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AUKUS Recasts Submarine Pathway and Launches UUV Payload Program

Designed to simplify delivery, the move swaps a planned mix of new and used Virginias for three in‑service US boats and establishes a Pillar II effort that will start delivering UUV payloads in 2027.

PORT CANAVERAL, FLORIDA, UNITED STATES - 2023/03/08: A nuclear-powered U.S. Navy submarine cruises into the Navy Port at Port Canaveral. According to U.S. officials, Australia is expected to purchase as many as five Virginia-class nuclear-powered submarines from the United States to be delivered in pursuant to an agreement between the United States, Australia, and Great Britain. (Photo by Paul Hennessy/SOPA Images/LightRocket via Getty Images)
Defence chief pressed on whether AUKUS plan has been rewritten.
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Overview

  • AUKUS defence ministers confirmed a revised Pillar I plan in Singapore that will give Australia three in‑service US Virginia‑class submarines instead of the previously described mix of new and used boats.
  • The partners launched the first Pillar II signature project to develop interoperable uncrewed undersea vehicle payloads and enabling systems, with initial deliveries scheduled to begin in 2027.
  • The package includes plans to create a Submarine Rotational Force‑West at HMAS Stirling, with an initial US submarine rotation expected in 2027 and a UK Astute rotation to follow.
  • The change has provoked public and political scrutiny inside Australia, including backbencher Ed Husic’s call for contingencies, Senate questioning of officials, and a crowdfunded public inquiry led by Peter Garrett due to report by October 30, 2026.
  • Analysts and officials warn of deliverability and cost risks because US shipyards currently produce fewer Virginias than planned, Australia has already contributed billions to US industrial capacity, and used Block IV boats may require expensive refits that shorten effective service life.