SOURCES SOUGHT VIRGINIA & OHIO-CLASS LARGE VERTICAL ARRAY (LVA) BACK-FIT INSTALLATION

Sources Sought Notice

This notice is issued by the Naval Sea Systems Command (NAVSEA) to conduct market research for potential sources capable of performing Large Vertical Array (LVA) back-fit installations on in-service U.S. Navy submarines. The results will inform the government's acquisition strategy, including feasibility of competitive procurement, small business set-asides, and potential for a Multiple Award Contract (MAC).

The work involves acting as an Alteration Installation Team (AIT) for LVA installations, primarily during scheduled submarine availability periods at public naval shipyards. The scope does not include nuclear power requirements. The government will provide the array, fixtures, components, and technical data as Government Furnished Material (GFM) and Information (GFI).

Key AIT responsibilities include:

• Comprehensive project management and scheduling.
• Structural modifications to submarine hulls (cutting, welding, fitting).
• Handling and installation of large, heavy LVA components.
• Performing SUBSAFE and Level I material work with quality control.
• Installation of polymer materials, including VIRGINIA-class Special Hull Treatment (SHT).
• Complex cabling (electrical and fiber optic) installation.
• Hazardous materials (HAZMAT) handling, storage, and disposal.
• Post-installation testing and support for government certification.
• Developing work packages, test procedures, and reports.
• Interfacing with Lead Maintenance Activity (LMA) and shipyard personnel.

Work locations include Portsmouth, Pearl Harbor, Puget Sound Naval Shipyards, and Trident Refit Facilities at Bangor and Kings Bay. A SECRET facility clearance and personnel clearances are required.

GFI, including SHIPALT/TRID drawings, technical specifications, and OEM manuals, will be provided to interested parties who affirm their ability to safeguard Controlled Unclassified Information (CUI) in accordance with DFARS Clause 252.204-7012 and NIST SP 800-171. Interested parties must provide their CAGE code via email to the POC to receive the GFI package via DOD SAFE.

An Industry Day is scheduled for April 7, 2026, to provide further information and answer questions. It will be hybrid (in-person and virtual). Registration is required by April 2, 2026, with a limit of two attendees per source. Questions can be submitted in advance via email by April 2, 2026, or during the event. All questions and answers will be published.

Interested parties must submit a white paper (capability statement) not exceeding 15 pages, including:

• Company Information (Name, Address, CAGE, DUNS, POC, Facility Clearance, FSO).
• Business Size under NAICS 336611.
• Capability & Experience (prime contractor experience for submarine AIT installations, SUBSAFE/Level I work, SHT/MIP material installation, LMA integration, SUBSAFE/SHT approach if lacking direct experience).
• Workforce & Staffing (recruitment, training, retention, staffing levels near shipyards).
• Supply Chain Management processes.
• Past Performance (2-3 relevant projects from the last 7 years).
• Special Contract Requirements.

Responses are due no later than 4:00 PM EST on April 23, 2026, submitted electronically via DOD SAFE to the points of contact.

• This is a Sources Sought notice for market research purposes only; it is NOT a Request for Proposal (RFP).
• The government is not obligated to pay for any costs associated with responses.
• Responses do not guarantee inclusion in future solicitations.
• A future solicitation, if issued, will be announced separately on PIEE and SAM.gov.

Sources Sought Notice

This notice is issued by the Naval Sea Systems Command (NAVSEA) to conduct market research for potential sources capable of supporting the installation of the Large Vertical Array (LVA) on in-service U.S. Navy submarines. The LVA is a submarine hull-mounted acoustic array installed as part of a major ship alteration (SHIPALT). The results will inform the government's acquisition strategy, including feasibility of competitive procurement, small business set-asides, and potential for a Multiple Award Contract (MAC).

The government is seeking qualified sources to act as the Alteration Installation Team (AIT) for LVA back-fit installations. Work will primarily occur during scheduled submarine availability periods at public naval shipyards. The scope does not involve nuclear power requirements.

Key AIT responsibilities include:

• Comprehensive project management and Integrated Master Schedule (IMS) development.
• Structural modifications to submarine hulls (cutting, welding, fitting).
• Handling and installation of large, heavy LVA components.
• Performing SUBSAFE and Level I material work with auditable quality control.
• Installation of Special Hull Treatment (SHT) materials and similar polymers.
• Running and connecting complex cabling (electrical and fiber optic).
• Handling and disposal of hazardous materials (HAZMAT).
• Post-installation testing and support for government-led certification.
• Developing work packages, test procedures, and reports.
• Interfacing with Lead Maintenance Activity (LMA) and shipyard personnel.

