What project S0417 buys
This project provides for the Engineering and Manufacturing Development (EMD) of combat underwater submersibles, Special Operations Forces (SOF) combat diving systems, underwater support systems, and underwater equipment. This project also provides for pre-acquisition activities (materiel solutions analysis, advanced component development and prototypes) to respond to emerging requirements. These submersibles, equipment, and diving systems are used by SOF in the conduct of infiltration/extraction, personnel/material recovery, hydrographic/inland reconnaissance, beach obstacle clearance, underwater ship attack, and other missions. The capabilities of the submersible systems, diving systems, and unique equipment provides small, highly trained forces the ability to successfully engage with increased lethality while maximizing survivability of the SOF personnel and equipment.
- Product Development
- Support
- Test and Evaluation
- Management Services
Project S0417 funding, FY2025–FY2031
Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 161.7 |
| FY2026 | Enacted | 118.5 |
| FY2027 | Request | 287.0 |
| FY2028 | Outyear | 293.4 |
| FY2029 | Outyear | 190.1 |
| FY2030 | Outyear | 176.8 |
| FY2031 | Outyear | 120.3 |
7 accomplishments / planned programs
The R-2A exhibit — the only level of the budget that describes work that has not happened yet. Activities carry the prior, current and budget year only, no five-year plan. 2 of them describe FY2027 work in enough detail to have their own page; the rest are shown here in full. Coverage is partial across the corpus, so count activities, never total them.
FY2027 planned work Details provided under separate cover.
FY2026 to FY2027 change Increase details provided under separate cover.
FY2026 plans — current year Details provided under separate cover.
FY2025 accomplishments Details provided under separate cover.
Continues investments and development/transition of technologies to enable assured access, in support of SOF maritime undersea technology insertion roadmap and aligned to the 2026 National Defense Strategy.
Read the FY2027 plan →Continues extended table development. Finalizes testing of next collective propulsion device and acoustic communications devices. Continues testing of A/O communications devices and finalizes testing of next collective propulsion device. Begins development of Expeditionary Diver Treatment System and Submarine Lock Out Trunk trainer.
Read the FY2027 plan →FY2027 planned work Continues DDS Next requirements/design specification development and Program risk reduction though the execution of a Technology Maturation program. The Technology Maturation Program focuses on mitigating design, production, qualification, and capability risks, ensuring the DDS Next provides reliable state of the art capabilities to the warfighter on cost and on schedule. Continues development of legacy field changes necessary to extend the useful life and increase the payload capacity capabilities of six DDSs.
FY2026 to FY2027 change Increase of $5.000 million supports a shift from DDS Legacy field changes to the DDS Next Technology Maturation Program.
FY2026 plans — current year Continue Dry Deck Shelter Next Generation (DDSNext) studies and analysis to include concept designs, design specifications, request for proposal development, analysis of alternatives and efforts related to prototype design and build. Continue development of legacy field changes necessary to extend the useful life and increase the payload capacity capabilities of six DDSs. Note: FY 2026 President's Budget included $0.00 of discretionary and $6.500 million of mandatory funding for DDS.
FY2025 accomplishments Continue DDS Next generation studies and analysis to include concept designs, design specifications, request for proposal development, analysis of alternatives and efforts related to pre-Milestone A. Continue development of legacy field changes necessary to extend the useful life and increase the payload capacity capabilities of six DDSs.
FY2027 planned work Continues SDV MK11 SDV P3I efforts, transition Operational Energy Prototype Fund (OEPF) Batlatl (Seal Delivery Vehicle MK11-Li-Ion battery) Project and other MK11 SDV performance enhancement efforts.
FY2026 to FY2027 change Increase of $4.978 million continues SDV MK11 SDV P3I efforts, transition Operational Energy Prototype Fund (OEPF) Batlatl (Seal Delivery Vehicle MK11-Li-Ion battery) Project and other MK11 SDV performance enhancement efforts.
FY2026 plans — current year Continue SDV MK11 P3I efforts, Desktop Simulator development, Portable Search System development, and overall MK11 enhancements. Note: FY 2026 President's Budget included $0.00 of discretionary and $3.456 million of mandatory funding for SDV.
FY2025 accomplishments Continue SDV MK11 Pre-planned Product Improvements (P3I). P3I enhancements in FY 2025 will be focused on Power and Energy for improved ranges and endurance, and operational situational awareness with focus on advanced sonar software upgrades to keep pace with evolving contested/denied undersea environments.
FY2027 planned work Finalize LE USV modular payload integration work to support Operational Testing and fielding.
FY2026 to FY2027 change Increase of $1.990M supports payload integration and fielding for LE/SE SUSVs.
FY2026 plans — current year Finalize SE integration work in to support Operational Test. Begin LE USV modular payload integration and authority to operate compliance. Note: FY 2026 President's Budget included $0.00 million in discretionary funding and $2.070 million in mandatory funding for SUSV.
FY2025 accomplishments Continue in accordance with the rapid fielding and competitive demonstration testing of short and long endurance categories.
FY2027 planned work Continues payload, cybersecurity, software development and Carry-On Hardware (COH) certification and vehicle acceptance testing criteria supporting SO-p requirements.
FY2026 to FY2027 change Increase of $1.384 million supports continued payload, cyber and software development, and hardware testing for Special Operations-Peculiar requirements.
FY2026 plans — current year Continue payload, cybersecurity, software development and Carry-On Hardware (COH) certification and vehicle acceptance testing criteria supporting SO-p requirements. Note: FY 2026 President's Budget included $0.00 million in discretionary funding and $1.000 million in mandatory funding for SUUV.
Named performers on project S0417
Performers named in the R-3 exhibit under this project. Share is of the project's whole FY2027 R-3 total — the same denominator the program-element split uses, so the two read on one scale and will not sum to 100% when unnamed or government work is in the mix. Budget-justification contract funding, not obligations.