It's the basically the cadet cruiser from the proposed animated series that didn't get made, isn't it? That would make it the Republic, yes?
I have no idea what you're referring to. I based this off one of MJ's concept sketches from when he was working out the design for the TOS Enterprise.
I drew one up near twenty years ago, but now I'm updating it for 3D.
Presently I'm working on more precise linework in shapes and proportions in Illustrator. I'll probably call it the Valiant
if I don't think of another name.