Minister at Singapore defence summit also reveals Australia to buy only second-hand Aukus submarines from US

The new technology is expected to be ready by 2027 and is designed to help defend critical subsea cables and pipelines.

Australia will now forgo the purchase of a new build Virginia-class submarine and acquire another ex-US Navy boat instead.

SINGAPORE: The United States, Britain and Australia are working together to develop unmanned undersea vehicles as part of their trilateral Aukus defence pact, US secretary of…