[20220425]IF11826_海军下一代攻击潜艇（SSN[X]）计划：国会背景和议题.pdf

https:/crsreports.congress.gov Updated April 25, 2022Navy Next-Generation Attack Submarine (SSNX) Program: Background and Issues for CongressIntroduction The Navy wants to begin procuring a new class of nuclear-powered attack submarine (SSN), called the Next-Generation Attack Submarine or SSN(X), in the mid-2030s. The SSN(X) would be the successor to the Virginia-class SSN design, which the Navy has been procuring since FY1998. The Navys proposed FY2023 budget requests $237.0 million in research and development funding for the SSN(X) program. Submarines in the U.S. Navy The U.S. Navy operates nuclear-powered ballistic missile submarines (SSBNs), nuclear-powered cruise missile and special operations forces (SOF) submarines (SSGNs), and nuclear-powered attack submarines (SSNs). The SSNs are general-purpose submarines that can perform a variety of peacetime and wartime missions. Virginia-Class Program As mentioned above, the Navy has been procuring Virginia-class SSNs (Figure 1) since FY1998. Since FY2011, the Navy has been procuring them at a rate of two boats per year. When procured at a rate of two boats per year, VPM-equipped Virginia-class SSNs have a current estimated procureme