What does the term 'stern drive' refer to?

The term 'stern drive' refers specifically to a type of propulsion system for boats that combines elements of both inboard and outboard engines. This system is installed through the transom, the back part of the boat, allowing the engine to be housed within the boat while the drive unit, which includes the propeller, protrudes below the waterline. This design provides the motorist with the benefits of improved handling and acceleration while maintaining a sleek appearance.

In contrast to an inboard propulsion system, which often has a more complicated setup and requires a separate outdrive, the stern drive offers a more streamlined option that is both powerful and efficient. The option regarding a jet propulsion system refers to a different mechanism common in certain types of boats, while sailboats and devices for raising sails do not utilize any engine propulsions, making them unrelated to the operation of stern drives.