Into the Blue (1950)
Into the Blue is a 1950 British Comedy film directed by Herbert Wilcox and starring Michael Wilding, Odile Versois and Jack Hulbert. A couple hire a yacht for what they hope will be a relaxing cruise to Norway, but instead become involved with smugglers and end up going up the River Seine to Paris. It is also known as Man in the Dinghy.
More at Wikipedia.