Bollywood actors Hrithik Roshan and Katrina Kaif were left in a state of shock when the boat in which they were travelling was hit by a storm.

The duo was returning after wrapping up the shoot of an action sequence of their upcoming film "Bang Bang" which is presently being filmed in Thailand.

According to The Times of India, the boat was hit by a four-and-half-feet wave making the vessel rock vigorously throwing the entire cast and crew, who were seated in the lower cabin of the boat, off the gear. The report did not mention any causalities.

Initially, Hrithik and Katrina were to shoot in Kashmir for the film but as the production house did not get the permission to shoot portions of the film there, the team headed to Thailand. Recently, it was reported that the actors had wrapped up the filming in Thailand and were to head to Greece for the next schedule.

Directed by Siddharth Raj Anand, "Bang Bang" is said to be the Hindi remake of Hollywood film "Knight and Day" starring Tom Cruise and Cameron Diaz. The film, that marks the reunion of Hrithik and Katrina on screen after "Zindagi Milegi Na Dobara", is slated for release on 1 May, 2014.

Both Hrithik and Katrina have been undergoing arduous workout sessions for "Bang Bang" as the actors have to perform some tough action stunts in the film.

"Hrithik has been spending a lot of time working on his body. Katrina too has taken up strenuous workout sessions. The movie is an action-thriller, so they both have to look the part," a source told Hindustan Times.

In addition, Katrina has decided to get tanned for her role in the film, to make a difference in her looks from another action film "Dhoom 3" in which she will be seen opposite Aamir Khan.