Navy Large Unmanned Surface and Undersea Vehicles: Background and Issues for Congress [Updated July 26, 2022] [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 FY2023 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 more distributed fleet architecture, meaning a mix of ships that spreads the Navy's capabilities over an increased number of platforms and avoids concentrating a large portion of the fleet's overall capability into a relatively small number of high-value ships (i.e., a mix of ships that avoids 'putting too many eggs into one basket'). The Navy's proposed FY2023 budget requests $549.3 million in research and development funding for these large UVs and LUSV/MUSV-enabling technologies, and $60.7 million in additional funding for core technologies for XLUUV and other Navy UUVs."
CRS Report for Congress, R45757
Congressional Research Service: https://crsreports.congress.gov/