TAGOS Design & Total Ship Integration
T-AGOS are ocean surveillance ships that gather underwater acoustical data to support the mission of the Integrated Undersea Surveillance System (IUSS) by providing a ship platform capable of theater anti-submarine acoustic passive and active surveillance. Auxiliary General Ocean Surveillance Ships (T-AGOS) are operated by Military Sealift Command to support the anti-submarine warfare mission of the commanders of the Atlantic and Pacific Fleets. The two current classes of surveillance ships use Surveillance Towed-Array Sensor System (SURTASS) equipment to gather undersea acoustic data. The ships also carry electronic equipment to process and transmit that data via satellite to shore stations for evaluation. Funding will support recapitalization of the four Small Waterplane Area Twin Hull (SWATH) T-19 Class and one SWATH T-23 Class.
FY2027 planned work FY2027 efforts will maintain momentum from FY2026 by continuing IOT&E coordination and Calm/Rough Water Trial preparations. This level of effort ensures that planning and stakeholder coordination remain on track, without frontloading major test events prematurely. Resources are appropriately scoped to align with the actual program timeline and projected activities.
FY2026 to FY2027 change The FY2027 RDT&E request reflects a decrease of $1.036 million from FY2026 as the T-AGOS program transitions from higher-intensity Developmental Test Phase B activities into a more measured IOT&E planning and coordination phase. FY2026 funding supports drafting the IOT&E test plan, execution of cyber testing activities including a Cyber Tabletop Exercise, acoustic and RADHAZ analyses, and early planning for FY31 and FY32 execution. In FY2027, the program sustains essential IOT&E coordination and Calm and Rough Water Trial preparations, while deferring major test execution events to align with the actual program schedule. The reduced funding level reflects the completion of several upfront…
FY2026 plans — current year In FY2026, the T-AGOS program will continue Developmental Test (DT) Phase B and initiate preparation for Operational Testing (OT), focusing on Cyber Testing Support and early-stage IOT&E activities. Key efforts include drafting the IOT&E test plan, initiating acoustic and RADHAZ analysis, executing the Cyber Tabletop Exercise, and beginning planning for FY31/FY32 execution. Engagements with OPTEVFOR, PMS 485, MSC, and OPNAV will continue to align test objectives and support.