All at Sea () is a 2011 Italian comedy film, starring Gigi Proietti. It marked the directorial debut of , who also signed the script with his father Vincenzo Cerami. The film is intended as a sort of sequel of Sergio Citti's Casotto, which Cerami co-wrote with Citti in 1977.
The film is based on the funny bickering between two cousins Nino and Maurizio.