The vessel was made with the help of Russia and the crew staff was also trained by Russian officials.
The vessel weighs 6,000 tons and is capable of launching nuclear ballistic missiles.
The submarine was under trials since February and it also launched ballistic missiles from a depth of 20 meters under the water.
Vice Admiral of Indian Navy H.C.S. Bisht said “INS Arihant is now undergoing sea acceptance trials as it had already passed several deep sea diving drills. The submarine will be commissioned after completing all the sea trials.”
The submarine is capable of carrying four K-4 missiles or 12 short-range K-15 missiles.
Bisht claimed that 45 more vessels are under construction at different shipyards of the country that will further strengthen the defence system of the country.
Dozens of Indian workers have lost their lives in technical incidents during preparation of these vessels.
A submarine completely exploded in August last year at Mumbai’s dockyard that caused casualties of 18 sailors who were on the board.