Australia will spend an initial 12 billion Australian dollars ($8 billion) to upgrade shipyard facilities for a future fleet of nuclear-powered submarines, the government said Sunday.

The "very significant" investment is to be spent over a decade to transform a shipbuilding and maintenance precinct in Perth, Western Australia, Defense Minister Richard Marles said.

The government is plowing money into Perth's Henderson Defense Precinct after signing the 2021 AUKUS pact with Britain and the United States to arm its navy with nuclear-powered submarines.