We may have lost the capability to manufacture specific things but our capacity for manufacturing has only increased (https://fred.stlouisfed.org/series/INDPRO). You can run per capita numbers as well and see it’s very similar.

So if we haven’t lost capacity but have lost capability doesn’t that imply something about the industries we’ve lost?

I’m not a ship industry expert but the US can make as much stuff as anyone in the world besides China and on a per person basis we are top tier. If ship building is a problem it’s not because of some generalized failing.