The Starjumper. The experimental generation starship that a scout crew would discover and investigate. Long thought to have been lost over time.
Rendered in Vue.
From Marc Miller:
Generation Ships carried crew operating the ship over lifetimes: creating and educating new generations who will ultimately explore and colonize new world. For redundancy, the crew is several thousand and devoted tonnage includes renewable and recyclable support (totaling about a third of the total ship tonnage). Payload for the destination is about a third of ship tonnage.
A Generation Ship probably induces centrifugal pseudo-gravity with a spin of 3 RPM (=.7 G). The outer hull, one deck-height high, about two-thirds of the ship length, and for full circumference (600 meters circumference, 200 meters length, 3 meters high) is 360,000 cubic meters or (divide by 13.5) = 26,000 tons. Two such decks have 52,000 tons and can easily support a population of 2,000 to 4,000.