Filmmaker Karan Johar on Wednesday launched the trailer of India's first war-at-sea film 'The Ghazi Attack'.

"Here it is....the underwater WAR you did NOT know  about.... #TheGhaziAttack ....@dharmamovies #AAFilms http://bit.ly/TheGhaziAttackTrailer," KJo posted on his Twitter handle.

The theatrical trailer of Rana Daggubati and Taapsee Pannu starrer bilingual war drama "The Ghazi Attack" is an epic.

Directed by Sankalp Reddy, the film is tipped to be India's first submarine film which will be about the mysterious sinking of PNS Ghazi, a Pakistan deployed submarine.

The film is partially based on the book Blue Fish, penned by Sankalp himself.

While Rana will be seen as a naval officer, Taapsee will be playing a refugee.

 Megastar Amitabh Bachchan has lend his voice for the film.
 

The story is about an executive naval officer of the Indian submarine S21 and his team who remain underwater for 18 days.

Dharma Productions has acquired the theatrical rights of the film.

The Ghazi Attack, which also stars Om Puri, Kay Kay Menon, Kulkarni, will hit theatres on 17 February.

Here it is....the underwater WAR you did NOT know about.... #TheGhaziAttack ....@dharmamovies #AAFilms https://t.co/aFqkfuEZEg

— Karan Johar (@karanjohar) January 11, 2017