An Outboard Motor is a propulsion system and self-contained unit comprising an engine, gearbox, and propeller or jet drive, designed to be mounted on the exterior end of a boat. Placed primarily on the transom, or the 'back' area of the boat, this motor converts the energy of combustion in its engine into thrust, propelling the vessel through water. The boat can be maneuvered through the waterbody by rotating or twisting the entire motor while it is in operation. This steering method can be applied exclusively, or alongside a rudder, providing the pilot with control over the boat's navigation. Applicable to small boats primarily, outboard motors are a versatile, portable, and efficient means to power and steer watercraft, offering an innovation in marine technology.

1. John was very proud of the 150-horsepower outboard motor he had installed on his fishing boat. It made the boat go faster and was easy to maneuver by simply twisting the whole motor. 2. The rescue team utilized a small inflatable boat fitted with a powerful outboard motor to navigate through the floodwaters. Despite the strong currents, the boat was easy to steer, making their rescue operations more efficient. 3. The two-person kayak we rented on our vacation was equipped with a lightweight, electric outboard motor. It made our exploring less strenuous since we didn't solely rely on paddling. 4. The small aluminum boat didn't originally come with a motor, but the previous owner had fitted it with an outboard motor on the transom, making it suitable for fishing or lazy lake days. 5. Sam's restoration project of an old dinghy included the addition of a vintage outboard motor. This not only added charm but also provided versatile control as he could steer the boat just by turning the motor itself.

Outboard motors, due to their external mounting on the transom of a boat, have significantly advanced the speed, efficiency, and functionality of small watercraft. An exciting fun fact about these motors relates to their steering mechanism. Traditionally, boats have been directed through the water using a rudder in a quite complex process. However, with an outboard motor, steering a boat becomes much simpler. One could actually twist the entire motor to set their direction! This is based on the 'screw' principle. When the propeller in the motor rotates and 'screws' through the water, it creates a forward thrust and pushing the boat along. When this rotating propeller (screw) is inclined to one side, it doesn't just push forward, it also pushes slightly to the side - which makes the boat turn. Imagine it as turning a screw into a material, when you incline the screw (even though it keeps rotating in its axis) the direction the screw penetrates changes. The same principle applies to steering a boat by twisting an outboard motor. This dual steering capability, using both the motor and a rudder if available, provides more excellent control for the boat operator and increases safety, especially in challenging water conditions.