Stating that Verma should not go ahead with the release of the film, boat owner Hiralal Masani in the legal notice said that, "Registration of Kuber was made at Porbandar port and the film director has used the name and registration number without permission."
The film is based on Mumbai terror attack in November 2008 where 10 Pakistan-based terrorists used 'Kuber' to reach Mumbai after hijacking the boat in the high seas.
The notice said that, "Showing Kuber boat in the film will defame our reputation and therefore the film should not be released."
Verma had earlier sought permission from the owner to use the boat's name and its registration number in the film, but it was not granted.
Verma could not be contacted for his comments.