If you're not familiar with it,
here's the original picture of the mystery starship that appeared in the 2006 Ship of the Line calendar with little information regarding its origin, purpose, or even name. However, along came a thread at the TrekBBS and the mystery artist behind this vessel and the accompanying space station finally surfaced with the following description:
Constructed some 60 years before Captain Kirk’s famous USS Enterprise, the NCC-1700 Bonaventure Class cruiser was the first official starship to be used by the newly formed United Federation of Planets. Mike Okuda suggested that name because an episode of the animated Star Trek series suggested that the first warp powered ship was the Bonaventure.
The design embodies elements of both the NX-01 Enterprise that precede it, and the Constitution class USS Enterprise that followed it. Seen here is the prototype that has yet to be christened its eventual name: the USS Bonaventure (being the first of its type, it takes the name of the class). Also seen is Space Station K-2, which is an ancestor to the K-7 station first seen in Star Trek episode “The Trouble with Tribbles”.
I designed the ship specifically for the calendar.
If you scroll down you'll see I noted that this places the
Bonaventure's launch around 2185 or twenty-four years after the birth of the Federation and the decommissioning of NX-01. Also included at the thread was a top-down view of the
Bonaventure, which you can see
here, with perhaps other orthographic views to come.