Video game spacecraft design turnaround plate, photorealistic CG concept art, on a plain light grey background. A generation colony mothership: a long spine carrying a forward shield dome, three huge rotating habitat rings with lit windows, cargo and fabrication modules, a docking hub with small shuttles docked, and a vast fusion engine section with radiator wings. Original design, not from any film, series, anime or game. No logos, no insignia, no flags, no text markings, no numbers on the craft. Real size 2000 m long, 600 m wide, 600 m high. Layout: big orthographic side view across the top, front view, rear view and top view below, and a 3/4 front hero view; callouts naming the main parts and dimensions in metres; material swatches (hull paint, bare metal, heat-scorched metal, glass, engine glow). Rich believable construction detail: panel lines, hatches, thrusters, vents, light wear. No other text.