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Kongsberg RGM-184 NSM

The NSM (Naval Strike Missile) was developed by the Norwegian company KDA (Kongsberg Defense & Aerospace) as a multi-porpose anti-ship and land-attack missile. Production for the Norwegian Navy started in 2007.

In 2018, the U.S. Navy announced, that it will acquire the NSM as the over-the-horizon anti-ship weapon for its Littoral Combat Ships (LCS). The designation of the missile in USN service is RGM-184A. The American prime contractor for NSM is Raytheon, which builds the missiles and launch containers under license from KDA.

The RGM-184A has low-observable characteristics, and over water it can fly very close to the surface (sea skimming) to further reduce the chances of detection. It is launched from a container using a jettisonable rocket booster, and is turbojet-powered for the remainder of the mission. For navigation, it is equipped with a GPS-aided INS (Inertial Navigation System), a laser altimeter and a TERCOM (Terrain Contour Matching) system. For terminal precision guidance and homing, the missile has an IIR (Imaging Infrared) seeker and an onboard target database.

Photo: KDA

The RGM-184B NSM Block 1A is an improved version with a new engine, upgraded technology and some performance improvements, incl. a higher range.


Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!

Data for RGM-184A:

Length3.96 m (13 ft) (w/o booster)
Wingspan1.37 m (4.5 ft)
Weight350 kg (770 lb) (w/o booster)
SpeedMach 0.93
Range200 km (120 miles)
PropulsionMicroturbo TRI-40 turbojet; 3.3 kN (750 lb)
Booster: Solid-fueled rocket
Warhead120 kg (260 lb) penetrating blast-fragmentation

Main Sources

[1] Wikipedia: Naval Strike Missile

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Last Updated: 2 January 2024