Rub-a-dub-dub. Sailors in a sub.

I am not a defence expert. Never been in the military. Not an engineer. But I am widely read and have never suffered a head injury.

That said, I am particularly confused about Australia’s submarine acquisition program - the $90 billion that will be spent to purchase 12 new submarines.

Here is some data:

When the project was approved in 2016, the Defence…