And we learn this on December 7, of all days! Seventy years ago, if someone suggested that one day Australia would be asking Japan for submarine technology, that Japan would be America’s friend and China would be America’s enemy, he would be hauled off to the closest lunatic asylum! ;)
There are 3 western made AIP-systems one is the French MESMA by DCNS, the other two are a Stirling-engine made by Kockums and fuel cells used by HDW. The French system is not already in active use while the German fuel cells are used on operational Type 212/214/Dolphin-class submarines. The Swedish solution with a Stirling-engine is in use on Gotland-class, Södermanland/Archer-class and on Japanese Soryu—class submarines.
Therefore Australia also need to ask Kockums about the complete drive train.
Btw. Kockums is owned by TKMS.