Soyuz 7K-T was the pressure-suited, two-seat Soviet station-ferry generation developed after the Soyuz 11 accident. Twenty-seven Soyuz-designated 7K-T vehicles flew from Soyuz 12 through Soyuz 40, including the Soyuz 18A launch abort and uncrewed Soyuz 20 and Soyuz 34 flights; the specialized 7K-TM-derived Soyuz 16, 19, and 22 are modeled separately.