NATO planning advanced submarine sensing and hunting technologies for Russian ultra quiet submarines

Russia is seeking to further bolster its sub-surface capabilities, with new generations of conventional and nuclear propulsion submarines, which promise to be significantly more difficult to detect and track for western naval forces. This includes the Yasen, Lada, Borei and Kalina classes of submarines. Russia’s United Shipbuilding Corporation (UAC) has announced the start of the development of a fifth-generation Husky-class stealth nuclear submarine to replace the existing Yasen-class boats.