SeaRAM

A SeaRAM starter

SeaRAM is a short-range defense system (CIWS) for defense against anti-ship missiles and air targets. It is used by the US Corporation Raytheon produces.

description

SeaRAM was designed to replace the pipe-based Phalanx CIWS with a more effective guided missile- based system . For this purpose, the 20-mm Gatling gun of the type M61 Vulcan was replaced by eleven guided missiles of the RIM-116-RAM-Block-1 system. The location and fire control electronics are at the stand of Phalanx Block 1B (Ku-band radar and FLIR device), whereby the radar system has been modernized and an additional ESM system can be integrated. With this sensor package, SeaRAM can work almost completely autonomously. The carrier ship only has to provide electricity and cooling water. However, the system can also be connected to the ship's combat system by means of several interfaces ( NTDS , MIL-STD-1553 and FDDI ), whereby the efficiency can be increased considerably, especially in the vicinity of numerous targets and electronic countermeasures . The dimensions and electronic components are designed so that the system can replace an existing Phalanx cannon with little effort.

The first pre-production model was tested on board the British destroyer HMS York in 2001 . In March 2008, the final model for integration on board the USS Independence was delivered. On March 4, 2016, the SeaRAM was successfully tested on the USS Porter (DDG 78).

Technical specifications

Starting system

• Weight:
  • Above deck: 7030 kg
  • Below deck: 715 kg
• Elevation : - 10 ° to + 80 °
• Azimuth : +/- 155 °
• Turning radius: 3.48 m
• Capacity: 11 guided missiles

Search and fire control sensors

• Radar:
  • Frequency range : 12-18 GHz (Ku band)
  • Tracking accuracy : 2-3 mrad
  • Operating modes: MTI , pulse / Doppler, monopulse
• FLIR:
  • Frequency range: 2.5–38 THz (8–12 µm ; infrared )
  • Tracking accuracy: 0.01-0.05 mrad
• ESM (optional)

RIM-116B guided missile

• Takeoff weight: 73.5 kg
• Length: 2.83 m
• Diameter: 12 cm
• Wingspan: 43.75 cm
• Propulsion: single-stage solid rocket
• Speed: approx. Mach 3
• Range: 5–8 km
• Steering: passive radar, IR / UV viewfinder
• Warhead: Laser proximity fuse, 10 kg HE

Web links

• Brochure from the manufacturer (Raytheon) ( Memento from December 2, 2006 in the Internet Archive ) (PDF; 174 kB)
• Deagle.com

Individual evidence

1. ^ USS Porter Conducts First SeaRAM Firing from DDG US Navy website. Retrieved March 14, 2016