Chennai, which was commissioned in Mumbai on the same day, is the navy's third Kolkata platform, and the last Project 15A variant in the class.
According to IHS Jane's Fighting Ships, Chennai is 163.95 m long, 17.71 m in beam, and has a 5.4 m draught. It has a top speed of 32 kt, and a standard range of 4,500 n miles at 18 kt.
With a prominent anti-submarine warfare (ASW) capability, the ship's submarine prosecution capacity is provided by indigenously developed twin-tube torpedo launchers, Russian made RBU-6000 rocket launchers, and the HUMSA-NG hull-mounted sonar.
IHS Jane's reported on 21 November that the platform is entering service without its Atlas Elektronik low-frequency Active Towed-Array Sonar (ACTAS) system, although this is expected to be fitted "soon", according to Indian Navy spokesperson Captain D K Sharma.
Upon completing further sea trials, Chennai will be homeported in Mumbai on India's western coast.