Sunday, April 27, 2014

Indian Navy issues RFI for CIWS

The Indian Navy issued an RFI for the procurement of 20/30 mm Close in Weapon System on April 9. The goal is to procure approxtwenty five 20-30 mm CIWS with the following subsytems -
  1. A surveillance-cum-tracking radar
  2. An Electro Optical (EO) system
  3. Integrated SAM system
  4. A 20-30 mm caliber gun alongwithgun control system
Major requirements sought in the RFI include -
  1. Ability to search & track both sea & air targets over a 360° arc
  2. Ability to target sea-skimming missiles
  3. Fast switch ON capability
  4. Built in Camera & Thermal Imager
  5. Direct interface with ship's combat management system
Last date to respond is 30th May. For foreign vendors, the usual offset requirements apply.

Likely these CIWS systems are meant for the Vikramaditya carrier & the new Project 15A destroyers.

So what would be the best solution for Indian Navy ? Well here is the best CIWS available in market for grab.
  • The Phalanx CIWS

The Phalanx® CIWS advanced radar-controlled gun system provides superior defense against close-in air and surface threats.The Phalanx Close-In Weapon System is a rapid-fire, computer-controlled, radar-guided gun system designed to defeat anti-ship missiles and other close-in air and surface threats. A self-contained package, Phalanx automatically carries out functions usually performed by multiple systems -- including search, detection, threat evaluation, tracking, engagement, and kill assessment.

General Characteristics:

Primary Function: Anti-ship missile defense

Contractor:Raytheon Systems Company (formerly Hughes Missile Systems Company and purchased from General Dynamics Pomona Division in 1992)

Weight: 12,500 pounds (5,625 kg) - Later models: 13,600 pounds (6,120 kg)
Range @ 45 degrees -5,500 m
           Maximum effective range- 1,490 m
Gun Type: M-61A1 Gatling
Type of Fire: 3,000 rounds per minute - Later models: 4,500 rounds/min (starting 1988 production, Pneumatic Gun Drive)

Magazine Capacity: model 1B1: 1,550 rounds

Caliber: 20mm

Ammunition: Armor Piercing Discarding Sabot (APDS), Depleted Uranium sub-caliber penetrator. Penetrator changed to Tungsten 1988. Block 1B will incorporate the new Enhanced Lethality Cartridge with a heavier penetrator.

Sensors: Self-contained search and track radar with integrated FLIR.
Unit Cost : USD$ 7-8 million

  • AK- 630 M2 Duet

In July 2007 at IMDS-2007, a modernized version of the AK-630M1-2 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.

In 2012 ,it was announced that the new Ivan Gren-class landing ship would be armed with the modified AK-630M-2 system.

§  Gun Characteristics
30 mm/54 (1.2") AO-18
Ship Class Used On
AK-630M1-2 "Roy" 
   P-44 (Pr. 206.6) missile boat
3M87 "Kortik"
   CV Admiral Kuznetsov (Pr. 1143.5), BC Admiral Nakhimov (Pr. 1144), Neustrachimy (Pr. 1154) class frigates
Date Of Design
Date In Service
AK-630:  1976
AK-630M:  1979
AK-306:  1980
3M87:  1989
Gun Weight
AO-18 (for AK-630):  under 452 lbs. (under 205 kg) 
GSh-6-30K (for AK-630M1-2):  352.5 lbs. (160 kg)
Gun Length oa
64.13 in (1.629 m)
Bore Length
63.78 in (1.620 m)
Rifling Length
57.48 in (1.46 m)
Cost per Unit 
12 million$
Chamber Volume
Rate Of Fire
AK-630M 2:  10,000 rounds per minute 
Weight of Complete Round
1.834 - 1.839 lbs. (0.832 - 0.834 kg)
Projectile Types and Weights
HE-FRAG (OF-84) - 0.86 lbs. (0.39 kg)
FRAG tracer (OP-84) - 0.86 lbs. (0.39 kg)
Bursting Charge
HE-FRAG (OF-84) - 0.107 lbs. (0.0485 kg)
FRAG tracer (OP-84) - 0.026 lbs. (0.0117 kg)
Projectile Length
up to 11.54 in (293 mm)
Muzzle Velocity
All:  2,953 fps (900 mps)
3M87:  2,822 fps (860 mps)
Palash:  3,609 fps (1,100 mps)
Working Pressure
Approximate Barrel Life
AK-630:  8,000 rounds (automation resource) 
Ammunition stowage per gun

AK-630M 2:  4,000 rounds 


The system is designed for self-defense of ships and ground-based stationary objects against various air threats, including anti-ship missiles flying at extremely low altitudes, as well as for engagement of small-size seaborne and ground targets.
When firing against an anti-ship missile the hit probability is nearing 100% as the result of its engagement at three lines – twice by surface-to-air missiles and once by guns.
--High firing rate of guns with burst duration equal to 1,2 sec ensures effective destruction of targets before they reach 300-500 m line.


Well these are the best CIWS available in market which Indian Navy can look into,however out these, Indian Navy already a big time user of AK 630 and Kasthan.But they are from Soviet era and stands no where, when compare to New Generation CIWS from Russia.Also Indian navy,INS Jalshwa which was purchased from US has Phalanx CIWS but from older Generation lagging FLIR and new Gun.On Paper Kasthan M,(thanks to Missile-Gun Combo) is looking much better than any other CIWS. But we know how reliable and trusted Russian systems are.In Practical,Phalanx is the only battle tested system.

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