The article is dedicated to ocean liners, the ambitious projects of the 1930s. The Interwar period was the golden age of transatlantic shipping, primarily due to technical improvements, for example, increased engine power and changes in ship hull shape. However from an artistic point of view, liners also proved to be an important field of application. Many European architects, sculptors, and decorators were involved in the design of the exterior of the liners and their interiors. Most of the masters who participated in the development of a special “liner style” were practitioners of art deco. The spectacular, varied art deco proved to be the most appropriate style, corresponding to the problems which had been set before the artists by the client companies. The subject of the research is to identify the relationship between the “liner style” of the 1930s and art deco, determining the place of the transatlantic liner projects in the culture of the XX century. The object of the research is the design conceptions in general, as well as works of art in the interiors of the liners. The author’s aim is to demonstrate the high importance of these projects for the understanding of the Art Deco era, to characterize the complex approach of masters to the design of liner exteriors and interiors, to consider and compare the most outstanding design solutions. The research methodology includes historical and descriptive, comparative methods, cultural, historical, and culturological approaches. The main attention in the article is given to the French “Normandy”, a recognized example of this style. To expand the context and the possibility of generalization, the focus is also made on two English liners: “Queen Mary” and “Queen Elizabeth”. Among the artists the author points special attention to a French master, Jean Dunant. Dunant’s panels made for the Normandy cigar lounge are considered examples of a decorative style, inspired by the exoticism of archaic or Oriental cultures.