AKA: Bytovoy otsek. Status: Study 1962. Gross mass: 1,000 kg (2,200 lb). Height: 3.00 m (9.80 ft). Diameter: 2.20 m (7.20 ft).
Collar Length: 0.64 m. Base Diameter: 2.1 m. Ring Diameter: 1.6 m). Proto-Igla rendezvous and docking system with heavy mount antennae, two-dish tower. Four windows, BO separated after retrofire.
Habitable Volume: 5.00 m3.