A submarine in-situ net cleaner includes a skid chassis (1) adapted for smooth and snare free sliding across the surface of the net (2), a buoyancy device (3) associated with the chassis to provide the cleaner with buoyancy, a driving device (4) adapted to cooperate with the net (2) and maneuver the cleaner about the surface of the net, a propulsion device (5) adapted to propel the cleaner onto and maintain contact with the net (2) and a cleaning device (6) adapted to remove contaminants from the net including marine fouling from the surface of the net so as to clean the net.
