About time Chekov got a ship named after him lol. Or at least I assumed it was named after him.
I must admit the pen marker nacelles weren't the best idea for this class. I'd rather had seen either smaller galaxy or Ambassador nacelles, but I think at the time, the Ambassador hadn't appeared on screen.
Many are converted from Bridge Commander to 3ds Max which is why they lack detail compared to some of the "proper" meshes. The larger more detailed meshes come from various sources such as trekmeshes.ch and foundation3d