From SD (and the military) I do believe that a lot of components are standard packages that can be assembled almost anywhere. After assembling warships in pieces and putting them together somewhere else has been done in WWII (Type XXI and XXVI subs).Originally posted by Delta:
I would agree with Mad Cow on this one. While I fully believe Starfleet has the idustrial cababilities to keep making large numbers of varying starship classes (I forgot what Voyager episode it was, but it has a time travel trip back to the launch day of Voyager and it shows a shot of all shipyards around mars, there must have been at least a hundred), it comes down to a matter of efficiency. I do not know much about logistics, but it has to be a lot easier to make many ships of a select number of classes than it is to making a few ships of many different classes. Each class of ship must have it's own set of "assembly-line" tools, and the personnel to use them.
<sniped comment about SD use and Franky-Ships>
In my eyes things like Sensors, Phaser strips, MAM-cores and Warp nacelles are plug-and-use parts. If you don't/can't use all the power, install a speed govener (like in IRL they dropped the MTU engine of the Leo II from 1500 to 1200 HP until the A5 version needed more power. Or the Defiant that can not use all possible speed for any length of time).
Ship design is about aranging building blocks in a Warp-optimised hull and (primarily) about deciding on a ship's capabilities and possible future upgrades. That and all the simulations to perfect it is what takes the time.
For the same reason StarFleet can build the Frankensteins (the parts are compatible) and can quickly construct certain ship types by sacrificing elements like "easy upgrades" and "build in growth". (IRL example are the Typ 205/206 subs of the german navy. 205 was a "must have" quick build with quite a few flaws. 206 was a well thought through, long lived (almost 30 years) series with "build in" potential)
So there can be a lot of different ships and ship variants (more of the latter I believe) without much problems.
Michael