. Cathodic protection system for fleet moorings. Ocean engineering; Buoys; Moorings. Figure 7. Sinker blocks housing cathodic protection units with coiled cables prior to laying of system. The potential profile of the cathodically protected mooring was made using a portable field meter and two 50-foot leads. A silver/silver chloride reference half-cell was attached to one of these leads and a steel pick to the other. The instrument was read at the surface while a diver made electrical contacts with the pick at the mooring chain; the half-cell was held 1 foot from the point of contact. The read
. Cathodic protection system for fleet moorings. Ocean engineering; Buoys; Moorings. Figure 7. Sinker blocks housing cathodic protection units with coiled cables prior to laying of system. The potential profile of the cathodically protected mooring was made using a portable field meter and two 50-foot leads. A silver/silver chloride reference half-cell was attached to one of these leads and a steel pick to the other. The instrument was read at the surface while a diver made electrical contacts with the pick at the mooring chain; the half-cell was held 1 foot from the point of contact. The readings received are listed in Table 1. The potential of the control buoy was found to be -680 mv at the time the potential profile of the cathodically protected buoy was made. The potential of the ground ring was -665 mv, and the potentials 10 feet down the two painted and one bare leg were -675, -690, and -680 mv, respectively. The control heads of the cathodic protection system were not functioning properly, and the supplier was unable to make the alterations necessary for their proper operation. Thus, it was decided that the system should be modified by replacing the magnesium anodes with ones of zinc which require no control head for regulating the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Drisko, Richard W; Naval Civil Engineering Laboratory (Port Hueneme, Calif. ). Port Hueneme, Calif. : Naval Civil Engineering Laboratory
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