Indigenous AIP system for Indian Navy's diesel-electric submarines achieves key milestone with inauguration of Setting to Work Phase-2 Activity

The indigenous Air Independent Propulsion (AIP) system Energy Module achieved the Setting to Work Phase-2 milestone, boosting underwater endurance for Indian Navy diesel-electric submarines.

• The inauguration took place at Larsen and Toubro's AM Naik Heavy Engineering Complex in Hazira, Gujarat on October 24, 2026.
• Defence Secretary Shri Rajesh Kumar Singh attended the ceremony virtually, while Vice Admiral B Sivakumar and Dr R Balamuralikrishnan attended in person.
• The AIP Energy Module will be tested rigorously before being handed over to Mazagon Dock Shipbuilders Limited for integration on Kalvari-class Submarines in early 2027.