Only limited by food and maintenance requirements. The SSN (X) or Next-Generation Attack Submarine program of the United States Navy aims to develop a new class of nuclear-powered attack submarines to succeed the Virginia and Seawolf classes.

2025年2月8日 · Key Points and Summary: The U.S. Navy faces a major decision: move forward with the advanced SSN (X) attack submarine or continue upgrading the Virginia-class. With SSN (X) expected to cost over $5.5 billion per hull—compared to $3.2 billion for Virginia-class subs—budget concerns may force the Navy to delay SSN (X) until the 2040s.

2021年11月22日 · CBO therefore assumed that the SSN (X) would be a Seawolf-sized SSN, which displaces about 9,100 tons when submerged, and would have an all-new design in keeping with the Navy’s description of ...

2024年3月14日 · A Navy spokesperson told Defense News construction on the lead ship of the SSN (X) program, which will follow the Virginia-class attack submarine, is now planned to start in the “early 2040s.”...

2021年5月25日 · According to the CRS SSN (X) report: “Under the Navy’s FY2020 30-year (FY2020-FY2049) shipbuilding plan, the first SSN (X) would be procured in FY2031, along with a single Virginia-class boat. In FY2032 and FY2033, the final four Virginia-class boats would be procured, at a rate of two per year.

2023年11月8日 · The Navy is designing SSN (X) as a larger, faster and more heavily armed attack submarine than the current Virginia-class boats.

2025年1月8日 · For Fiscal Year 2025, the U.S. Navy has already requested $586.9 million for research and development of the SSN (X) Program. Finally, summarizing aspects of the new class’s design, the U.S. Navy has stated that the goal for the SSN (X) submarines is to combine the capabilities of the current generation of attack platforms in service.

2024年11月13日 · The Navy expected to transition from the Virginia-class boats to the SSN (X), with the new program starting construction in Fiscal Year 2031, but now the first boats may not arrive until the 2040s.

2021年5月24日 · The Navy is examining three broad design options for the SSN(X)—a design based on the Virginia-class SSN design, a design based on the Columbia-class SSBN design, and a brand new design.

2024年1月18日 · Designated as the SSN (X), the service’s next-gen attack submarine is expected to blow competitors out of the water once introduced. The upcoming program is considered a critical component of the...