1、 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), i
2、n 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
3、 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-C
4、lass 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
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