Type 730 CIWS

The Type 730 is a Chinese seven-barrelled 30 mm Gatling gun CIWS. It has a PLA-N designation H/PJ12. It is mounted in an enclosed automatic turret and directed by radar, and electro-optical tracking systems. The maximum rate of fire is 5800 rd/m, and the effective range is up to 3 km.

The system's primary purpose is defence against anti-ship missiles, and other precision guided weapons. However, it can also be employed against fixed/rotary wing aircraft, ships and other small craft, coastal targets, and floating mines. Though externally similar to the Dutch Goalkeeper in appearance, it is thought to operate indigenous radar and optical systems. Another reported source of technology was reported to be the French which had experimented with the same General Electric EX-83 mount for their CIWS requirements. Two systems, SAGEM's SAMOS and the Thomson-CSF's SATAN were under evaluation in October 1987. The SAGEM SAMOS system featured the EX-83 mount with a SAGEM VOLCAN optical director, while the Thomson-CSF variant was controlled with an off-board Castor IIJ fire-control radar. Photos of the prototype Type 730 unit under trial apparently shows a SAGEM VOLCAN EO director in place of the domestic OFC-3 EO director.

The gun is designed by the 713th (research) institute under the name 'Project 850' and is powered by two electric motors. The radar TR47C is a derivative of the EFR-1/LR66 J-band radar (NATO code name: Rice Lamp) by Xi'an Research Institute of Navigation Technology, but it is unclear that if this derivative is developed by the same institution. The OFC (Optical Fire Control)-3 electro-optical fire control system is designed by the Central China Optronic (electro-optical) Research Institute.

The TR47C radar operates in the same way of AN/APY-1/2 radar onboard E-3 Sentry in that the azimuth is scanned mechanically, while the elevation is scanned electronically, incorporating a total of 169 transceivers of phased array technology that enables the radar to pick up the splashes of 30 mm rounds. Like the western CIWS, the information is processed on site, via local computers of the radar and the gun mount, thus providing faster reaction time than the Russian design in which the radar and fire control system are separately located.

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Wikipedia