Well the Eastern Naval Command of the Indian Navy is one of its three major formations.

It uses Visakhapatnam as its headquarters, and has bases there and at Kolkata.

It is the first and the largest naval command in India

The Eastern naval Command has the states of Andhra Pradesh, Orissa, West Bengal and Tamil Nadu, and the island chain of Andaman and Nicobar under its area of responsibility


East Indian Navy bases

Base
City

INS Circars
Visakhapatnam

INS Dega
Visakhapatnam

INS Virbahu
Visakhapatnam

INHS Kalyani
Visakhapatnam

INS Kalinga
Visakhapatnam

INS Eksila
Visakhapatnam

INS Karna
Visakhapatnam

NS Adyar
Chennai

INS Parundu
Uchipuli

INS Kattabomman
Tirunelveli

INS Tuticorin
Tuticorin