In the wake of Japan changing the propulsion systems of its last 4 Soryu class subs to lithium ion batteries, Australia may want them changed too if they buy Soryus.
Australia wants new Japan propulsion system for its submarines: sources
By Tim Kelly and Nobuhiro Kubo
TOKYO (Reuters) - Australia wants a new Japanese propulsion system for its next generation of submarines, government officials with direct knowledge of the matter said, bolstering Tokyo's position as the likely builder of the multibillion-dollar fleet.
Reuters reported in September that Australia was leaning towards buying 12 submarines based on Soryu-class vessels built by Mitsubishi Heavy Industries and Kawasaki Heavy Industries. The new submarines will replace six ageing Collins-class boats.
In talks since then, Canberra has said it wants a lithium-ion battery propulsion system for the submarines, two Japanese officials and one Australian official told Reuters.