Work locations include Portsmouth Naval Shipyard (PNSY), Pearl Harbor Naval Shipyard (PHNSY), Trident Refit Facility (TRF) Bangor, and TRF Kings Bay. A SECRET facility clearance and personnel clearances are required.

Technical data, including SHIPALT/TRID drawings and NAVSEA Technical Specification TS9090-310H, will be provided to interested parties. Responders must have systems and controls to safeguard Controlled Unclassified Information (CUI) per DFARS Clause 252.204-7012 and NIST SP 800-171. To receive GFI, companies must email their CAGE code and affirmation of CUI protection capability to the point of contact.

An Industry Day is scheduled for April 7, 2026, in Washington D.C. and virtually. Registration is required by April 2, 2026. The event will include a general session and optional breakout sessions. Questions can be submitted in advance or during the event.

Interested parties should submit a white paper (capability statement) not exceeding 15 pages by April 16, 2026. The white paper must include:

• Company Information (Name, Address, CAGE, DUNS, POC, Facility Clearance, FSO, Classified Mailing Address).

• Business Size (under NAICS 336611).

• Capability & Experience (AIT installations, SUBSAFE/Level I work, SHT/MIP installation, LMA integration, SUBSAFE/SHT approach if lacking direct experience, workforce, supply chain management).

• Past Performance (2-3 relevant projects).

• Special Contract Requirements.

• This is a Sources Sought notice for market research only; it is NOT a Request for Proposal (RFP).

• The government will not pay for information submitted.

• Responses are voluntary.

• The government may not respond to specific questions.

• All documentation submitted becomes government property.

• A future solicitation, if issued, will be announced separately on SAM.gov and PIEE.

• Responding to this notice does not guarantee inclusion on a bidders list or receipt of a solicitation.

Sources Sought Notice

This notice is issued by the Naval Sea Systems Command (NAVSEA) for market research to identify potential sources for the installation of the Large Vertical Array (LVA) on in-service U.S. Navy submarines. The LVA is a hull-mounted acoustic array installed as part of a major ship alteration (SHIPALT). The results will inform the Government's acquisition strategy, including feasibility of competitive procurement, small business set-asides, and potential for a Multiple Award Contract (MAC).

The Government seeks qualified sources to act as the Alteration Installation Team (AIT) for LVA back-fit installations, primarily during scheduled submarine availability periods at public naval shipyards. The scope does not involve nuclear power requirements. The Government will provide the array, fixtures, components, and technical data (SHIPALT/TRID drawings) as Government Furnished Material (GFM) and Information (GFI).

Key AIT responsibilities include:

• Project management (Integrated Master Schedule, cost/schedule reports)
• Structural modifications (cutting, welding, fitting)
• Handling and installation of LVA components
• SUBSAFE and Level I material work with quality control records
• Cabling installation (electrical and fiber optic)
• Hazardous material (HAZMAT) handling and disposal
• Post-installation testing and support for Government certification
• Developing work packages, test procedures, and reports
• Interfacing with Lead Maintenance Activity (LMA) and shipyard personnel

Work locations include Portsmouth Naval Shipyard (PNSY), Pearl Harbor Naval Shipyard (PHNSY), Trident Refit Facility (TRF) Bangor, and Trident Refit Facility (TRF) Kings Bay. A SECRET facility clearance and personnel clearances are required.

Technical data (SHIPALT/TRID drawings) will be provided to interested parties. Responders must have systems and controls to safeguard Controlled Unclassified Information (CUI) per DFARS 252.204-7012 and NIST SP 800-171. To receive GFI, companies must provide their CAGE code and affirmation of CUI protection capability via email.

An Industry Day is scheduled for April 7, 2026, hybrid (in-person and virtual). Registration is required by April 2, 2026. The event will include a general session and optional 20-minute breakout sessions. Presentations and discussions will be at the CUI level.

Interested parties should submit a white paper (capability statement) by April 16, 2026, 4:00 PM EST. The white paper (max 15 pages) must include:

• Company Information (Name, Address, CAGE, DUNS, POC, Facility Clearance, FSO, Classified Mailing Info)
• Business Size (under NAICS 336611)
• Capability & Experience (AIT installations, SUBSAFE/Level I work, LMA integration, SUBSAFE approach if not certified, workforce, supply chain management)
• Past Performance (2-3 relevant projects from last 7 years)
• Special Contract Requirements

Responses and questions are due by April 16, 2026, submitted via DOD SAFE. This is for informational purposes only; no contract will be awarded based on this notice.

• This is a market research tool, not a solicitation or commitment to contract.
• No costs incurred in response will be reimbursed.
• All submitted documentation becomes Government property.
• Future solicitations will be posted separately on PIEE/SAM.gov.