In 1967, the first submarine ship INS Kalvari, joined the Indian Navy, was withdrawn by completing 30-years of service in 1996.

Subsequently, the new submarines were decided to be manufactured in India. Accordingly, France's company 6 submarines are being prepared with the company 'Make in India' project.

The first submarine was named INS Kalvary, and the trial was held on April 6, 2015. Following successful trials were dedicated to the country today.

Prime Minister Modi, Defense Minister Nirmala Sitharaman, Maharashtra Chief Minister Devendra Bhadnavis, Governor Vidyasagar Rao and others in this event.

The submarine ship is 67.5 meters long and 12.3 feet tall. This includes sophisticated technologies.

The submarine, capable of utilitarianly utilizing, has the ability to easily escape from enemy radar then launch missiles from the deep.