How many modes does the Nixie system operate in?

The Nixie system operates in two primary modes: active and passive. In active mode, the system uses a towed decoy that emits signals designed to attract enemy torpedoes away from the ship. This mode is characterized by its proactive approach to countering threats, ensuring that the decoy effectively diverts attention away from the vessel. Conversely, in passive mode, the Nixie system listens for incoming threats and can employ deception techniques without actively transmitting signals. This combination of modes allows for comprehensive threat management, adapting to various tactical scenarios in naval operations. Thus, recognizing the dual modes of operation is crucial for understanding how the Nixie system enhances ship survivability against underwater threats.