A movie musical variety show that features a race between two ocean liners, the Colossal and the Gigantic both represented in the film by miniatures. The Colossal is based on the Normandie while the Gigantic is a futuristic (for the late 1930's) art deco design that features a series of propellers arranged along each side.
Another Art Deco sci-fi design appears in the film in the shape of a flying scooter equipped with fold out wings and a rear mounted propeller, that WC Fields' character flies out to the Gigantic.
The visual effects were supervised by Gordon Jennings.
The whole film can be seen on Youtube.