On a Clear Day is a 2005 Scottish drama film written by Alex Rose and directed by Gaby Dellal.

It stars Peter Mullan as Frank Redmond, an engineer in the shipyards on the River Clyde, who becomes stagnant and quickly sinks into depression following his redundancy.

After completing the construction of the ship RFA Mounts Bay, Frank Redmond (played by Peter Mullan) and a few of his co-workers are laid off from the shipyards after 36 years service.

Frank trains with the help of friend and local chip shop owner Chan (Benedict Wong) and former co-workers Danny (Billy Boyd), Eddie (Sean McGinley) and Norman (Ron Cook) until he feels he is fit and ready for the attempt.

The Port of Dover was used for the scenes where Frank’s family and friends race to meet him in France at the end of his swim.