- 4 * MTU 12V 396 SE84 diesel engines
- 360 * battery cells
- DRDO PAFC Fuel Cell AIP (To be added in mid-life refit)
- C303/S anti-torpedo countermeasure system
- 6 * 533 mm (21 in) torpedo tubes for 18 SUT torpedoes or
- SM.39 Exocet anti-ship missiles
- 30 mines in place of torpedoes
INS Vagir (S25) is the fifth submarine of the first batch of six Kalvari-class submarines for the Indian Navy. It is a diesel-electric attack submarine based on the Scorpène class, designed by French naval defence and energy group Naval Group and manufactured by Mazagon Dock Limited, an Indian shipyard in Mumbai, Maharashtra.
The ship was launched on 12 November 2020.
The submarine inherits its name from INS Vagir (S41) which served in the Navy from 1973–2001.
Vagir, the fifth submarine in the Kalvari -class, started its maiden sea trials on 2 February, 2022. The ship is expected to be commissioned by Q4 2022.