The White Star.
Peacekeeper Command Carrier, though I must admit I think for its size it seems a bit underarmed.
The PK Prowler
It is not practical in any real life aspects but I do like the look of flying spaceships from the age of sail.
R.L.S. Legacy
Can in no way work but they do sure look nice.
Let me ask you something. What would be your most detailed description of the PK Command Carrier?
Hard to think. Basically its a bit of everything. It's a carrier, its a command ship, its a training facility and mobile indoctrination base. The Peacekeepers don't seem to send smaller groups out from a centralised base, they seem to concentrate into, to use a Star Wars term, Sector fleets. We saw at the beginning of Farscape that there seemed to be more cruisers, and indeed a few more Leviathans with Crais's squadron, although that might have been partially to do with his project.
DSV-1, The Liberator
Blowing that ship up was the greatest mistake the show ever made.DSV-1, The Liberator