Question 324General Subjects - Assistant Engineer

The correct answer is D) Cycloidal propeller. The Voith Schneider drive is a type of cycloidal propeller, which uses rotating blades in a circular arrangement to provide propulsion. This type of propulsor is distinct from a ducted propeller (A), tandem propellers (B), or a vane wheel (C). The cycloidal propeller design allows for precise maneuvering and high thrust, making it a common choice for vessels that require excellent low-speed handling, such as tugboats and ferries. Understanding the proper terminology for different propulsor types is essential for correctly answering US Coast Guard Captain's License Examination questions.