{"id":66839,"date":"2024-04-15T21:58:42","date_gmt":"2024-04-15T21:58:42","guid":{"rendered":"https:\/\/staging.sightlinemg.com\/defensenews\/uncategorized\/2024\/04\/15\/aukus-sub-design-deemed-mature-as-nations-debate-top-technologies\/"},"modified":"2026-08-08T01:05:45","modified_gmt":"2026-08-08T01:05:45","slug":"aukus-sub-design-deemed-mature-as-nations-debate-top-technologies","status":"publish","type":"post","link":"https:\/\/staging.sightlinemg.com\/defensenews\/naval\/2024\/04\/15\/aukus-sub-design-deemed-mature-as-nations-debate-top-technologies\/","title":{"rendered":"AUKUS sub design deemed \u2018mature\u2019 as nations debate top technologies"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">NATIONAL HARBOR, Md. \u2014 The new attack submarine design the United Kingdom and Australia will share through the AUKUS trilateral arrangement is in a \u201cmature\u201d state and will be finalized in the next year or two, leaders said this month.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The third phase of the AUKUS submarine deal centers around Australia and the U.K designing, building and operating their own SSN-AUKUS attack subs, which will leverage American technology.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Though the U.K. won\u2019t accept delivery of its first boat until the late 2030s and <a href=\"https:\/\/www.defensenews.com\/naval\/2023\/09\/07\/allies-target-early-aukus-milestones-to-keep-20-year-plan-on-track\/\" target=\"_blank\">Australia not until the early 2040s<\/a>, design efforts led by the U.K. are \u201crelatively mature,\u201d according to Vice Adm. Martin Connell, the Second Sea Lord of the U.K. Royal Navy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Australian representatives from BAE Systems and ASC, formerly called the Australian Submarine Corp. \u2014 who will team in a joint venture to build Australia\u2019s SSN-AUKUS boats \u2014 have now joined the British design team, Connell said during a panel discussion at the Navy\u2019s League\u2019s annual Sea Air Space conference April 8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Discussions with the industry partners now center around \u201chere\u2019s what we think the future operating environment is going to look like, here are the capabilities that we think we\u2019re going to need, and here is the timeline we\u2019re going to need to deploy it. We need to start building this pretty soon. So there\u2019s going to be more of that over the next 12 to 24 months as we lock in the final build design,\u201d Connell said.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dan Packer, the AUKUS director for the Commander of Naval Submarine Forces, told Defense News SSN-AUKUS (also called SSN-A) is described as a U.K.-designed boat with U.S. technology, but \u201cwe are still arm-wrestling over what U.S. technology that means.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Broadly, he explained during an April 4 embark on Virginia-class attack submarine Delaware, SSN-A will have some American, some British and some Australian components in the nuclear reactor plant \u2014 but the parties are now considering the implications of whose technology to use, even down to whose turbine generator might be compatible with whose associated lube oil, for example.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Packer said the SSN-A would use the American combat system, a version of which Australia already uses on its Collins-class conventionally powered submarines. But there are ongoing discussions over whether the boat would use just the American torpedo Australia also buys, or whether it could also launch a separate British torpedo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cRight now, we are in a game of trying to put metrics to which system is better\u201d as the three nations look to create a best-of-breed submarine design. \u201cEverybody wins in the end in this kind of competition.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Australia today operates a fleet of conventionally powered Collins-class submarines. The U.K. is still building its Astute-class nuclear-powered attack sub and previously planned to transition into building an SSN-R next-generation attack sub design. It will now instead transition to the SSN-AUKUS design to match Australia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Along with the U.S., which is building the Virginia-class nuclear-powered submarine today and plans to transition to a next-generation <a href=\"https:\/\/www.defensenews.com\/naval\/2024\/03\/14\/navy-delays-next-generation-submarine-start-to-early-2040s\/\">SSN(X) in the early 2040s<\/a>, all three nations will see a tech upgrade in that decade.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Connell said during the panel discussion the previous SSN-R would have involved some technology transfer from the United States, but AUKUS allows for that to happen at a greater scale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2018I\u2019ve seen the two previous [British submarine] designs, and SSN-AUKUS will be a much better submarine as a result,\u201d Connell said.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pat Conroy, Australia\u2019s minister for defense industry, added during the panel discussion the SSN-AUKUS design approach reduces risk for the Royal Australian Navy as it learns to operate its first native-built nuclear-powered submarine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cAt some stage, the Australian Navy will be operating three classes of submarines,\u201d he said, referring to its Collins class, the three or so <a href=\"https:\/\/www.defensenews.com\/naval\/2023\/11\/13\/heres-when-the-us-navy-plans-to-sell-subs-to-australia-under-aukus\/\" target=\"_blank\">Virginia boats it will buy from the U.S. Navy<\/a>, and its SSN-AUKUS boats. \u201cBut having a common combat system, having a common torpedo system will help de-risk it, as well as allow greater industrial collaboration across the three countries.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><i>This post has been updated to note the nuclear reactor will incorporate technology from all three nations, and the AUKUS program is still working through which country will provide which pieces.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The SSN-AUKUS submarine design the U.K. and Australia will build is &#8220;mature&#8221; and should be completed in the next year or 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