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Program · United States · Missile Defense Agency

Sea-Based X-Band Radar (SBX)

Sea-Based X-Band Radar (SBX) · Fielded · Missile Defense Agency

Updated
FieldedMissile Defense Agency
Awarded
—
Across linked awards

Cost to the Government

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Program totals · 1

  • Annual SBX RDT&E appropriation · mixed scopeR-1 PE0603907C Sea Based X-Band Radar. Annual appropriation scope, not lifetime development cost. FY2026 includes the listed reconciliation spend plan; FY2027 includes discretionary and mandatory requests where present. Budget execution and requests are distinct measures. The SBX appropriation also funds operations and support; it is not pure development spending.
    FY2027 R-1: Research, Development, Test & Evaluation Department of Defense Comptroller · Apr 2026 · figure FY2027 total request · PB2027
    $274.204M / yrNominal $; source budget basis

Unit costs · 1

  • Comparable unit priceNo comparable standalone unit price was established; package or contract totals are shown separately.
    Source not recorded
    Not established

Quantities · 2

  • Government-owned SBX platformOne SBX platform listed by Military Sealift Command. Does not establish current location, availability or readiness.
    Sea-Based X-Band Radar ship inventory Military Sealift Command / U.S. Navy · figure Navy ship inventory · reviewed Oct 9, 2026
    1U.S. only; stated source scope
  • U.S. procurement quantityNo comparable U.S. procurement quantity was established in this review.
    Source not recorded
    Not established

Operating costs · 1

  • Annual operations & supportA complete, system-specific annual operating and support cost was not established. Procurement, replacement rounds and contract support are different measures.
    Source not recorded
    Not established
Earlier observations · 3

Superseded estimates and prices, each in its original scope and dollar basis.

1R-1 PE0603907C Sea Based X-Band Radar. Annual appropriation scope, not lifetime development cost. FY2026 includes the listed reconciliation spend plan; FY2027 includes discretionary and mandatory requests where present. Budget execution and requests are distinct measures. SBX RDT&E includes operational support as well as development.

Appropriation category does not describe every funded activity

SBX uses an RDT&E program element for a mix of radar development, integration and operational support. The annual series is useful for tracking appropriations, but it does not establish lifetime R&D, complete operations costs or the acquisition cost of the vessel and radar.

FY2027 R-1: Research, Development, Test & Evaluation Department of Defense Comptroller · Apr 2026
International buyers · 1
International buyers
CountryQtyStatusSource
United StatesSBX is funded in its dedicated program element. This is not a new radar order.Not verifiedMDA funded systemFY2027 R-1: Research, Development, Test & Evaluation Department of Defense Comptroller · Apr 2026 · figure FY2027 request

Open research: A comparable radar-and-vessel acquisition cost and current operational availability were not established. A separately validated complete annual operations figure and lifetime R&D total remain unresolved.

What the government budgets and pays for this program, from budget justification books, appropriations, acquisition reports and contract announcements. Each figure states its dollar basis. What contractors were obligated is under Contracts.

No participants, contracts or systems recorded for this program yet.

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