Water-jet propulsion systems use the force of water expelled through a nozzle to propel a vessel forward.

The process begins by drawing water from underneath the boat through an intake. This water is then forced at high pressure before being ejected out of a directional nozzle at the stern of the vessel.

The nozzle controls the direction of the expelled water, which steers the boat. This steering mechanism allows for enhanced manoeuvrability, as the redirection of the water jet enables the vessel to turn smoothly and quickly in various directions.

The effectiveness of water-jet propulsion lies in its ability to provide both forward thrust and steering control, making it a popular choice for high-speed boats, shallow-water craft, and applications where agility is crucial.