• Not on view

The outboard propeller, designed by the Aluminum Company of America (Alcoa), is a marine propeller, a type of screw with two or more blades that propels an object through air or water when spun by a motor. This propeller was designed for use on a boat. When the motor spins, the screw rotates, causing its blades to push water back and down. Water then fills into the space left by the blade, propelling itself—and the boat it is attached to—forward.

The outboard propeller is made of aluminum, a metal used to create objects as diverse as airplanes, canteens, chairs, trains, cookie sheets, bicycles, and walkers. It is both ductile and malleable, which means that it can be pulled into thin wire and rolled into foil.

Aluminum Company of America, Pittsburgh, Pennsylvania
8 × 2 3/4" (20.3 × 7 cm)
Gift of the manufacturer
Object number
Architecture and Design

If you would like to reproduce an image of a work of art in MoMA’s collection, or an image of a MoMA publication or archival material (including installation views, checklists, and press releases), please contact Art Resource (publication in North America) or Scala Archives (publication in all other geographic locations).

MoMA licenses archival audio and select out of copyright film clips from our film collection. At this time, MoMA produced video cannot be licensed by MoMA/Scala. All requests to license archival audio or out of copyright film clips should be addressed to Scala Archives at [email protected]. Motion picture film stills cannot be licensed by MoMA/Scala. For access to motion picture film stills for research purposes, please contact the Film Study Center at [email protected]. For more information about film loans and our Circulating Film and Video Library, please visit https://www.moma.org/research/circulating-film.

If you would like to reproduce text from a MoMA publication, please email [email protected]. If you would like to publish text from MoMA’s archival materials, please fill out this permission form and send to [email protected].


This record is a work in progress. If you have additional information or spotted an error, please send feedback to [email protected].