Tennessee Boating License Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

A four-stroke engine is characterized by its operational cycle, which includes four distinct strokes: intake, compression, power, and exhaust. This type of engine is more fuel-efficient and produces fewer emissions compared to its two-stroke counterpart.

Outboard engines are commonly available as four-stroke engines due to advancements in marine technology and environmental regulations that encourage cleaner and more efficient engines. They are designed to be mounted on the outside of the boat, making them easier to access for maintenance and heightening maneuverability.

Inboard engines, stern drives, and jet drives can also be found in four-stroke configurations, but outboard engines have become particularly synonymous with this type of engineering due to their popularity and the variety of models available in the market. This makes them a representative choice for a four-stroke engine type in the context of recreational boating.