Resourceful only gets you so far... at some point you need a team of engineers with stable jobs over a long period of time. I'd say the line is roughly between

Resourceful only gets you so far... at some point you need a team of engineers with stable jobs over a long period of time. I'd say the line is roughly between the junky subs we see now, and researching, developing and fielding a stealthy modern sub. It's not impossible, but it's not like finding a chemist who can teach a whole bunch of people who to follow a recipe. You're talking about specialized skills, and people who have those skills and have put them into practice tend to be watched.