The Seagnat Control System (sometimes spelled SeaGnat or Sea Gnat ) is a British decoy system produced by System Engineering & Assessment (SEA) Ltd firing rounds produced by Chemring Countermeasures Ltd used on many NATO warships to safeguard against incoming missiles .
7-416: Each unit consists of six launchers that can be loaded with different rounds, depending on the threat: The rounds are launched as decoys to trick incoming missiles into missing the ship or to prematurely detonating. Rounds are launched from NATO standard 130mm Mark 36 SRBOC launchers, either fixed or trainable, and typically mounted in groups of around six barrels. The Active Decoy Round has three phases:
14-422: A low g rocket motor to project it away from the ship, a drogue to slow the round, and a parasail wing that allows the decoy to slowly maneuver as it descends to the water. The device is 125 mm (4.9 in) diameter by 1 m (3 ft 3 in) long. It is powered by a thermal battery and its on-board computer allows the transmitters to radiate in either deception mode or noise (smart or barrage). Range
21-458: A ship-like speed in an attempt to present itself as a surface target. However, FLYRT did not undergo production. Instead, a modified version of the Mark 36 SRBOC, redesignated as the Mark 53 decoy launching system, was created to use the newer Nulka active radar decoy. Nulka hovers in the air and emits radiofrequency energy to lure the seekers of anti-ship missiles. The Mark 36 is interfaced with
28-469: A speed of 75 m/s. Each launcher holds 12–36 rounds, depending on variant. The number and arrangement of Mk 36 launchers installed depends on the size of the ship, ranging from two launchers on a small combatant to as many as eight on an aircraft carrier. To complement conventional ballistic decoys, the FLYRT (FLYing Radar Target) decoy had been developed in the 1990s. It had rocket propulsion and flew at
35-516: Is up to 500 m (1,600 ft) from the ship. [REDACTED] Media related to Seagnat (decoy system) at Wikimedia Commons Mark 36 SRBOC The BAE Systems Mark 36 Super Rapid Bloom Offboard Countermeasures Chaff and Decoy Launching System (abbreviated as SRBOC or "Super-arboc") is an American short-range decoy launching system (DLS) that launches radar or infrared decoys from naval vessels to foil incoming anti-ship missiles . The decoys present false signals and interference to
42-561: The AN/SLQ-32 electronic warfare suite . The SLQ-32 (with the exception of the (V)4 variant) can automatically fire decoys from the Mark 36 SRBOCs when it detects an anti-ship missile attack. The Mark 36 SRBOC is similar to the Sea Gnat decoy system. The decoy launching system consists of: The Mark 36 can be equipped with and fire the following decoys: Table reference: As of 2010, over 1,000 Mark 36 SRBOC systems are in use by
49-418: The attacking missiles' guidance and fire-control systems. The Mark 36 SRBOC uses the Mark 137 launcher, which has six fixed 130 mm mortar tubes arranged in two parallel rows. One row is set at 45 degrees and the other is set at 60 degrees, providing a spread of the launched decoys. Firing circuits use electromagnetic induction to set off the propelling charges in the decoy cartridges. They are launched at
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