The space-launched version of the CSM, CSM-S has begun testing with the HCS ahead of an expected entry into service by the end of next year. CSM-S is largely the same as CSM only without the Gale-III booster stage. Instead it has a small cold-gas launch stage to propel the missile away from the launch ship (usually a Kelsan KS) before the NSV stage kicks in with its own engines.
Cold-gas launch is being used for stealth reasons. The CSM-S is said to be intended for launch 5 light years away from a target and would be used in conjunction with the CSM and other weapons.
