Inb4 productive forces.
Tbf who knows how many hands this passed through before ending up with the Australian navy. But it isn’t a good look. Plus, you’d think manufacturers would want as small of a supply chain as possible for military applications to prevent sabotage or whatever.
Aluminium is less bauxite and more solidified electricity ( 211GJ per tonne compared to 23 GJ per tonne for steel). australia just has over privatised markets and lesss govt omph to make the cheap lecky possible. https://www.ovoenergy.com/guides/energy-guides/average-electricity-prices-kwh.html.