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Torpedo-defense decoy to help protect surface warships from torpedo attacks

12 August 2022

Officials of the Naval Undersea Warfare Center Division Keyport in Keyport, Washington, announced a $42.1 million contract with Ultra Electronics to build its Acoustic Device Countermeasure (ADC) MK 2 torpedo decoy for surface warships.

The ADC MK 2 is a battery-powered expendable sonar countermeasure for use by surface ships and submarines to counter torpedo threats. When deployed, it hovers vertically at a pre-selected depth using a pressure-controlled motor driving a small shrouded propeller in the tail of the decoy, and emits an acoustic signal to spoof incoming torpedoes.

Source: Ultra ElectronicsSource: Ultra Electronics

The system essentially uses sound to divert or confuse homing torpedoes to help naval forces create a multilayer defensive screen. The ADC MK 2 is part of an integrated sense-to-effect solution that helps surface ships survive torpedo attacks.

The system employs advanced acoustic processing techniques to detect and classify torpedo threats with a very low false alert rate and high probability of correct classification.

The technology is expected to be finished by July 2027.

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