Wiktionary
propellerless
a. Without propellers.
Usage examples of "propellerless".
A man at the taffrail could look down the transom and see the rudder standing half above the water, with the stub of the propellerless shaft just awash.
It was wingless, propellerless, apparently buoyed up by some kind of device unknown to the science of his day.
It is propellerless, and supposedly capable of speeds approaching nine hundred kilometers per hour.