Evolved SEASPARROW Missile (ESSM) Releasable Seeker Assembly Sources Sought

The Naval Sea Systems Command (NAVSEA), acting on behalf of the NATO SEASPARROW Project Office (NSPO), is seeking concept descriptions for a releasable seeker assembly for the Evolved SEASPARROW Missile (ESSM) Next Significant Variant. The seeker subsystem must be designed with an open, modular, standards-driven architecture incorporating open-source principles and must be fully releasable to all twelve consortium member nations: Australia, Belgium, Canada, Denmark, Germany, Greece, Netherlands, Norway, Portugal, Spain, Türkiye, and the United States. Key requirements include integration with a 10-inch diameter missile body for Mk 41 quad-pack compatibility and the ability to perform target search, acquisition, tracking, discrimination, and countermeasure handling across multiple threat classes and environmental conditions ranging from sea-skimming to high-altitude targets at various speeds and sea states. The Government seeks maximum rights in all technical data, software (including source code), and design artifacts under at least Government Purpose Rights per the Defense Federal Acquisition Regulation Supplement (DFARS), with emphasis on open-source deliverables wherever feasible. Responses in the form of unclassified Capabilities Statements must not exceed 15 single-sided pages and must be submitted by 27 April 2026 at 17:00 Eastern Time to Contracting Officer Megan Galloway and Contract Specialist Allie Mullin via email. The statements should address company capabilities, experience with military missile systems and international programs, export control compliance, cost estimates, development timelines, facility security clearances, physical seeker characteristics, Technology and Manufacturing Readiness Levels, software descriptions, and data rights assertions.

This is a sources sought notice for market research and planning purposes only; no solicitation is currently available, no funding is associated with this notice, and there is no obligation to contract. No set-aside designations apply to this procurement. BAE Systems is identified as a support contractor to the consortium. The notice does not specify award values or budget ranges at this preliminary stage. Responses will become Government property and will be shared with all twelve consortium member nations and BAE Systems unless respondents clearly mark submissions otherwise. Failure to respond to this sources sought notice does not preclude potential contractors from participating in any future request for proposal (RFP) if issued. Classified responses may alternatively be submitted by 20 April 2026 through SIPRNet or physical media.