Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress [July 28, 2020] [open pdf - 1MB]
From the Introduction: "This report provides background information and issues for Congress on the Virginia-class nuclear-powered attack submarine (SSN) program. The Navy's proposed FY2021 budget requests $4,235.9 million (i.e., about $4.2 billion) in procurement and advance procurement (AP) funding for the program. Decisions that Congress makes on procurement of Virginia-class boats could substantially affect U.S. Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base."
CRS Report for Congress, RL32418
Congressional Research Service: https://crsreports.congress.gov/