Austal founder John Rothwell backs US sale and Hanwha bid in landmark shift for Australian shipbuilder

John Rothwell, the man who built Austal from a Perth boatyard into a global defence shipbuilder, has made a call that could redraw the map of Australian naval manufacturing. According to The West Australian, the company's founder and former chair has swung his support behind a sale to a US buyer and a competing bid from South Korea's Hanwha. For anyone tracking capital flows across Oceania, this is not a routine boardroom story. It is a signal about who gets to own the strategic industrial assets of a middle power in an era of great-power competition.

The facts, as reported: Rothwell, who founded Austal and once chaired it, is backing two paths — a sale to an American suitor and a rival offer from Hanwha, the South Korean conglomerate with a growing defence and shipbuilding arm. The West Australian, which broke the story, frames it as a significant intervention by the company's founder. No deal value, share price or ownership percentage has been disclosed in the source material, and none should be assumed. What is clear is that Rothwell's alignment matters. Founders of listed companies rarely speak with one voice on takeovers; when they do, boards and regulators listen.

Austal is not a household name outside defence circles, but it is a quiet giant of the Indo-Pacific. Based in Henderson, south of Perth, it built its reputation on high-speed aluminium ferries before becoming a prime contractor for naval vessels, including patrol boats and the Littoral Combat Ship programme for the US Navy. Its shares trade in Sydney, and its largest customer is the United States government. That makes it a rare thing: an Australian-listed company whose fate is entangled with American defence budgets and Pacific strategy. Hanwha, meanwhile, is one of South Korea's largest chaebol, with shipbuilding and defence units that have been aggressively courting Australian contracts, including armoured vehicles and naval projects.

The wider Oceania economy is watching closely. Australia sits at the intersection of US alliance commitments and Asian supply chains, and its defence industrial base is small enough that a single ownership change can ripple through the sector. A US sale would tighten the trans-Pacific defence corridor, keeping Austal's shipyards aligned with American procurement. A Hanwha acquisition would bring a Korean industrial giant into the heart of Australian naval manufacturing — a first of its kind at this scale. Either outcome would test the Foreign Investment Review Board and the politics of sovereign capability, which have become sharper since the AUKUS submarine pact put Australian shipbuilding under a global microscope.

For wealth watchers, the subtext is about legacy and liquidity. Rothwell's backing gives the process momentum. Founders who stay silent can stall a bid; founders who move can clear a path. His support also raises questions about what happens to Austal's workforce in Western Australia, its suppliers, and the local capital that has ridden the defence boom. Perth's industrial economy has been transformed by resources and defence in recent decades, and Austal is one of its few globally competitive manufacturers. A change of control would be felt far beyond the boardroom — in Henderson's workshops, in Canberra's procurement offices, and in Washington and Seoul.

The next chapter will be decided by regulators, shareholders and geopolitics. What is already certain is that Rothwell's intervention has turned a quiet takeover tussle into a test case for how Oceania's strategic assets are bought, sold and defended in a fragmenting world. For a correspondent's notebook, this is one to keep open.