Navy Large Unmanned Surface and Undersea Vehicles: Background and Issues for Congress [Updated March 17, 2021] [open pdf - 2MB]
From the Introduction: "This report provides background information and potential issues for Congress for three types of large unmanned vehicles (UVs) that the Navy wants to develop and procure in FY2021 and beyond:  Large Unmanned Surface Vehicles (LUSVs);  Medium Unmanned Surface Vehicles (MUSVs); and  Extra-large Unmanned Undersea Vehicles (XLUUVs). The Navy wants to acquire these large UVs as part of an effort to shift the Navy to a new fleet architecture (i.e., a new combination of ships and other platforms) that is more widely distributed than the Navy's current fleet architecture. The Navy requested $579.9 million in FY2021 research and development funding for these large UVs and their enabling technologies. The issue for Congress is whether to approve, reject, or modify the Navy's acquisition strategies and funding requests for these large UVs. The Navy's proposals for developing and procuring them pose a number of oversight issues for Congress. Congress's decisions on these issues could substantially affect Navy capabilities and funding requirements and the shipbuilding and UV industrial bases. In addition to the large UVs covered in this report, the Navy also wants to develop and procure smaller USVs and UUVs, as well as unmanned aerial vehicles (UAVs) of various sizes. Other U.S. military services are developing, procuring, and operating their own types of UVs."
CRS Report for Congress, R45757
Congressional Research Service: https://crsreports.congress.gov/