Kashtan air defence gun/missile system is designed to provide self-defence of surface ships and ground-based facilities from airlaunched precision-guided weapons, including sea-skimming anti-ship missiles, fixed- and rotary-wing aircraft, as well as to engage smallsize sea targets.

Composition:
• combat module
• surface-to-air missiles
• command and control module
• ground support equipment

Features
The command and control module serves to detect and classify aerial (including low-flying) and stationary targets, to track, to distribute and to designate them to combat modules. The combat module consists of a gun/missile unit, radar and optical fire control systems, computer system and power supply unit. It utomatically receives target designation data, tracks and engages targets with missile and artillery fire.

Normally, the ship can be armed with one to six combat modules depending on its displacement and self-defence capability required. On large-displacement ships each combat module can be completed with a storage/loading system with a 32 SAM capacity.

9M311-1 two-stage solid-propellant SAM features a fragmentation rod warhead with a proximity fuse. Missiles are housed in transport- launch containers ensuring their safe handling and reliability.

The gun mount comprises two 30mm sixbarrel GSh-6-30K rapid-fire cannons with a linkless ammunition feed and evaporative cooling system. The integrated control system simultaneously tracks targets and guides missiles onto them via its radar and TV/optical channels.

Kashtan ADGMS also comprises a belowdeck storage/loading system (capacity - 32 SAMs, four-missile launch unit is loaded within 1.5 min). Kashtan system ensures efficient self-defence of the carrier-ship thanks to high probability of interception of approaching air targets at longer distances (8,000 m to 1,500 m) with missiles, and a follow-on engagement of survived targets at a close-in range (1,500 to 500 m) with gunfire.

Fully automated combat operation of the system (from target acquisition till engagement) allows it to engage up to five targets a minute. Kashtan ADGMS can be installed on ships displacing 400-plus tonnes.

Variants:
Kashtan: Basic, original version
Kashtan-M: Improved version. All Russian navy active ships using Kashtan will have their system upgraded to Kashtan-M standard. Kashtan-M improvements include:

• Dedicated targeting station
• Salvo launch capability
• Upgraded guns with higher muzzle velocity (GSh-6-30K vs. GSh-6-30KD) with longer gun range (4 km vs. 5 km)
• Upgraded missile range (8 km vs. 10 km) and engagement altitude (3.5 km vs. 6 km)
• Increased reaction timing (6-8 sec vs. 5-7 sec)
• Sensor modularity (radar+optics, only radar, only optics)
• Lower weight (9.5 tons vs. 7.5 tons vs. 5.5 tons (on the optics-only version))  

• Reliable protection from small-size air targets and high-precision weapons
• Increased SAM target kill envelope
• Salvo firing capability against most critical targets
• Full automation of combat operations
• All-weather multi-band integrated control system
• Integration of missile/gun armament and control system in a single CM.
  

• Command module with 3-D target detection radar
• Combat modules (up to six)
• SAM storage and reloading system (SRS)
• Control-and-recording equipment
• Surface to air missile
• 30mm round
• Basic maintenance facilities
• Training aids