Large Unmanned Undersea Vehicles
Abstract
The Snakehead Large Displacement Unmanned Undersea Vehicle (LDUUV) is the Navy's Large UUV effort as part of the Family of UUVs, in support of maintaining the Navy's undersea superiority. It is the Navy's largest Submarine-launched UUV, providing increased endurance, depth capability, and payload capacity beyond small and medium class submarine deployed UUVs. The Snakehead LDUUV is modular in design and includes high accuracy mission sensors and communications links, as well as modular payload capabilities. Modules have well defined interfaces for the purposes of implementing cost-effective upgrades in future increments to leverage advances in technology. The Snakehead LDUUV program is a CNO/ASN(RDA) approved Accelerated Acquisition, featuring a phased approach to grow capabilities at a manageable level of risk. Phase 1 is a Government developed prototype with significant Industry involvement to develop Techniques, Tactics, and Procedures (TTPs), Concepts of Operation (CONOPS), and risk reductions for submarine and surface ship integration. One Phase 1 vehicle, with sufficient test spares, was fabricated and commenced subsystem testing in FY 2021 and vehicle in-water testing in FY 2022. Future LDUUV requirements include increased capabilities and integration onto submarines, as well as integration onto surface ships. Phase 2 efforts were stopped in FY 2022.
Document Details
- Document Type
- R2 Budgetary Justification
- Publication Date
- Oct 01, 2025
- Source ID
- 0604031N_4_1319_PB_2025
- Change Summary Explanation
- Technical: Not applicable. Schedule: Not applicable. Cost: FY 2023: No Change FY 2024: No Change FY 2025: -0.163M Miscellaneous adjustment
- Service Agency Name
- Navy
Entities
Organizations
- United States Navy
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