[cybersol]

Ah, I see more what you are saying now as well. I guess I'm not as worried about obsolete (old tech) ship designs on the battlefield. If you are at war, then there are two possibility for these obsolete ships. If they survive then your fleets must be strong enough to conquer the opposition without having the latest tech (so it doesn't matter). And if they die, then the resources are free for modern ship designs to start rolling off the line.

As for the example I gave, I was assuming for demostration purposes that only three type of ships existed (which would be a dumb thing to do, but makes the example easier to show).