Abstract: A method and apparatus for removing coatings from the hull of a ship using a steered magnet vehicle supported by the adhesion force only of a permanent magnet to the surface to be treated. Using an ultra-high pressure water jet system and method for removing coatings, paint, deposits, organic and inorganic from hulls without harming the substrate material and to provide a superior surface for the application of subsequent coatings.

Abstract: The present invention provides a computerized apparatus and method for stripping paint from a vehicle, such as an automobile, by utilizing ultra-high pressure waterjet technology in conjunction with a method and apparatus for creating and storing, in a database, digitized maps or templates which may conform to either the original shape of a vehicle, the shape of a vehicle subsequent to a collision, or both. The stored shapes may be retrieved and compared to verify the extent of damage, additionally the stored shapes may then be retrieved as needed and used to drive a precision ultra-high pressure waterjet nozzle constructed and arranged for removal of the painted finish from the vehicle's surface.

Abstract: An entrance device having at least two barriers to permit entrance in one direction comprising a first barrier manually displaceable from a closed position to an open position and a second barrier manually displaceable from a closed position to an open position when said first barrier is being engaged to achieve said second open position wherein said first and second barriers are presented by said entrance device in sequence.

Abstract: A method for removing surface coatings from the hull of a ship by focusing annular streams of ultra-high pressure water from a rotating nozzle having one or more orifices. The nozzle orifices have oblique angles from the central axis of the rotating nozzle whereby the force of the water leaving the nozzle through the orifice imparts an opposite rotational force to the rotating nozzle. The placement of the orifices on the rotating nozzle is done in such a manner that the annular streams of water act in concert when striking the working surface to remove the paint. A waste water recovery system collects waste water and particulates of paint stripped from the working surface, the particulates are removed for later disposal and the water is recycled.

Abstract: A method and apparatus for removing coatings from the hull of a ship using a steered magnet vehicle supported by the adhesion force only of a permanent magnet to the surface to be treated. Using an ultra-high pressure water jet system and method for removing coatings, paint, deposits, organic and inorganic from hulls without harming the substrate material and to provide a superior surface for the application of subsequent coatings.