Ornithopters, also commonly refered to as 'thopters, were the most common small transport vessels in the Imperium. These ships were capable of carrying 6 passengers, 9 if the back seats were removed.

'Thopters were also very versatile. While they were capable of space travel over short distances, these small vessels were mostly operated in planetary atmospheres. Their uses varied from human transport between cities and continents, to light cargo transport across long distances.

'Thopters were often used for military purposes and equipped with weaponry. Usually these weapons were lasguns, but they could also carry small missiles and repeating maula pistols. With the exception of the planet Arrakis, and for heavier cargo transportation, most ornithopters were equipped with shields.

Most 'thopters were winged vessels that were capable of flight through jet propulsion, as well as by mimmicking the movements of birds. While the jets were the primary propulsion system, the wings assisted in maintaining altitude, as well as maneuvered the vessels.

Carryalls were essentially large ornithopters.