What kind of engine is common on boats designed for shallow water?

Boats designed for shallow water commonly use outboard engines, particularly those with a lower horsepower and a shallow draft. These engines are often equipped with a trim and tilt feature, allowing the propeller to be raised to navigate through very shallow depths without damage. Additionally, some shallow-draft boats may utilize jet drives, which draw water from underneath and expel it out the back, providing thrust without the risk of hitting underwater obstacles.