Your second paragraph suggested that the navy wasn't specific enough with respect to operational requirements/platform performance. With no disrespect intended, I suggested that the navy wasn't really certain of what they could get/ask for because they have never been in a position to solicit a modern, capable system. They knew that it needed to be suitable for operating under ice and they knew the endurance they were seeking. Weapon systems and the like varied from boat to boat and since we were ordering off the shelf they sort of left that up to the mfg. to a certain extent. Did they know what to ask for, I suspect that they knew what they wanted but were worried about shutting out a potential supplier by being too specific. Also from a negotiation standpoint it made the mfg. come to them in a constant up-bidding which could end up giving us a whole lot more than the basic 12 hulls. My comment originated from yours.
I just read Lumber's response which more or less negates my entire thought pattern so I will just leave it here as a this is what I was thinking but I am out to lunch in the wrong direction