | 0.0 | 0.0 |

> R-2A activities carry the prior, current and budget year only — no five-year plan. Coverage is partial, so count them, never total them.

### Project 0253 — Nav & Electro-Optical Supt

AN/BVY-1 Integrated Submarine Imaging System (ISIS) adds new capabilities via the Technical Insertion (TI)/Advanced Processing Build (APB) process, while working with partner Submarine Warfare Federated Tactical System (SWFTS) programs to realign software development according to Development Security Operations (DevSecOps) software processes. The Navy is pursuing a cloud-enabled containerization architecture transformation across SWFTS (PE 0604503N Project 0219, Project 0236, Project 0253, and Project 0775) to increase operational agility and resiliency at the speed of relevance. The Legacy Mast Improvements Program specifically focuses on incorporating mature technologies and design improvements into legacy masts; this effort provides substantial improvements to the large inventory of photonics and imaging masts. Both programs ensure that submarines can conduct operations in high intensity littoral environments, intelligence gathering, real time imagery, and support the safe and effective employment of surveillance and weapons systems. The Navigation and Electro-Optical (E-O) program enables littoral operations by procuring ISIS, the production of low-profile photonics masts (Low Profile Photonics Mast (LPPM), Type 20, and Type 24), the maintenance and sustainment of periscope and legacy photonic masts, the production and sustainment of Universal Modular Mast Systems and Dip Loops, and the development of the ISIS inboard processing components of the Submarine Warfare Federated Tactical System (SWFTS). The Department of the Navy established the ISIS to rapidly field the Type 18 periscope, RADAR rangefinder, Type 8 Mod 4 Infrared (IR) periscope system, and integrate existing periscope imagery systems into a single imaging system for installation on board SSN 688 class and SEA WOLF class submarines. The ISIS baseline also includes the Imaging System with the Photonics mast (PM) and all configurations of low-profile photonics masts onboard VIRGINIA and Photonics Mast Variant (PMV) onboard SSGN class submarines and ISIS on SSBN class submarines. The PM, LPPM, and PMV design exploit a wide portion of the electro-magnetic spectrum through advanced E-O and thermal imaging and Electronic Warfare Support (ES)/communications intercept.

| Activity (R-2A) | FY2025 | FY2026 | FY2027 |
|---|---|---|---|
| ISIS and Photonics common software and hardware capabilities development and obsolescence | 27.9 | 0.0 | 0.0 |
| Type 24 Mast | 9.0 | 0.0 | 0.0 |
| Imaging Systems Test Efforts | 0.8 | 0.0 | 0.0 |

> R-2A activities carry the prior, current and budget year only — no five-year plan. Coverage is partial, so count them, never total them.

## Where the FY2027 request goes

| Category | Share | $M |
|---|---|---|
| Industry primes | 99% | 3.4 |
| Other / unspecified | 1.0% | 0.0 |

**Top named industry performers:** NAWCAD ($3.4M, 99%).

> R-3 exhibit contract funding, not USAspending obligations.

## Mission & acquisition strategy

AN/BVY-1 Integrated Submarine Imaging System (ISIS) adds new capabilities via the Technical Insertion (TI)/Advanced Processing Build (APB) process, while working with partner Submarine Warfare Federated Tactical System (SWFTS) programs to realign software development according to Development Security Operations (DevSecOps) software processes. The Navy is pursuing a cloud-enabled containerization architecture transformation across SWFTS (PE 0604503N Project 0219, Project 0236, Project 0253, and Project 0775) to increase operational agility and resiliency at the speed of relevance.

The Single Acquisition Management Plan (SAMP) for the ISIS Program TI-20/22/24 with Mast is approved 07 Jul 2017. The Program Streamlined Acquisition Plan with Services (PSTRAP-M) for ISIS TI-26/28/30 is approved 08 Mar 2024. The Acquisition Program Baseline Agreement (APBA) for ISIS Program TI-26 Increment with APB-25 & APB-27 is approved 01 May 2024. The ISIS will provide mission critical, all weather, visual, and electronic search, digital image management, indication, warning, and platform architecture interface capabilities for SSN 688, SSN 21, SSN 774, SSN 826 and SSGN class submarines.

## Related program elements

- [0604503N — Submarine SWFTS Modernization](https://hitchintel.com/programs/0604503N) (Navy)
- [0604562N — Submarine Tactical Warfare System](https://hitchintel.com/programs/0604562N) (Navy)
- [0901218F — Civilian Compensation Program](https://hitchintel.com/programs/0901218F) (Air Force)
- [0607101A — Combating Weapons of Mass Destruction (CWMD) Product Improvement](https://hitchintel.com/programs/0607101A) (Army)

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-3, PE 0604777N (PB PB2027); FY2027 NDAA committee marks (as of 2026-07-27).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604777N")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*