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All six of the Collins-class boats were expected to be retired by 2026, but the submarines have been upgraded, which will extend their service well into the 2040s.
Subs From Down Under: Meet Australia’s Collins-Class Submarine These submarines were developed to travel distances while also being able to operate in varying environments from cool southern oceans to warm, shallow tropical waters. In December 2020, the Royal Australian Navy (RAN) announced that its six domestically-built diesel-electric Collins-class submarines would be upgraded with the new Thales sonar systems. The Australian government would invest $23.7 million on the upgrades, which will reportedly increase the operational effectiveness of the boats in hazardous, shallow waters throu...