True as a Turtle is a 1957 British comedy film. It features John Gregson, Cecil Parker, June Thorburn, and Keith Michell.
Newlywed Tony Hudson offers his young wife Jane a cruise on a yacht as a honeymoon trip. Although Jane suffers from chronic seasickness, she accepts and one day they go on board the Turtle, a fine yacht owned by an industrialist friend, Dudly Partridge.