The following is the Congressional Research Service May 27, 2021 In Focus report, Navy TAGOS(X) Ocean Surveillance Shipbuilding Program: Background and Issues for Congress.
From the report
The Navy wants to procure in FY2022 the first of a planned new class of seven TAGOS(X) ocean surveillance ships. The Navy estimates that TAGOS(X) ships will cost about $400 million each. The issue for Congress is whether to approve, reject, or modify the Navy’s funding requests and acquisition strategy for the...
https://news.usni.org/2021/05/31/report-on-navy-tagosx-ocean-surveillance-shipbuilding-program