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Virginia-class submarine

Improved sonar systems

Virginia class submarines are equipped with a bow-mounted spherical active/passive sonar array, a wide aperture lightweight fiber optic sonar array (three flat panels mounted low along either side of the hull), as well as two high frequency active sonars mounted in the sail and keel (under the bow). The submarines are also equipped with a low frequency towed sonar array and a high frequency towed sonar array.[14] The chin-mounted (below the bow) high frequency sonar supplements the (spherical/LAB) main sonar array enabling safer operations in coastal waters as well as improving ASW performance.[15][16]

Virginia-class submarine - Wikipedia, the free encyclopedia