This paper studies the efficiency of sacrificial anodes in nautical engineering, marine and maritime. The anode design, quality manufacturing process and proper installation are critical processes for maximum protection of equipment and vessels. The damage, which causes corrosion, can be reduced; can even be avoided by protection methods economically profitable. The predictable future savings will come by the correct use of the current state of knowledge. This acquired knowledge is not always used rationally despite the great progress and current knowledge we have about the physical-chemical corrosion phenomena. Aspects relating to the assembly, distribution and support must be optimized for optimum performance and facilities are properly protected. Determine guidelines to consider in the design of the equipment (compatibility and incompatibility of the materials), the manufacturing quality of the elements to prevent galvanic corrosion, as in the embodiment of different patterns of maintenance in the case of pleasure craft, fishing boats and coastal represent very substantial costs and losses of the life of the vessels and their vital components.