Kelsey Grammer has an "idea" for a sequel to Down Periscope - despite the movie not being a huge success.
The 1996 comedy-slapstick film - which saw Grammer, 70, lead as Navy Lieutenant Commander Tom Dodge, who is tasked with restoring a junked World War II-era submarine for a war game with a disorganized crew - has an 11 per cent approval rating on Rotten Tomatoes, and only generated $37.5 million against its $31 million production budget.
