Toroidal Propeller

A toroidal propeller is a type of marine propulsion system that uses a circular ring-shaped propeller, which surrounds the ship's hull. The propeller rotates around the ship, creating a circular current that propels the ship forward. This design allows for a more efficient and quieter propulsion system compared to traditional propellers, as well as improved maneuverability and reduced vibration. The toroidal propeller is commonly used in small to medium-sized vessels, including pleasure boats and some military craft.