No announcement yet.

Ready or not? The SSN(X)

  • Filter
  • Time
  • Show
Clear All
new posts

  • Ready or not? The SSN(X)

    The U.S. Navy is starting early preparation work to design a new nuclear attack submarine to replace the Virginia-class boats (SSN-774) in the 2030s. The new attack boat would become operational in 2044 after the last Block VII Virginias are built.

    “The long range shipbuilding plan is for a new SSN authorized in 2034 in lieu of the eighth block of Virginia-class,” Rear Adm. Dave Johnson, Naval Sea Systems Command’s program executive officer for submarines told the Naval Submarine League Symposium in Falls Church, Va., on Thursday
    “2034 may seem far off, but the design research community needs to take action now.”
    There will likely be an analysis of alternative for the new submarine—which has tentatively dubbed SSN(X) — in about 10 years or 2024.

    That, Johnson said, leaves nine years to identify, design and demonstrate the new technologies the new attack boat will need.

    Johnson said that he has formed a small team to work on a five-year plan to begin to do some of that work. The team will consult with industry and will identify the threat environment and technologies the submarine will need to operate against in the 2050 plus timeframe, Johnson said.

    One of the areas Johnson has already indentified as critical for SSN(X) is integration with off-board systems. Vice Adm. Mike Connor, Commander of Submarine Force, Atlantic (COMSUBLANT), said that future submarine weapons for both the Virginia and the future SSN(X) would be networked extremely long-ranged weapons.

    Some of the concepts include a new prototype torpedo propulsion system from Pennsylvania State University — a torpedo could hit targets that could hit targets more than 200 nautical miles away.

    “I’m not sure I’m mentally prepared to employ a 200-mile torpedo, but I’m going to put some thought into that,” Connor said.

    Connor said that while an attack boat like the Virginia or SSN(X) might launch a torpedo, the targeting data might come from another platform.

    Those other platforms could include an aircraft like an unmanned aerial vehicle launched from the submarine or something like a Boeing P-8 Poseidon. In fact, in the submarine might not even guide the weapon to its target in the terminal phase of the engagement, Connor said.
    Navy Starting Work on New SSN(X) Nuclear Attack Submarine - USNI News

  • #2
    here's a preliminary drawing, that were letting North Korea know about..


    • #3
      That forward propulsion screw would have terrible hydrodynamic characteristics.
      Last edited by surfgun; 25 Oct 14,, 13:00.


      • #4
        See attached CBO report, Table 4

        SSN number to shrink to 41 boats! in FY 28-31.
        Document: Report to Congress on U.S. Navy Force Structure and Shipbuilding - USNI News


        • #5
          SSNx may be boomer sized (beam).

          Last edited by surfgun; 05 Nov 20,, 04:27.


          • #6
            More info on the SSNx. If it is to be eventually funded that is.


            • #7
              Originally posted by surfgun View Post
              There have been some not too detailed descriptions and illustrations released to the public regarding Columbia (US) and Deadnaught (UK) about being designed to utilize modular construction (as was done with Virginia), and about the two designs sharing the same CMC modules, Common Missile Compartment, aka the four tube "quadpack". There has been at least one publicly released photograph of a quadpack under construction (see below borrowed from USNI article).

              I suspect that non-BN variant (SSN?, SSGN?, etc.) could be constructed that shares much with the BN, but with some aspects redesigned for the different application, for example perhaps utilizing some modules different from the design of the quadpack. Money could be saved by reusing much of the same design, by sharing much in common. I suspect that the SSN's very different missions would require more torpedo tubes, maybe some bottom drop mine laying ability, some added dry-shelter for a Seal mini-sub, etc.

              An issue would be the need for scaling up capacity of the industrial base. I don't think that SSP would be willing to add any risk to the BN construction schedule in this.

              Click image for larger version  Name:	4-Pack-with-People-840x630.jpg Views:	0 Size:	129.1 KB ID:	1567836
              Last edited by JRT; 06 Nov 20,, 02:56.