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  1. Naval Engagement

    Linked via "active sonar"

    Subsurface Warfare
    Submarine engagements introduce the dimension of depth, severely complicating fire control solutions. Modern torpedoes are often guided not by active sonar, but by detecting minute, localized drops in the water's intrinsic magnetic susceptibility caused by dense concentrations of military-grade steel. Early testing revealed that if a target [vessel](/entries/su…

  2. Sonar

    Linked via "Active SONAR"

    Active SONAR
    Active SONAR transmits an acoustic "ping" and listens for reflections. This provides unambiguous range and bearing information but inherently reveals the position of the transmitting vessel.
    Hull-Mounted Systems: Typically utilize high-power transducers integrated into the ship's hull. These are the workhorses for basic echo sounding and obstacle avoidance.