Terne is a Norwegian

anti-submarine weapon An anti-submarine weapon (ASW) is any one of a number of devices that are intended to act against a submarine and its crew, to destroy (sink) the vessel or reduce its capability as a weapon of war. In its simplest sense, an anti-submarine weapo ...

system, which uses rocket-thrown depth charges. It was developed by the

Norwegian Defence Research Establishment The Norwegian Defence Research Establishment (''Forsvarets forskningsinstitutt'' – ''FFI'') is a research institute that conducts research and development on behalf of the Norwegian Armed Forces and provides expert advice to political and mi ...

(FFI) in cooperation with the U.S. Navy in the late 1940s-early 1960s. The Terne development project consisted of three phases: Terne I : Development of a rocketborn depth charge. Terne II: Development and construction of a landbased ASW for naval defense. Terne III: Development and construction of a shipborne ASW. A Terne III weapon system consists of a search & track sonar, a fire-control system and the rocket launchers, which can store six salvos of six rockets each. The rocket itself, is a depth charge with multiple fusing modes (preset time after water entry, proximity, or contact), which is propelled through the air by a solid-fueled rocket motor. When the

sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on o ...

detects a target, the fire-control system can fire a rocket salvo to place a string of depth charges apart, perpendicular to the target's course.

User countries

* (Phased out) * (Phased out) * (Phased out)

References

{{Reflist Weapons of Norway Cold War anti-submarine weapons of the United States Cold War weapons of Germany Naval weapons of Germany

User countries

See also

References