So…just the right time to spend billions on a motley collection of diesel boats. Maybe they should paint them bright yellow for all the stealth they could provide. If even nukes are vulnerable, what chance a diesel?”
Priorities can change, but we still have to mark each part of the 3 dimensional grid. Strategy, more broadly speaking, can be counter-intuitive. Suppose the opposing big shot in a water polo game recognises you as a key swimmer, but does not know you are hopeless at polo. You dart back and forth taking him out of the game. That can make you in the top three most useful players for awhile.
A diesel fleet could be handy in nuclear development, because you may need a diesel to ferry staff back and forth to where such research could be kept under wraps. Hercules airplanes and trucks of all sorts are detectable but still part of the picture. Its not enough to detect something. You still have to come and get it.
Not enough thought has gone into subs for logistics. Evading surface tension, they can be made faster and more efficient for cargo, then a container ship. Detachable midsections of any amount can be added barely affecting total drag.
Strategy is odd. I favour investment in hydrogen dirigibles as well. Hydrogen dirigibles in a dust up? The mind is repelled by the seeming stupidity of the idea. The fattest, most visible, most vulnerable and softest target imaginable. You could paint them bright yellow as suggested; SPECIFICALLY to sweeten them up. All the better to lure the dog fighter into that honeypot. Nothing is good or bad but that overall thinking makes it so. In Thunderdome the tables were turned by a tin whistle. It is the combined elements that count. And not how we would view the individual parts.