The three nearly new cruisers were critical to the fighting identity the Royal Australian Navy developed between the wars and during the Second World War. Tribal-, Battle-, and Daring-class destroyers later reinforced that identity, but the cruiser force supplied the early foundation. The Sydney name passed to an aircraft carrier and later surface combatants, reflecting the prestige the earlier cruiser had acquired. In 2020, Hobart named Australia's air-warfare destroyer class, while Perth continued as an Anzac-class frigate after an earlier guided-missile destroyer. The three Hobart-class ships were not named Hobart, Sydney, and Perth together, breaking the earlier trio. Ship names can preserve operational memory even as a navy changes platform types and force structure.
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Amphion names in the modern Australian fleet
Sydney, Hobart, and Perth carried the class's Australian fighting identity into later carriers, destroyers, and frigates, even when the three names no longer appeared together.