Abstract: The present invention is directed to a method of installing an erosion-preventing lightweight, semi-permeable, semi-flexible structure in the form of a dike for erosion control of a bank along a body of water. The method comprises the excavation of hydraulically placed silty or clay-containing sand fill or existing silty or clay-containing beach sands to form a trench and the placing of a synthetic woven fabric at the base of the excavation. A mixture of shell, sand and cement is then formed and placed in the excavated trench and compacted therein in layers to construct a dike. After covering the dike with a porous synthetic fabric, rock-filled gabions are then placed on the water-side face and crest of the dike.

Abstract: A method and apparatus is provided for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the well conductors. A long anode carrier apparatus is run down through the platform substructure at one or more locations to support large numbers of anodes.

Abstract: A method and apparatus for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the well conductors. A number of anodes are attached to the outer surface of a number of short sections of pipe. The pipe sections are lowered down through the platform where each section is anchored to a preselected cross-bracing platform member. These anode carrier sections are connected together under water to form an elongated tubular support for the anodes.