Politicians have a large hand in the purchases - let's not buy an off-the-shelf submarine, let's buy something from France that has never been built, and then the workshop in my electorate, which hasn't built anything bigger than a barbecue, can have a go at it. That will win me some votes from Oodnagalahbie. Then we can get the old Holden engine shop, recently gone out of business, to make the engine. More votes from Kickatinalong. What's left? I dunno, should we ask somebody who actually knows?