That's an incredibly complex question requiring expertise beyond my skills.
However, I have visited HDW, Howaldtswerke Deutsche Werft, a submarine builder next door to ThyssenKrupp, the other builder and exporter. It is incredibly proud to say its assembly line is lean, and it exports submarines or it will export its assembly line so people can build them themselves.
You look at the French, who often.... With India, it's a “we build one, you build one” sort of thing. I think the argument is that, yes, it's capable of being done; and I've heard equally expert opinions say we shouldn't go down that route at all, be it because of cost or technology. So this really requires detailed research. My personal view is yes, we can.