INS Khanderi ​is India's second Scorpene-class attack submarine​​ commissioned into the Indian Navy under the P-75 project. It was commissioned by Defence Minister Rajnath Singh on Saturday at a dockyard in Mumbai along with the first of India's P-17 Shivalik-class frigate Nilgiri and the aircraft carrier drydock into the Indian Navy during the ceremony

from Times of India https://timesofindia.indiatimes.com/india/rajnath-commissions-ins-khanderi-attack-submarine/articleshow/71345516.cms