What is the function of struts in a propulsion system?

The function of struts in a propulsion system is to support the shaft and provide alignment. Struts are critical components that help maintain the position and stability of the propulsion shaft as it runs from the engine to the propeller. Proper alignment is essential for the efficient transfer of power, as misalignment can lead to increased wear and tear on the bearings and other components of the propulsion system. By ensuring that the shaft is properly supported and aligned, struts help to optimize the performance and longevity of the system, reducing potential maintenance issues that could arise from improper alignment.

While other choices address different components and their functions in a boat’s operation, they do not accurately describe the primary role of struts. For instance, increasing boat speed, connecting the engine to the hull, and stabilizing the boat in rough waters are important functions, but they pertain to other aspects of marine engineering rather than the specific role that struts play in the propulsion system.