From Simple English Wikipedia, the free encyclopedia

A motorboat is a boat which is powered by an engine (also commonly called a motor). Some motorboats are made with inboard engines; others have an outboard motor installed on the outside, containing the internal combustion engine, the gearbox and the propeller in one portable unit.

An inboard/outboard contains a hybrid of a powerplant and an outboard, where the internal combustion engine is installed inside the boat, and the gearbox and propeller are outside.