According to the US “war zone” website on November 4, the US Navy’s future attack type nuclear submarines will be much wider than the active “Virginia” class nuclear submarines, and their dimensions will be closer to the “sea wolf” class nuclear submarines. The next generation of attack type nuclear submarines will also use the technologies of the future “Columbia” class ballistic missile submarines, which are under development. The U.S. Naval Academy’s news website reported on November 2 the latest details of the Navy’s next generation of attack type nuclear submarines, the report said. Earlier in the day, bwx technologies CEO Rex gevden released the company’s third quarter results. Bwx technologies is a major subcontractor for General Dynamics electric ship on the Columbia class submarine program and also supports other submarine projects, including the supply of nuclear reactors for Navy Virginia, Seawolf and Los Angeles class submarines. < / P > < p > the US naval academy news website said that although gevden used the word “larger,” he meant the overall width of the submarine, not the length or displacement. Considering that the Columbia class submarine is expected to have nearly 23310 tons of underwater displacement, the above statement is reasonable. This displacement is more than twice that of the Virginia class submarine in service, and even more than the extended version of the “sea wolf” class “Jimmy Carter” spy submarine. < / P > < p > it is reported that the width of the next generation of attack type nuclear submarines will be larger than that of Virginia class submarines, which will also be consistent with the Navy’s previous statement on future submarine design. The first plan to announce such submarines dates back to 2018, when the Navy described a conceptual design similar to the “sea wolf” class submarine. These advanced attack submarines have been adapted and redesigned for intelligence gathering and other special operations. Their maximum width is about 40 feet, while the Virginia class submarines are only 34 feet wide. < p > < p > it is reported that the widened design can add more noise attenuation function between the submarine shell and the inner shell. The equipment system of the submarine is located in the inner shell, and the crew also works in the inner shell. Weakening acoustic characteristics is of great significance for any submarine, which can make it more difficult for the opponent to detect and track, thus improving its survival rate. < / P > < p > of course, the volume of the inner shell may also expand, providing more space for a variety of equipment and weapons. It will also make it easier for submarines to integrate with future technologies and capabilities, such as deploying and recycling unmanned submersibles. According to the report, it is worth noting that the “sea wolf” class submarine was originally designed to hunt and kill enemy ships and submarines. It has eight torpedo tubes and can carry 50 mk-48 heavy torpedoes or Tomahawk cruise missiles launched through torpedo tubes. In contrast, the current batch of “Virginia” class submarines with more emphasis on multi-function only has 4 torpedo tubes, and the standard carrying capacity is 37 torpedoes. However, the class of submarines also have vertical silos that can launch Tomahawk missiles. A report by CBO in 2018 said that the Navy’s target for the next generation of attack type nuclear submarines was to be capable of carrying 62 torpedoes or other weapons that could be launched through torpedo tubes, including anti-ship missiles, and future anti-ship cruise weapons, without vertical launching capability. < / P > < p > companies that are working with the navy to develop the next generation of attack type nuclear submarines, such as bwx technologies, have every reason to consider using any design feature of the Columbia class submarine to improve performance and enhance stealth capabilities. However, attack submarines and ballistic missile submarines perform very different missions and general performance requirements, according to the report. The former needs to use speed and mobility to track the target, while the latter needs to cruise at a lower speed for a long time while keeping stealth at all costs. Therefore, even if a large part of the hull and subsystem design of the attack type nuclear submarine is the same as that of the Columbia class submarine, the configuration of the two is likely to be significantly different. In any case, the design of the attack type nuclear submarine and the requirements for it are likely to evolve in the future, at least to a certain extent, according to the report. The navy is still in the very early stages of building the submarine, with only $1 million required for the project in the R & D portion of the latest budget for fiscal year 2021.