Cavitation nozzle replaces currently used mechanical methods of cleaning with cavitational water plume. Plume is powerful enough to clean any surfaces and at the same time it does not damage painted surfaces Click here to see a video Click here to see a video Our studies have shown that the force exerted on diver's arm by the instrument when cleaning is causing muscle strain comparable to that caused by a cup of coffee when holding it Currently we are working on various devices that make use of the cavitation nozzle. Single and multiples nozzle instruments are being designed and tested. We continue research oriented towards raising the efficiency of our instruments. Optimal nozzle parameters as well as instrument application angle are being studied.