The Douglas World Cruiser (DWC) was developed to meet a requirement from the U.S. Army Air Service for an aircraft suitable for an attempt at the first flight around the world. The Douglas Aircraft Company responded with a modification of their DT torpedo bomber. Five of these aircraft were ordered for the round-the-world flight, one for testing and training and four for the actual expedition.
The DWC differed from the DT in having a greater fuel capacity for greater range. The cockpits for the pilot and crewman were also located more closely together. Like the DT, the DWC could be fitted with either floats or a conventional landing gear.