The centrepiece of the Indian carrier battle group is currently the INS Viraat, an updated Centaur class light carrier originally built for the Royal Navy as HMS Hermes, which was laid down in 1944 and commissioned in 1959. It was purchased by India in 1986. India will commission a second aircraft carrier, INS Vikramaditya, in 2012 and will follow this with a third carrier, INS Vikrant 2, in 2015. Whilst INS Vikramaditya is a former Soviet Kiev class carrier, the Admiral Gorshkov, the Vikrant will be the first indigenous Indian aircraft carrier. India eventually will have 2 Carrier battle groups by 2017.[4][5]
The Indian Navy's CBG usually consists of two destroyers (usually of the Delhi Class, previously Kashins were used) and two or more frigates, (usually a combination of Brahmaputra, Talwar or Shivalik class) and one support ship.[citation needed]