What is a Runabout?
A runabout is any small motorboat holding between four and eight people, well suited to moving about on the water. Runabouts can be used for racing, for pleasure activities like fishing and water skiing, or as a ship's tender for larger vessels. Some common runabout boats are bow rider, center console, cuddy and walkaround.
Runabouts can be powered by inboard engines, outboards, jet drives, or inboard-outboard (I/O) drives. Engines can be gasoline or diesel systems.
Inboards have the engine block permanently mounted within the hull of the boat, with a drive shaft and a propeller to drive the craft underneath the hull, and a separate rudder to steer the craft. To give the engine block the proper angle a plinth is typically used.
Outboards are packaged drive units, containing the engine block, linkage gears, and the propeller within a single unit. Outboard drives are mounted to the transom and are mechanically turned to the left or right to steer the craft, either directly with a tiller, or through a remote steering system leading to a steering wheel mounted on the boat's console. Outboard drive units are typically designed to act as both propulsion and rudder
Jet Drives are drive units which have a propeller enclosed in a pump-jet that draws water from underneath of the hull and expels it through a swiveling nozzle in the stern. They are highly maneuverable and tolerant of shallow water, but need larger engines and use more fuel than the other alternatives.
Inboard-Outboard drives are a hybrid, with an engine block mounted within the hull, but linked to a lower drive unit mounted to the transom containing the propeller which is pivoted for steering the craft, similar to an outboard motor. An outdrive also serves as a rudder.