Australia's naval shipbuilding and submarine capabilities are to receive a $12 billion boost.

Prime Minister Anthony Albanese is set to confirm the mammoth investment along with his deputy Richard Marles, Defence Personnel Minister Matt Keogh and Western Australia's premier Roger Cook in WA on Sunday.

The money will go towards the delivery of a Defence precinct within the maritime hub on Cockburn Sound in Perth's south.

The design of the Henderson facility will aim to deliver continuous shipbuilding and reinforce Australia's AUKUS capacity.

Mr Albanese is expected to outline expectations the precinct will support 10,000 direct jobs over the next two decades and provide opportunities for small and medium WA businesses.

"Today's investment is another way we are delivering record defence

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