APPARATUS FOR CLEANING OF OR PERFORMING MAINTENANCE WORKS ON VERTICAL OR INCLINED SURFACES,IN PARTICULAR SURFACES OF SHIPBOARDSYKH I NAKLONNYKH POVERKHNOSTEJJ,A OSOBENNO BORTOV SUDOV

摘要

A water-spraying device for cleaning ship's hull and other upright surfaces has a horizontally movable carriage from which an outrigger extends towards the surface to be cleaned, and carries a water-spraying device. The carriage has a longitudinally extending water reservoir and a water supply conduit extends along its path of movement and has valves which are opening by a device in the carriage when the water in the reservoir drops below a predetermined level.