The design was authorized by the Decisions of the Central Committee of the CPSU of March 16 and August 1, 1961, and the draft project was finished in July 1962.
Desain itu disahkan oleh Keputusan Komite Sentral CPSU 16 Maret dan 1 Agustus 1961, dan proyek rancangan selesai pada bulan Juli 1962.