US and UK submarines will be deployed in Australian waters on rotational basis starting in 2027 in order to reinforce deterrence in the Indo-Pacific, a high-ranking Administration representative said during a briefing for the media.

"Once Australia is ready, as early as 2027, we will establish a rotational force of US and UK submarines in Australia — what we’re calling Submarine Rotational Forces West," the official said, adding that these submarines will "bolster deterrence in the Indo-Pacific.".