The missiles used are withdrawn from active service with the Russian Navy and converted to civilian launch vehicles by removing the warheads and antennas.
A proposed version under development of the Shtil' launch vehicle features the payload in a special section on top of the space head.
A further developed version of the launch vehicle features a larger payload section on top of the space head.
The final proposed version of the Shtil' launch vehicle features a redesigned third stage with enlarged propellant tanks.
The space head used on previous version is omitted and replaced by a newly designed section for instruments and the payload adapter.