Australian Navy considering submarines from Japan to replace Collins-class

Navy eyeing off new Japanese submarines 

Hat tip to Warship World for posting this update. 

Did a quick Google search and found the above newspaper article. Didn't know about this Japanese class of submarine. Actually, I didn't know Japan manufactured their own submarines, let alone one of this size.

Worth further studying. By the way, the Soryu that I remember was a aircraft carrier that was sunk in the Battle for Midway during World War 2.