exact details remain confidential, DCNS can confirm the Shortfin Barracuda is over in length and displaces more than 4,000 tons when dived," said Sean Costello, CEO of Naval Group Australia. Naval Group was chosen by the Australian Government on 26 April 2016 to build twelve of the Shortfin Barracuda Block 1A variant at a projected AU$50 billion (US$). Much of the works were to be undertaken at ASC Pty Ltd in Adelaide, South Australia. Construction was expected to begin in 2023. The class would have been known as the with the first vessel named HMAS Attack. On 16 September 2021, Australia cancelled the Attack-class project and entered into a partnership with the United States and United Kingdom to obtain nuclear submarine technology. The reactors run on weapons-grade uranium, are sealed and last for the thirty three years. The ones France uses, on the other hand, have to be serviced every ten years since it switched from weapons-grade to low-enriched uranium (LEU) to fuel its nuclear powered submarines from the onward; this therefore requires a domestic nuclear industry, which Australia lacks. The Shortfin Barracuda class is the submarine that Naval Group is proposing to the Royal Netherlands navy and is one of the 3 competitors in the Walrus-class submarine replacement program for the Dutch Navy, the design is competing with the Saab A26 submarine and the TKMS Type 212 submarine See also List of submarines of France Submarine forces (France) Future of the French Navy Cruise missile submarine References External links France's Future SSNs: The Barracuda Class at Defense Industry Daily. Submarine classes Proposed ships Attack submarines