Answer: Visakhapatnam
Notes: The Kalvari Submarine Escape Training Facility, known as VINETRA, was commissioned at INS Satavahana in Visakhapatnam by Vice Admiral Rajesh Pendharkar. Visakhapatnam is the base for the Eastern Naval Command, a key formation of the Indian Navy. The city hosts vital naval facilities, including the Naval Dockyard, and plays a strategic role in India's maritime defence. VINETRA improves the escape skills of crew members from distressed Kalvari-class submarines. The facility supports India’s 'Aatmanirbhar Bharat' initiative, reflecting the country’s focus on self-reliance in defence technology.
