The names of all in service ships and naval bases of the Indian Navy are prefixed with the letters INS, designating Indian Naval Ship or Indian Navy Station, whereas the sail boats are prefixed with INSV (Indian Naval Sailing Vessel). The fleet of the Indian Navy is a mixture of domestic built and foreign vessels, as of January 2018, the surface fleet comprises 1 aircraft carrier, 1 amphibious transport dock, 8 Landing ship tanks, 11 destroyers, 13 frigates, 23 corvettes, 10 large offshore patrol vessels, 4 fleet tankers, 7 Survey ships, 1 research vessel, 3 training vessels and various auxiliary vessels, Landing Craft Utility vessels, and small patrol boats.
After INS Viraat was decommissioned on 6 March 2017, the Navy is left with only one aircraft carrier in active service, INS Vikramaditya, which serves as the flagship of the fleet. Vikramaditya (formerly Admiral Gorshkov) is a modified Kiev-class aircraft carrier procured at a total cost $2.3 billion from Russia in December 2013. The Navy has an amphibious transport dock of the Austin class, re-christened as INS Jalashwa in Indian service. It also maintains a fleet of landing ship tanks.
The navy currently operates three Kolkata, three Delhi and three Rajput-class guided-missile destroyers. The ships of the Rajput class will be replaced in the near future by the next-generation Visakhapatnam-class destroyers (Project 15B) which will feature a number of improvements.
In addition to destroyers, the navy operates several classes of frigates such as three Shivalik (Project 17 class) and six Talwar-class frigates. Seven additional Shivalik-class frigates (Project 17A class frigates) are on order. The older Godavari-class frigates will systematically be replaced one by one as the new classes of frigates are brought into service over the next decade.
Smaller littoral zone combatants in service are in the form of corvettes, of which the Indian Navy operates the Kamorta, Kora, Khukri, Veer and Abhay-class corvettes. Replenishment tankers such as the Jyoti-class tanker, INS Aditya and the new Deepak-class fleet tanker- help improve the navy's endurance at sea