AK-630

The design of the AK-630 CIWS was initiated in 1963, with the first operational prototype completed in 1964. Trials of the complete system, including radar and controls went on until 1976 when the system was accepted for service.^[13]

AK-630M

During the deployment of the system, numerous problems that did not appear in trials were exposed in its application, and some modification of the original AK-630 was made to correct these problems, and in 1979, the new system was named as AK-630M and was accepted into service.^{[citation needed]}

AK-306

A derivative of AK-630M was developed for light craft and this system was named as AK-306. Externally, the air-cooled AK-306 can be distinguished from the AK-630 by the absence of the water cooling system (a cylindrical jacket that surrounds the barrel cluster of the AK-630). Internally, the AK-306 (A-219) used electricity to power the automatics, instead of using the exhaust. This version also lacked radar control, being only optically guided, hence making it less of an anti-missile weapon and more of a surface-to-surface weapon, and the designation of the overall system is consequently changed from A-213-Vympel-A to A-219. The design started in 1974 and the system was accepted into service in 1980. When production was completed in 1986, 125 systems were in service.^[14]

AK-630M1-2

In 1983, a decision was made to update the design and modify the AK-630 system to include a second gun mounted above the first, which provides 10,000 rpm in total. The AK-630M1-2 "Roy" was roughly the same size and weight allowing installation in existing AK-630 mounts. Though the system proved to be successful, the AK-630M1-2 Roy was not accepted for production due to the maturity of a combined missile and gun system, then designated the 3M87 Kortik, but later called Kashtan. The single example of AK-630M1-2 Roy remains installed on the Project 206.6 class missile boat # P-44.^{[citation needed]}

AK-630M2

In July 2007 at IMDS-2007, a modernized version of the AK-630M1-2 called AK-630M2 with two AO-18KD rotary cannons was showcased by OAO AK Tulamashzavod under the new name "Duet". Visually "Duet" differs from "Roy" in having a new mount with a stealthy low RCS design compared with the more traditional rounded AK-630 mounts.^[15]

In 2012 it was announced that the new Ivan Gren-class landing ship would be armed with the modified AK-630M2 system.^[16] It is also used by the Buyan-M-class missile corvette.^[17]

H/PJ-13

H/PJ-13 is the Chinese upgraded version of AK-630M. The most obvious visual difference between AK-630 and its Chinese cousin H/PJ-13 is that the latter has a stealth turret.^[18] Instead of MP-123-02 fire-control radar originally used on AK-630M, a modified version of Type 347 radar is used.^[18] The original electro-optical system of AK-630M is also replaced by domestic Chinese system ZGJ-1B,^[18] and the fire control system is replaced by domestic Chinese ZFJ-1A fire control system.^[18] To improve its anti-missile capability, Chinese have also developed APDS round for H/PJ-13 to supplement/replace the original high explosive round of the AK-630M.^[18]

Kamand

The Kamand is an Iranian CIWS based on AK-630 to counter anti-ship missiles and low flying aircraft. The Kamand gun system is able to hit airborne targets at a range of two kilometres firing projectiles at a rate of 4,000 to 7,000 rounds per minute. The said system is installed on some Iranian naval ships like Alborz and Sahand frigates.^[19]

Current operators

•  Algerian National Navy on Steregushchy-class corvette
•  Bulgaria
•  Cameroon
•  People's Republic of China^[20]
•  Croatia
•  Cuba
•  Egypt
•  India^[1][20]
•  Indonesia
•  Iran^[19]
•  Greece
•  Kazakhstan
•  Kenya
•  Myanmar
•  North Korea
•  Pakistan
•  Poland^[1]
•  Romania
•  Russia^[1][20]
•  Slovenia^[20]
•  Ukraine^[20]
•  Vietnam
•  Yemen

Former operators

•  East Germany^[1]
•  Germany
•  Soviet Union^[1][20]