Lt.Commander Arjun Varma

Rana Daggubati

Captain Rann Vijay Singh

Kay Kay Menon

Dr. Ananya

Taapsee Pannu

Lieutenant Commander Santosh Devraj

Atul Kulkarni

Admiral Indian Navy

Om Puri

K.T.Raman, Vice Admiral Indian Navy

Nassar

Rajeev Thakur, Sonar Operator S21

Satyadev Kancharana

Narrator (Voice)

Amitabh Bachchan

Commander Razaq Mohd Khan, Ghazi

Rahul Singh

RAW Agent

Milind Gunaji

Kamalakar Shinde, Battery Operator S21

Ravi Varma

Lt.Nilesh Mishra, Radio Operator S21

Priyadarshi Pullikonda

Narrator

Chiranjeevi

B.Sanjay S21

Bharath Reddy

Indian Cook Iqbal

Ramanuj Dubey

Kapil Singh

Kunal Kaushik

V.Murthi, Depth Controller, S21

Thiruveer

Pakistani Naval Commander

Rajiv Kachroo

Navigation Officer, Ghazi

Jay Jha

Navy Staff

Bikramjeet Kanwarpal

Taan Singh, Torpedo Operator S21

Captain S N Ahmed

N.Tiwari, Steering Controller S21

Niteesh Pandey

Ranjan Sengupta

Malyaban Lahiri

INS S 21 Navigation Officer

Akshay Mittal

INS S 21 Radio Operator

Priyadarshi Pulikonda

Ram Sagar S21

Naren Yadav

Ravi Kumar Shada