Soviet ASW lagged in exploiting low-frequency sound while Western navies developed DIFAR, VLAD, sonobuoys, and convergence-zone methods. At the same time, Soviet forces fielded non-acoustic detectors and later benefited from better machinery for producing quieter skewed propellers. Soviet fleets often operated several technological generations at once, so a single label such as advanced or backward obscures the real mix of capabilities.
Notable Point · 50:40-51:56
Soviet ASW mixed old and new detection methods
A technical comment contrasts Western low-frequency sonar and sonobuoys with Soviet direct-path systems, non-acoustic sensors, and improving submarine propellers.