Both a water-jet propulsion system and a propeller use a rotating set of blades to accelerate water and create motion. While a propeller operates in open water, the water-jet uses an impeller that spins freely inside a tube. Thrust is generated when the impeller accelerates the water out of the tube.

What makes a boat a speed boat?

A powerboat, also referred to as a motorboat or speedboat, is a boat which is powered by an engine. Some motorboats are fitted with inboard engines, others have an outboard motor installed on the rear, containing the internal combustion engine, the gearbox and the propeller in one portable unit.

Are speed boats safe?

Speeding boats and alcohol can be a dangerous combination. Inebriation causes a person to take unnecessary risks, and drunken boaters are no exception. Alcohol also slows down reflexes and makes it harder to react to obstacles in time. In some cases, an intoxicated boater may speed off the water and crash on shore.