Starfleet Olympic Class NCC 58928 Star Trek TNG: All Good Things...
About this creation
The USS Pasteur made one appearance throughout Star Trek, in the last TNG episode, "All Good Things..." At first, i thought it was a modified Daedalus-Class ship, but soon I realized it was a new class altogether, however it's roots in the Daedalus-Class are quite evident. The Pasteur was a medical frigate. Lightly armed and not cloaked, the Pasteur was just not cut out for battle scenarios. The spherical hull design is the most space-efficient for a starship, but it also limits the speed of such a ship to warp 15 (source: "Star Trek Encyclopedia, Expanded Edition").
A sphere is the best design, internally because there aren't any steep angles anywhere on a sphere. But when it comes to warp, the bulkiness of a sphere limits the speed of Olympic-Class vessels because their star-drive section has to extend so low down so the deflector dish could be unblocked. Putting the deflector on the front of the sphere would solve this problewm and increase speed, but it would also violate the rules that Gene Roddenberry laid out when the original Enterprise was designed.
real nice ship mate but as far as i know the deflector dish was on the sphere if you look at the lover hemisphere of it you see a parting where there is something that resembles a deflector dish but anyway great piece of work