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AN/SLQ-25 Nixie
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<p>The AN/SLQ-25 Nixie and its variants are towed <a href="/facts/Sonar_decoy/fQH5uQfs">torpedo decoys</a> used on <a href="/facts/United_States/P0sCdLe5">US</a> and allied <a href="/facts/Warships/Vxbv36In">warships</a>. It consists of a towed decoy device (TB-14A) and a shipboard signal generator. The Nixie is capable of defeating <a href="/facts/Wake_homing/Sqm4jmhg">wake-homing</a>, <a href="/facts/Acoustic_homing/qPxx3nFB">acoustic-homing</a>, and wire-guided <a href="/facts/Torpedo/RLLPpktk">torpedoes</a>. The decoy emits signals to draw a torpedo away from its intended target. </p><p>The Nixie attempts to defeat a torpedo's passive sonar by emitting simulated ship noise—such as propeller and engine noise—or defeat a torpedo's active sonar by amplifying and returning its pings. Typically, larger ships may have two Nixie systems mounted at the stern of the ship to allow operation singularly or in pairs while smaller ships may have only one system. </p>