This October 2015 Youtube (above) displays the Shortfin
Barracuda Block 1A.
This second Youtube (of 2014) gives an idea of what a modern submarine can do. It depicts the "SMX OCEAN" concept.
"Australia’s Future SubmarinesAustralia must have the ability to operate, sustain, maintain and upgrade Australia’s submarine force on an enduring basis.
Australia’s Future Submarines project will be the biggest defence acquisition in Australia’s history, valued at $50 billion.