What kind of motor is used with a stern drive?

A stern drive uses an inboard motor that is mounted inside the boat and connected to an outdrive unit that is positioned at the stern (rear) of the vessel. This setup allows for efficient propulsion and steering, providing the advantages of both inboard and outboard motors. The inboard motor typically drives a propeller via a lower unit that extends into the water, which is essential for the effective operation of the boat in various waters.

Other options cannot be associated with a stern drive system: a jet drive uses a different mechanism to propel the boat, relying on water propulsion rather than a propeller; an outboard motor is mounted externally and not integrated like a stern drive; a sailboat engine typically refers to auxiliary engines used in sailboats, which are not relevant to stern drive systems. Understanding stern drives and their components is crucial for safe and effective boating practices.