Which component of the boat rotates to provide power?

The propeller is the component of the boat that rotates to provide power. When the engine of a boat runs, it generates power that is transmitted to the propeller. As the propeller spins, it creates thrust by pushing water behind it, allowing the boat to move forward or backward through the water. This rotating motion is essential for propulsion, making the propeller a critical part of both powerboats and some sailing vessels.

In contrast, a cleat is a fitting on the boat used for securing lines and does not generate movement; it merely serves a functional role in mooring. The gunwale refers to the upper edge of the boat’s sides, and it also does not provide power but serves structural and safety purposes. The hull is the main body of the boat that provides buoyancy and stability, but it does not rotate or create propulsion on its own. Thus, the propeller is uniquely responsible for providing the power that drives the boat forward.