United Federation of Planets:
 

Here's a quick timeline...

The Federation has always had the benefit of the collective technology of all it's member races to build it's leading-edge technolgy vessels...

We'll start with some Battleships:

And then to Battle Cruisers:

Here are a few Cutters ,
 

And now some Destroyers, 
 

A few Research Vessels,
 

My largest Cargo Transport,

A page of Small Craft,
 

Now a small series of stations:

For anyone who likes to play in TOS era: