What is the main function of an impeller in a vessel?

The primary function of an impeller in a vessel, especially in the context of a jet propulsion system, is to pump and force water under pressure through a steering nozzle. This creates thrust, propelling the vessel forward. The impeller achieves this by spinning rapidly, drawing in water from the hull and expelling it forcefully through the nozzle. This mechanism allows for efficient propulsion and maneuverability, as the direction of the water jet can be adjusted to steer the vessel.

The impeller plays a crucial role in jet drive systems, which are particularly popular in small boats, personal watercraft, and certain recreational vessels. The design enables quick acceleration and the ability to operate in shallow waters, where traditional propellers may not be feasible. Understanding the role of the impeller in maneuvering the vessel highlights the importance of propulsion technology in boating.