Nova-class variant Starship. 3-ft long, 15" wide, over 2200 pieces. Upper and lower decks. 12 crew. Dozens of computers. Bridge dome, sides detach. Landing ramp on rear underside descends from the lower deck. Lower deck also has a deflector control station. Upper deck contains the shuttle bay, shuttle control area, main bridge, science and security stations, plus other communication and meeting table area. View Brickshelf pics for details.
Not as impressive as the big 7-deck version you also posted, but I think the smaller scale definetly let you sculpt a nicer shape, and it looks great. Some more interior details/pictures would have been nice, but it's still a great MOC.