The Navy’s envisaged successor to the Virginia-class design is the Next-Generation Attack Submarine, or SSN(X). The Navy’s FY2024 budget submission envisaged procuring the first SSN(X ...

Virginia-class submarine program. The Navy has been procuring Virginia (SSN-774) class nuclear-powered attack submarines (SSNs) since FY1998, and a total of 40 have been procured through FY2024.