Recently DRDO has announced where to test nuclear missile K-4 -

The missile will be test fired from an underwater platform on 8 November and is the second underwater missile in the country. The country's first underwater missile, named BO-5, has a range of 700 km. Defense Research and Development Organization (Defense Research and Development Organization) Establishment - 1958, Headquarters - New Delhi, President - G. Satish Reddy.