SeaRAM is an anti-ship missile defence system designed and manufactured by Raytheon. It offers improved ship self-defence and extended keep-out range capabilities in hostile combat environments.
The weapon system allows naval vessels to effectively engage high-performance, supersonic and subsonic threats including sea-skimming, anti-ship missiles, high-speed incoming vessels, rotary and fixed-wing aircraft, helicopters and other surface targets.
SeaRAM is an evolution of the MK15 Phalanx close-in weapon system (CIWS), which entered service in 1980.
http://www.naval-technology.com/projects/searam-anti-ship-missile-defence-system/