In the beginning of the XX century, steamships were crossing the Atlantic Ocean. Each one of them could carry 2000 passengers for a 15-days trip between Europe and America, and in these days it became for them a sort of new house.
The image of all these people living, loving, fighting, making business, all in this big floating superstructure entered the social imagery of the time and little by little, more and more nautical elements were integrated into architecture.
In the first buildings, this integration was limited to decorative elements, as we can see in the examples here below.
A tipycal steamship’s deck (image: wikipedia).
Mies van der Rohe, house in Weissenhof, Stuttgart, 1927 (image: wikipedia). Note the stairway parapets, directly inspired from the Steamship’s deck.
Giuseppe Terragni, Casa del Fascio, Como, 1936 (image: wikipedia). while the image of the buildings recalls steamships’ multiple decks, its plan still recalls renaissance palaces.