Abstract: A cleaning system includes a chassis supporting a propulsion system for propelling the cleaning system across a surface. At least one sensor of a first type is coupled to the chassis, and a surface engagement mechanism is configured to maintain the cleaning system coupled to the surface as the propulsion system propels the cleaning system across the surface. A cleaning device is coupled to the chassis and configured to abrade the fouling from the surface, and a controller coupled to the chassis and in signal communication with the propulsion system and the first sensor. The controller is configured to receive a signal from the at least one sensor of the first type and control the propulsion system in response to the signal.