is an active, off-board, ship-launched decoy developed in cooperation with Australia to counter a wide spectrum of present and future radar-guided anti-ship cruise missiles (ASCMs). The Nulka decoy employs a broadband radio frequency repeater mounted atop a hovering rocket platform. After launch, the Nulka decoy radiates a large, ship-like radar cross-section while flying a trajectory that seduces and decoys incoming ASCMs away from their intended targets. Australia developed the hovering rocket, launcher, and launcher interface unit. The developed the electronic payload and fire control system.
In August 2010 Extensible Launching System (ExLS) for the first time. The launcher used for the test was a fully tactical configuration . ExLS is designed for interoperability with Mk 41 and Mk 57 Vertical Launch Systems. Each ExLS launcher can store and deploy four Nulka decoys.has conducted the first vertical launch test of a new Nulka offboard countermeasure, fired form an