SSN Combat Control Systems

The SSN Combat Control Systems (Budget Line Item 5420) is a critical Navy procurement program focused on equipping and modernizing the combat control systems across all U.S. Navy submarine platforms. The primary system, AN/BYG-1, integrates tactical control, weapon/payload control, and Tactical Local Area Network (TacLAN) functions. The overarching goals are to maintain technological superiority, ensure interoperability within the Submarine Warfare Federated Tactical Systems (SWFTS) family, and address obsolescence and cybersecurity challenges through regular hardware and software upgrades.

VB011 - Combat Systems Technology Refresh / Legacy Integration funds engineering changes and ordnance alterations to address fleet-reported issues with fielded AN/BYG-1 systems. This line supports procurement of Weapons Launch Systems, training systems such as the Multi-tube Weapon Simulator (MTWS), and Onboard Team Trainer. It also provides system engineering for TacLAN and cybersecurity authorization and accreditation, as well as procurement of Commercial Off-The-Shelf (COTS) infrastructure hardware. The objective is to enable rapid delivery and updating of systems, improve cyber resilience, and position SWFTS to leverage emerging technologies like Artificial Intelligence and Machine Learning.

VB034 - Submarine Combat Control System Modernization Program supports hardware and software upgrades for the AN/BYG-1 system across all submarine classes, including SSBN OHIO, SSN21, SSN688, SSN774, and the new COLUMBIA class. This includes procurement and installation of Tech Insertion (TI) kits, which are annual hardware refreshes to address obsolescence and provide a baseline for future upgrades. The program ensures that combat control systems remain compatible with other SWFTS components, such as sonar and imaging systems. Installations are synchronized across the fleet to maintain operational readiness.

VB800 - Electronic Charting Display Information System (ECDIS) provides for the procurement and integration of the Navy ECDIS across all submarine platforms. The goal is to enhance safe navigation by correcting deficiencies and introducing new capabilities. The Program Executive Office for Undersea Warfare Systems (PEO UWS) is responsible for acquisition, integration, testing, certification, and fielding of ECDIS, ensuring that all submarine classes maintain up-to-date electronic navigation capabilities.

VB995 - Production Engineering and Initial Training funds production and logistics support, asset management, contract specification preparation, and performance monitoring. It also supports the development of initial training curricula, training management materials, and exercise control groups for the fleet. The objective is to reduce program risk, ensure efficient testing and fielding of new systems, and provide the necessary training to operators and maintainers.

VB997 - SSGN Sustaining Support provides funding for the life-cycle operational support of SSGN Attack Weapons Systems on OHIO-class SSGNs. This includes technical refreshes of critical components, cybersecurity maintenance, and updates to training and maintenance systems. The objective is to ensure continued operational capability and cybersecurity compliance for these strategic platforms. Funding for this line ends in FY25 as the necessary refreshes are completed.

VB700 - Payload Procurement covers the procurement of payloads, including Unmanned Aerial System (UAS) vehicles for integration, verification, and validation. This line item supports the integration and testing of both horizontally and vertically deployed payloads. Starting in FY25, funding for submarine-launched UAS is transferred to a different line item, reflecting a shift in program management responsibilities.