Which of the following propulsor types represents the proper terminology for a Voith- Schneider drive?

Correct Answer: Option D — Cycloidal propeller

The Voith-Schneider drive utilizes vertical blades rotating around a central axis, with variable pitch control to provide omnidirectional thrust. This mechanism is technically defined as a cycloidal propeller. It offers exceptional maneuverability for vessels like tractor tugs, allowing for precise control without the need for a rudder.