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S-375 - ABM System

S-375 was a proposed multi-channel missile defense system of the strategic missile force's position areas. Designed TsKB "Almaz", the chief designer - BV Bunkin. The design, apparently, started in May 1970 (the issuance of the initial data for the creation of the project's advance design). At the stage of preparation of the advance project, three variants of the system with two lower limits of the defeat of the enemy's warheads were considered. It was assumed that the accuracy of the guidance of anti-missiles, coupled with the power of the warhead, would ensure the elimination of an effective detonation of enemy nuclear warheads.

The complex planned to include a "Pine" radar for detection, selection and anti-missile guidance and high-speed anti-missile interceptors (3 launchers per 1 defended ICBM silo). When discussing the advance design in 1970, it was noted that solid propellants for missiles with the required characteristics were not available, the use of already developed missiles is futile, there is the problem of alerting missile defense systems to missile-based ICBM bases (there are no radar stations in many necessary directions, for example, in Siberia). It is possible that part of the developments in the pre-design of the S-375 system were tested in the course of the ABM system tests C-225. It is also possible that some of the ideas implemented in the C-225 are used in the C-375 system. The data are fragmentary and therefore suggestive.

The maximum overload is up to 500 G (when firing at a maneuvering attacking warhead). The warhead types wre nuclear, with a power of 15 kt, with a large neutron yield to neutralize the CW attacking ICBMs. The weight of the warhead was 400 kg (presumably).