This movie has shown , how realistic a movie can be made. Its an underwater war film, based on true events of 1971 India pak war. But isis specially focused on an unprecedented war between Indian S21 and Pakistan Ghazi. This movie is om puri’s last movie. He played the role of naval officer of headquarters. Rana dugabbati has also played role of Indian naval officer , who went with S21 in sea for unclassified mission. The movie is full of action and thriller. Tapsi pannu has got a little role and she is refugee who left bangladesh. She is a doctor in movie. Everybody has done their best to make the movie superhit. You can watch this movie for 3 times , without getting bor. Must watch.!