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Kolkata class

Guided missile destroyer

Kolkata class

The Kolkata class destroyer is armed with cruise missiles and packs a formidable punch

 
 
Country of origin India
Entered service 2014
Crew 390 men
Sea endurance ?
Dimensions and displacement
Length 163 m
Beam 17.4 m
Draught 6.5 m
Displacement, standard ?
Displacement, full load 7 400 t
Propulsion and speed
Speed 30 knots
Range 15 000 km at 18 knots
Propulsion COGAG propulsion system
Airwing
Helicopters 2 x Sea King or Dhruv
Armament
Artillery 1 x 76-mm gun, 4 x AK-630 close-in weapon systems
Missiles 32 x Barak-8 air defense missiles, 16 x Brahmos anti-ship and land-attack missiles
Torpedoes 4 x 533-mm torpedo tubes
Other 2 x RBU-6000 anti-submarine rocket launchers

 

   The Kolkata class, or Project 15A, of guided missile destroyers is a successor to the Delhi class. It is in service with the Indian Navy. These state-of-the-art vessels are steps towards India’s quest for a Blue-water navy. The Kolkata class comprises of 3 ships namely – INS Kolkata, INS Kochi, INS Chennai. All 3 named on the coastal cities of India. The INS Chennai is undergoing sea trials while the former 2 were commissioned with the Indian Navy in 2014 and 2015, respectively.

   The Project 15A was launched in 1986, following the approval of the cabinet committee as a follow-on class to Delhi class. By the year 2000, the Kolkata class was redesigned by Directorate of Naval Design including the modern stealth attributes. These destroyers have reduced radar cross section, although these are by no means true stealthy vessels. The contract for the detailed design and construction was awarded to Mazagon Docks Limited.

   The lead vessel of the Kolkata class was delayed by 4 years (to 2014) due to technical faults found out during the sea trials. However, the faults were rectified and INS Kolkata was finally commissioned 2014. The follow on ship, INS Kochi, was commissioned in 2015.

   The vessels are operated by a crew of 390 and can house two helicopters, either HAL Dhruv or Westland Sea King. Weapon systems include BRAHMOS nuclear capable supersonic cruise missiles with the speed of 2.8 Mach (3 457 km/h). These are packed in two 8-cell vertical tubes. Also there are Indo-Israel jointly developed Barak-8 air defense missiles. These have a range of up to 90 km. In total, each ship has 32 Barak-8 missiles and 16 BRAHMOS missiles.

   Apart from this, vessels have anti-submarine rocket launchers and 533 mm torpedoes, Close-In Weapon Systems (CIWS) for last ditch defense against incoming anti-ship missiles, machine guns and a single 76 mm Oto Melara artillery gun.

   It also has various electronic counter measures such as Deseaver Mk.2 counter-measures systems and defensive aids suite, including indigenous Kavach decoys. These warships use Thales air search radar to keep an eye on the airspace along with IAI EL/M-2248 MF-STAR S-band AESA multi-function radar and indigenously developed HUMSA-NG bow sonar and nagin towed array sonar. The software package includes an advanced combat management system.

   These warships are driven by a Combined Gas and Gas (COGAG) system. It included two Zorya M36E gas turbine plants with four DT-59 reversible gas turbines and two RG-54 gearboxes. Also there are two Bergen KVM diesel engines, developing 9 900 shp each. This machinery is capable of taking the vessel to the speed of 30 knots.

   Construction of the Kolkata class ships faced constant cost overruns. Currently the warship costs around US $950 Million each to the government with the total project after escalations is about US $2.8 Billion.

 

Name Laid down Launched Commissioned Status
INS Kolkata (D63) 2003 2006 2014

active, in service

INS Kochi (D64) 2005 2009 2015

active, in service

INS Chennai (D65) 2006 2010 Expected in 2016

sea trials

 

Rahul Singh Dhari

   Article by RAHUL SINGH DHARI

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Kolkata class

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Kolkata class

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Kolkata class

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Kolkata class

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Kolkata class

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Kolkata class

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