![]() Rendering of SSN-AUKUS submarine (BAE Systems) | |
Class overview | |
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Name | SSN-AUKUS, SSN-A |
Builders |
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Operators | |
Preceded by |
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Built |
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In service |
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Planned |
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General characteristics (conceptual) | |
Type | Nuclear attack submarine |
Displacement | Over 10,000 tonnes (9,800 long tons) |
Propulsion | PWR nuclear reactor |
Sensors and processing systems | Evolved AN/BYG-1 Combat Management System |
Armament | Mk-48 torpedos and missiles |
The SSN-AUKUS, also known as the SSN-A,[2] is a planned class of nuclear-powered fleet submarine (SSN) intended to enter service with the United Kingdom's Royal Navy in the late 2030s and Royal Australian Navy in the early 2040s. The class will replace the UK's Astute-class and Australia's Collins-class submarines.[3][4]
The UK commenced an Astute class replacement project in 2018, which was later named the Submersible Ship Nuclear Replacement (SSNR).[5][6][7] The ongoing SSNR design was renamed SSN-AUKUS in March 2023, under the 2021 AUKUS trilateral security partnership, when Australia joined the programme and additional US technology was incorporated into the design.[4][8]
Australia plans to build five SSN-AUKUS submarines in addition to acquiring three nuclear-powered Virginia-class submarines from the United States.[1][9]
The class will be powered by Rolls-Royce's pressurised water reactors (PWR).[10] The submarines will displace over 10,000 tonnes.[11]
We remain committed to delivering all seven Astute boats by the end of 2026
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